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Commit 6291b7b5 authored by unknown's avatar unknown
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Here comes a nasty patch, although I am not ready to push it yet. I will 

first pull, merge,test, and get it to work.

The main change is the new replication code - now we have two slave threads
SQL thread and I/O thread. I have also re-written a lot of the code to 
prepare for multi-master implementation. 

I also documented IO_CACHE quite extensively and to some extend, THD class.


Makefile.am:
  moved tags target script into a separate file
include/my_sys.h:
  fixes in IO_CACHE for SEQ_READ_APPEND + some documentation
libmysqld/lib_sql.cc:
  updated replication locks, but now I see I did it wrong and it won't compile. Will fix
  before the push.
mysql-test/r/rpl000014.result:
  test result update
mysql-test/r/rpl000015.result:
  test result update
mysql-test/r/rpl000016.result:
  test result update
mysql-test/r/rpl_log.result:
  test result update
mysql-test/t/rpl000016-slave.sh:
  remove relay logs
mysql-test/t/rpl000017-slave.sh:
  remove relay logs
mysql-test/t/rpl_log.test:
  updated test
mysys/mf_iocache.c:
  IO_CACHE updates to make replication work
mysys/mf_iocache2.c:
  IO_CACHE update to make replication work
mysys/thr_mutex.c:
  cosmetic change
sql/item_func.cc:
  new replication code
sql/lex.h:
  new replication
sql/log.cc:
  new replication
sql/log_event.cc:
  new replication
sql/log_event.h:
  new replication
sql/mini_client.cc:
  new replication
sql/mini_client.h:
  new replication
sql/mysql_priv.h:
  new replication
sql/mysqld.cc:
  new replication
sql/repl_failsafe.cc:
  new replication
sql/slave.cc:
  new replication
sql/slave.h:
  new replication
sql/sql_class.cc:
  new replication
sql/sql_class.h:
  new replication
sql/sql_lex.h:
  new replication
sql/sql_parse.cc:
  new replication
sql/sql_repl.cc:
  new replication
sql/sql_repl.h:
  new replication
sql/sql_show.cc:
  new replication
sql/sql_yacc.yy:
  new replication
sql/stacktrace.c:
  more robust stack tracing
sql/structs.h:
  new replication code
BitKeeper/etc/ignore:
  Added mysql-test/r/rpl000002.eval mysql-test/r/rpl000014.eval mysql-test/r/rpl000015.eval mysql-test/r/rpl000016.eval mysql-test/r/slave-running.eval mysql-test/r/slave-stopped.eval to the ignore list
parent df62018f
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Showing with 2467 additions and 1035 deletions
.bzrignore
View file @ 6291b7b5
......@@ -446,3 +446,9 @@ vio/test-sslclient
vio/test-sslserver
vio/viotest-ssl
sql-bench/test-transactions
mysql-test/r/rpl000002.eval
mysql-test/r/rpl000014.eval
mysql-test/r/rpl000015.eval
mysql-test/r/rpl000016.eval
mysql-test/r/slave-running.eval
mysql-test/r/slave-stopped.eval
Makefile.am
View file @ 6291b7b5
......@@ -74,14 +74,11 @@ bin-dist: all
$(top_builddir)/scripts/make_binary_distribution
tags:
rm -f TAGS
find -not -path \*SCCS\* -and \
\( -name \*.cc -or -name \*.h -or -name \*.yy -or -name \*.c \) \
-print -exec etags -o TAGS --append {} \;
support-files/build-tags
.PHONY: init-db bin-dist
# Test installation
test:
cd mysql-test ; ./mysql-test-run
include/my_sys.h
View file @ 6291b7b5
......@@ -296,35 +296,105 @@ typedef int (*IO_CACHE_CALLBACK)(struct st_io_cache*);
typedef struct st_io_cache /* Used when cacheing files */
{
/* pos_in_file is offset in file corresponding to the first byte of
byte* buffer. end_of_file is the offset of end of file for READ_CACHE
and WRITE_CACHE. For SEQ_READ_APPEND it the maximum of the actual
end of file and the position represented by read_end.
*/
my_off_t pos_in_file,end_of_file;
/* read_pos points to current read position in the buffer
read_end is the non-inclusive boundary in the buffer for the currently
valid read area
buffer is the read buffer
not sure about request_pos except that it is used in async_io
*/
byte *read_pos,*read_end,*buffer,*request_pos;
/* write_buffer is used only in WRITE caches and in SEQ_READ_APPEND to
buffer writes
append_read_pos is only used in SEQ_READ_APPEND, and points to the
current read position in the write buffer. Note that reads in
SEQ_READ_APPEND caches can happen from both read buffer (byte* buffer),
and write buffer (byte* write_buffer).
write_pos points to current write position in the write buffer and
write_end is the non-inclusive boundary of the valid write area
*/
byte *write_buffer, *append_read_pos, *write_pos, *write_end;
/* current_pos and current_end are convenience variables used by
my_b_tell() and other routines that need to know the current offset
current_pos points to &write_pos, and current_end to &write_end in a
WRITE_CACHE, and &read_pos and &read_end respectively otherwise
*/
byte **current_pos, **current_end;
/* The lock is for append buffer used in READ_APPEND cache */
/* The lock is for append buffer used in SEQ_READ_APPEND cache */
#ifdef THREAD
pthread_mutex_t append_buffer_lock;
/* need mutex copying from append buffer to read buffer */
#endif
/* a caller will use my_b_read() macro to read from the cache
if the data is already in cache, it will be simply copied with
memcpy() and internal variables will be accordinging updated with
no functions invoked. However, if the data is not fully in the cache,
my_b_read() will call read_function to fetch the data. read_function
must never be invoked directly
*/
int (*read_function)(struct st_io_cache *,byte *,uint);
/* same idea as in the case of read_function, except my_b_write() needs to
be replaced with my_b_append() for a SEQ_READ_APPEND cache
*/
int (*write_function)(struct st_io_cache *,const byte *,uint);
/* specifies the type of the cache. Depending on the type of the cache
certain operations might not be available and yield unpredicatable
results. Details to be documented later
*/
enum cache_type type;
/* callbacks when the actual read I/O happens */
/* callbacks when the actual read I/O happens. These were added and
are currently used for binary logging of LOAD DATA INFILE - when a
block is read from the file, we create a block create/append event, and
when IO_CACHE is closed, we create an end event. These functions could,
of course be used for other things
*/
IO_CACHE_CALLBACK pre_read;
IO_CACHE_CALLBACK post_read;
IO_CACHE_CALLBACK pre_close;
void* arg; /* for use by pre/post_read */
char *file_name; /* if used with 'open_cached_file' */
char *dir,*prefix;
File file;
File file; /* file descriptor */
/* seek_not_done is set by my_b_seek() to inform the upcoming read/write
operation that a seek needs to be preformed prior to the actual I/O
error is 0 if the cache operation was successful, -1 if there was a
"hard" error, and the actual number of I/O-ed bytes if the read/write was
partial
*/
int seek_not_done,error;
/* buffer_length is the size of memory allocated for buffer or write_buffer
read_length is the same as buffer_length except when we use async io
not sure why we need it
*/
uint buffer_length,read_length;
myf myflags; /* Flags used to my_read/my_write */
/*
alloced_buffer is 1 if the buffer was allocated by init_io_cache() and
0 if it was supplied by the user
Currently READ_NET is the only one that will use a buffer allocated
somewhere else
*/
my_bool alloced_buffer;
/* init_count is incremented every time we call init_io_cache()
It is not reset in end_io_cache(). This variable
was introduced for slave relay logs - RELAY_LOG_INFO stores a pointer
to IO_CACHE that could in some cases refer to the IO_CACHE of the
currently active relay log. The IO_CACHE then could be closed,
re-opened and start pointing to a different log file. In that case,
we could not know reliably if this happened without init_count
one must be careful with bzero() prior to the subsequent init_io_cache()
call
*/
int init_count;
#ifdef HAVE_AIOWAIT
/* as inidicated by ifdef, this is for async I/O, we will have
Sinisa comment this some time
*/
uint inited;
my_off_t aio_read_pos;
my_aio_result aio_result;
......@@ -369,6 +439,8 @@ typedef int (*qsort2_cmp)(const void *, const void *, const void *);
#define my_b_tell(info) ((info)->pos_in_file + \
(uint) (*(info)->current_pos - (info)->request_pos))
#define my_b_append_tell(info) ((info)->end_of_file + \
(uint) ((info)->write_pos - (info)->write_buffer))
#define my_b_bytes_in_cache(info) (uint) (*(info)->current_end - \
*(info)->current_pos)
......
libmysqld/lib_sql.cc
View file @ 6291b7b5
......@@ -396,8 +396,8 @@ int STDCALL mysql_server_init(int argc, char **argv, char **groups)
(void) pthread_mutex_init(&LOCK_bytes_sent,MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_bytes_received,MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_timezone,MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_binlog_update, MY_MUTEX_INIT_FAST); // QQ NOT USED
(void) pthread_mutex_init(&LOCK_slave, MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_slave_io, MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_slave_sql, MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_server_id, MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_user_conn, MY_MUTEX_INIT_FAST);
(void) pthread_cond_init(&COND_thread_count,NULL);
......@@ -406,8 +406,11 @@ int STDCALL mysql_server_init(int argc, char **argv, char **groups)
(void) pthread_cond_init(&COND_flush_thread_cache,NULL);
(void) pthread_cond_init(&COND_manager,NULL);
(void) pthread_cond_init(&COND_binlog_update, NULL);
(void) pthread_cond_init(&COND_slave_stopped, NULL);
(void) pthread_cond_init(&COND_slave_start, NULL);
(void) pthread_cond_init(&COND_slave_log_update, NULL);
(void) pthread_cond_init(&COND_slave_sql_stop, NULL);
(void) pthread_cond_init(&COND_slave_sql_start, NULL);
(void) pthread_cond_init(&COND_slave_sql_stop, NULL);
(void) pthread_cond_init(&COND_slave_sql_start, NULL);
if (set_default_charset_by_name(default_charset, MYF(MY_WME)))
{
......
mysql-test/r/rpl000014.result
View file @ 6291b7b5
......@@ -7,22 +7,22 @@ show master status;
File Position Binlog_do_db Binlog_ignore_db
master-bin.001 79
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 root $MASTER_MYPORT 1 master-bin.001 79 Yes 0 0 1
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 root 9306 1 master-bin.001 79 mysql-relay-bin.002 120 master-bin.001 Yes Yes 0 0 79
change master to master_log_pos=73;
slave stop;
change master to master_log_pos=73;
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 root $MASTER_MYPORT 1 master-bin.001 73 No 0 0 1
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 root 9306 1 master-bin.001 73 mysql-relay-bin.001 4 master-bin.001 No No 0 0 73
slave start;
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 root $MASTER_MYPORT 1 master-bin.001 73 Yes 0 0 1
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 root 9306 1 master-bin.001 73 mysql-relay-bin.001 4 master-bin.001 Yes Yes 0 0 73
change master to master_log_pos=173;
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 root $MASTER_MYPORT 1 master-bin.001 173 Yes 0 0 1
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 root 9306 1 master-bin.001 173 mysql-relay-bin.001 4 master-bin.001 Yes Yes 0 0 173
show master status;
File Position Binlog_do_db Binlog_ignore_db
master-bin.001 79
......
mysql-test/r/rpl000015.result
View file @ 6291b7b5
......@@ -4,21 +4,21 @@ File Position Binlog_do_db Binlog_ignore_db
master-bin.001 79
reset slave;
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
0 0 0 No 0 0 0
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
0 0 0 0 No No 0 0 0
change master to master_host='127.0.0.1';
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 test 3306 60 4 No 0 0 0
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 test 3306 60 4 mysql-relay-bin.001 4 No No 0 0 0
change master to master_host='127.0.0.1',master_user='root',
master_password='',master_port=9306;
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 root 9306 60 4 No 0 0 0
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 root 9306 60 4 mysql-relay-bin.001 4 No No 0 0 0
slave start;
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 root 9306 60 master-bin.001 79 Yes 0 0 1
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 root 9306 60 master-bin.001 79 mysql-relay-bin.001 120 master-bin.001 Yes Yes 0 0 79
drop table if exists t1;
create table t1 (n int);
insert into t1 values (10),(45),(90);
......
mysql-test/r/rpl000016.result
View file @ 6291b7b5
......@@ -14,8 +14,8 @@ drop table if exists t1;
create table t1 (s text);
insert into t1 values('Could not break slave'),('Tried hard');
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 root 9306 60 master-bin.001 234 Yes 0 0 3
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 root 9306 60 master-bin.001 234 mysql-relay-bin.001 275 master-bin.001 Yes Yes 0 0 234
select * from t1;
s
Could not break slave
......@@ -42,8 +42,8 @@ Log_name
master-bin.003
insert into t2 values (65);
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 root 9306 60 master-bin.003 155 Yes 0 0 3
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 root 9306 60 master-bin.003 155 mysql-relay-bin.001 793 master-bin.003 Yes Yes 0 0 155
select * from t2;
m
34
......@@ -65,8 +65,8 @@ master-bin.006 445
slave stop;
slave start;
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 root 9306 60 master-bin.006 445 Yes 0 0 7
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 root 9306 60 master-bin.006 445 mysql-relay-bin.004 1376 master-bin.006 Yes Yes 0 0 445
lock tables t3 read;
select count(*) from t3 where n >= 4;
count(*)
......
mysql-test/r/rpl_log.result
View file @ 6291b7b5
......@@ -15,48 +15,48 @@ create table t1 (word char(20) not null);
load data infile '../../std_data/words.dat' into table t1;
drop table t1;
show binlog events;
Log_name Pos Event_type Server_id Log_seq Info
master-bin.001 4 Start 1 1 Server ver: $VERSION, Binlog ver: 2
master-bin.001 79 Query 1 2 use test; create table t1(n int not null auto_increment primary key)
master-bin.001 172 Intvar 1 3 INSERT_ID=1
master-bin.001 200 Query 1 4 use test; insert into t1 values (NULL)
master-bin.001 263 Query 1 5 use test; drop table t1
master-bin.001 311 Query 1 6 use test; create table t1 (word char(20) not null)
master-bin.001 386 Create_file 1 7 db=test;table=t1;file_id=1;block_len=81
master-bin.001 556 Exec_load 1 8 ;file_id=1
master-bin.001 579 Query 1 9 use test; drop table t1
Log_name Pos Event_type Server_id Orig_log_pos Info
master-bin.001 4 Start 1 4 Server ver: 4.0.1-alpha-debug-log, Binlog ver: 3
master-bin.001 79 Query 1 79 use test; create table t1(n int not null auto_increment primary key)
master-bin.001 172 Intvar 1 172 INSERT_ID=1
master-bin.001 200 Query 1 200 use test; insert into t1 values (NULL)
master-bin.001 263 Query 1 263 use test; drop table t1
master-bin.001 311 Query 1 311 use test; create table t1 (word char(20) not null)
master-bin.001 386 Create_file 1 386 db=test;table=t1;file_id=1;block_len=81
master-bin.001 556 Exec_load 1 556 ;file_id=1
master-bin.001 579 Query 1 579 use test; drop table t1
show binlog events from 79 limit 1;
Log_name Pos Event_type Server_id Log_seq Info
master-bin.001 79 Query 1 2 use test; create table t1(n int not null auto_increment primary key)
Log_name Pos Event_type Server_id Orig_log_pos Info
master-bin.001 79 Query 1 79 use test; create table t1(n int not null auto_increment primary key)
show binlog events from 79 limit 2;
Log_name Pos Event_type Server_id Log_seq Info
master-bin.001 79 Query 1 2 use test; create table t1(n int not null auto_increment primary key)
master-bin.001 172 Intvar 1 3 INSERT_ID=1
Log_name Pos Event_type Server_id Orig_log_pos Info
master-bin.001 79 Query 1 79 use test; create table t1(n int not null auto_increment primary key)
master-bin.001 172 Intvar 1 172 INSERT_ID=1
show binlog events from 79 limit 2,1;
Log_name Pos Event_type Server_id Log_seq Info
master-bin.001 200 Query 1 4 use test; insert into t1 values (NULL)
Log_name Pos Event_type Server_id Orig_log_pos Info
master-bin.001 200 Query 1 200 use test; insert into t1 values (NULL)
flush logs;
create table t1 (n int);
insert into t1 values (1);
drop table t1;
show binlog events;
Log_name Pos Event_type Server_id Log_seq Info
master-bin.001 4 Start 1 1 Server ver: $VERSION, Binlog ver: 2
master-bin.001 79 Query 1 2 use test; create table t1(n int not null auto_increment primary key)
master-bin.001 172 Intvar 1 3 INSERT_ID=1
master-bin.001 200 Query 1 4 use test; insert into t1 values (NULL)
master-bin.001 263 Query 1 5 use test; drop table t1
master-bin.001 311 Query 1 6 use test; create table t1 (word char(20) not null)
master-bin.001 386 Create_file 1 7 db=test;table=t1;file_id=1;block_len=81
master-bin.001 556 Exec_load 1 8 ;file_id=1
master-bin.001 579 Query 1 9 use test; drop table t1
master-bin.001 627 Rotate 1 10 master-bin.002;pos=4
master-bin.001 668 Stop 1 11
Log_name Pos Event_type Server_id Orig_log_pos Info
master-bin.001 4 Start 1 4 Server ver: 4.0.1-alpha-debug-log, Binlog ver: 3
master-bin.001 79 Query 1 79 use test; create table t1(n int not null auto_increment primary key)
master-bin.001 172 Intvar 1 172 INSERT_ID=1
master-bin.001 200 Query 1 200 use test; insert into t1 values (NULL)
master-bin.001 263 Query 1 263 use test; drop table t1
master-bin.001 311 Query 1 311 use test; create table t1 (word char(20) not null)
master-bin.001 386 Create_file 1 386 db=test;table=t1;file_id=1;block_len=81
master-bin.001 556 Exec_load 1 556 ;file_id=1
master-bin.001 579 Query 1 579 use test; drop table t1
master-bin.001 627 Rotate 1 627 master-bin.002;pos=4
master-bin.001 668 Stop 1 668
show binlog events in 'master-bin.002';
Log_name Pos Event_type Server_id Log_seq Info
master-bin.002 4 Query 1 1 use test; create table t1 (n int)
master-bin.002 62 Query 1 2 use test; insert into t1 values (1)
master-bin.002 122 Query 1 3 use test; drop table t1
Log_name Pos Event_type Server_id Orig_log_pos Info
master-bin.002 4 Query 1 4 use test; create table t1 (n int)
master-bin.002 62 Query 1 62 use test; insert into t1 values (1)
master-bin.002 122 Query 1 122 use test; drop table t1
show master logs;
Log_name
master-bin.001
......@@ -67,45 +67,45 @@ Log_name
slave-bin.001
slave-bin.002
show binlog events in 'slave-bin.001' from 4;
Log_name Pos Event_type Server_id Log_seq Info
slave-bin.001 4 Start 2 1 Server ver: $VERSION, Binlog ver: 2
slave-bin.001 79 Slave 2 3 host=127.0.0.1,port=$MASTER_MYPORT,log=master-bin.001,pos=4
slave-bin.001 132 Query 1 2 use test; create table t1(n int not null auto_increment primary key)
slave-bin.001 225 Intvar 1 3 INSERT_ID=1
slave-bin.001 253 Query 1 4 use test; insert into t1 values (NULL)
slave-bin.001 316 Query 1 5 use test; drop table t1
slave-bin.001 364 Query 1 6 use test; create table t1 (word char(20) not null)
slave-bin.001 439 Create_file 1 7 db=test;table=t1;file_id=1;block_len=81
slave-bin.001 618 Exec_load 1 8 ;file_id=1
slave-bin.001 641 Query 1 9 use test; drop table t1
slave-bin.001 689 Rotate 1 4 slave-bin.002;pos=4; forced by master
slave-bin.001 729 Stop 2 5
Log_name Pos Event_type Server_id Orig_log_pos Info
slave-bin.001 4 Start 2 4 Server ver: 4.0.1-alpha-debug-log, Binlog ver: 3
slave-bin.001 79 Slave 2 79 host=127.0.0.1,port=9306,log=master-bin.001,pos=4
slave-bin.001 132 Query 1 79 use test; create table t1(n int not null auto_increment primary key)
slave-bin.001 225 Intvar 1 200 INSERT_ID=1
slave-bin.001 253 Query 1 200 use test; insert into t1 values (NULL)
slave-bin.001 316 Query 1 263 use test; drop table t1
slave-bin.001 364 Query 1 311 use test; create table t1 (word char(20) not null)
slave-bin.001 439 Create_file 1 386 db=test;table=t1;file_id=1;block_len=81
slave-bin.001 618 Exec_load 1 556 ;file_id=1
slave-bin.001 641 Query 1 579 use test; drop table t1
slave-bin.001 689 Rotate 1 627 slave-bin.002;pos=4; forced by master
slave-bin.001 729 Stop 2 729
show binlog events in 'slave-bin.002' from 4;
Log_name Pos Event_type Server_id Log_seq Info
slave-bin.002 4 Slave 2 10 host=127.0.0.1,port=$MASTER_MYPORT,log=master-bin.002,pos=4
slave-bin.002 57 Query 1 1 use test; create table t1 (n int)
slave-bin.002 115 Query 1 2 use test; insert into t1 values (1)
slave-bin.002 175 Query 1 3 use test; drop table t1
Log_name Pos Event_type Server_id Orig_log_pos Info
slave-bin.002 4 Slave 2 627 host=127.0.0.1,port=9306,log=master-bin.002,pos=4
slave-bin.002 57 Query 1 4 use test; create table t1 (n int)
slave-bin.002 115 Query 1 62 use test; insert into t1 values (1)
slave-bin.002 175 Query 1 122 use test; drop table t1
show slave status;
Master_Host Master_User Master_Port Connect_retry Log_File Pos Slave_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Last_log_seq
127.0.0.1 root $MASTER_MYPORT 1 master-bin.002 170 Yes 0 0 3
Master_Host Master_User Master_Port Connect_retry Master_Log_File Read_Master_Log_Pos Relay_Log_File Relay_Log_Pos Relay_Master_Log_File Slave_IO_Running Slave_SQL_Running Replicate_do_db Replicate_ignore_db Last_errno Last_error Skip_counter Exec_master_log_pos
127.0.0.1 root 9306 1 master-bin.002 170 mysql-relay-bin.002 935 master-bin.002 Yes Yes 0 0 170
show new master for slave with master_log_file='master-bin.001' and
master_log_pos=4 and master_log_seq=1 and master_server_id=1;
master_log_pos=4 and master_server_id=1;
Log_name Log_pos
slave-bin.001 132
show new master for slave with master_log_file='master-bin.001' and
master_log_pos=79 and master_log_seq=2 and master_server_id=1;
master_log_pos=79 and master_server_id=1;
Log_name Log_pos
slave-bin.001 225
show new master for slave with master_log_file='master-bin.001' and
master_log_pos=311 and master_log_seq=6 and master_server_id=1;
master_log_pos=311 and master_server_id=1;
Log_name Log_pos
slave-bin.001 439
show new master for slave with master_log_file='master-bin.002' and
master_log_pos=4 and master_log_seq=1 and master_server_id=1;
master_log_pos=4 and master_server_id=1;
Log_name Log_pos
slave-bin.002 57
show new master for slave with master_log_file='master-bin.002' and
master_log_pos=137 and master_log_seq=3 and master_server_id=1;
master_log_pos=122 and master_server_id=1;
Log_name Log_pos
slave-bin.002 223
mysql-test/resolve-stack 0 → 100755
View file @ 6291b7b5
#! /bin/sh
# A shortcut for resolving stacks when debugging when
# we cannot duplicate the crash in a debugger and have to
# resort to using stack traces
nm --numeric-sort ../sql/mysqld > var/tmp/mysqld.sym
echo "Please type or paste the numeric stack trace,Ctrl-C to quit:"
../extra/resolve_stack_dump -s var/tmp/mysqld.sym
mysql-test/t/rpl000016-slave.opt 0 → 100644
View file @ 6291b7b5
-O max_binlog_size=2048
mysql-test/t/rpl000016-slave.sh
View file @ 6291b7b5
rm -f $MYSQL_TEST_DIR/var/slave-data/master.info
rm -f $MYSQL_TEST_DIR/var/slave-data/*relay*
mysql-test/t/rpl000017-slave.sh
View file @ 6291b7b5
rm -f $MYSQL_TEST_DIR/var/slave-data/*relay*
cat > $MYSQL_TEST_DIR/var/slave-data/master.info <<EOF
master-bin.001
4
......
mysql-test/t/rpl_log.test
View file @ 6291b7b5
......@@ -37,13 +37,13 @@ show binlog events in 'slave-bin.001' from 4;
show binlog events in 'slave-bin.002' from 4;
show slave status;
show new master for slave with master_log_file='master-bin.001' and
master_log_pos=4 and master_log_seq=1 and master_server_id=1;
master_log_pos=4 and master_server_id=1;
show new master for slave with master_log_file='master-bin.001' and
master_log_pos=79 and master_log_seq=2 and master_server_id=1;
master_log_pos=79 and master_server_id=1;
show new master for slave with master_log_file='master-bin.001' and
master_log_pos=311 and master_log_seq=6 and master_server_id=1;
master_log_pos=311 and master_server_id=1;
show new master for slave with master_log_file='master-bin.002' and
master_log_pos=4 and master_log_seq=1 and master_server_id=1;
master_log_pos=4 and master_server_id=1;
show new master for slave with master_log_file='master-bin.002' and
master_log_pos=137 and master_log_seq=3 and master_server_id=1;
master_log_pos=122 and master_server_id=1;
mysys/mf_iocache.c
View file @ 6291b7b5
......@@ -123,6 +123,8 @@ int init_io_cache(IO_CACHE *info, File file, uint cachesize,
info->pos_in_file= seek_offset;
info->pre_close = info->pre_read = info->post_read = 0;
info->arg = 0;
info->init_count++; /* we assume the user had set it to 0 prior to
first call */
info->alloced_buffer = 0;
info->buffer=0;
info->seek_not_done= test(file >= 0);
......@@ -447,11 +449,13 @@ int _my_b_seq_read(register IO_CACHE *info, byte *Buffer, uint Count)
info->end_of_file)
goto read_append_buffer;
if (info->seek_not_done)
{ /* File touched, do seek */
/*
With read-append cache we must always do a seek before we read,
because the write could have moved the file pointer astray
*/
VOID(my_seek(info->file,pos_in_file,MY_SEEK_SET,MYF(0)));
info->seek_not_done=0;
}
diff_length=(uint) (pos_in_file & (IO_SIZE-1));
/* now the second stage begins - read from file descriptor */
......@@ -507,6 +511,13 @@ int _my_b_seq_read(register IO_CACHE *info, byte *Buffer, uint Count)
memcpy(Buffer,info->buffer,(size_t) length);
Count -= length;
Buffer += length;
/*
added the line below to make
DBUG_ASSERT(pos_in_file==info->end_of_file) pass.
otherwise this does not appear to be needed
*/
pos_in_file += length;
goto read_append_buffer;
}
}
......@@ -528,10 +539,13 @@ int _my_b_seq_read(register IO_CACHE *info, byte *Buffer, uint Count)
/* First copy the data to Count */
uint len_in_buff = (uint) (info->write_pos - info->append_read_pos);
uint copy_len;
uint transfer_len;
DBUG_ASSERT(info->append_read_pos <= info->write_pos);
/*
TODO: figure out if the below assert is needed or correct.
*/
DBUG_ASSERT(pos_in_file == info->end_of_file);
copy_len=min(Count, len_in_buff);
memcpy(Buffer, info->append_read_pos, copy_len);
info->append_read_pos += copy_len;
......@@ -541,11 +555,12 @@ int _my_b_seq_read(register IO_CACHE *info, byte *Buffer, uint Count)
/* Fill read buffer with data from write buffer */
memcpy(info->buffer, info->append_read_pos,
(size_t) (len_in_buff - copy_len));
(size_t) (transfer_len=len_in_buff - copy_len));
info->read_pos= info->buffer;
info->read_end= info->buffer+(len_in_buff - copy_len);
info->read_end= info->buffer+transfer_len;
info->append_read_pos=info->write_pos;
info->pos_in_file+=len_in_buff;
info->pos_in_file=pos_in_file+copy_len;
info->end_of_file+=len_in_buff;
}
unlock_append_buffer(info);
return Count ? 1 : 0;
......@@ -887,12 +902,10 @@ int flush_io_cache(IO_CACHE *info)
if ((length=(uint) (info->write_pos - info->write_buffer)))
{
pos_in_file=info->pos_in_file;
if (append_cache)
{
pos_in_file=info->end_of_file;
info->seek_not_done=1;
}
if (info->seek_not_done)
/* if we have append cache, we always open the file with
O_APPEND which moves the pos to EOF automatically on every write
*/
if (!append_cache && info->seek_not_done)
{ /* File touched, do seek */
if (my_seek(info->file,pos_in_file,MY_SEEK_SET,MYF(0)) ==
MY_FILEPOS_ERROR)
......@@ -902,20 +915,24 @@ int flush_io_cache(IO_CACHE *info)
if (!append_cache)
info->seek_not_done=0;
}
info->write_pos= info->write_buffer;
if (!append_cache)
info->pos_in_file+=length;
info->write_end= (info->write_buffer+info->buffer_length-
((pos_in_file+length) & (IO_SIZE-1)));
/* Set this to be used if we are using SEQ_READ_APPEND */
info->append_read_pos = info->write_buffer;
if (my_write(info->file,info->write_buffer,length,
info->myflags | MY_NABP))
info->error= -1;
else
info->error= 0;
if (!append_cache)
{
set_if_bigger(info->end_of_file,(pos_in_file+length));
}
else
info->end_of_file+=(info->write_pos-info->append_read_pos);
info->append_read_pos=info->write_pos=info->write_buffer;
DBUG_RETURN(info->error);
}
}
......
mysys/mf_iocache2.c
View file @ 6291b7b5
......@@ -32,12 +32,26 @@
void my_b_seek(IO_CACHE *info,my_off_t pos)
{
my_off_t offset = (pos - info->pos_in_file);
my_off_t offset;
DBUG_ENTER("my_b_seek");
DBUG_PRINT("enter",("pos: %lu", (ulong) pos));
if (info->type == READ_CACHE)
/*
TODO: verify that it is OK to do seek in the non-append
area in SEQ_READ_APPEND cache
*/
/* TODO:
a) see if this always works
b) see if there is a better way to make it work
*/
if (info->type == SEQ_READ_APPEND)
flush_io_cache(info);
offset=(pos - info->pos_in_file);
if (info->type == READ_CACHE || info->type == SEQ_READ_APPEND)
{
/* TODO: explain why this works if pos < info->pos_in_file */
if ((ulonglong) offset < (ulonglong) (info->read_end - info->buffer))
{
/* The read is in the current buffer; Reuse it */
......
mysys/thr_mutex.c
View file @ 6291b7b5
......@@ -70,7 +70,8 @@ int safe_mutex_lock(safe_mutex_t *mp,const char *file, uint line)
}
if (mp->count++)
{
fprintf(stderr,"safe_mutex: Error in thread libray: Got mutex at %s, line %d more than 1 time\n", file,line);
fprintf(stderr,"safe_mutex: Error in thread libray: Got mutex at %s, \
line %d more than 1 time\n", file,line);
fflush(stderr);
abort();
}
......
sql/item_func.cc
View file @ 6291b7b5
......@@ -1453,11 +1453,13 @@ longlong Item_master_pos_wait::val_int()
return 0;
}
ulong pos = (ulong)args[1]->val_int();
if ((event_count = glob_mi.wait_for_pos(thd, log_name, pos)) == -1)
LOCK_ACTIVE_MI;
if ((event_count = active_mi->rli.wait_for_pos(thd, log_name, pos)) == -1)
{
null_value = 1;
event_count=0;
}
UNLOCK_ACTIVE_MI;
return event_count;
}
......
sql/lex.h
View file @ 6291b7b5
......@@ -218,7 +218,6 @@ static SYMBOL symbols[] = {
{ "MASTER_HOST", SYM(MASTER_HOST_SYM),0,0},
{ "MASTER_LOG_FILE", SYM(MASTER_LOG_FILE_SYM),0,0},
{ "MASTER_LOG_POS", SYM(MASTER_LOG_POS_SYM),0,0},
{ "MASTER_LOG_SEQ", SYM(MASTER_LOG_SEQ_SYM),0,0},
{ "MASTER_PASSWORD", SYM(MASTER_PASSWORD_SYM),0,0},
{ "MASTER_PORT", SYM(MASTER_PORT_SYM),0,0},
{ "MASTER_SERVER_ID", SYM(MASTER_SERVER_ID_SYM),0,0},
......
sql/log.cc
View file @ 6291b7b5
......@@ -29,6 +29,7 @@
#include <my_dir.h>
#include <stdarg.h>
#include <m_ctype.h> // For test_if_number
#include <assert.h>
MYSQL_LOG mysql_log,mysql_update_log,mysql_slow_log,mysql_bin_log;
extern I_List<i_string> binlog_do_db, binlog_ignore_db;
......@@ -81,7 +82,7 @@ static int find_uniq_filename(char *name)
MYSQL_LOG::MYSQL_LOG(): last_time(0), query_start(0),index_file(-1),
name(0), log_type(LOG_CLOSED),write_error(0),
inited(0), log_seq(1), file_id(1),no_rotate(0),
inited(0), file_id(1),no_rotate(0),
need_start_event(1)
{
/*
......@@ -138,15 +139,18 @@ bool MYSQL_LOG::open_index( int options)
}
void MYSQL_LOG::init(enum_log_type log_type_arg,
enum cache_type io_cache_type_arg)
enum cache_type io_cache_type_arg,
bool no_auto_events_arg)
{
log_type = log_type_arg;
io_cache_type = io_cache_type_arg;
no_auto_events = no_auto_events_arg;
if (!inited)
{
inited=1;
(void) pthread_mutex_init(&LOCK_log,MY_MUTEX_INIT_SLOW);
(void) pthread_mutex_init(&LOCK_index, MY_MUTEX_INIT_SLOW);
(void) pthread_cond_init(&update_cond, 0);
}
}
......@@ -160,16 +164,17 @@ void MYSQL_LOG::close_index()
}
void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
const char *new_name)
const char *new_name, enum cache_type io_cache_type_arg,
bool no_auto_events_arg)
{
MY_STAT tmp_stat;
char buff[512];
File file= -1;
bool do_magic;
int open_flags = O_CREAT | O_APPEND | O_BINARY;
if (!inited && log_type_arg == LOG_BIN && *fn_ext(log_name))
no_rotate = 1;
init(log_type_arg);
init(log_type_arg,io_cache_type_arg,no_auto_events_arg);
if (!(name=my_strdup(log_name,MYF(MY_WME))))
goto err;
......@@ -178,6 +183,11 @@ void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
else if (generate_new_name(log_file_name, name))
goto err;
if (io_cache_type == SEQ_READ_APPEND)
open_flags |= O_RDWR;
else
open_flags |= O_WRONLY;
if (log_type == LOG_BIN && !index_file_name[0])
fn_format(index_file_name, name, mysql_data_home, ".index", 6);
......@@ -185,7 +195,7 @@ void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
do_magic = ((log_type == LOG_BIN) && !my_stat(log_file_name,
&tmp_stat, MYF(0)));
if ((file=my_open(log_file_name,O_CREAT | O_APPEND | O_WRONLY | O_BINARY,
if ((file=my_open(log_file_name,open_flags,
MYF(MY_WME | ME_WAITTANG))) < 0 ||
init_io_cache(&log_file, file, IO_SIZE, io_cache_type,
my_tell(file,MYF(MY_WME)), 0, MYF(MY_WME | MY_NABP)))
......@@ -235,11 +245,10 @@ void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
open_index(O_APPEND | O_RDWR | O_CREAT))
goto err;
log_seq = 1;
if (need_start_event)
if (need_start_event && !no_auto_events)
{
Start_log_event s;
s.set_log_seq(0, this);
s.set_log_pos(this);
s.write(&log_file);
need_start_event=0;
}
......@@ -264,9 +273,7 @@ void MYSQL_LOG::open(const char *log_name, enum_log_type log_type_arg,
end_io_cache(&log_file);
x_free(name); name=0;
log_type=LOG_CLOSED;
return;
}
int MYSQL_LOG::get_current_log(LOG_INFO* linfo)
......@@ -279,7 +286,8 @@ int MYSQL_LOG::get_current_log(LOG_INFO* linfo)
}
// if log_name is "" we stop at the first entry
int MYSQL_LOG::find_first_log(LOG_INFO* linfo, const char* log_name)
int MYSQL_LOG::find_first_log(LOG_INFO* linfo, const char* log_name,
bool need_mutex)
{
if (index_file < 0)
return LOG_INFO_INVALID;
......@@ -290,6 +298,7 @@ int MYSQL_LOG::find_first_log(LOG_INFO* linfo, const char* log_name)
// mutex needed because we need to make sure the file pointer does not move
// from under our feet
if (need_mutex)
pthread_mutex_lock(&LOCK_index);
if (init_io_cache(&io_cache, index_file, IO_SIZE, READ_CACHE, (my_off_t) 0,
0, MYF(MY_WME)))
......@@ -319,6 +328,7 @@ int MYSQL_LOG::find_first_log(LOG_INFO* linfo, const char* log_name)
error = 0;
err:
if (need_mutex)
pthread_mutex_unlock(&LOCK_index);
end_io_cache(&io_cache);
return error;
......@@ -326,7 +336,7 @@ int MYSQL_LOG::find_first_log(LOG_INFO* linfo, const char* log_name)
}
int MYSQL_LOG::find_next_log(LOG_INFO* linfo)
int MYSQL_LOG::find_next_log(LOG_INFO* linfo, bool need_lock)
{
// mutex needed because we need to make sure the file pointer does not move
// from under our feet
......@@ -335,7 +345,7 @@ int MYSQL_LOG::find_next_log(LOG_INFO* linfo)
char* fname = linfo->log_file_name;
IO_CACHE io_cache;
uint length;
if (need_lock)
pthread_mutex_lock(&LOCK_index);
if (init_io_cache(&io_cache, index_file, IO_SIZE,
READ_CACHE, (my_off_t) linfo->index_file_offset, 0,
......@@ -354,11 +364,125 @@ int MYSQL_LOG::find_next_log(LOG_INFO* linfo)
error = 0;
err:
if (need_lock)
pthread_mutex_unlock(&LOCK_index);
end_io_cache(&io_cache);
return error;
}
int MYSQL_LOG::reset_logs(THD* thd)
{
LOG_INFO linfo;
int error=0;
const char* save_name;
enum_log_type save_log_type;
pthread_mutex_lock(&LOCK_log);
if (find_first_log(&linfo,""))
{
error=1;
goto err;
}
for(;;)
{
my_delete(linfo.log_file_name, MYF(MY_WME));
if (find_next_log(&linfo))
break;
}
save_name=name;
name=0;
save_log_type=log_type;
close(1);
my_delete(index_file_name, MYF(MY_WME));
if (thd && !thd->slave_thread)
need_start_event=1;
open(save_name,save_log_type,0,io_cache_type,no_auto_events);
my_free((gptr)save_name,MYF(0));
err:
pthread_mutex_unlock(&LOCK_log);
return error;
}
int MYSQL_LOG::purge_first_log(struct st_relay_log_info* rli)
{
// pre-conditions
DBUG_ASSERT(is_open());
DBUG_ASSERT(index_file >= 0);
DBUG_ASSERT(rli->slave_running == 1);
DBUG_ASSERT(!strcmp(rli->linfo.log_file_name,rli->relay_log_name));
// assume that we have previously read the first log and
// stored it in rli->relay_log_name
DBUG_ASSERT(rli->linfo.index_file_offset ==
strlen(rli->relay_log_name) + 1);
int tmp_fd;
char* fname, *io_buf;
int error = 0;
if (!(fname = (char*)my_malloc(IO_SIZE+FN_REFLEN, MYF(MY_WME))))
return 1;
pthread_mutex_lock(&LOCK_index);
my_seek(index_file,rli->linfo.index_file_offset,
MY_SEEK_SET, MYF(MY_WME));
io_buf = fname + FN_REFLEN;
strxmov(fname,rli->relay_log_name,".tmp",NullS);
if ((tmp_fd = my_open(fname,O_CREAT|O_BINARY|O_RDWR, MYF(MY_WME))) < 0)
{
error = 1;
goto err;
}
for (;;)
{
int bytes_read;
bytes_read = my_read(index_file, io_buf, IO_SIZE, MYF(0));
if (bytes_read < 0) // error
{
error=1;
goto err;
}
if (!bytes_read)
break; // end of file
// otherwise, we've read something and need to write it out
if (my_write(tmp_fd, io_buf, bytes_read, MYF(MY_WME|MY_NABP)))
{
error=1;
goto err;
}
}
err:
if (tmp_fd)
my_close(tmp_fd, MYF(MY_WME));
if (error)
my_delete(fname, MYF(0)); // do not report error if the file is not there
else
{
my_close(index_file, MYF(MY_WME));
if (my_rename(fname,index_file_name,MYF(MY_WME)) ||
(index_file=my_open(index_file_name,O_BINARY|O_RDWR|O_APPEND,
MYF(MY_WME)))<0 ||
my_delete(rli->relay_log_name, MYF(MY_WME)))
error=1;
if ((error=find_first_log(&rli->linfo,"",0/*no mutex*/)))
{
char buff[22];
sql_print_error("next log error=%d,offset=%s,log=%s",error,
llstr(rli->linfo.index_file_offset,buff),
rli->linfo.log_file_name);
goto err2;
}
rli->relay_log_pos = 4;
strnmov(rli->relay_log_name,rli->linfo.log_file_name,
sizeof(rli->relay_log_name));
}
// no need to free io_buf because we allocated both fname and io_buf in
// one malloc()
err2:
pthread_mutex_unlock(&LOCK_index);
my_free(fname, MYF(MY_WME));
return error;
}
int MYSQL_LOG::purge_logs(THD* thd, const char* to_log)
{
......@@ -396,8 +520,7 @@ int MYSQL_LOG::purge_logs(THD* thd, const char* to_log)
}
logs_to_keep_inited = 1;
for(;;)
for (;;)
{
my_off_t init_purge_offset= my_b_tell(&io_cache);
if (!(fname_len=my_b_gets(&io_cache, fname, FN_REFLEN)))
......@@ -409,14 +532,14 @@ int MYSQL_LOG::purge_logs(THD* thd, const char* to_log)
}
fname[--fname_len]=0; // kill \n
if(!memcmp(fname, to_log, fname_len + 1 ))
if (!memcmp(fname, to_log, fname_len + 1 ))
{
found_log = 1;
purge_offset = init_purge_offset;
}
// if one of the logs before the target is in use
if(!found_log && log_in_use(fname))
if (!found_log && log_in_use(fname))
{
error = LOG_INFO_IN_USE;
goto err;
......@@ -432,13 +555,13 @@ int MYSQL_LOG::purge_logs(THD* thd, const char* to_log)
}
end_io_cache(&io_cache);
if(!found_log)
if (!found_log)
{
error = LOG_INFO_EOF;
goto err;
}
for(i = 0; i < logs_to_purge.elements; i++)
for (i = 0; i < logs_to_purge.elements; i++)
{
char* l;
get_dynamic(&logs_to_purge, (gptr)&l, i);
......@@ -461,9 +584,9 @@ during log purge for write");
#else
my_close(index_file, MYF(MY_WME));
my_delete(index_file_name, MYF(MY_WME));
if(!(index_file = my_open(index_file_name,
if ((index_file = my_open(index_file_name,
O_CREAT | O_BINARY | O_RDWR | O_APPEND,
MYF(MY_WME))))
MYF(MY_WME)))<0)
{
sql_print_error("Could not re-open the binlog index file \
during log purge for write");
......@@ -472,7 +595,7 @@ during log purge for write");
}
#endif
for(i = 0; i < logs_to_keep.elements; i++)
for (i = 0; i < logs_to_keep.elements; i++)
{
char* l;
get_dynamic(&logs_to_keep, (gptr)&l, i);
......@@ -490,15 +613,14 @@ during log purge for write");
err:
pthread_mutex_unlock(&LOCK_index);
if(logs_to_purge_inited)
if (logs_to_purge_inited)
delete_dynamic(&logs_to_purge);
if(logs_to_keep_inited)
if (logs_to_keep_inited)
delete_dynamic(&logs_to_keep);
end_io_cache(&io_cache);
return error;
}
// we assume that buf has at least FN_REFLEN bytes alloced
void MYSQL_LOG::make_log_name(char* buf, const char* log_ident)
{
......@@ -542,6 +664,8 @@ void MYSQL_LOG::new_file(bool inside_mutex)
return; // Something went wrong
}
if (log_type == LOG_BIN)
{
if (!no_auto_events)
{
/*
We log the whole file name for log file as the user may decide
......@@ -549,24 +673,28 @@ void MYSQL_LOG::new_file(bool inside_mutex)
*/
THD* thd = current_thd;
Rotate_log_event r(thd,new_name+dirname_length(new_name));
r.set_log_seq(0, this);
r.set_log_pos(this);
/*
This log rotation could have been initiated by a master of
the slave running with log-bin we set the flag on rotate
event to prevent inifinite log rotation loop
*/
if (thd && slave_thd && thd == slave_thd)
if (thd && thd->slave_thread)
r.flags |= LOG_EVENT_FORCED_ROTATE_F;
r.write(&log_file);
VOID(pthread_cond_broadcast(&COND_binlog_update));
}
// update needs to be signaled even if there is no rotate event
// log rotation should give the waiting thread a signal to
// discover EOF and move on to the next log
signal_update();
}
else
strmov(new_name, old_name); // Reopen old file name
}
name=0;
close();
open(old_name, log_type, new_name);
open(old_name, log_type, new_name, io_cache_type, no_auto_events);
my_free(old_name,MYF(0));
last_time=query_start=0;
write_error=0;
......@@ -575,6 +703,31 @@ void MYSQL_LOG::new_file(bool inside_mutex)
}
}
bool MYSQL_LOG::appendv(const char* buf, uint len,...)
{
bool error = 0;
va_list(args);
va_start(args,len);
pthread_mutex_lock(&LOCK_log);
do
{
if (my_b_append(&log_file,buf,len))
{
error = 1;
break;
}
if ((uint)my_b_append_tell(&log_file) > max_binlog_size)
{
new_file(1);
}
} while ((buf=va_arg(args,const char*)) && (len=va_arg(args,uint)));
if (!error)
signal_update();
pthread_mutex_unlock(&LOCK_log);
return error;
}
bool MYSQL_LOG::write(THD *thd,enum enum_server_command command,
const char *format,...)
......@@ -684,11 +837,12 @@ bool MYSQL_LOG::write(Log_event* event_info)
return 0;
}
error=1;
// no check for auto events flag here - this write method should
// never be called if auto-events are enabled
if (thd && thd->last_insert_id_used)
{
Intvar_log_event e(thd,(uchar)LAST_INSERT_ID_EVENT,thd->last_insert_id);
e.set_log_seq(thd, this);
e.set_log_pos(this);
if (thd->server_id)
e.server_id = thd->server_id;
if (e.write(file))
......@@ -697,7 +851,7 @@ bool MYSQL_LOG::write(Log_event* event_info)
if (thd && thd->insert_id_used)
{
Intvar_log_event e(thd,(uchar)INSERT_ID_EVENT,thd->last_insert_id);
e.set_log_seq(thd, this);
e.set_log_pos(this);
if (thd->server_id)
e.server_id = thd->server_id;
if (e.write(file))
......@@ -712,12 +866,12 @@ bool MYSQL_LOG::write(Log_event* event_info)
// just in case somebody wants it later
thd->query_length = (uint)(p - buf);
Query_log_event e(thd, buf);
e.set_log_seq(thd, this);
e.set_log_pos(this);
if (e.write(file))
goto err;
thd->query_length = save_query_length; // clean up
}
event_info->set_log_seq(thd, this);
event_info->set_log_pos(this);
if (event_info->write(file) ||
file == &log_file && flush_io_cache(file))
goto err;
......@@ -734,7 +888,7 @@ bool MYSQL_LOG::write(Log_event* event_info)
write_error=1;
}
if (file == &log_file)
VOID(pthread_cond_broadcast(&COND_binlog_update));
signal_update();
}
if (should_rotate)
new_file(1); // inside mutex
......@@ -765,7 +919,7 @@ bool MYSQL_LOG::write(IO_CACHE *cache)
if (is_open())
{
uint length;
//QQ: this looks like a bug - why READ_CACHE?
if (reinit_io_cache(cache, READ_CACHE, 0, 0, 0))
{
sql_print_error(ER(ER_ERROR_ON_WRITE), cache->file_name, errno);
......@@ -800,7 +954,7 @@ bool MYSQL_LOG::write(IO_CACHE *cache)
if (error)
write_error=1;
else
VOID(pthread_cond_broadcast(&COND_binlog_update));
signal_update();
VOID(pthread_mutex_unlock(&LOCK_log));
......@@ -930,21 +1084,37 @@ bool MYSQL_LOG::write(THD *thd,const char *query, uint query_length,
return error;
}
void MYSQL_LOG:: wait_for_update(THD* thd)
{
const char* old_msg = thd->enter_cond(&update_cond, &LOCK_log,
"Slave: waiting for binlog update");
pthread_cond_wait(&update_cond, &LOCK_log);
// this is not a bug - we unlock the mutex for the caller, and expect him
// to lock it and then not unlock it upon return. This is a rather odd
// way of doing things, but this is the cleanest way I could think of to
// solve the race deadlock caused by THD::awake() first acquiring mysys_var
// mutex and then the current mutex, while wait_for_update being called with
// the current mutex already aquired and THD::exit_cond() trying to acquire
// mysys_var mutex. We do need the mutex to be acquired prior to the
// invocation of wait_for_update in all cases, so mutex acquisition inside
// wait_for_update() is not an option
pthread_mutex_unlock(&LOCK_log);
thd->exit_cond(old_msg);
}
void MYSQL_LOG::close(bool exiting)
{ // One can't set log_type here!
if (is_open())
{
File file=log_file.file;
if (log_type == LOG_BIN)
if (log_type == LOG_BIN && !no_auto_events)
{
Stop_log_event s;
s.set_log_seq(0, this);
s.set_log_pos(this);
s.write(&log_file);
VOID(pthread_cond_broadcast(&COND_binlog_update));
signal_update();
}
end_io_cache(&log_file);
if (my_close(file,MYF(0)) < 0 && ! write_error)
if (my_close(log_file.file,MYF(0)) < 0 && ! write_error)
{
write_error=1;
sql_print_error(ER(ER_ERROR_ON_WRITE),name,errno);
......
sql/log_event.cc
View file @ 6291b7b5
......@@ -24,6 +24,8 @@
#include <my_dir.h>
#endif /* MYSQL_CLIENT */
#include <assert.h>
#ifdef MYSQL_CLIENT
static void pretty_print_str(FILE* file, char* str, int len)
{
......@@ -118,14 +120,14 @@ Log_event::Log_event(THD* thd_arg, uint16 flags_arg):
if (thd)
{
server_id = thd->server_id;
log_seq = thd->log_seq;
when = thd->start_time;
log_pos = thd->log_pos;
}
else
{
server_id = ::server_id;
log_seq = 0;
when = time(NULL);
log_pos=0;
}
}
......@@ -156,12 +158,12 @@ Log_event::Log_event(const char* buf, bool old_format):
server_id = uint4korr(buf + SERVER_ID_OFFSET);
if (old_format)
{
log_seq=0;
log_pos=0;
flags=0;
}
else
{
log_seq = uint4korr(buf + LOG_SEQ_OFFSET);
log_pos = uint4korr(buf + LOG_POS_OFFSET);
flags = uint2korr(buf + FLAGS_OFFSET);
}
#ifndef MYSQL_CLIENT
......@@ -172,13 +174,13 @@ Log_event::Log_event(const char* buf, bool old_format):
#ifndef MYSQL_CLIENT
int Log_event::exec_event(struct st_master_info* mi)
int Log_event::exec_event(struct st_relay_log_info* rli)
{
if (mi)
if (rli)
{
thd->log_seq = 0;
mi->inc_pos(get_event_len(), log_seq);
flush_master_info(mi);
rli->inc_pos(get_event_len(),log_pos);
DBUG_ASSERT(rli->sql_thd != 0);
flush_relay_log_info(rli);
}
return 0;
}
......@@ -193,14 +195,14 @@ void Query_log_event::pack_info(String* packet)
char buf[256];
String tmp(buf, sizeof(buf));
tmp.length(0);
if(db && db_len)
if (db && db_len)
{
tmp.append("use ");
tmp.append(db, db_len);
tmp.append("; ", 2);
}
if(query && q_len)
if (query && q_len)
tmp.append(query, q_len);
net_store_data(packet, (char*)tmp.ptr(), tmp.length());
}
......@@ -345,7 +347,7 @@ void Log_event::init_show_field_list(List<Item>* field_list)
field_list->push_back(new Item_empty_string("Pos", 20));
field_list->push_back(new Item_empty_string("Event_type", 20));
field_list->push_back(new Item_empty_string("Server_id", 20));
field_list->push_back(new Item_empty_string("Log_seq", 20));
field_list->push_back(new Item_empty_string("Orig_log_pos", 20));
field_list->push_back(new Item_empty_string("Info", 20));
}
......@@ -363,7 +365,7 @@ int Log_event::net_send(THD* thd, const char* log_name, my_off_t pos)
event_type = get_type_str();
net_store_data(packet, event_type, strlen(event_type));
net_store_data(packet, server_id);
net_store_data(packet, log_seq);
net_store_data(packet, log_pos);
pack_info(packet);
return my_net_write(&thd->net, (char*)packet->ptr(), packet->length());
}
......@@ -392,7 +394,7 @@ int Log_event::write_header(IO_CACHE* file)
long tmp=get_data_size() + LOG_EVENT_HEADER_LEN;
int4store(pos, tmp);
pos += 4;
int4store(pos, log_seq);
int4store(pos, log_pos);
pos += 4;
int2store(pos, flags);
pos += 2;
......@@ -456,7 +458,6 @@ int Log_event::read_log_event(IO_CACHE* file, String* packet,
#define LOCK_MUTEX
#endif
// allocates memory - the caller is responsible for clean-up
#ifndef MYSQL_CLIENT
Log_event* Log_event::read_log_event(IO_CACHE* file,
......@@ -501,7 +502,7 @@ Log_event* Log_event::read_log_event(IO_CACHE* file, bool old_format)
}
buf[data_len] = 0;
memcpy(buf, head, header_size);
if(my_b_read(file, (byte*) buf + header_size,
if (my_b_read(file, (byte*) buf + header_size,
data_len - header_size))
{
error = "read error";
......@@ -511,9 +512,10 @@ Log_event* Log_event::read_log_event(IO_CACHE* file, bool old_format)
res->register_temp_buf(buf);
err:
UNLOCK_MUTEX;
if(error)
if (error)
{
sql_print_error(error);
sql_print_error("Error in Log_event::read_log_event(): '%s', \
data_len=%d,event_type=%d",error,data_len,head[EVENT_TYPE_OFFSET]);
my_free(buf, MYF(MY_ALLOW_ZERO_PTR));
}
return res;
......@@ -581,9 +583,11 @@ Log_event* Log_event::read_log_event(const char* buf, int event_len,
#ifdef MYSQL_CLIENT
void Log_event::print_header(FILE* file)
{
char llbuff[22];
fputc('#', file);
print_timestamp(file);
fprintf(file, " server id %d ", server_id);
fprintf(file, " server id %d log_pos %s ", server_id,
llstr(log_pos,llbuff));
}
void Log_event::print_timestamp(FILE* file, time_t* ts)
......@@ -1187,12 +1191,12 @@ void Load_log_event::print(FILE* file, bool short_form, char* last_db)
#ifndef MYSQL_CLIENT
void Log_event::set_log_seq(THD* thd, MYSQL_LOG* log)
void Log_event::set_log_pos(MYSQL_LOG* log)
{
log_seq = (thd && thd->log_seq) ? thd->log_seq++ : log->log_seq++;
if (!log_pos)
log_pos = my_b_tell(&log->log_file);
}
void Load_log_event::set_fields(List<Item> &fields)
{
uint i;
......@@ -1205,14 +1209,20 @@ void Load_log_event::set_fields(List<Item> &fields)
}
Slave_log_event::Slave_log_event(THD* thd_arg,struct st_master_info* mi):
Slave_log_event::Slave_log_event(THD* thd_arg,
struct st_relay_log_info* rli):
Log_event(thd_arg),mem_pool(0),master_host(0)
{
if(!mi->inited)
if(!rli->inited)
return;
pthread_mutex_lock(&mi->lock);
MASTER_INFO* mi = rli->mi;
// TODO: re-write this better without holding both
// locks at the same time
pthread_mutex_lock(&mi->data_lock);
pthread_mutex_lock(&rli->data_lock);
master_host_len = strlen(mi->host);
master_log_len = strlen(mi->log_file_name);
master_log_len = strlen(rli->master_log_name);
// on OOM, just do not initialize the structure and print the error
if((mem_pool = (char*)my_malloc(get_data_size() + 1,
MYF(MY_WME))))
......@@ -1220,13 +1230,14 @@ Slave_log_event::Slave_log_event(THD* thd_arg,struct st_master_info* mi):
master_host = mem_pool + SL_MASTER_HOST_OFFSET ;
memcpy(master_host, mi->host, master_host_len + 1);
master_log = master_host + master_host_len + 1;
memcpy(master_log, mi->log_file_name, master_log_len + 1);
memcpy(master_log, rli->master_log_name, master_log_len + 1);
master_port = mi->port;
master_pos = mi->pos;
master_pos = rli->master_log_pos;
}
else
sql_print_error("Out of memory while recording slave event");
pthread_mutex_unlock(&mi->lock);
pthread_mutex_unlock(&rli->data_lock);
pthread_mutex_unlock(&mi->data_lock);
}
......@@ -1533,7 +1544,7 @@ void Execute_load_log_event::pack_info(String* packet)
#endif
#ifndef MYSQL_CLIENT
int Query_log_event::exec_event(struct st_master_info* mi)
int Query_log_event::exec_event(struct st_relay_log_info* rli)
{
int expected_error,actual_error = 0;
init_sql_alloc(&thd->mem_root, 8192,0);
......@@ -1553,7 +1564,7 @@ int Query_log_event::exec_event(struct st_master_info* mi)
// sanity check to make sure the master did not get a really bad
// error on the query
if (!check_expected_error(thd, (expected_error = error_code)))
if (!check_expected_error(thd,rli,(expected_error = error_code)))
{
mysql_parse(thd, thd->query, q_len);
if (expected_error !=
......@@ -1570,8 +1581,8 @@ int Query_log_event::exec_event(struct st_master_info* mi)
else if (expected_error == actual_error)
{
thd->query_error = 0;
*last_slave_error = 0;
last_slave_errno = 0;
*rli->last_slave_error = 0;
rli->last_slave_errno = 0;
}
}
else
......@@ -1592,17 +1603,17 @@ int Query_log_event::exec_event(struct st_master_info* mi)
if (thd->query_error || thd->fatal_error)
{
slave_print_error(actual_error, "error '%s' on query '%s'",
slave_print_error(rli,actual_error, "error '%s' on query '%s'",
actual_error ? thd->net.last_error :
"unexpected success or fatal error", query);
free_root(&thd->mem_root,0);
return 1;
}
free_root(&thd->mem_root,0);
return Log_event::exec_event(mi);
return Log_event::exec_event(rli);
}
int Load_log_event::exec_event(NET* net, struct st_master_info* mi)
int Load_log_event::exec_event(NET* net, struct st_relay_log_info* rli)
{
init_sql_alloc(&thd->mem_root, 8192,0);
thd->db = rewrite_db((char*)db);
......@@ -1625,6 +1636,7 @@ int Load_log_event::exec_event(NET* net, struct st_master_info* mi)
// the table will be opened in mysql_load
if(table_rules_on && !tables_ok(thd, &tables))
{
// TODO: this is a bug - this needs to be moved to the I/O thread
if (net)
skip_load_data_infile(net);
}
......@@ -1632,7 +1644,7 @@ int Load_log_event::exec_event(NET* net, struct st_master_info* mi)
{
char llbuff[22];
enum enum_duplicates handle_dup = DUP_IGNORE;
if(sql_ex.opt_flags && REPLACE_FLAG)
if (sql_ex.opt_flags && REPLACE_FLAG)
handle_dup = DUP_REPLACE;
sql_exchange ex((char*)fname, sql_ex.opt_flags &&
DUMPFILE_FLAG );
......@@ -1663,7 +1675,7 @@ int Load_log_event::exec_event(NET* net, struct st_master_info* mi)
thd->query_error = 1;
if(thd->cuted_fields)
sql_print_error("Slave: load data infile at position %s in log \
'%s' produced %d warning(s)", llstr(mi->pos,llbuff), RPL_LOG_NAME,
'%s' produced %d warning(s)", llstr(rli->master_log_pos,llbuff), RPL_LOG_NAME,
thd->cuted_fields );
if(net)
net->pkt_nr = thd->net.pkt_nr;
......@@ -1673,6 +1685,7 @@ int Load_log_event::exec_event(NET* net, struct st_master_info* mi)
{
// we will just ask the master to send us /dev/null if we do not
// want to load the data
// TODO: this a bug - needs to be done in I/O thread
if (net)
skip_load_data_infile(net);
}
......@@ -1683,10 +1696,11 @@ int Load_log_event::exec_event(NET* net, struct st_master_info* mi)
if(thd->query_error)
{
int sql_error = thd->net.last_errno;
if(!sql_error)
if (!sql_error)
sql_error = ER_UNKNOWN_ERROR;
slave_print_error(sql_error, "Slave: Error '%s' running load data infile ",
slave_print_error(rli,sql_error,
"Slave: Error '%s' running load data infile ",
ER_SAFE(sql_error));
free_root(&thd->mem_root,0);
return 1;
......@@ -1699,38 +1713,43 @@ int Load_log_event::exec_event(NET* net, struct st_master_info* mi)
return 1;
}
return Log_event::exec_event(mi);
return Log_event::exec_event(rli);
}
int Start_log_event::exec_event(struct st_master_info* mi)
int Start_log_event::exec_event(struct st_relay_log_info* rli)
{
if (!mi->old_format)
if (!rli->mi->old_format)
{
close_temporary_tables(thd);
cleanup_load_tmpdir();
}
return Log_event::exec_event(mi);
return Log_event::exec_event(rli);
}
int Stop_log_event::exec_event(struct st_master_info* mi)
int Stop_log_event::exec_event(struct st_relay_log_info* rli)
{
if (mi->pos > 4) // stop event should be ignored after rotate event
// do not clean up immediately after rotate event
if (rli->master_log_pos > 4)
{
close_temporary_tables(thd);
cleanup_load_tmpdir();
mi->inc_pos(get_event_len(), log_seq);
flush_master_info(mi);
}
thd->log_seq = 0;
// we do not want to update master_log pos because we get a rotate event
// before stop, so by now master_log_name is set to the next log
// if we updated it, we will have incorrect master coordinates and this
// could give false triggers in MASTER_POS_WAIT() that we have reached
// the targed position when in fact we have not
rli->inc_pos(get_event_len(), 0);
flush_relay_log_info(rli);
return 0;
}
int Rotate_log_event::exec_event(struct st_master_info* mi)
int Rotate_log_event::exec_event(struct st_relay_log_info* rli)
{
bool rotate_binlog = 0, write_slave_event = 0;
char* log_name = mi->log_file_name;
pthread_mutex_lock(&mi->lock);
char* log_name = rli->master_log_name;
pthread_mutex_lock(&rli->data_lock);
// TODO: probably needs re-write
// rotate local binlog only if the name of remote has changed
if (!*log_name || !(log_name[ident_len] == 0 &&
!memcmp(log_name, new_log_ident, ident_len)))
......@@ -1738,41 +1757,38 @@ int Rotate_log_event::exec_event(struct st_master_info* mi)
write_slave_event = (!(flags & LOG_EVENT_FORCED_ROTATE_F)
&& mysql_bin_log.is_open());
rotate_binlog = (*log_name && write_slave_event);
memcpy(log_name, new_log_ident,ident_len );
if (ident_len >= sizeof(rli->master_log_name))
return 1;
memcpy(log_name, new_log_ident,ident_len);
log_name[ident_len] = 0;
}
mi->pos = pos;
mi->last_log_seq = log_seq;
#ifndef DBUG_OFF
if (abort_slave_event_count)
++events_till_abort;
#endif
rli->master_log_pos = pos;
rli->relay_log_pos += get_event_len();
if (rotate_binlog)
{
mysql_bin_log.new_file();
mi->last_log_seq = 0;
rli->master_log_pos = 4;
}
pthread_cond_broadcast(&mi->cond);
pthread_mutex_unlock(&mi->lock);
flush_master_info(mi);
pthread_cond_broadcast(&rli->data_cond);
pthread_mutex_unlock(&rli->data_lock);
flush_relay_log_info(rli);
if (write_slave_event)
{
Slave_log_event s(thd, mi);
Slave_log_event s(thd, rli);
if (s.master_host)
{
s.set_log_seq(0, &mysql_bin_log);
s.set_log_pos(&mysql_bin_log);
s.server_id = ::server_id;
mysql_bin_log.write(&s);
}
}
thd->log_seq = 0;
return 0;
}
int Intvar_log_event::exec_event(struct st_master_info* mi)
int Intvar_log_event::exec_event(struct st_relay_log_info* rli)
{
switch(type)
switch (type)
{
case LAST_INSERT_ID_EVENT:
thd->last_insert_id_used = 1;
......@@ -1782,18 +1798,18 @@ int Intvar_log_event::exec_event(struct st_master_info* mi)
thd->next_insert_id = val;
break;
}
mi->inc_pending(get_event_len());
rli->inc_pending(get_event_len());
return 0;
}
int Slave_log_event::exec_event(struct st_master_info* mi)
int Slave_log_event::exec_event(struct st_relay_log_info* rli)
{
if(mysql_bin_log.is_open())
mysql_bin_log.write(this);
return Log_event::exec_event(mi);
return Log_event::exec_event(rli);
}
int Create_file_log_event::exec_event(struct st_master_info* mi)
int Create_file_log_event::exec_event(struct st_relay_log_info* rli)
{
char fname_buf[FN_REFLEN+10];
char *p;
......@@ -1809,7 +1825,7 @@ int Create_file_log_event::exec_event(struct st_master_info* mi)
init_io_cache(&file, fd, IO_SIZE, WRITE_CACHE, (my_off_t)0, 0,
MYF(MY_WME|MY_NABP)))
{
slave_print_error(my_errno, "Could not open file '%s'", fname_buf);
slave_print_error(rli,my_errno, "Could not open file '%s'", fname_buf);
goto err;
}
......@@ -1820,7 +1836,7 @@ int Create_file_log_event::exec_event(struct st_master_info* mi)
if (write_base(&file))
{
strmov(p, ".info"); // to have it right in the error message
slave_print_error(my_errno, "Could not write to file '%s'", fname_buf);
slave_print_error(rli,my_errno, "Could not write to file '%s'", fname_buf);
goto err;
}
end_io_cache(&file);
......@@ -1830,12 +1846,12 @@ int Create_file_log_event::exec_event(struct st_master_info* mi)
if ((fd = my_open(fname_buf, O_WRONLY|O_CREAT|O_BINARY|O_TRUNC,
MYF(MY_WME))) < 0)
{
slave_print_error(my_errno, "Could not open file '%s'", fname_buf);
slave_print_error(rli,my_errno, "Could not open file '%s'", fname_buf);
goto err;
}
if (my_write(fd, (byte*) block, block_len, MYF(MY_WME+MY_NABP)))
{
slave_print_error(my_errno, "Write to '%s' failed", fname_buf);
slave_print_error(rli,my_errno, "Write to '%s' failed", fname_buf);
goto err;
}
if (mysql_bin_log.is_open())
......@@ -1846,10 +1862,10 @@ int Create_file_log_event::exec_event(struct st_master_info* mi)
end_io_cache(&file);
if (fd >= 0)
my_close(fd, MYF(0));
return error ? 1 : Log_event::exec_event(mi);
return error ? 1 : Log_event::exec_event(rli);
}
int Delete_file_log_event::exec_event(struct st_master_info* mi)
int Delete_file_log_event::exec_event(struct st_relay_log_info* rli)
{
char fname[FN_REFLEN+10];
char* p;
......@@ -1860,10 +1876,10 @@ int Delete_file_log_event::exec_event(struct st_master_info* mi)
(void)my_delete(fname, MYF(MY_WME));
if (mysql_bin_log.is_open())
mysql_bin_log.write(this);
return Log_event::exec_event(mi);
return Log_event::exec_event(rli);
}
int Append_block_log_event::exec_event(struct st_master_info* mi)
int Append_block_log_event::exec_event(struct st_relay_log_info* rli)
{
char fname[FN_REFLEN+10];
char* p;
......@@ -1873,12 +1889,12 @@ int Append_block_log_event::exec_event(struct st_master_info* mi)
memcpy(p, ".data", 6);
if ((fd = my_open(fname, O_WRONLY|O_APPEND|O_BINARY, MYF(MY_WME))) < 0)
{
slave_print_error(my_errno, "Could not open file '%s'", fname);
slave_print_error(rli,my_errno, "Could not open file '%s'", fname);
goto err;
}
if (my_write(fd, (byte*) block, block_len, MYF(MY_WME+MY_NABP)))
{
slave_print_error(my_errno, "Write to '%s' failed", fname);
slave_print_error(rli,my_errno, "Write to '%s' failed", fname);
goto err;
}
if (mysql_bin_log.is_open())
......@@ -1887,10 +1903,10 @@ int Append_block_log_event::exec_event(struct st_master_info* mi)
err:
if (fd >= 0)
my_close(fd, MYF(0));
return error ? error : Log_event::exec_event(mi);
return error ? error : Log_event::exec_event(rli);
}
int Execute_load_log_event::exec_event(struct st_master_info* mi)
int Execute_load_log_event::exec_event(struct st_relay_log_info* rli)
{
char fname[FN_REFLEN+10];
char* p;
......@@ -1906,7 +1922,7 @@ int Execute_load_log_event::exec_event(struct st_master_info* mi)
init_io_cache(&file, fd, IO_SIZE, READ_CACHE, (my_off_t)0, 0,
MYF(MY_WME|MY_NABP)))
{
slave_print_error(my_errno, "Could not open file '%s'", fname);
slave_print_error(rli,my_errno, "Could not open file '%s'", fname);
goto err;
}
if (!(lev = (Load_log_event*)Log_event::read_log_event(&file,
......@@ -1914,7 +1930,7 @@ int Execute_load_log_event::exec_event(struct st_master_info* mi)
(bool)0))
|| lev->get_type_code() != NEW_LOAD_EVENT)
{
slave_print_error(0, "File '%s' appears corrupted", fname);
slave_print_error(rli,0, "File '%s' appears corrupted", fname);
goto err;
}
// we want to disable binary logging in slave thread
......@@ -1927,7 +1943,7 @@ int Execute_load_log_event::exec_event(struct st_master_info* mi)
lev->thd = thd;
if (lev->exec_event(0,0))
{
slave_print_error(my_errno, "Failed executing load from '%s'", fname);
slave_print_error(rli,my_errno, "Failed executing load from '%s'", fname);
thd->options = save_options;
goto err;
}
......@@ -1943,7 +1959,7 @@ int Execute_load_log_event::exec_event(struct st_master_info* mi)
end_io_cache(&file);
if (fd >= 0)
my_close(fd, MYF(0));
return error ? error : Log_event::exec_event(mi);
return error ? error : Log_event::exec_event(rli);
}
......
sql/log_event.h
View file @ 6291b7b5
......@@ -34,7 +34,7 @@
#define LOG_READ_TOO_LARGE -7
#define LOG_EVENT_OFFSET 4
#define BINLOG_VERSION 2
#define BINLOG_VERSION 3
/* we could have used SERVER_VERSION_LENGTH, but this introduces an
obscure dependency - if somebody decided to change SERVER_VERSION_LENGTH
......@@ -120,7 +120,7 @@ struct sql_ex_info
#define EVENT_TYPE_OFFSET 4
#define SERVER_ID_OFFSET 5
#define EVENT_LEN_OFFSET 9
#define LOG_SEQ_OFFSET 13
#define LOG_POS_OFFSET 13
#define FLAGS_OFFSET 17
/* start event post-header */
......@@ -206,7 +206,7 @@ class THD;
extern uint32 server_id;
struct st_master_info;
struct st_relay_log_info;
class Log_event
{
......@@ -214,7 +214,7 @@ class Log_event
time_t when;
ulong exec_time;
uint32 server_id;
uint32 log_seq;
uint32 log_pos;
uint16 flags;
int cached_event_len;
char* temp_buf;
......@@ -282,11 +282,11 @@ class Log_event
#ifndef MYSQL_CLIENT
static int read_log_event(IO_CACHE* file, String* packet,
pthread_mutex_t* log_lock);
void set_log_seq(THD* thd, MYSQL_LOG* log);
void set_log_pos(MYSQL_LOG* log);
virtual void pack_info(String* packet);
int net_send(THD* thd, const char* log_name, my_off_t pos);
static void init_show_field_list(List<Item>* field_list);
virtual int exec_event(struct st_master_info* mi);
virtual int exec_event(struct st_relay_log_info* rli);
virtual const char* get_db()
{
return thd ? thd->db : 0;
......@@ -316,7 +316,7 @@ class Query_log_event: public Log_event
bool using_trans=0);
const char* get_db() { return db; }
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
int exec_event(struct st_relay_log_info* rli);
bool get_cache_stmt() { return cache_stmt; }
#endif
......@@ -359,9 +359,9 @@ class Slave_log_event: public Log_event
ulonglong master_pos;
#ifndef MYSQL_CLIENT
Slave_log_event(THD* thd_arg, struct st_master_info* mi);
Slave_log_event(THD* thd_arg, struct st_relay_log_info* rli);
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
int exec_event(struct st_relay_log_info* rli);
#endif
Slave_log_event(const char* buf, int event_len);
......@@ -407,11 +407,11 @@ class Load_log_event: public Log_event
void set_fields(List<Item> &fields_arg);
void pack_info(String* packet);
const char* get_db() { return db; }
int exec_event(struct st_master_info* mi)
int exec_event(struct st_relay_log_info* rli)
{
return exec_event(thd->slave_net,mi);
return exec_event(thd->slave_net,rli);
}
int exec_event(NET* net, struct st_master_info* mi);
int exec_event(NET* net, struct st_relay_log_info* rli);
#endif
Load_log_event(const char* buf, int event_len, bool old_format);
......@@ -465,7 +465,7 @@ class Start_log_event: public Log_event
}
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
int exec_event(struct st_relay_log_info* rli);
#endif
#ifdef MYSQL_CLIENT
void print(FILE* file, bool short_form = 0, char* last_db = 0);
......@@ -491,7 +491,7 @@ class Intvar_log_event: public Log_event
bool is_valid() { return 1; }
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
int exec_event(struct st_relay_log_info* rli);
#endif
#ifdef MYSQL_CLIENT
......@@ -517,7 +517,7 @@ class Stop_log_event: public Log_event
void print(FILE* file, bool short_form = 0, char* last_db = 0);
#endif
#ifndef MYSQL_CLIENT
int exec_event(struct st_master_info* mi);
int exec_event(struct st_relay_log_info* rli);
#endif
};
......@@ -553,7 +553,7 @@ class Rotate_log_event: public Log_event
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
int exec_event(struct st_relay_log_info* rli);
#endif
};
......@@ -602,7 +602,7 @@ class Create_file_log_event: public Load_log_event
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
int exec_event(struct st_relay_log_info* rli);
#endif
};
......@@ -616,7 +616,7 @@ class Append_block_log_event: public Log_event
#ifndef MYSQL_CLIENT
Append_block_log_event(THD* thd, char* block_arg,
uint block_len_arg);
int exec_event(struct st_master_info* mi);
int exec_event(struct st_relay_log_info* rli);
#endif
Append_block_log_event(const char* buf, int event_len);
......@@ -659,7 +659,7 @@ class Delete_file_log_event: public Log_event
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
int exec_event(struct st_relay_log_info* rli);
#endif
};
......@@ -686,7 +686,7 @@ class Execute_load_log_event: public Log_event
#endif
#ifndef MYSQL_CLIENT
void pack_info(String* packet);
int exec_event(struct st_master_info* mi);
int exec_event(struct st_relay_log_info* rli);
#endif
};
......
sql/mini_client.cc
View file @ 6291b7b5
......@@ -101,7 +101,7 @@ static MYSQL_FIELD *unpack_fields(MYSQL_DATA *data,MEM_ROOT *alloc,uint fields,
my_bool default_value,
my_bool long_flag_protocol);
static void mc_end_server(MYSQL *mysql);
void mc_end_server(MYSQL *mysql);
static int mc_sock_connect(File s, const struct sockaddr *name, uint namelen, uint to);
static void mc_free_old_query(MYSQL *mysql);
static int mc_send_file_to_server(MYSQL *mysql, const char *filename);
......@@ -206,8 +206,7 @@ HANDLE create_named_pipe(NET *net, uint connect_timeout, char **arg_host,
** Init MySQL structure or allocate one
****************************************************************************/
MYSQL * STDCALL
mc_mysql_init(MYSQL *mysql)
MYSQL *mc_mysql_init(MYSQL *mysql)
{
init_client_errs();
if (!mysql)
......@@ -229,7 +228,7 @@ mc_mysql_init(MYSQL *mysql)
** Shut down connection
**************************************************************************/
static void
void
mc_end_server(MYSQL *mysql)
{
DBUG_ENTER("mc_end_server");
......@@ -351,7 +350,7 @@ static int mc_sock_connect(my_socket s, const struct sockaddr *name,
** or packet is an error message
*****************************************************************************/
ulong STDCALL
ulong
mc_net_safe_read(MYSQL *mysql)
{
NET *net= &mysql->net;
......@@ -412,17 +411,17 @@ max_allowed_packet on this server");
}
char * STDCALL mc_mysql_error(MYSQL *mysql)
char * mc_mysql_error(MYSQL *mysql)
{
return (mysql)->net.last_error;
}
int STDCALL mc_mysql_errno(MYSQL *mysql)
int mc_mysql_errno(MYSQL *mysql)
{
return (mysql)->net.last_errno;
}
my_bool STDCALL mc_mysql_reconnect(MYSQL *mysql)
my_bool mc_mysql_reconnect(MYSQL *mysql)
{
MYSQL tmp_mysql;
DBUG_ENTER("mc_mysql_reconnect");
......@@ -452,7 +451,7 @@ my_bool STDCALL mc_mysql_reconnect(MYSQL *mysql)
int STDCALL
int
mc_simple_command(MYSQL *mysql,enum enum_server_command command,
const char *arg, uint length, my_bool skipp_check)
{
......@@ -505,7 +504,7 @@ mc_simple_command(MYSQL *mysql,enum enum_server_command command,
}
MYSQL * STDCALL
MYSQL *
mc_mysql_connect(MYSQL *mysql,const char *host, const char *user,
const char *passwd, const char *db,
uint port, const char *unix_socket,uint client_flag)
......@@ -856,7 +855,7 @@ mc_mysql_connect(MYSQL *mysql,const char *host, const char *user,
** NB! Errors are not reported until you do mysql_real_connect.
**************************************************************************
*/
int STDCALL
int
mysql_ssl_clear(MYSQL *mysql)
{
my_free(mysql->options.ssl_key, MYF(MY_ALLOW_ZERO_PTR));
......@@ -879,7 +878,7 @@ mysql_ssl_clear(MYSQL *mysql)
** If handle is alloced by mysql connect free it.
*************************************************************************/
void STDCALL
void
mc_mysql_close(MYSQL *mysql)
{
DBUG_ENTER("mysql_close");
......@@ -910,7 +909,7 @@ mc_mysql_close(MYSQL *mysql)
DBUG_VOID_RETURN;
}
void STDCALL mc_mysql_free_result(MYSQL_RES *result)
void mc_mysql_free_result(MYSQL_RES *result)
{
DBUG_ENTER("mc_mysql_free_result");
DBUG_PRINT("enter",("mysql_res: %lx",result));
......@@ -988,13 +987,13 @@ mc_unpack_fields(MYSQL_DATA *data,MEM_ROOT *alloc,uint fields,
DBUG_RETURN(result);
}
int STDCALL
int
mc_mysql_send_query(MYSQL* mysql, const char* query, uint length)
{
return mc_simple_command(mysql, COM_QUERY, query, length, 1);
}
int STDCALL mc_mysql_read_query_result(MYSQL *mysql)
int mc_mysql_read_query_result(MYSQL *mysql)
{
uchar *pos;
ulong field_count;
......@@ -1042,7 +1041,7 @@ int STDCALL mc_mysql_read_query_result(MYSQL *mysql)
DBUG_RETURN(0);
}
int STDCALL mc_mysql_query(MYSQL *mysql, const char *query, uint length)
int mc_mysql_query(MYSQL *mysql, const char *query, uint length)
{
DBUG_ENTER("mysql_real_query");
DBUG_PRINT("enter",("handle: %lx",mysql));
......@@ -1289,17 +1288,17 @@ static int mc_read_one_row(MYSQL *mysql,uint fields,MYSQL_ROW row,
return 0;
}
my_ulonglong STDCALL mc_mysql_num_rows(MYSQL_RES *res)
my_ulonglong mc_mysql_num_rows(MYSQL_RES *res)
{
return res->row_count;
}
unsigned int STDCALL mc_mysql_num_fields(MYSQL_RES *res)
unsigned int mc_mysql_num_fields(MYSQL_RES *res)
{
return res->field_count;
}
void STDCALL mc_mysql_data_seek(MYSQL_RES *result, my_ulonglong row)
void mc_mysql_data_seek(MYSQL_RES *result, my_ulonglong row)
{
MYSQL_ROWS *tmp=0;
DBUG_PRINT("info",("mysql_data_seek(%ld)",(long) row));
......@@ -1309,7 +1308,7 @@ void STDCALL mc_mysql_data_seek(MYSQL_RES *result, my_ulonglong row)
result->data_cursor = tmp;
}
MYSQL_ROW STDCALL mc_mysql_fetch_row(MYSQL_RES *res)
MYSQL_ROW mc_mysql_fetch_row(MYSQL_RES *res)
{
DBUG_ENTER("mc_mysql_fetch_row");
if (!res->data)
......@@ -1344,7 +1343,7 @@ MYSQL_ROW STDCALL mc_mysql_fetch_row(MYSQL_RES *res)
}
}
int STDCALL mc_mysql_select_db(MYSQL *mysql, const char *db)
int mc_mysql_select_db(MYSQL *mysql, const char *db)
{
int error;
DBUG_ENTER("mysql_select_db");
......@@ -1358,7 +1357,7 @@ int STDCALL mc_mysql_select_db(MYSQL *mysql, const char *db)
}
MYSQL_RES * STDCALL mc_mysql_store_result(MYSQL *mysql)
MYSQL_RES *mc_mysql_store_result(MYSQL *mysql)
{
MYSQL_RES *result;
DBUG_ENTER("mysql_store_result");
......
sql/mini_client.h
View file @ 6291b7b5
......@@ -18,41 +18,35 @@
#define _MINI_CLIENT_H
MYSQL* STDCALL
mc_mysql_connect(MYSQL *mysql,const char *host, const char *user,
MYSQL* mc_mysql_connect(MYSQL *mysql,const char *host, const char *user,
const char *passwd, const char *db,
uint port, const char *unix_socket,uint client_flag);
int STDCALL
mc_simple_command(MYSQL *mysql,enum enum_server_command command, const char *arg,
int mc_simple_command(MYSQL *mysql,enum enum_server_command command, const char *arg,
uint length, my_bool skipp_check);
void STDCALL
mc_mysql_close(MYSQL *mysql);
MYSQL * STDCALL
mc_mysql_init(MYSQL *mysql);
void STDCALL
mc_mysql_debug(const char *debug);
ulong STDCALL
mc_net_safe_read(MYSQL *mysql);
char * STDCALL mc_mysql_error(MYSQL *mysql);
int STDCALL mc_mysql_errno(MYSQL *mysql);
my_bool STDCALL mc_mysql_reconnect(MYSQL* mysql);
int STDCALL mc_mysql_send_query(MYSQL* mysql, const char* query, uint length);
int STDCALL mc_mysql_read_query_result(MYSQL *mysql);
int STDCALL mc_mysql_query(MYSQL *mysql, const char *query, uint length);
MYSQL_RES * STDCALL mc_mysql_store_result(MYSQL *mysql);
void STDCALL mc_mysql_free_result(MYSQL_RES *result);
void STDCALL mc_mysql_data_seek(MYSQL_RES *result, my_ulonglong row);
my_ulonglong STDCALL mc_mysql_num_rows(MYSQL_RES *res);
unsigned int STDCALL mc_mysql_num_fields(MYSQL_RES *res);
MYSQL_ROW STDCALL mc_mysql_fetch_row(MYSQL_RES *res);
int STDCALL mc_mysql_select_db(MYSQL *mysql, const char *db);
void mc_mysql_close(MYSQL *mysql);
MYSQL * mc_mysql_init(MYSQL *mysql);
void mc_mysql_debug(const char *debug);
ulong mc_net_safe_read(MYSQL *mysql);
char * mc_mysql_error(MYSQL *mysql);
int mc_mysql_errno(MYSQL *mysql);
my_bool mc_mysql_reconnect(MYSQL* mysql);
int mc_mysql_send_query(MYSQL* mysql, const char* query, uint length);
int mc_mysql_read_query_result(MYSQL *mysql);
int mc_mysql_query(MYSQL *mysql, const char *query, uint length);
MYSQL_RES * mc_mysql_store_result(MYSQL *mysql);
void mc_mysql_free_result(MYSQL_RES *result);
void mc_mysql_data_seek(MYSQL_RES *result, my_ulonglong row);
my_ulonglong mc_mysql_num_rows(MYSQL_RES *res);
unsigned int mc_mysql_num_fields(MYSQL_RES *res);
MYSQL_ROW STDCALL mc_mysql_fetch_row(MYSQL_RES *res);
int mc_mysql_select_db(MYSQL *mysql, const char *db);
void mc_end_server(MYSQL *mysql);
#endif
sql/mysql_priv.h
View file @ 6291b7b5
......@@ -519,6 +519,10 @@ void sql_print_error(const char *format,...)
__attribute__ ((format (printf, 1, 2)));
bool fn_format_relative_to_data_home(my_string to, const char *name,
const char *dir, const char *extension);
void open_log(MYSQL_LOG *log, const char *hostname,
const char *opt_name, const char *extension,
enum_log_type type, bool read_append = 0,
bool no_auto_events = 0);
extern uint32 server_id;
extern char *mysql_data_home,server_version[SERVER_VERSION_LENGTH],
......@@ -550,9 +554,8 @@ extern pthread_mutex_t LOCK_mysql_create_db,LOCK_Acl,LOCK_open,
LOCK_thread_count,LOCK_mapped_file,LOCK_user_locks, LOCK_status,
LOCK_grant, LOCK_error_log, LOCK_delayed_insert,
LOCK_delayed_status, LOCK_delayed_create, LOCK_crypt, LOCK_timezone,
LOCK_binlog_update, LOCK_slave, LOCK_server_id, LOCK_slave_list;
extern pthread_cond_t COND_refresh,COND_thread_count, COND_binlog_update,
COND_slave_stopped, COND_slave_start;
LOCK_server_id, LOCK_slave_list, LOCK_active_mi;
extern pthread_cond_t COND_refresh,COND_thread_count;
extern pthread_attr_t connection_attrib;
extern bool opt_endinfo, using_udf_functions, locked_in_memory,
opt_using_transactions, use_temp_pool, mysql_embedded;
......@@ -588,6 +591,7 @@ extern struct show_var_st init_vars[];
extern struct show_var_st status_vars[];
extern enum db_type default_table_type;
extern enum enum_tx_isolation default_tx_isolation;
extern char glob_hostname[FN_REFLEN];
#ifndef __WIN__
extern pthread_t signal_thread;
......
sql/mysqld.cc
View file @ 6291b7b5
......@@ -206,7 +206,7 @@ SHOW_COMP_OPTION have_openssl=SHOW_OPTION_NO;
SHOW_COMP_OPTION have_symlink=SHOW_OPTION_YES;
static bool opt_skip_slave_start = 0; // If set, slave is not autostarted
bool opt_skip_slave_start = 0; // If set, slave is not autostarted
static bool opt_do_pstack = 0;
static ulong opt_specialflag=SPECIAL_ENGLISH;
static ulong back_log,connect_timeout,concurrency;
......@@ -225,8 +225,6 @@ bool opt_sql_bin_update = 0, opt_log_slave_updates = 0, opt_safe_show_db=0,
opt_safe_user_create = 0, opt_no_mix_types = 0;
FILE *bootstrap_file=0;
int segfaulted = 0; // ensure we do not enter SIGSEGV handler twice
extern MASTER_INFO glob_mi;
extern int init_master_info(MASTER_INFO* mi);
/*
If sql_bin_update is true, SQL_LOG_UPDATE and SQL_LOG_BIN are kept in sync,
......@@ -238,7 +236,7 @@ static struct rand_struct sql_rand;
static int cleanup_done;
static char **defaults_argv,time_zone[30];
static const char *default_table_type_name;
static char glob_hostname[FN_REFLEN];
char glob_hostname[FN_REFLEN];
#include "sslopt-vars.h"
#ifdef HAVE_OPENSSL
......@@ -274,7 +272,9 @@ volatile ulong cached_thread_count=0;
// replication parameters, if master_host is not NULL, we are a slave
my_string master_user = (char*) "test", master_password = 0, master_host=0,
master_info_file = (char*) "master.info", master_ssl_key=0, master_ssl_cert=0;
master_info_file = (char*) "master.info",
relay_log_info_file = (char*) "relay-log.info",
master_ssl_key=0, master_ssl_cert=0;
my_string report_user = 0, report_password = 0, report_host=0;
const char *localhost=LOCAL_HOST;
......@@ -321,6 +321,7 @@ bool mysql_embedded=1;
#endif
char *opt_bin_logname = 0; // this one needs to be seen in sql_parse.cc
char *opt_relay_logname = 0, *opt_relaylog_index_name=0;
char server_version[SERVER_VERSION_LENGTH]=MYSQL_SERVER_VERSION;
const char *first_keyword="first";
const char **errmesg; /* Error messages */
......@@ -356,11 +357,10 @@ pthread_mutex_t LOCK_mysql_create_db, LOCK_Acl, LOCK_open, LOCK_thread_count,
LOCK_error_log,
LOCK_delayed_insert, LOCK_delayed_status, LOCK_delayed_create,
LOCK_crypt, LOCK_bytes_sent, LOCK_bytes_received,
LOCK_binlog_update, LOCK_slave, LOCK_server_id,
LOCK_user_conn, LOCK_slave_list;
LOCK_server_id,
LOCK_user_conn, LOCK_slave_list, LOCK_active_mi;
pthread_cond_t COND_refresh,COND_thread_count,COND_binlog_update,
COND_slave_stopped, COND_slave_start;
pthread_cond_t COND_refresh,COND_thread_count;
pthread_cond_t COND_thread_cache,COND_flush_thread_cache;
pthread_t signal_thread;
pthread_attr_t connection_attrib;
......@@ -759,6 +759,7 @@ void clean_up(bool print_message)
my_free(allocated_mysql_tmpdir,MYF(MY_ALLOW_ZERO_PTR));
my_free(slave_load_tmpdir,MYF(MY_ALLOW_ZERO_PTR));
x_free(opt_bin_logname);
x_free(opt_relay_logname);
bitmap_free(&temp_pool);
free_max_user_conn();
end_slave_list();
......@@ -1095,6 +1096,8 @@ void end_thread(THD *thd, bool put_in_cache)
DBUG_PRINT("info", ("sending a broadcast"))
/* Tell main we are ready */
// TODO: explain why we broadcast outside of the lock or
// fix the bug - Sasha
(void) pthread_mutex_unlock(&LOCK_thread_count);
(void) pthread_cond_broadcast(&COND_thread_count);
DBUG_PRINT("info", ("unlocked thread_count mutex"))
......@@ -1266,6 +1269,7 @@ the thread stack. Please read http://www.mysql.com/doc/L/i/Linux.html\n\n",
#ifdef HAVE_STACKTRACE
if(!(test_flags & TEST_NO_STACKTRACE))
{
fprintf(stderr,"thd=%p\n",thd);
print_stacktrace(thd ? (gptr) thd->thread_stack : (gptr) 0,
thread_stack);
}
......@@ -1594,9 +1598,10 @@ const char *load_default_groups[]= { "mysqld","server",0 };
char *libwrapName=NULL;
#endif
static void open_log(MYSQL_LOG *log, const char *hostname,
void open_log(MYSQL_LOG *log, const char *hostname,
const char *opt_name, const char *extension,
enum_log_type type)
enum_log_type type, bool read_append,
bool no_auto_events)
{
char tmp[FN_REFLEN];
if (!opt_name || !opt_name[0])
......@@ -1620,7 +1625,8 @@ static void open_log(MYSQL_LOG *log, const char *hostname,
opt_name=tmp;
}
}
log->open(opt_name,type);
log->open(opt_name,type,0,(read_append) ? SEQ_READ_APPEND : WRITE_CACHE,
no_auto_events);
}
......@@ -1716,19 +1722,15 @@ int main(int argc, char **argv)
(void) pthread_mutex_init(&LOCK_bytes_sent,MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_bytes_received,MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_timezone,MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_binlog_update, MY_MUTEX_INIT_FAST); // QQ NOT USED
(void) pthread_mutex_init(&LOCK_slave, MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_server_id, MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_user_conn, MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_rpl_status, MY_MUTEX_INIT_FAST);
(void) pthread_mutex_init(&LOCK_active_mi, MY_MUTEX_INIT_FAST);
(void) pthread_cond_init(&COND_thread_count,NULL);
(void) pthread_cond_init(&COND_refresh,NULL);
(void) pthread_cond_init(&COND_thread_cache,NULL);
(void) pthread_cond_init(&COND_flush_thread_cache,NULL);
(void) pthread_cond_init(&COND_manager,NULL);
(void) pthread_cond_init(&COND_binlog_update, NULL);
(void) pthread_cond_init(&COND_slave_stopped, NULL);
(void) pthread_cond_init(&COND_slave_start, NULL);
(void) pthread_cond_init(&COND_rpl_status, NULL);
init_signals();
......@@ -1826,18 +1828,7 @@ int main(int argc, char **argv)
using_update_log=1;
}
/*
make sure slave thread gets started if server_id is set,
valid master.info is present, and master_host has not been specified
*/
if (server_id && !master_host)
{
char fname[FN_REFLEN+128];
MY_STAT stat_area;
fn_format(fname, master_info_file, mysql_data_home, "", 4+16+32);
if (my_stat(fname, &stat_area, MYF(0)) && !init_master_info(&glob_mi))
master_host = glob_mi.host;
}
init_slave();
if (opt_bin_log && !server_id)
{
......@@ -1991,17 +1982,6 @@ The server will not act as a slave.");
sql_print_error("Warning: Can't create thread to manage maintenance");
}
// slave thread
if (master_host)
{
pthread_t hThread;
if (!opt_skip_slave_start &&
pthread_create(&hThread, &connection_attrib, handle_slave, 0))
sql_print_error("Warning: Can't create thread to handle slave");
else if(opt_skip_slave_start)
init_master_info(&glob_mi);
}
printf(ER(ER_READY),my_progname,server_version,"");
fflush(stdout);
......@@ -2665,7 +2645,8 @@ enum options {
OPT_REPORT_USER, OPT_REPORT_PASSWORD, OPT_REPORT_PORT,
OPT_SHOW_SLAVE_AUTH_INFO, OPT_OLD_RPL_COMPAT,
OPT_SLAVE_LOAD_TMPDIR, OPT_NO_MIX_TYPE,
OPT_RPL_RECOVERY_RANK,OPT_INIT_RPL_ROLE
OPT_RPL_RECOVERY_RANK,OPT_INIT_RPL_ROLE,
OPT_RELAY_LOG, OPT_RELAY_LOG_INDEX, OPT_RELAY_LOG_INFO_FILE
};
static struct option long_options[] = {
......@@ -2790,6 +2771,8 @@ static struct option long_options[] = {
{"report-password", required_argument, 0, (int) OPT_REPORT_PASSWORD},
{"report-port", required_argument, 0, (int) OPT_REPORT_PORT},
{"rpl-recovery-rank", required_argument, 0, (int) OPT_RPL_RECOVERY_RANK},
{"relay-log", required_argument, 0, (int) OPT_RELAY_LOG},
{"relay-log-index", required_argument, 0, (int) OPT_RELAY_LOG_INDEX},
{"safe-mode", no_argument, 0, (int) OPT_SAFE},
{"safe-show-database", no_argument, 0, (int) OPT_SAFE_SHOW_DB},
{"safe-user-create", no_argument, 0, (int) OPT_SAFE_USER_CREATE},
......@@ -2813,6 +2796,8 @@ static struct option long_options[] = {
{"skip-stack-trace", no_argument, 0, (int) OPT_SKIP_STACK_TRACE},
{"skip-symlink", no_argument, 0, (int) OPT_SKIP_SYMLINKS},
{"skip-thread-priority", no_argument, 0, (int) OPT_SKIP_PRIOR},
{"relay-log-info-file", required_argument, 0,
(int) OPT_RELAY_LOG_INFO_FILE},
{"slave-load-tmpdir", required_argument, 0, (int) OPT_SLAVE_LOAD_TMPDIR},
{"socket", required_argument, 0, (int) OPT_SOCKET},
{"sql-bin-update-same", no_argument, 0, (int) OPT_SQL_BIN_UPDATE_SAME},
......@@ -3151,8 +3136,8 @@ struct show_var_st status_vars[]= {
{"Select_range", (char*) &select_range_count, SHOW_LONG},
{"Select_range_check", (char*) &select_range_check_count, SHOW_LONG},
{"Select_scan", (char*) &select_scan_count, SHOW_LONG},
{"Slave_running", (char*) &slave_running, SHOW_BOOL},
{"Slave_open_temp_tables", (char*) &slave_open_temp_tables, SHOW_LONG},
{"Slave_running", (char*) 0, SHOW_SLAVE_RUNNING},
{"Slow_launch_threads", (char*) &slow_launch_threads, SHOW_LONG},
{"Slow_queries", (char*) &long_query_count, SHOW_LONG},
{"Sort_merge_passes", (char*) &filesort_merge_passes, SHOW_LONG},
......@@ -3548,6 +3533,14 @@ static void get_options(int argc,char **argv)
opt_update_log=1;
opt_update_logname=optarg; // Use hostname.# if null
break;
case (int) OPT_RELAY_LOG_INDEX:
opt_relaylog_index_name = optarg;
break;
case (int) OPT_RELAY_LOG:
x_free(opt_relay_logname);
if (optarg && optarg[0])
opt_relay_logname=my_strdup(optarg,MYF(0));
break;
case (int) OPT_BIN_LOG_INDEX:
opt_binlog_index_name = optarg;
break;
......@@ -4007,6 +4000,9 @@ static void get_options(int argc,char **argv)
case OPT_MASTER_INFO_FILE:
master_info_file=optarg;
break;
case OPT_RELAY_LOG_INFO_FILE:
relay_log_info_file=optarg;
break;
case OPT_MASTER_PORT:
master_port= atoi(optarg);
break;
......
sql/repl_failsafe.cc
View file @ 6291b7b5
......@@ -199,7 +199,7 @@ void end_slave_list()
static int find_target_pos(LEX_MASTER_INFO* mi, IO_CACHE* log, char* errmsg)
{
uint32 log_seq = mi->last_log_seq;
uint32 log_pos = mi->pos;
uint32 target_server_id = mi->server_id;
for (;;)
......@@ -217,7 +217,7 @@ static int find_target_pos(LEX_MASTER_INFO* mi, IO_CACHE* log, char* errmsg)
return 1;
}
if (ev->log_seq == log_seq && ev->server_id == target_server_id)
if (ev->log_pos == log_pos && ev->server_id == target_server_id)
{
delete ev;
mi->pos = my_b_tell(log);
......@@ -527,7 +527,7 @@ pthread_handler_decl(handle_failsafe_rpl,arg)
const char* msg = thd->enter_cond(&COND_rpl_status,
&LOCK_rpl_status, "Waiting for request");
pthread_cond_wait(&COND_rpl_status, &LOCK_rpl_status);
thd->proc_info="Processling request";
thd->proc_info="Processing request";
while (!break_req_chain)
{
switch (rpl_status)
......@@ -630,10 +630,9 @@ static inline void cleanup_mysql_results(MYSQL_RES* db_res,
static inline int fetch_db_tables(THD* thd, MYSQL* mysql, const char* db,
MYSQL_RES* table_res)
MYSQL_RES* table_res, MASTER_INFO* mi)
{
MYSQL_ROW row;
for( row = mc_mysql_fetch_row(table_res); row;
row = mc_mysql_fetch_row(table_res))
{
......@@ -649,11 +648,9 @@ static inline int fetch_db_tables(THD* thd, MYSQL* mysql, const char* db,
if (!tables_ok(thd, &table))
continue;
}
if ((error = fetch_nx_table(thd, db, table_name, &glob_mi, mysql)))
if ((error = fetch_master_table(thd, db, table_name, mi, mysql)))
return error;
}
return 0;
}
......@@ -664,25 +661,26 @@ int load_master_data(THD* thd)
MYSQL_RES* master_status_res = 0;
bool slave_was_running = 0;
int error = 0;
const char* errmsg=0;
int restart_thread_mask;
mc_mysql_init(&mysql);
// we do not want anyone messing with the slave at all for the entire
// duration of the data load;
pthread_mutex_lock(&LOCK_slave);
// first, kill the slave
if ((slave_was_running = slave_running))
{
abort_slave = 1;
KICK_SLAVE;
thd->proc_info = "waiting for slave to die";
while (slave_running)
pthread_cond_wait(&COND_slave_stopped, &LOCK_slave); // wait until done
LOCK_ACTIVE_MI;
lock_slave_threads(active_mi);
init_thread_mask(&restart_thread_mask,active_mi,0 /*not inverse*/);
if (restart_thread_mask &&
(error=terminate_slave_threads(active_mi,restart_thread_mask,
1 /*skip lock*/)))
{
send_error(&thd->net,error);
unlock_slave_threads(active_mi);
UNLOCK_ACTIVE_MI;
return 1;
}
if (connect_to_master(thd, &mysql, &glob_mi))
if (connect_to_master(thd, &mysql, active_mi))
{
net_printf(&thd->net, error = ER_CONNECT_TO_MASTER,
mc_mysql_error(&mysql));
......@@ -744,7 +742,7 @@ int load_master_data(THD* thd)
mess up and not exclude mysql database with the rules when
he actually means to - in this case, he is up for a surprise if
his priv tables get dropped and downloaded from master
TO DO - add special option, not enabled
TODO - add special option, not enabled
by default, to allow inclusion of mysql database into load
data from master
*/
......@@ -774,7 +772,7 @@ int load_master_data(THD* thd)
goto err;
}
if ((error = fetch_db_tables(thd, &mysql, db, *cur_table_res)))
if ((error = fetch_db_tables(thd,&mysql,db,*cur_table_res,active_mi)))
{
// we do not report the error - fetch_db_tables handles it
cleanup_mysql_results(db_res, cur_table_res, table_res);
......@@ -797,14 +795,15 @@ int load_master_data(THD* thd)
*/
if (row[0] && row[1])
{
strmake(glob_mi.log_file_name, row[0], sizeof(glob_mi.log_file_name));
glob_mi.pos = atoi(row[1]); // atoi() is ok, since offset is <= 1GB
if (glob_mi.pos < 4)
glob_mi.pos = 4; // don't hit the magic number
glob_mi.pending = 0;
flush_master_info(&glob_mi);
strmake(active_mi->master_log_name, row[0],
sizeof(active_mi->master_log_name));
// atoi() is ok, since offset is <= 1GB
active_mi->master_log_pos = atoi(row[1]);
if (active_mi->master_log_pos < 4)
active_mi->master_log_pos = 4; // don't hit the magic number
active_mi->rli.pending = 0;
flush_master_info(active_mi);
}
mc_mysql_free_result(master_status_res);
}
......@@ -815,11 +814,35 @@ int load_master_data(THD* thd)
goto err;
}
}
thd->proc_info="purging old relay logs";
if (purge_relay_logs(&active_mi->rli,0 /* not only reset, but also reinit*/,
&errmsg))
{
send_error(&thd->net, 0, "Failed purging old relay logs");
unlock_slave_threads(active_mi);
UNLOCK_ACTIVE_MI;
return 1;
}
pthread_mutex_lock(&active_mi->rli.data_lock);
active_mi->rli.master_log_pos = active_mi->master_log_pos;
strnmov(active_mi->rli.master_log_name,active_mi->master_log_name,
sizeof(active_mi->rli.master_log_name));
pthread_cond_broadcast(&active_mi->rli.data_cond);
pthread_mutex_unlock(&active_mi->rli.data_lock);
thd->proc_info = "starting slave";
if (restart_thread_mask)
{
error=start_slave_threads(0 /* mutex not needed*/,
1 /* wait for start*/,
active_mi,master_info_file,relay_log_info_file,
restart_thread_mask);
}
err:
pthread_mutex_unlock(&LOCK_slave);
if (slave_was_running)
start_slave(0, 0);
unlock_slave_threads(active_mi);
UNLOCK_ACTIVE_MI;
thd->proc_info = 0;
mc_mysql_close(&mysql); // safe to call since we always do mc_mysql_init()
if (!error)
send_ok(&thd->net);
......
sql/slave.cc
View file @ 6291b7b5
......@@ -24,24 +24,23 @@
#include "repl_failsafe.h"
#include <thr_alarm.h>
#include <my_dir.h>
#include <assert.h>
volatile bool slave_running = 0;
volatile bool slave_sql_running = 0, slave_io_running = 0;
char* slave_load_tmpdir = 0;
pthread_t slave_real_id;
MASTER_INFO glob_mi;
MASTER_INFO main_mi;
MASTER_INFO* active_mi;
volatile int active_mi_in_use = 0;
HASH replicate_do_table, replicate_ignore_table;
DYNAMIC_ARRAY replicate_wild_do_table, replicate_wild_ignore_table;
bool do_table_inited = 0, ignore_table_inited = 0;
bool wild_do_table_inited = 0, wild_ignore_table_inited = 0;
bool table_rules_on = 0;
uint32 slave_skip_counter = 0;
static TABLE* save_temporary_tables = 0;
THD* slave_thd = 0;
// when slave thread exits, we need to remember the temporary tables so we
// can re-use them on slave start
int last_slave_errno = 0;
char last_slave_error[MAX_SLAVE_ERRMSG] = "";
// TODO: move the vars below under MASTER_INFO
#ifndef DBUG_OFF
int disconnect_slave_event_count = 0, abort_slave_event_count = 0;
static int events_till_disconnect = -1;
......@@ -49,15 +48,17 @@ int events_till_abort = -1;
static int stuck_count = 0;
#endif
typedef enum { SLAVE_THD_IO, SLAVE_THD_SQL} SLAVE_THD_TYPE;
void skip_load_data_infile(NET* net);
inline bool slave_killed(THD* thd);
static int init_slave_thread(THD* thd);
static inline bool slave_killed(THD* thd,MASTER_INFO* mi);
static inline bool slave_killed(THD* thd,RELAY_LOG_INFO* rli);
static int init_slave_thread(THD* thd, SLAVE_THD_TYPE thd_type);
static int safe_connect(THD* thd, MYSQL* mysql, MASTER_INFO* mi);
static int safe_reconnect(THD* thd, MYSQL* mysql, MASTER_INFO* mi);
static int connect_to_master(THD* thd, MYSQL* mysql, MASTER_INFO* mi,
bool reconnect);
static int safe_sleep(THD* thd, int sec);
static int safe_sleep(THD* thd, MASTER_INFO* mi, int sec);
static int request_table_dump(MYSQL* mysql, const char* db, const char* table);
static int create_table_from_dump(THD* thd, NET* net, const char* db,
const char* table_name);
......@@ -65,6 +66,79 @@ static int check_master_version(MYSQL* mysql, MASTER_INFO* mi);
char* rewrite_db(char* db);
void init_thread_mask(int* mask,MASTER_INFO* mi,bool inverse)
{
bool set_io = mi->slave_running, set_sql = mi->rli.slave_running;
if (inverse)
{
/* This makes me think of the Russian idiom "I am not I, and this is
not my horse", which is used to deny reponsibility for
one's actions.
*/
set_io = !set_io;
set_sql = !set_sql;
}
register int tmp_mask=0;
if (set_io)
tmp_mask |= SLAVE_IO;
if (set_sql)
tmp_mask |= SLAVE_SQL;
*mask = tmp_mask;
}
void lock_slave_threads(MASTER_INFO* mi)
{
//TODO: see if we can do this without dual mutex
pthread_mutex_lock(&mi->run_lock);
pthread_mutex_lock(&mi->rli.run_lock);
}
void unlock_slave_threads(MASTER_INFO* mi)
{
//TODO: see if we can do this without dual mutex
pthread_mutex_unlock(&mi->rli.run_lock);
pthread_mutex_unlock(&mi->run_lock);
}
int init_slave()
{
// TODO (multi-master): replace this with list initialization
active_mi = &main_mi;
// TODO: the code below is a copy-paste mess - clean it up
/*
make sure slave thread gets started if server_id is set,
valid master.info is present, and master_host has not been specified
*/
if (server_id && !master_host)
{
// TODO: re-write this to interate through the list of files
// for multi-master
char fname[FN_REFLEN+128];
MY_STAT stat_area;
fn_format(fname, master_info_file, mysql_data_home, "", 4+16+32);
if (my_stat(fname, &stat_area, MYF(0)) &&
!init_master_info(active_mi,master_info_file,relay_log_info_file))
master_host = active_mi->host;
}
// slave thread
if (master_host)
{
if (!opt_skip_slave_start && start_slave_threads(1 /* need mutex */,
0 /* no wait for start*/,
active_mi,
master_info_file,
relay_log_info_file,
SLAVE_IO|SLAVE_SQL
))
sql_print_error("Warning: Can't create threads to handle slave");
else if (opt_skip_slave_start)
if (init_master_info(active_mi, master_info_file, relay_log_info_file))
sql_print_error("Warning: failed to initialized master info");
}
return 0;
}
static void free_table_ent(TABLE_RULE_ENT* e)
{
my_free((gptr) e, MYF(0));
......@@ -77,6 +151,285 @@ static byte* get_table_key(TABLE_RULE_ENT* e, uint* len,
return (byte*)e->db;
}
// TODO: check proper initialization of master_log_name/master_log_pos
int init_relay_log_pos(RELAY_LOG_INFO* rli,const char* log,
ulonglong pos, bool need_data_lock,
const char** errmsg)
{
if (rli->log_pos_current)
return 0;
pthread_mutex_t *log_lock=rli->relay_log.get_log_lock();
pthread_mutex_lock(log_lock);
if (need_data_lock)
pthread_mutex_lock(&rli->data_lock);
if (rli->cur_log_fd >= 0)
{
end_io_cache(&rli->cache_buf);
my_close(rli->cur_log_fd, MYF(MY_WME));
rli->cur_log_fd = -1;
}
if (!log)
log = rli->relay_log_name; // already inited
if (!pos)
pos = rli->relay_log_pos; // already inited
else
rli->relay_log_pos = pos;
if (rli->relay_log.find_first_log(&rli->linfo,log))
{
*errmsg="Could not find first log during relay log initialization";
goto err;
}
strnmov(rli->relay_log_name,rli->linfo.log_file_name,
sizeof(rli->relay_log_name));
// to make end_io_cache(&rli->cache_buf) safe in all cases
if (!rli->inited)
bzero((char*) &rli->cache_buf, sizeof(IO_CACHE));
if (rli->relay_log.is_active(rli->linfo.log_file_name))
{
if (my_b_tell((rli->cur_log=rli->relay_log.get_log_file())) == 0 &&
check_binlog_magic(rli->cur_log,errmsg))
{
goto err;
}
rli->cur_log_init_count=rli->cur_log->init_count;
}
else
{
if (rli->inited)
end_io_cache(&rli->cache_buf);
if (rli->cur_log_fd>=0)
my_close(rli->cur_log_fd,MYF(MY_WME));
if ((rli->cur_log_fd=open_binlog(&rli->cache_buf,
rli->linfo.log_file_name,errmsg)) < 0)
{
goto err;
}
rli->cur_log = &rli->cache_buf;
}
if (pos > 4)
my_b_seek(rli->cur_log,(off_t)pos);
rli->log_pos_current=1;
err:
pthread_cond_broadcast(&rli->data_cond);
if (need_data_lock)
pthread_mutex_unlock(&rli->data_lock);
pthread_mutex_unlock(log_lock);
return (*errmsg) ? 1 : 0;
}
// we assume we have a run lock on rli and that the both slave thread
// are not running
int purge_relay_logs(RELAY_LOG_INFO* rli, bool just_reset, const char** errmsg)
{
if (!rli->inited)
return 0; /* successfully do nothing */
DBUG_ASSERT(rli->slave_running == 0);
DBUG_ASSERT(rli->mi->slave_running == 0);
int error=0;
rli->slave_skip_counter=0;
pthread_mutex_lock(&rli->data_lock);
rli->pending=0;
rli->master_log_name[0]=0;
rli->master_log_pos=0; // 0 means uninitialized
if (rli->relay_log.reset_logs(rli->sql_thd) ||
rli->relay_log.find_first_log(&rli->linfo,""))
{
*errmsg = "Failed during log reset";
error=1;
goto err;
}
strnmov(rli->relay_log_name,rli->linfo.log_file_name,
sizeof(rli->relay_log_name));
rli->relay_log_pos=4;
rli->log_pos_current=0;
if (!just_reset)
error = init_relay_log_pos(rli,0,0,0/*do not need data lock*/,errmsg);
err:
pthread_mutex_unlock(&rli->data_lock);
return error;
}
int terminate_slave_threads(MASTER_INFO* mi,int thread_mask,bool skip_lock)
{
if (!mi->inited)
return 0; /* successfully do nothing */
int error,force_all = (thread_mask & SLAVE_FORCE_ALL);
pthread_mutex_t *sql_lock = &mi->rli.run_lock, *io_lock = &mi->run_lock;
pthread_mutex_t *sql_cond_lock,*io_cond_lock;
sql_cond_lock=sql_lock;
io_cond_lock=io_lock;
if (skip_lock)
{
sql_lock = io_lock = 0;
}
if ((thread_mask & (SLAVE_IO|SLAVE_FORCE_ALL)) && mi->slave_running)
{
mi->abort_slave=1;
if ((error=terminate_slave_thread(mi->io_thd,io_lock,
io_cond_lock,
&mi->stop_cond,
&mi->slave_running)) &&
!force_all)
return error;
}
if ((thread_mask & (SLAVE_SQL|SLAVE_FORCE_ALL)) && mi->rli.slave_running)
{
DBUG_ASSERT(mi->rli.sql_thd != 0) ;
mi->rli.abort_slave=1;
if ((error=terminate_slave_thread(mi->rli.sql_thd,sql_lock,
sql_cond_lock,
&mi->rli.stop_cond,
&mi->rli.slave_running)) &&
!force_all)
return error;
}
return 0;
}
int terminate_slave_thread(THD* thd, pthread_mutex_t* term_lock,
pthread_mutex_t *cond_lock,
pthread_cond_t* term_cond,
volatile bool* slave_running)
{
if (term_lock)
{
pthread_mutex_lock(term_lock);
if (!*slave_running)
{
pthread_mutex_unlock(term_lock);
return ER_SLAVE_NOT_RUNNING;
}
}
DBUG_ASSERT(thd != 0);
KICK_SLAVE(thd);
while (*slave_running)
{
/* there is a small chance that slave thread might miss the first
alarm. To protect againts it, resend the signal until it reacts
*/
struct timespec abstime;
#ifdef HAVE_TIMESPEC_TS_SEC
abstime.ts_sec=time(NULL)+2;
abstime.ts_nsec=0;
#elif defined(__WIN__)
abstime.tv_sec=time((time_t*) 0)+2;
abstime.tv_nsec=0;
#else
struct timeval tv;
gettimeofday(&tv,0);
abstime.tv_sec=tv.tv_sec+2;
abstime.tv_nsec=tv.tv_usec*1000;
#endif
pthread_cond_timedwait(term_cond, cond_lock, &abstime);
if (*slave_running)
KICK_SLAVE(thd);
}
if (term_lock)
pthread_mutex_unlock(term_lock);
return 0;
}
int start_slave_thread(pthread_handler h_func, pthread_mutex_t* start_lock,
pthread_mutex_t *cond_lock,
pthread_cond_t* start_cond,
volatile bool* slave_running,
MASTER_INFO* mi)
{
pthread_t th;
DBUG_ASSERT(mi->inited);
if (start_lock)
pthread_mutex_lock(start_lock);
if (!server_id)
{
if (start_cond)
pthread_cond_broadcast(start_cond);
if (start_lock)
pthread_mutex_unlock(start_lock);
sql_print_error("Server id not set, will not start slave");
return ER_BAD_SLAVE;
}
if (*slave_running)
{
if (start_cond)
pthread_cond_broadcast(start_cond);
if (start_lock)
pthread_mutex_unlock(start_lock);
return ER_SLAVE_MUST_STOP;
}
if (pthread_create(&th, &connection_attrib, h_func, (void*)mi))
{
if (start_lock)
pthread_mutex_unlock(start_lock);
return ER_SLAVE_THREAD;
}
if (start_cond && cond_lock)
{
THD* thd = current_thd;
while (!*slave_running)
{
const char* old_msg = thd->enter_cond(start_cond,cond_lock,
"Waiting for slave thread to start");
pthread_cond_wait(start_cond,cond_lock);
thd->exit_cond(old_msg);
// TODO: in a very rare case of init_slave_thread failing, it is
// possible that we can get stuck here since slave_running will not
// be set. We need to change slave_running to int and have -1 as
// error code
if (thd->killed)
{
pthread_mutex_unlock(cond_lock);
return ER_SERVER_SHUTDOWN;
}
}
}
if (start_lock)
pthread_mutex_unlock(start_lock);
return 0;
}
/* SLAVE_FORCE_ALL is not implemented here on purpose since it does not make
sense to do that for starting a slave - we always care if it actually
started the threads that were not previously running
*/
int start_slave_threads(bool need_slave_mutex, bool wait_for_start,
MASTER_INFO* mi, const char* master_info_fname,
const char* slave_info_fname, int thread_mask)
{
pthread_mutex_t *lock_io=0,*lock_sql=0,*lock_cond_io=0,*lock_cond_sql=0;
pthread_cond_t* cond_io=0,*cond_sql=0;
int error=0;
if (need_slave_mutex)
{
lock_io = &mi->run_lock;
lock_sql = &mi->rli.run_lock;
}
if (wait_for_start)
{
cond_io = &mi->start_cond;
cond_sql = &mi->rli.start_cond;
lock_cond_io = &mi->run_lock;
lock_cond_sql = &mi->rli.run_lock;
}
if (init_master_info(mi,master_info_fname,slave_info_fname))
return ER_MASTER_INFO;
if ((thread_mask & SLAVE_IO) &&
(error=start_slave_thread(handle_slave_io,lock_io,lock_cond_io,
cond_io,&mi->slave_running,
mi)))
return error;
if ((thread_mask & SLAVE_SQL) &&
(error=start_slave_thread(handle_slave_sql,lock_sql,lock_cond_sql,
cond_sql,
&mi->rli.slave_running,mi)))
return error;
return 0;
}
void init_table_rule_hash(HASH* h, bool* h_inited)
{
......@@ -98,11 +451,11 @@ static TABLE_RULE_ENT* find_wild(DYNAMIC_ARRAY *a, const char* key, int len)
uint i;
const char* key_end = key + len;
for(i = 0; i < a->elements; i++)
for (i = 0; i < a->elements; i++)
{
TABLE_RULE_ENT* e ;
get_dynamic(a, (gptr)&e, i);
if(!wild_case_compare(key, key_end, (const char*)e->db,
if (!wild_case_compare(key, key_end, (const char*)e->db,
(const char*)(e->db + e->key_len),'\\'))
return e;
}
......@@ -126,7 +479,7 @@ int tables_ok(THD* thd, TABLE_LIST* tables)
if (hash_search(&replicate_do_table, (byte*) hash_key, len))
return 1;
}
if (ignore_table_inited) // if there are any do's
if (ignore_table_inited) // if there are any ignores
{
if (hash_search(&replicate_ignore_table, (byte*) hash_key, len))
return 0;
......@@ -191,44 +544,52 @@ static void free_string_array(DYNAMIC_ARRAY *a)
delete_dynamic(a);
}
void end_slave()
static int end_slave_on_walk(MASTER_INFO* mi, gptr /*unused*/)
{
pthread_mutex_lock(&LOCK_slave);
if (slave_running)
{
abort_slave = 1;
thr_alarm_kill(slave_real_id);
#ifdef SIGNAL_WITH_VIO_CLOSE
slave_thd->close_active_vio();
#endif
while (slave_running)
pthread_cond_wait(&COND_slave_stopped, &LOCK_slave);
}
pthread_mutex_unlock(&LOCK_slave);
end_master_info(mi);
return 0;
}
end_master_info(&glob_mi);
if(do_table_inited)
void end_slave()
{
// TODO: replace the line below with
// list_walk(&master_list, (list_walk_action)end_slave_on_walk,0);
// once multi-master code is ready
terminate_slave_threads(active_mi,SLAVE_FORCE_ALL);
end_master_info(active_mi);
if (do_table_inited)
hash_free(&replicate_do_table);
if(ignore_table_inited)
if (ignore_table_inited)
hash_free(&replicate_ignore_table);
if(wild_do_table_inited)
if (wild_do_table_inited)
free_string_array(&replicate_wild_do_table);
if(wild_ignore_table_inited)
if (wild_ignore_table_inited)
free_string_array(&replicate_wild_ignore_table);
}
inline bool slave_killed(THD* thd)
static inline bool slave_killed(THD* thd, MASTER_INFO* mi)
{
DBUG_ASSERT(mi->io_thd == thd);
DBUG_ASSERT(mi->slave_running == 1); // tracking buffer overrun
return mi->abort_slave || abort_loop || thd->killed;
}
static inline bool slave_killed(THD* thd, RELAY_LOG_INFO* rli)
{
return abort_slave || abort_loop || thd->killed;
DBUG_ASSERT(rli->sql_thd == thd);
DBUG_ASSERT(rli->slave_running == 1);// tracking buffer overrun
return rli->abort_slave || abort_loop || thd->killed;
}
void slave_print_error(int err_code, const char* msg, ...)
void slave_print_error(RELAY_LOG_INFO* rli, int err_code, const char* msg, ...)
{
va_list args;
va_start(args,msg);
my_vsnprintf(last_slave_error, sizeof(last_slave_error), msg, args);
sql_print_error("Slave: %s, error_code=%d", last_slave_error, err_code);
last_slave_errno = err_code;
my_vsnprintf(rli->last_slave_error,
sizeof(rli->last_slave_error), msg, args);
sql_print_error("Slave: %s, error_code=%d", rli->last_slave_error,
err_code);
rli->last_slave_errno = err_code;
}
void skip_load_data_infile(NET* net)
......@@ -476,16 +837,16 @@ static int create_table_from_dump(THD* thd, NET* net, const char* db,
return error;
}
int fetch_nx_table(THD* thd, const char* db_name, const char* table_name,
int fetch_master_table(THD* thd, const char* db_name, const char* table_name,
MASTER_INFO* mi, MYSQL* mysql)
{
int error = 1;
int nx_errno = 0;
int fetch_errno = 0;
bool called_connected = (mysql != NULL);
if (!called_connected && !(mysql = mc_mysql_init(NULL)))
{
sql_print_error("fetch_nx_table: Error in mysql_init()");
nx_errno = ER_GET_ERRNO;
sql_print_error("fetch_master_table: Error in mysql_init()");
fetch_errno = ER_GET_ERRNO;
goto err;
}
......@@ -495,17 +856,17 @@ int fetch_nx_table(THD* thd, const char* db_name, const char* table_name,
{
sql_print_error("Could not connect to master while fetching table\
'%-64s.%-64s'", db_name, table_name);
nx_errno = ER_CONNECT_TO_MASTER;
fetch_errno = ER_CONNECT_TO_MASTER;
goto err;
}
}
if (slave_killed(thd))
if (thd->killed)
goto err;
if (request_table_dump(mysql, db_name, table_name))
{
nx_errno = ER_GET_ERRNO;
sql_print_error("fetch_nx_table: failed on table dump request ");
fetch_errno = ER_GET_ERRNO;
sql_print_error("fetch_master_table: failed on table dump request ");
goto err;
}
......@@ -513,24 +874,25 @@ int fetch_nx_table(THD* thd, const char* db_name, const char* table_name,
table_name))
{
// create_table_from_dump will have sent the error alread
sql_print_error("fetch_nx_table: failed on create table ");
sql_print_error("fetch_master_table: failed on create table ");
goto err;
}
error = 0;
err:
if (mysql && !called_connected)
mc_mysql_close(mysql);
if (nx_errno && thd->net.vio)
send_error(&thd->net, nx_errno, "Error in fetch_nx_table");
if (fetch_errno && thd->net.vio)
send_error(&thd->net, fetch_errno, "Error in fetch_master_table");
thd->net.no_send_ok = 0; // Clear up garbage after create_table_from_dump
return error;
}
void end_master_info(MASTER_INFO* mi)
{
if(mi->fd >= 0)
if (!mi->inited)
return;
end_relay_log_info(&mi->rli);
if (mi->fd >= 0)
{
end_io_cache(&mi->file);
(void)my_close(mi->fd, MYF(MY_WME));
......@@ -539,21 +901,136 @@ void end_master_info(MASTER_INFO* mi)
mi->inited = 0;
}
int init_master_info(MASTER_INFO* mi)
int init_relay_log_info(RELAY_LOG_INFO* rli, const char* info_fname)
{
if (rli->inited)
return 0;
MY_STAT stat_area;
char fname[FN_REFLEN+128];
int info_fd;
const char* msg = 0;
int error = 0;
fn_format(fname, info_fname,
mysql_data_home, "", 4+32);
pthread_mutex_lock(&rli->data_lock);
info_fd = rli->info_fd;
rli->pending = 0;
rli->cur_log_fd = -1;
rli->slave_skip_counter=0;
rli->log_pos_current=0;
// TODO: make this work with multi-master
if (!opt_relay_logname)
{
char tmp[FN_REFLEN];
/* TODO: The following should be using fn_format(); We just need to
first change fn_format() to cut the file name if it's too long.
*/
strmake(tmp,glob_hostname,FN_REFLEN-5);
strmov(strcend(tmp,'.'),"-relay-bin");
opt_relay_logname=my_strdup(tmp,MYF(MY_WME));
}
rli->relay_log.set_index_file_name(opt_relaylog_index_name);
open_log(&rli->relay_log, glob_hostname, opt_relay_logname, "-relay-bin",
LOG_BIN, 1 /* read_append cache */,
1 /* no auto events*/);
/* if file does not exist */
if (!my_stat(fname, &stat_area, MYF(0)))
{
// if someone removed the file from underneath our feet, just close
// the old descriptor and re-create the old file
if (info_fd >= 0)
my_close(info_fd, MYF(MY_WME));
if ((info_fd = my_open(fname, O_CREAT|O_RDWR|O_BINARY, MYF(MY_WME))) < 0
|| init_io_cache(&rli->info_file, info_fd, IO_SIZE*2, READ_CACHE, 0L,0,
MYF(MY_WME)))
{
if(info_fd >= 0)
my_close(info_fd, MYF(0));
rli->info_fd=-1;
pthread_mutex_unlock(&rli->data_lock);
return 1;
}
if (init_relay_log_pos(rli,"",4,0/*no data mutex*/,&msg))
goto err;
rli->master_log_pos = 0; // uninitialized
rli->info_fd = info_fd;
}
else // file exists
{
if(info_fd >= 0)
reinit_io_cache(&rli->info_file, READ_CACHE, 0L,0,0);
else if((info_fd = my_open(fname, O_RDWR|O_BINARY, MYF(MY_WME))) < 0
|| init_io_cache(&rli->info_file, info_fd,
IO_SIZE*2, READ_CACHE, 0L,
0, MYF(MY_WME)))
{
if (info_fd >= 0)
my_close(info_fd, MYF(0));
rli->info_fd=-1;
pthread_mutex_unlock(&rli->data_lock);
return 1;
}
rli->info_fd = info_fd;
if (init_strvar_from_file(rli->relay_log_name,
sizeof(rli->relay_log_name), &rli->info_file,
(char*)"") ||
init_intvar_from_file((int*)&rli->relay_log_pos,
&rli->info_file, 4) ||
init_strvar_from_file(rli->master_log_name,
sizeof(rli->master_log_name), &rli->info_file,
(char*)"") ||
init_intvar_from_file((int*)&rli->master_log_pos,
&rli->info_file, 0))
{
msg="Error reading slave log configuration";
goto err;
}
if (init_relay_log_pos(rli,0 /*log already inited*/,
0 /*pos already inited*/,
0 /* no data lock*/,
&msg))
goto err;
}
DBUG_ASSERT(rli->relay_log_pos >= 4);
DBUG_ASSERT(my_b_tell(rli->cur_log) == rli->relay_log_pos);
rli->inited = 1;
// now change the cache from READ to WRITE - must do this
// before flush_relay_log_info
reinit_io_cache(&rli->info_file, WRITE_CACHE,0L,0,1);
error=test(flush_relay_log_info(rli));
pthread_mutex_unlock(&rli->data_lock);
return error;
err:
sql_print_error(msg);
end_io_cache(&rli->info_file);
my_close(info_fd, MYF(0));
rli->info_fd=-1;
pthread_mutex_unlock(&rli->data_lock);
return 1;
}
int init_master_info(MASTER_INFO* mi, const char* master_info_fname,
const char* slave_info_fname)
{
if (mi->inited)
return 0;
if (init_relay_log_info(&mi->rli, slave_info_fname))
return 1;
mi->rli.mi = mi;
int fd,length,error;
MY_STAT stat_area;
char fname[FN_REFLEN+128];
const char *msg;
fn_format(fname, master_info_file, mysql_data_home, "", 4+32);
fn_format(fname, master_info_fname, mysql_data_home, "", 4+32);
// we need a mutex while we are changing master info parameters to
// keep other threads from reading bogus info
pthread_mutex_lock(&mi->lock);
mi->pending = 0;
pthread_mutex_lock(&mi->data_lock);
fd = mi->fd;
// we do not want any messages if the file does not exist
......@@ -569,11 +1046,13 @@ int init_master_info(MASTER_INFO* mi)
{
if(fd >= 0)
my_close(fd, MYF(0));
pthread_mutex_unlock(&mi->lock);
mi->fd=-1;
end_relay_log_info(&mi->rli);
pthread_mutex_unlock(&mi->data_lock);
return 1;
}
mi->log_file_name[0] = 0;
mi->pos = 4; // skip magic number
mi->master_log_name[0] = 0;
mi->master_log_pos = 4; // skip magic number
mi->fd = fd;
if (master_host)
......@@ -595,28 +1074,19 @@ int init_master_info(MASTER_INFO* mi)
{
if(fd >= 0)
my_close(fd, MYF(0));
pthread_mutex_unlock(&mi->lock);
mi->fd=-1;
end_relay_log_info(&mi->rli);
pthread_mutex_unlock(&mi->data_lock);
return 1;
}
if ((length=my_b_gets(&mi->file, mi->log_file_name,
sizeof(mi->log_file_name))) < 1)
{
msg="Error reading log file name from master info file ";
goto error;
}
mi->log_file_name[length-1]= 0; // kill \n
/* Reuse fname buffer */
if(!my_b_gets(&mi->file, fname, sizeof(fname)))
{
msg="Error reading log file position from master info file";
goto error;
}
mi->pos = strtoull(fname,(char**) 0, 10);
mi->fd = fd;
if(init_strvar_from_file(mi->host, sizeof(mi->host), &mi->file,
if (init_strvar_from_file(mi->master_log_name,
sizeof(mi->master_log_name), &mi->file,
(char*)"") ||
init_intvar_from_file((int*)&mi->master_log_pos, &mi->file, 4)
||
init_strvar_from_file(mi->host, sizeof(mi->host), &mi->file,
master_host) ||
init_strvar_from_file(mi->user, sizeof(mi->user), &mi->file,
master_user) ||
......@@ -624,12 +1094,11 @@ int init_master_info(MASTER_INFO* mi)
master_password) ||
init_intvar_from_file((int*)&mi->port, &mi->file, master_port) ||
init_intvar_from_file((int*)&mi->connect_retry, &mi->file,
master_connect_retry) ||
init_intvar_from_file((int*)&mi->last_log_seq, &mi->file, 0)
master_connect_retry)
)
{
msg="Error reading master configuration";
goto error;
goto err;
}
}
......@@ -638,14 +1107,17 @@ int init_master_info(MASTER_INFO* mi)
// before flush_master_info
reinit_io_cache(&mi->file, WRITE_CACHE,0L,0,1);
error=test(flush_master_info(mi));
pthread_mutex_unlock(&mi->lock);
pthread_mutex_unlock(&mi->data_lock);
return error;
error:
err:
sql_print_error(msg);
end_io_cache(&mi->file);
end_relay_log_info(&mi->rli);
DBUG_ASSERT(fd>=0);
my_close(fd, MYF(0));
pthread_mutex_unlock(&mi->lock);
mi->fd=-1;
pthread_mutex_unlock(&mi->data_lock);
return 1;
}
......@@ -654,14 +1126,14 @@ int register_slave_on_master(MYSQL* mysql)
String packet;
char buf[4];
if(!report_host)
if (!report_host)
return 0;
int4store(buf, server_id);
packet.append(buf, 4);
net_store_data(&packet, report_host);
if(report_user)
if (report_user)
net_store_data(&packet, report_user);
else
packet.append((char)0);
......@@ -678,7 +1150,7 @@ int register_slave_on_master(MYSQL* mysql)
int4store(buf, 0); /* tell the master will fill in master_id */
packet.append(buf, 4);
if(mc_simple_command(mysql, COM_REGISTER_SLAVE, (char*)packet.ptr(),
if (mc_simple_command(mysql, COM_REGISTER_SLAVE, (char*)packet.ptr(),
packet.length(), 0))
{
sql_print_error("Error on COM_REGISTER_SLAVE: '%s'",
......@@ -689,52 +1161,61 @@ int register_slave_on_master(MYSQL* mysql)
return 0;
}
int show_master_info(THD* thd)
int show_master_info(THD* thd, MASTER_INFO* mi)
{
// TODO: fix this for multi-master
DBUG_ENTER("show_master_info");
List<Item> field_list;
field_list.push_back(new Item_empty_string("Master_Host",
sizeof(glob_mi.host)));
sizeof(mi->host)));
field_list.push_back(new Item_empty_string("Master_User",
sizeof(glob_mi.user)));
sizeof(mi->user)));
field_list.push_back(new Item_empty_string("Master_Port", 6));
field_list.push_back(new Item_empty_string("Connect_retry", 6));
field_list.push_back( new Item_empty_string("Log_File",
field_list.push_back(new Item_empty_string("Master_Log_File",
FN_REFLEN));
field_list.push_back(new Item_empty_string("Read_Master_Log_Pos", 12));
field_list.push_back(new Item_empty_string("Relay_Log_File",
FN_REFLEN));
field_list.push_back(new Item_empty_string("Relay_Log_Pos", 12));
field_list.push_back(new Item_empty_string("Relay_Master_Log_File",
FN_REFLEN));
field_list.push_back(new Item_empty_string("Pos", 12));
field_list.push_back(new Item_empty_string("Slave_Running", 3));
field_list.push_back(new Item_empty_string("Slave_IO_Running", 3));
field_list.push_back(new Item_empty_string("Slave_SQL_Running", 3));
field_list.push_back(new Item_empty_string("Replicate_do_db", 20));
field_list.push_back(new Item_empty_string("Replicate_ignore_db", 20));
field_list.push_back(new Item_empty_string("Last_errno", 4));
field_list.push_back(new Item_empty_string("Last_error", 20));
field_list.push_back(new Item_empty_string("Skip_counter", 12));
field_list.push_back(new Item_empty_string("Last_log_seq", 12));
field_list.push_back(new Item_empty_string("Exec_master_log_pos", 12));
if(send_fields(thd, field_list, 1))
DBUG_RETURN(-1);
String* packet = &thd->packet;
uint32 last_log_seq;
packet->length(0);
pthread_mutex_lock(&glob_mi.lock);
net_store_data(packet, glob_mi.host);
net_store_data(packet, glob_mi.user);
net_store_data(packet, (uint32) glob_mi.port);
net_store_data(packet, (uint32) glob_mi.connect_retry);
net_store_data(packet, glob_mi.log_file_name);
net_store_data(packet, (longlong) glob_mi.pos);
last_log_seq = glob_mi.last_log_seq;
pthread_mutex_unlock(&glob_mi.lock);
pthread_mutex_lock(&LOCK_slave); // QQ; This is not needed
net_store_data(packet, slave_running ? "Yes":"No");
pthread_mutex_unlock(&LOCK_slave); // QQ; This is not needed
pthread_mutex_lock(&mi->data_lock);
pthread_mutex_lock(&mi->rli.data_lock);
net_store_data(packet, mi->host);
net_store_data(packet, mi->user);
net_store_data(packet, (uint32) mi->port);
net_store_data(packet, (uint32) mi->connect_retry);
net_store_data(packet, mi->master_log_name);
net_store_data(packet, (longlong) mi->master_log_pos);
net_store_data(packet, mi->rli.relay_log_name +
dirname_length(mi->rli.relay_log_name));
net_store_data(packet, (longlong) mi->rli.relay_log_pos);
net_store_data(packet, mi->rli.master_log_name);
net_store_data(packet, mi->slave_running ? "Yes":"No");
net_store_data(packet, mi->rli.slave_running ? "Yes":"No");
net_store_data(packet, &replicate_do_db);
net_store_data(packet, &replicate_ignore_db);
net_store_data(packet, (uint32)last_slave_errno);
net_store_data(packet, last_slave_error);
net_store_data(packet, slave_skip_counter);
net_store_data(packet, last_log_seq);
net_store_data(packet, (uint32)mi->rli.last_slave_errno);
net_store_data(packet, mi->rli.last_slave_error);
net_store_data(packet, mi->rli.slave_skip_counter);
net_store_data(packet, (longlong)mi->rli.master_log_pos);
pthread_mutex_unlock(&mi->rli.data_lock);
pthread_mutex_unlock(&mi->data_lock);
if (my_net_write(&thd->net, (char*)thd->packet.ptr(), packet->length()))
DBUG_RETURN(-1);
......@@ -747,58 +1228,64 @@ int flush_master_info(MASTER_INFO* mi)
{
IO_CACHE* file = &mi->file;
char lbuf[22];
char lbuf1[22];
my_b_seek(file, 0L);
my_b_printf(file, "%s\n%s\n%s\n%s\n%s\n%d\n%d\n%d\n",
mi->log_file_name, llstr(mi->pos, lbuf), mi->host, mi->user,
mi->password, mi->port, mi->connect_retry,
llstr(mi->last_log_seq, lbuf1));
mi->master_log_name, llstr(mi->master_log_pos, lbuf),
mi->host, mi->user,
mi->password, mi->port, mi->connect_retry
);
flush_io_cache(file);
return 0;
}
int st_master_info::wait_for_pos(THD* thd, String* log_name, ulonglong log_pos)
/* TODO: the code below needs to be re-written almost from scratch
Main issue is how to find out if we have reached a certain position
in the master log my knowing the offset in the relay log.
*/
int st_relay_log_info::wait_for_pos(THD* thd, String* log_name,
ulonglong log_pos)
{
if (!inited) return -1;
bool pos_reached;
bool pos_reached = 0;
int event_count = 0;
pthread_mutex_lock(&lock);
while(!thd->killed)
pthread_mutex_lock(&data_lock);
while (!thd->killed)
{
int cmp_result;
if (*log_file_name)
DBUG_ASSERT(*master_log_name || master_log_pos == 0);
if (*master_log_name)
{
/*
We should use dirname_length() here when we have a version of
this that doesn't modify the argument */
char *basename = strrchr(log_file_name, FN_LIBCHAR);
char *basename = strrchr(master_log_name, FN_LIBCHAR);
if (basename)
++basename;
else
basename = log_file_name;
basename = master_log_name;
cmp_result = strncmp(basename, log_name->ptr(),
log_name->length());
}
else
cmp_result = 0;
pos_reached = ((!cmp_result && pos >= log_pos) || cmp_result > 0);
pos_reached = ((!cmp_result && master_log_pos >= log_pos) ||
cmp_result > 0);
if (pos_reached || thd->killed)
break;
const char* msg = thd->enter_cond(&cond, &lock,
const char* msg = thd->enter_cond(&data_cond, &data_lock,
"Waiting for master update");
pthread_cond_wait(&cond, &lock);
pthread_cond_wait(&data_cond, &data_lock);
thd->exit_cond(msg);
event_count++;
}
pthread_mutex_unlock(&lock);
pthread_mutex_unlock(&data_lock);
return thd->killed ? -1 : event_count;
}
static int init_slave_thread(THD* thd)
static int init_slave_thread(THD* thd, SLAVE_THD_TYPE thd_type)
{
DBUG_ENTER("init_slave_thread");
thd->system_thread = thd->bootstrap = 1;
......@@ -812,7 +1299,7 @@ static int init_slave_thread(THD* thd)
thd->options = (((opt_log_slave_updates) ? OPTION_BIN_LOG:0) | OPTION_AUTO_IS_NULL) ;
thd->system_thread = 1;
thd->client_capabilities = CLIENT_LOCAL_FILES;
slave_real_id=thd->real_id=pthread_self();
thd->real_id=pthread_self();
pthread_mutex_lock(&LOCK_thread_count);
thd->thread_id = thread_id++;
pthread_mutex_unlock(&LOCK_thread_count);
......@@ -822,7 +1309,6 @@ static int init_slave_thread(THD* thd)
my_pthread_setspecific_ptr(THR_MALLOC, &thd->mem_root) ||
my_pthread_setspecific_ptr(THR_NET, &thd->net))
{
close_connection(&thd->net,ER_OUT_OF_RESOURCES); // is this needed?
end_thread(thd,0);
DBUG_RETURN(-1);
}
......@@ -839,14 +1325,21 @@ static int init_slave_thread(THD* thd)
if (thd->max_join_size == (ulong) ~0L)
thd->options |= OPTION_BIG_SELECTS;
if (thd_type == SLAVE_THD_SQL)
{
thd->proc_info = "Waiting for the next event in slave queue";
}
else
{
thd->proc_info="Waiting for master update";
}
thd->version=refresh_version;
thd->set_time();
DBUG_RETURN(0);
}
static int safe_sleep(THD* thd, int sec)
static int safe_sleep(THD* thd, MASTER_INFO* mi, int sec)
{
thr_alarm_t alarmed;
thr_alarm_init(&alarmed);
......@@ -869,21 +1362,20 @@ static int safe_sleep(THD* thd, int sec)
if (thr_alarm_in_use(&alarmed))
thr_end_alarm(&alarmed);
if (slave_killed(thd))
if (slave_killed(thd,mi))
return 1;
start_time=time((time_t*) 0);
}
return 0;
}
static int request_dump(MYSQL* mysql, MASTER_INFO* mi)
{
char buf[FN_REFLEN + 10];
int len;
int binlog_flags = 0; // for now
char* logname = mi->log_file_name;
int4store(buf, mi->pos);
char* logname = mi->master_log_name;
int4store(buf, mi->master_log_pos);
int2store(buf + 4, binlog_flags);
int4store(buf + 6, server_id);
len = (uint) strlen(logname);
......@@ -929,7 +1421,6 @@ command");
return 0;
}
static ulong read_event(MYSQL* mysql, MASTER_INFO *mi)
{
ulong len = packet_error;
......@@ -944,13 +1435,13 @@ static ulong read_event(MYSQL* mysql, MASTER_INFO *mi)
return packet_error;
#endif
while (!abort_loop && !abort_slave && len == packet_error &&
while (!abort_loop && !mi->abort_slave && len == packet_error &&
read_errno == EINTR )
{
len = mc_net_safe_read(mysql);
read_errno = errno;
}
if (abort_loop || abort_slave)
if (abort_loop || mi->abort_slave)
return packet_error;
if (len == packet_error || (long) len < 1)
{
......@@ -973,65 +1464,74 @@ server_errno=%d)",
return len - 1;
}
int check_expected_error(THD* thd, int expected_error)
int check_expected_error(THD* thd, RELAY_LOG_INFO* rli, int expected_error)
{
switch(expected_error)
switch (expected_error)
{
case ER_NET_READ_ERROR:
case ER_NET_ERROR_ON_WRITE:
case ER_SERVER_SHUTDOWN:
case ER_NEW_ABORTING_CONNECTION:
my_snprintf(last_slave_error, sizeof(last_slave_error),
my_snprintf(rli->last_slave_error, sizeof(rli->last_slave_error),
"Slave: query '%s' partially completed on the master \
and was aborted. There is a chance that your master is inconsistent at this \
point. If you are sure that your master is ok, run this query manually on the\
slave and then restart the slave with SET SQL_SLAVE_SKIP_COUNTER=1;\
SLAVE START;", thd->query);
last_slave_errno = expected_error;
sql_print_error("%s",last_slave_error);
rli->last_slave_errno = expected_error;
sql_print_error("%s",rli->last_slave_error);
return 1;
default:
return 0;
}
}
static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
static int exec_relay_log_event(THD* thd, RELAY_LOG_INFO* rli)
{
const char *error_msg;
Log_event * ev = Log_event::read_log_event((const char*)net->read_pos + 1,
event_len, &error_msg,
mi->old_format);
DBUG_ASSERT(rli->sql_thd==thd);
Log_event * ev = next_event(rli);
DBUG_ASSERT(rli->sql_thd==thd);
if (slave_killed(thd,rli))
return 1;
if (ev)
{
int type_code = ev->get_type_code();
int exec_res;
pthread_mutex_lock(&rli->data_lock);
if (ev->server_id == ::server_id ||
(slave_skip_counter && type_code != ROTATE_EVENT))
(rli->slave_skip_counter && type_code != ROTATE_EVENT))
{
if(type_code == LOAD_EVENT)
skip_load_data_infile(net);
mi->inc_pos(event_len, ev->log_seq);
flush_master_info(mi);
if(slave_skip_counter && /* protect against common user error of
/*
TODO: I/O thread must handle skipping file delivery for
old load data infile events
*/
/* TODO: I/O thread should not even log events with the same server id */
rli->inc_pos(ev->get_event_len(),
type_code != STOP_EVENT ? ev->log_pos : 0,
1/* skip lock*/);
flush_relay_log_info(rli);
if (rli->slave_skip_counter && /* protect against common user error of
setting the counter to 1 instead of 2
while recovering from an failed
auto-increment insert */
!(type_code == INTVAR_EVENT &&
slave_skip_counter == 1))
--slave_skip_counter;
!((type_code == INTVAR_EVENT || type_code == STOP_EVENT) &&
rli->slave_skip_counter == 1))
--rli->slave_skip_counter;
pthread_mutex_unlock(&rli->data_lock);
delete ev;
return 0; // avoid infinite update loops
}
pthread_mutex_unlock(&rli->data_lock);
thd->server_id = ev->server_id; // use the original server id for logging
thd->set_time(); // time the query
if(!thd->log_seq)
thd->log_seq = ev->log_seq;
if (!ev->when)
ev->when = time(NULL);
ev->thd = thd;
exec_res = ev->exec_event(mi);
thd->log_pos = ev->log_pos;
exec_res = ev->exec_event(rli);
DBUG_ASSERT(rli->sql_thd==thd);
delete ev;
return exec_res;
}
......@@ -1045,166 +1545,147 @@ This may also be a network problem, or just a bug in the master or slave code.\
}
}
// slave thread
pthread_handler_decl(handle_slave,arg __attribute__((unused)))
/* slave I/O thread */
pthread_handler_decl(handle_slave_io,arg)
{
#ifndef DBUG_OFF
slave_begin:
#endif
THD *thd; // needs to be first for thread_stack
MYSQL *mysql = NULL ;
MASTER_INFO* mi = (MASTER_INFO*)arg;
char llbuff[22];
bool retried_once = 0;
ulonglong last_failed_pos = 0; // TODO: see if last_failed_pos is needed
DBUG_ASSERT(mi->inited);
pthread_mutex_lock(&LOCK_slave);
if (!server_id)
{
pthread_cond_broadcast(&COND_slave_start);
pthread_mutex_unlock(&LOCK_slave);
sql_print_error("Server id not set, will not start slave");
pthread_exit((void*)1);
}
if(slave_running)
{
pthread_cond_broadcast(&COND_slave_start);
pthread_mutex_unlock(&LOCK_slave);
pthread_exit((void*)1); // safety just in case
}
slave_running = 1;
abort_slave = 0;
pthread_mutex_lock(&mi->run_lock);
#ifndef DBUG_OFF
events_till_abort = abort_slave_event_count;
mi->events_till_abort = abort_slave_event_count;
#endif
pthread_cond_broadcast(&COND_slave_start);
pthread_mutex_unlock(&LOCK_slave);
// int error = 1;
bool retried_once = 0;
ulonglong last_failed_pos = 0;
// needs to call my_thread_init(), otherwise we get a coredump in DBUG_ stuff
my_thread_init();
slave_thd = thd = new THD; // note that contructor of THD uses DBUG_ !
DBUG_ENTER("handle_slave");
thd = new THD; // note that contructor of THD uses DBUG_ !
DBUG_ENTER("handle_slave_io");
pthread_detach_this_thread();
if (init_slave_thread(thd) || init_master_info(&glob_mi))
if (init_slave_thread(thd, SLAVE_THD_IO))
{
sql_print_error("Failed during slave thread initialization");
pthread_cond_broadcast(&mi->start_cond);
pthread_mutex_unlock(&mi->run_lock);
sql_print_error("Failed during slave I/O thread initialization");
goto err;
}
mi->io_thd = thd;
thd->thread_stack = (char*)&thd; // remember where our stack is
thd->temporary_tables = save_temporary_tables; // restore temp tables
threads.append(thd);
glob_mi.pending = 0; //this should always be set to 0 when the slave thread
// is started
mi->slave_running = 1;
mi->abort_slave = 0;
pthread_cond_broadcast(&mi->start_cond);
pthread_mutex_unlock(&mi->run_lock);
DBUG_PRINT("info",("master info: log_file_name=%s, position=%s",
glob_mi.log_file_name, llstr(glob_mi.pos,llbuff)));
mi->master_log_name, llstr(mi->master_log_pos,llbuff)));
if (!(mysql = mc_mysql_init(NULL)))
{
sql_print_error("Slave thread: error in mc_mysql_init()");
sql_print_error("Slave I/O thread: error in mc_mysql_init()");
goto err;
}
thd->proc_info = "connecting to master";
#ifndef DBUG_OFF
sql_print_error("Slave thread initialized");
sql_print_error("Slave I/O thread initialized");
#endif
// we can get killed during safe_connect
if (!safe_connect(thd, mysql, &glob_mi))
sql_print_error("Slave: connected to master '%s@%s:%d',\
replication started in log '%s' at position %s", glob_mi.user,
glob_mi.host, glob_mi.port,
RPL_LOG_NAME,
llstr(glob_mi.pos,llbuff));
if (!safe_connect(thd, mysql, mi))
sql_print_error("Slave I/O thread: connected to master '%s@%s:%d',\
replication started in log '%s' at position %s", mi->user,
mi->host, mi->port,
IO_RPL_LOG_NAME,
llstr(mi->master_log_pos,llbuff));
else
{
sql_print_error("Slave thread killed while connecting to master");
sql_print_error("Slave I/O thread killed while connecting to master");
goto err;
}
connected:
thd->slave_net = &mysql->net;
// register ourselves with the master
// if fails, this is not fatal - we just print the error message and go
// on with life
thd->proc_info = "Checking master version";
if (check_master_version(mysql, &glob_mi))
if (check_master_version(mysql, mi))
{
goto err;
}
if (!glob_mi.old_format)
if (!mi->old_format)
{
// register ourselves with the master
// if fails, this is not fatal - we just print the error message and go
// on with life
thd->proc_info = "Registering slave on master";
if (register_slave_on_master(mysql) || update_slave_list(mysql))
goto err;
}
while (!slave_killed(thd))
while (!slave_killed(thd,mi))
{
thd->proc_info = "Requesting binlog dump";
if(request_dump(mysql, &glob_mi))
if (request_dump(mysql, mi))
{
sql_print_error("Failed on request_dump()");
if(slave_killed(thd))
if(slave_killed(thd,mi))
{
sql_print_error("Slave thread killed while requesting master \
sql_print_error("Slave I/O thread killed while requesting master \
dump");
goto err;
}
thd->proc_info = "Waiiting to reconnect after a failed dump request";
if(mysql->net.vio)
vio_close(mysql->net.vio);
mc_end_server(mysql);
// first time retry immediately, assuming that we can recover
// right away - if first time fails, sleep between re-tries
// hopefuly the admin can fix the problem sometime
if(retried_once)
safe_sleep(thd, glob_mi.connect_retry);
if (retried_once)
safe_sleep(thd, mi, mi->connect_retry);
else
retried_once = 1;
if(slave_killed(thd))
if (slave_killed(thd,mi))
{
sql_print_error("Slave thread killed while retrying master \
sql_print_error("Slave I/O thread killed while retrying master \
dump");
goto err;
}
thd->proc_info = "Reconnecting after a failed dump request";
last_failed_pos=glob_mi.pos;
sql_print_error("Slave: failed dump request, reconnecting to \
try again, log '%s' at postion %s", RPL_LOG_NAME,
llstr(last_failed_pos,llbuff));
if(safe_reconnect(thd, mysql, &glob_mi) || slave_killed(thd))
sql_print_error("Slave I/O thread: failed dump request, \
reconnecting to try again, log '%s' at postion %s", IO_RPL_LOG_NAME,
llstr(mi->master_log_pos,llbuff));
if (safe_reconnect(thd, mysql, mi) || slave_killed(thd,mi))
{
sql_print_error("Slave thread killed during or after reconnect");
sql_print_error("Slave I/O thread killed during or \
after reconnect");
goto err;
}
goto connected;
}
while(!slave_killed(thd))
while (!slave_killed(thd,mi))
{
thd->proc_info = "Reading master update";
ulong event_len = read_event(mysql, &glob_mi);
if(slave_killed(thd))
ulong event_len = read_event(mysql, mi);
if (slave_killed(thd,mi))
{
sql_print_error("Slave thread killed while reading event");
sql_print_error("Slave I/O thread killed while reading event");
goto err;
}
if (event_len == packet_error)
{
if(mc_mysql_errno(mysql) == ER_NET_PACKET_TOO_LARGE)
if (mc_mysql_errno(mysql) == ER_NET_PACKET_TOO_LARGE)
{
sql_print_error("Log entry on master is longer than \
max_allowed_packet on slave. Slave thread will be aborted. If the entry is \
......@@ -1214,111 +1695,260 @@ max_allowed_packet. The current value is %ld", max_allowed_packet);
}
thd->proc_info = "Waiting to reconnect after a failed read";
if(mysql->net.vio)
vio_close(mysql->net.vio);
if(retried_once) // punish repeat offender with sleep
safe_sleep(thd, glob_mi.connect_retry);
mc_end_server(mysql);
if (retried_once) // punish repeat offender with sleep
safe_sleep(thd,mi,mi->connect_retry);
else
retried_once = 1;
if(slave_killed(thd))
if (slave_killed(thd,mi))
{
sql_print_error("Slave thread killed while waiting to \
sql_print_error("Slave I/O thread killed while waiting to \
reconnect after a failed read");
goto err;
}
thd->proc_info = "Reconnecting after a failed read";
last_failed_pos= glob_mi.pos;
sql_print_error("Slave: Failed reading log event, \
reconnecting to retry, log '%s' position %s", RPL_LOG_NAME,
llstr(last_failed_pos, llbuff));
if(safe_reconnect(thd, mysql, &glob_mi) || slave_killed(thd))
sql_print_error("Slave I/O thread: Failed reading log event, \
reconnecting to retry, log '%s' position %s", IO_RPL_LOG_NAME,
llstr(mi->master_log_pos, llbuff));
if (safe_reconnect(thd, mysql, mi) || slave_killed(thd,mi))
{
sql_print_error("Slave thread killed during or after a \
sql_print_error("Slave I/O thread killed during or after a \
reconnect done to recover from failed read");
goto err;
}
goto connected;
} // if(event_len == packet_error)
thd->proc_info = "Processing master log event";
if(exec_event(thd, &mysql->net, &glob_mi, event_len))
thd->proc_info = "Queueing event from master";
if (queue_event(mi,(const char*)mysql->net.read_pos + 1,
(uint)event_len))
{
sql_print_error("\
Error running query, slave aborted. Fix the problem, and re-start \
the slave thread with \"mysqladmin start-slave\". We stopped at log \
'%s' position %s",
RPL_LOG_NAME, llstr(glob_mi.pos, llbuff));
sql_print_error("Slave I/O thread could not queue event \
from master");
goto err;
// there was an error running the query
// abort the slave thread, when the problem is fixed, the user
// should restart the slave with mysqladmin start-slave
}
// TODO: check debugging abort code
#ifndef DBUG_OFF
if(abort_slave_event_count && !--events_till_abort)
if (abort_slave_event_count && !--events_till_abort)
{
sql_print_error("Slave: debugging abort");
sql_print_error("Slave I/O thread: debugging abort");
goto err;
}
#endif
} // while(!slave_killed(thd,mi)) - read/exec loop
} // while(!slave_killed(thd,mi)) - slave loop
// successful exec with offset advance,
// the slave repents and his sins are forgiven!
if(glob_mi.pos > last_failed_pos)
{
retried_once = 0;
// error = 0;
err:
// print the current replication position
sql_print_error("Slave I/O thread exiting, read up to log '%s', position %s",
IO_RPL_LOG_NAME, llstr(mi->master_log_pos,llbuff));
thd->query = thd->db = 0; // extra safety
if(mysql)
mc_mysql_close(mysql);
thd->proc_info = "Waiting for slave mutex on exit";
pthread_mutex_lock(&mi->run_lock);
mi->slave_running = 0;
mi->io_thd = 0;
// TODO: make rpl_status part of MASTER_INFO
change_rpl_status(RPL_ACTIVE_SLAVE,RPL_IDLE_SLAVE);
mi->abort_slave = 0; // TODO: check if this is needed
DBUG_ASSERT(thd->net.buff != 0);
net_end(&thd->net); // destructor will not free it, because we are weird
pthread_mutex_lock(&LOCK_thread_count);
delete thd;
pthread_mutex_unlock(&LOCK_thread_count);
pthread_cond_broadcast(&mi->stop_cond); // tell the world we are done
pthread_mutex_unlock(&mi->run_lock);
my_thread_end();
#ifndef DBUG_OFF
stuck_count = 0;
if(abort_slave_event_count && !events_till_abort)
goto slave_begin;
#endif
}
pthread_exit(0);
DBUG_RETURN(0); // Can't return anything here
}
/* slave SQL logic thread */
pthread_handler_decl(handle_slave_sql,arg)
{
#ifndef DBUG_OFF
else
slave_begin:
#endif
THD *thd; /* needs to be first for thread_stack */
MYSQL *mysql = NULL ;
bool retried_once = 0;
ulonglong last_failed_pos = 0; // TODO: see if this can be removed
char llbuff[22],llbuff1[22];
RELAY_LOG_INFO* rli = &((MASTER_INFO*)arg)->rli;
const char* errmsg=0;
DBUG_ASSERT(rli->inited);
pthread_mutex_lock(&rli->run_lock);
DBUG_ASSERT(!rli->slave_running);
#ifndef DBUG_OFF
rli->events_till_abort = abort_slave_event_count;
#endif
// needs to call my_thread_init(), otherwise we get a coredump in DBUG_ stuff
my_thread_init();
thd = new THD; // note that contructor of THD uses DBUG_ !
DBUG_ENTER("handle_slave_sql");
pthread_detach_this_thread();
if (init_slave_thread(thd, SLAVE_THD_SQL))
{
// show a little mercy, allow slave to read one more event
// before cutting him off - otherwise he gets stuck
// on Intvar events, since they do not advance the offset
// immediately
if (++stuck_count > 2)
events_till_disconnect++;
// TODO: this is currently broken - slave start and change master
// will be stuck if we fail here
pthread_cond_broadcast(&rli->start_cond);
pthread_mutex_unlock(&rli->run_lock);
sql_print_error("Failed during slave thread initialization");
goto err;
}
#endif
} // while(!slave_killed(thd)) - read/exec loop
} // while(!slave_killed(thd)) - slave loop
thd->thread_stack = (char*)&thd; // remember where our stack is
thd->temporary_tables = rli->save_temporary_tables; // restore temp tables
threads.append(thd);
rli->sql_thd = thd;
rli->slave_running = 1;
rli->abort_slave = 0;
pthread_cond_broadcast(&rli->start_cond);
pthread_mutex_unlock(&rli->run_lock);
rli->pending = 0; //this should always be set to 0 when the slave thread
// is started
if (init_relay_log_pos(rli,0,0,1/*need data lock*/,&errmsg))
{
sql_print_error("Error initializing relay log position: %s",
errmsg);
goto err;
}
DBUG_ASSERT(rli->relay_log_pos >= 4);
DBUG_ASSERT(my_b_tell(rli->cur_log) == rli->relay_log_pos);
DBUG_PRINT("info",("master info: log_file_name=%s, position=%s",
rli->master_log_name, llstr(rli->master_log_pos,llbuff)));
DBUG_ASSERT(rli->sql_thd == thd);
sql_print_error("Slave SQL thread initialized, starting replication in \
log '%s' at position %s,relay log: name='%s',pos='%s'", RPL_LOG_NAME,
llstr(rli->master_log_pos,llbuff),rli->relay_log_name,
llstr(rli->relay_log_pos,llbuff1));
while (!slave_killed(thd,rli))
{
thd->proc_info = "Processing master log event";
DBUG_ASSERT(rli->sql_thd == thd);
if (exec_relay_log_event(thd,rli))
{
// do not scare the user if SQL thread was simply killed or stopped
if (!slave_killed(thd,rli))
sql_print_error("\
Error running query, slave SQL thread aborted. Fix the problem, and restart \
the slave SQL thread with \"mysqladmin start-slave\". We stopped at log \
'%s' position %s",
RPL_LOG_NAME, llstr(rli->master_log_pos, llbuff));
goto err;
}
} // while(!slave_killed(thd,rli)) - read/exec loop
// error = 0;
err:
// print the current replication position
sql_print_error("Slave thread exiting, replication stopped in log '%s' at \
position %s",
RPL_LOG_NAME, llstr(glob_mi.pos,llbuff));
sql_print_error("Slave SQL thread exiting, replication stopped in log \
'%s' at position %s",
RPL_LOG_NAME, llstr(rli->master_log_pos,llbuff));
thd->query = thd->db = 0; // extra safety
if(mysql)
mc_mysql_close(mysql);
thd->proc_info = "Waiting for slave mutex on exit";
pthread_mutex_lock(&LOCK_slave);
slave_running = 0;
change_rpl_status(RPL_ACTIVE_SLAVE,RPL_IDLE_SLAVE);
abort_slave = 0;
save_temporary_tables = thd->temporary_tables;
pthread_mutex_lock(&rli->run_lock);
DBUG_ASSERT(rli->slave_running == 1); // tracking buffer overrun
rli->slave_running = 0;
rli->save_temporary_tables = thd->temporary_tables;
//TODO: see if we can do this conditionally in next_event() instead
// to avoid unneeded position re-init
rli->log_pos_current=0;
thd->temporary_tables = 0; // remove tempation from destructor to close them
pthread_cond_broadcast(&COND_slave_stopped); // tell the world we are done
pthread_mutex_unlock(&LOCK_slave);
DBUG_ASSERT(thd->net.buff != 0);
net_end(&thd->net); // destructor will not free it, because we are weird
slave_thd = 0;
DBUG_ASSERT(rli->sql_thd == thd);
rli->sql_thd = 0;
pthread_mutex_lock(&LOCK_thread_count);
delete thd;
pthread_mutex_unlock(&LOCK_thread_count);
pthread_cond_broadcast(&rli->stop_cond);
// tell the world we are done
pthread_mutex_unlock(&rli->run_lock);
my_thread_end();
#ifndef DBUG_OFF
if(abort_slave_event_count && !events_till_abort)
#ifndef DBUG_OFF // TODO: reconsider the code below
if (abort_slave_event_count && !rli->events_till_abort)
goto slave_begin;
#endif
pthread_exit(0);
DBUG_RETURN(0); // Can't return anything here
}
int queue_event(MASTER_INFO* mi,const char* buf,uint event_len)
{
int error;
bool inc_pos = 1;
if (mi->old_format)
return 1; // TODO: deal with old format
/* try to connect until successful or slave killed */
switch (buf[EVENT_TYPE_OFFSET])
{
case ROTATE_EVENT:
{
Rotate_log_event rev(buf,event_len,0);
if (!rev.is_valid())
return 1;
DBUG_ASSERT(rev.ident_len<sizeof(mi->master_log_name));
memcpy(mi->master_log_name,rev.new_log_ident,
rev.ident_len);
mi->master_log_name[rev.ident_len] = 0;
mi->master_log_pos = rev.pos;
inc_pos = 0;
#ifndef DBUG_OFF
/* if we do not do this, we will be getting the first
rotate event forever, so
we need to not disconnect after one
*/
if (disconnect_slave_event_count)
events_till_disconnect++;
#endif
break;
}
default:
break;
}
if (!(error = mi->rli.relay_log.appendv(buf,event_len,0)))
{
if (inc_pos)
mi->master_log_pos += event_len;
}
return error;
}
void end_relay_log_info(RELAY_LOG_INFO* rli)
{
if (!rli->inited)
return;
if (rli->info_fd >= 0)
{
end_io_cache(&rli->info_file);
(void)my_close(rli->info_fd, MYF(MY_WME));
rli->info_fd = -1;
}
if (rli->cur_log_fd >= 0)
{
end_io_cache(&rli->cache_buf);
(void)my_close(rli->cur_log_fd, MYF(MY_WME));
rli->cur_log_fd = -1;
}
rli->inited = 0;
rli->log_pos_current=0;
rli->relay_log.close(1);
}
/* try to connect until successful or slave killed */
static int safe_connect(THD* thd, MYSQL* mysql, MASTER_INFO* mi)
{
return connect_to_master(thd, mysql, mi, 0);
......@@ -1328,7 +1958,6 @@ static int safe_connect(THD* thd, MYSQL* mysql, MASTER_INFO* mi)
Try to connect until successful or slave killed or we have retried
master_retry_count times
*/
static int connect_to_master(THD* thd, MYSQL* mysql, MASTER_INFO* mi,
bool reconnect)
{
......@@ -1337,15 +1966,10 @@ static int connect_to_master(THD* thd, MYSQL* mysql, MASTER_INFO* mi,
ulong err_count=0;
char llbuff[22];
/*
If we lost connection after reading a state set event
we will be re-reading it, so pending needs to be cleared
*/
mi->pending = 0;
#ifndef DBUG_OFF
events_till_disconnect = disconnect_slave_event_count;
#endif
while (!(slave_was_killed = slave_killed(thd)) &&
while (!(slave_was_killed = slave_killed(thd,mi)) &&
(reconnect ? mc_mysql_reconnect(mysql) :
!mc_mysql_connect(mysql, mi->host, mi->user, mi->password, 0,
mi->port, 0, 0)))
......@@ -1353,12 +1977,13 @@ static int connect_to_master(THD* thd, MYSQL* mysql, MASTER_INFO* mi,
/* Don't repeat last error */
if (mc_mysql_errno(mysql) != last_errno)
{
sql_print_error("Slave thread: error connecting to master: \
%s, last_errno=%d, retry in %d sec",
sql_print_error("Slave I/O thread: error connecting to master \
'%s@%s:%d': \
%s, last_errno=%d, retry in %d sec",mi->user,mi->host,mi->port,
mc_mysql_error(mysql), last_errno=mc_mysql_errno(mysql),
mi->connect_retry);
}
safe_sleep(thd, mi->connect_retry);
safe_sleep(thd,mi,mi->connect_retry);
/* by default we try forever. The reason is that failure will trigger
master election, so if the user did not set master_retry_count we
do not want to have electioin triggered on the first failure to
......@@ -1377,10 +2002,10 @@ static int connect_to_master(THD* thd, MYSQL* mysql, MASTER_INFO* mi,
{
if (reconnect)
sql_print_error("Slave: connected to master '%s@%s:%d',\
replication resumed in log '%s' at position %s", glob_mi.user,
glob_mi.host, glob_mi.port,
RPL_LOG_NAME,
llstr(glob_mi.pos,llbuff));
replication resumed in log '%s' at position %s", mi->user,
mi->host, mi->port,
IO_RPL_LOG_NAME,
llstr(mi->master_log_pos,llbuff));
else
{
change_rpl_status(RPL_IDLE_SLAVE,RPL_ACTIVE_SLAVE);
......@@ -1405,6 +2030,175 @@ static int safe_reconnect(THD* thd, MYSQL* mysql, MASTER_INFO* mi)
return connect_to_master(thd, mysql, mi, 1);
}
int flush_relay_log_info(RELAY_LOG_INFO* rli)
{
IO_CACHE* file = &rli->info_file;
char lbuf[22],lbuf1[22];
my_b_seek(file, 0L);
my_b_printf(file, "%s\n%s\n%s\n%s\n",
rli->relay_log_name, llstr(rli->relay_log_pos, lbuf),
rli->master_log_name, llstr(rli->master_log_pos, lbuf1)
);
flush_io_cache(file);
flush_io_cache(rli->cur_log);
return 0;
}
IO_CACHE* reopen_relay_log(RELAY_LOG_INFO* rli, const char** errmsg)
{
DBUG_ASSERT(rli->cur_log != &rli->cache_buf);
IO_CACHE* cur_log = rli->cur_log=&rli->cache_buf;
DBUG_ASSERT(rli->cur_log_fd == -1);
if ((rli->cur_log_fd=open_binlog(cur_log,rli->relay_log_name,
errmsg))<0)
return 0;
my_b_seek(cur_log,rli->relay_log_pos);
return cur_log;
}
Log_event* next_event(RELAY_LOG_INFO* rli)
{
Log_event* ev;
IO_CACHE* cur_log = rli->cur_log;
pthread_mutex_t *log_lock = rli->relay_log.get_log_lock();
const char* errmsg=0;
THD* thd = rli->sql_thd;
bool was_killed;
DBUG_ASSERT(thd != 0);
// For most operations we need to protect rli members with data_lock,
// so we will hold it for the most of the loop below
// However, we will release it whenever it is worth the hassle,
// and in the cases when we go into a pthread_cond_wait() with the
// non-data_lock mutex
pthread_mutex_lock(&rli->data_lock);
for (;!(was_killed=slave_killed(thd,rli));)
{
// we can have two kinds of log reading:
// hot_log - rli->cur_log points at the IO_CACHE of relay_log, which
// is actively being updated by the I/O thread. We need to be careful
// in this case and make sure that we are not looking at a stale log that
// has already been rotated. If it has been, we reopen the log
// the other case is much simpler - we just have a read only log that
// nobody else will be updating.
bool hot_log;
if ((hot_log = (cur_log != &rli->cache_buf)))
{
DBUG_ASSERT(rli->cur_log_fd == -1); // foreign descriptor
pthread_mutex_lock(log_lock);
// reading cur_log->init_count here is safe because the log will only
// be rotated when we hold relay_log.LOCK_log
if (cur_log->init_count != rli->cur_log_init_count)
{
if (!(cur_log=reopen_relay_log(rli,&errmsg)))
{
pthread_mutex_unlock(log_lock);
goto err;
}
pthread_mutex_unlock(log_lock);
hot_log=0;
}
}
DBUG_ASSERT(my_b_tell(cur_log) >= 4);
DBUG_ASSERT(my_b_tell(cur_log) == rli->relay_log_pos + rli->pending);
if ((ev=Log_event::read_log_event(cur_log,0,rli->mi->old_format)))
{
DBUG_ASSERT(thd==rli->sql_thd);
if (hot_log)
pthread_mutex_unlock(log_lock);
pthread_mutex_unlock(&rli->data_lock);
return ev;
}
DBUG_ASSERT(thd==rli->sql_thd);
if (!cur_log->error) /* EOF */
{
// on a hot log, EOF means that there are no more updates to
// process and we must block until I/O thread adds some and
// signals us to continue
if (hot_log)
{
DBUG_ASSERT(cur_log->init_count == rli->cur_log_init_count);
//we can, and should release data_lock while we are waiting for
// update. If we do not, show slave status will block
pthread_mutex_unlock(&rli->data_lock);
// IMPORTANT: note that wait_for_update will unlock LOCK_log, but
// expects the caller to lock it
rli->relay_log.wait_for_update(rli->sql_thd);
// re-acquire data lock since we released it earlier
pthread_mutex_lock(&rli->data_lock);
continue;
}
// if the log was not hot, we need to move to the next log in
// sequence. The next log could be hot or cold, we deal with both
// cases separately after doing some common initialization
else
{
end_io_cache(cur_log);
DBUG_ASSERT(rli->cur_log_fd >= 0);
my_close(rli->cur_log_fd, MYF(MY_WME));
rli->cur_log_fd = -1;
int error;
// purge_first_log will properly set up relay log coordinates in rli
if (rli->relay_log.purge_first_log(rli))
{
errmsg = "Error purging processed log";
goto err;
}
// next log is hot
if (rli->relay_log.is_active(rli->linfo.log_file_name))
{
#ifdef EXTRA_DEBUG
sql_print_error("next log '%s' is currently active",
rli->linfo.log_file_name);
#endif
rli->cur_log = cur_log = rli->relay_log.get_log_file();
rli->cur_log_init_count = cur_log->init_count;
DBUG_ASSERT(rli->cur_log_fd == -1);
// read pointer has to be at the start since we are the only
// reader
if (check_binlog_magic(cur_log,&errmsg))
goto err;
continue;
}
// if we get here, the log was not hot, so we will have to
// open it ourselves
#ifdef EXTRA_DEBUG
sql_print_error("next log '%s' is not active",
rli->linfo.log_file_name);
#endif
// open_binlog() will check the magic header
if ((rli->cur_log_fd=open_binlog(cur_log,rli->linfo.log_file_name,
&errmsg))<0)
goto err;
}
}
else // read failed with a non-EOF error
{
// TODO: come up with something better to handle this error
sql_print_error("Slave SQL thread: I/O error reading \
event(errno=%d,cur_log->error=%d)",
my_errno,cur_log->error);
// no need to hog the mutex while we sleep
pthread_mutex_unlock(&rli->data_lock);
safe_sleep(rli->sql_thd,rli->mi,1);
pthread_mutex_lock(&rli->data_lock);
}
}
if (!errmsg && was_killed)
errmsg = "slave SQL thread was killed";
err:
pthread_mutex_unlock(&rli->data_lock);
sql_print_error("Error reading relay log event: %s", errmsg);
return 0;
}
#ifdef __GNUC__
template class I_List_iterator<i_string>;
......
sql/slave.h
View file @ 6291b7b5
......@@ -2,67 +2,265 @@
#define SLAVE_H
#include "mysql.h"
#include "my_list.h"
#define SLAVE_NET_TIMEOUT 3600
#define MAX_SLAVE_ERRMSG 1024
/*
The replication is accomplished by starting two threads - I/O
thread, and SQL thread. I/O thread is associated with its
MASTER_INFO struct, so MASTER_INFO can be viewed as I/O thread
descriptor. SQL thread is associated with RELAY_LOG_INFO struct.
I/O thread reads maintains a connection to the master, and reads log
events from the master as they arrive, queueing them by writing them
out into the temporary slave binary log (relay log). The SQL thread,
in turn, reads the slave binary log executing each event.
Relay log is needed to be able to handle situations when there is a large
backlog of unprocessed events from the master (eg. one particular update
takes a day to finish), and to be able to restart the slave server without
having to re-read the master updates.
*/
extern ulong slave_net_timeout, master_retry_count;
extern char* slave_load_tmpdir;
extern my_string master_info_file,relay_log_info_file;
extern my_string opt_relay_logname, opt_relaylog_index_name;
extern bool opt_skip_slave_start;
struct st_master_info;
typedef struct st_master_info
#define LOCK_ACTIVE_MI { pthread_mutex_lock(&LOCK_active_mi); \
++active_mi_in_use; \
pthread_mutex_unlock(&LOCK_active_mi);}
#define UNLOCK_ACTIVE_MI { pthread_mutex_lock(&LOCK_active_mi); \
--active_mi_in_use; \
pthread_mutex_unlock(&LOCK_active_mi); }
/*
st_relay_log_info contains information on the current relay log and
relay log offset, and master log name and log sequence corresponding to the
last update. Additionally, misc information specific to the SQL thread is
included.
st_relay_log_info is initialized from the slave.info file if such exists.
Otherwise, data members are intialized with defaults. The initialization is
done with init_relay_log_info() call.
The format of slave.info file:
relay_log_name
relay_log_pos
master_log_name
master_log_pos
To clean up, call end_relay_log_info()
*/
typedef struct st_relay_log_info
{
char log_file_name[FN_REFLEN];
ulonglong pos,pending;
File fd; // we keep the file open, so we need to remember the file pointer
IO_CACHE file;
// the variables below are needed because we can change masters on the fly
char host[HOSTNAME_LENGTH+1];
char user[USERNAME_LENGTH+1];
char password[HASH_PASSWORD_LENGTH+1];
uint port;
uint connect_retry;
uint32 last_log_seq; // log sequence number of last processed event
pthread_mutex_t lock;
pthread_cond_t cond;
// info_fd - file descriptor of the info file. set only during
// initialization or clean up - safe to read anytime
// cur_log_fd - file descriptor of the current read relay log, protected by
// data_lock
File info_fd,cur_log_fd;
// IO_CACHE of the info file - set only during init or end, safe to read
// anytime
IO_CACHE info_file;
// name of current read relay log - protected by data_lock
char relay_log_name[FN_REFLEN];
// master log name corresponding to current read position - protected by
// data lock
char master_log_name[FN_REFLEN];
// original log position of last processed event - protected by data_lock
volatile uint32 master_log_pos;
// when we restart slave thread we need to have access to the previously
// created temporary tables. Modified only on init/end and by the SQL
// thread, read only by SQL thread, need no mutex
TABLE* save_temporary_tables;
// relay_log_pos - current offset in the relay log - protected by data_lock
// pending - in some cases we do not increment offset immediately after
// processing an event, because the following event needs to be processed
// atomically together with this one ( so far, there is only one type of
// such event - Intvar_event that sets auto_increment value). However, once
// both events have been processed, we need to increment by the cumulative
// offset. pending stored the extra offset to be added to the position.
ulonglong relay_log_pos,pending;
// standard lock acquistion order to avoid deadlocks:
// run_lock, data_lock, relay_log.LOCK_log,relay_log.LOCK_index
pthread_mutex_t data_lock,run_lock;
// start_cond is broadcast when SQL thread is started
// stop_cond - when stopped
// data_cond - when data protected by data_lock changes
pthread_cond_t start_cond,stop_cond,data_cond;
// if not set, the value of other members of the structure are undefined
bool inited;
bool old_format; /* master binlog is in 3.23 format */
st_master_info():pending(0),fd(-1),last_log_seq(0),inited(0),
old_format(0)
// parent master info structure
struct st_master_info *mi;
// protected with internal locks
// must get data_lock when resetting the logs
MYSQL_LOG relay_log;
LOG_INFO linfo;
IO_CACHE cache_buf,*cur_log;
/* needed to deal properly with cur_log getting closed and re-opened with
a different log under our feet
*/
int cur_log_init_count;
volatile bool abort_slave, slave_running;
// needed for problems when slave stops and
// we want to restart it skipping one or more events in the master log that
// have caused errors, and have been manually applied by DBA already
volatile uint32 slave_skip_counter;
#ifndef DBUG_OFF
int events_till_abort;
#endif
int last_slave_errno;
char last_slave_error[MAX_SLAVE_ERRMSG];
THD* sql_thd;
bool log_pos_current;
st_relay_log_info():info_fd(-1),cur_log_fd(-1),inited(0),
cur_log_init_count(0),
log_pos_current(0)
{
host[0] = 0; user[0] = 0; password[0] = 0;
pthread_mutex_init(&lock, MY_MUTEX_INIT_FAST);
pthread_cond_init(&cond, NULL);
relay_log_name[0] = master_log_name[0] = 0;
pthread_mutex_init(&run_lock, MY_MUTEX_INIT_FAST);
pthread_mutex_init(&data_lock, MY_MUTEX_INIT_FAST);
pthread_cond_init(&data_cond, NULL);
pthread_cond_init(&start_cond, NULL);
pthread_cond_init(&stop_cond, NULL);
}
~st_master_info()
~st_relay_log_info()
{
pthread_mutex_destroy(&lock);
pthread_cond_destroy(&cond);
pthread_mutex_destroy(&run_lock);
pthread_mutex_destroy(&data_lock);
pthread_cond_destroy(&data_cond);
pthread_cond_destroy(&start_cond);
pthread_cond_destroy(&stop_cond);
}
inline void inc_pending(ulonglong val)
{
pending += val;
}
inline void inc_pos(ulonglong val, uint32 log_seq)
// TODO: this probably needs to be fixed
inline void inc_pos(ulonglong val, uint32 log_pos, bool skip_lock=0)
{
pthread_mutex_lock(&lock);
pos += val + pending;
if (!skip_lock)
pthread_mutex_lock(&data_lock);
relay_log_pos += val+pending;
pending = 0;
last_log_seq = log_seq;
pthread_cond_broadcast(&cond);
pthread_mutex_unlock(&lock);
if (log_pos)
master_log_pos = log_pos+val;
pthread_cond_broadcast(&data_cond);
if (!skip_lock)
pthread_mutex_unlock(&data_lock);
}
// thread safe read of position - not needed if we are in the slave thread,
// but required otherwise
inline void read_pos(ulonglong& var)
{
pthread_mutex_lock(&lock);
var = pos;
pthread_mutex_unlock(&lock);
pthread_mutex_lock(&data_lock);
var = relay_log_pos;
pthread_mutex_unlock(&data_lock);
}
int wait_for_pos(THD* thd, String* log_name, ulonglong log_pos);
} RELAY_LOG_INFO;
// repopen_relay_log() is called when we notice that the current "hot" log
// got rotated under our feet
IO_CACHE* reopen_relay_log(RELAY_LOG_INFO* rli, const char** errmsg);
Log_event* next_event(RELAY_LOG_INFO* rli);
/* st_master_info contains information about how to connect to a master,
current master log name, and current log offset, as well as misc
control variables
st_master_info is initialized once from the master.info file if such
exists. Otherwise, data members corresponding to master.info fields are
initialized with defaults specified by master-* options. The initialization
is done through init_master_info() call.
The format of master.info file:
log_name
log_pos
master_host
master_user
master_pass
master_port
master_connect_retry
To write out the contents of master.info file to disk ( needed every
time we read and queue data from the master ), a call to
flush_master_info() is required.
To clean up, call end_master_info()
*/
typedef struct st_master_info
{
char master_log_name[FN_REFLEN];
ulonglong master_log_pos;
File fd;
IO_CACHE file;
// the variables below are needed because we can change masters on the fly
char host[HOSTNAME_LENGTH+1];
char user[USERNAME_LENGTH+1];
char password[HASH_PASSWORD_LENGTH+1];
uint port;
uint connect_retry;
pthread_mutex_t data_lock,run_lock;
pthread_cond_t data_cond,start_cond,stop_cond;
bool inited;
bool old_format; /* master binlog is in 3.23 format */
RELAY_LOG_INFO rli;
#ifndef DBUG_OFF
int events_till_abort;
#endif
volatile bool abort_slave, slave_running;
THD* io_thd;
st_master_info():fd(-1),inited(0),
old_format(0),io_thd(0)
{
host[0] = 0; user[0] = 0; password[0] = 0;
pthread_mutex_init(&run_lock, MY_MUTEX_INIT_FAST);
pthread_mutex_init(&data_lock, MY_MUTEX_INIT_FAST);
pthread_cond_init(&data_cond, NULL);
pthread_cond_init(&start_cond, NULL);
pthread_cond_init(&stop_cond, NULL);
}
~st_master_info()
{
pthread_mutex_destroy(&run_lock);
pthread_mutex_destroy(&data_lock);
pthread_cond_destroy(&data_cond);
pthread_cond_destroy(&start_cond);
pthread_cond_destroy(&stop_cond);
}
} MASTER_INFO;
int queue_event(MASTER_INFO* mi,const char* buf,uint event_len);
typedef struct st_table_rule_ent
{
char* db;
......@@ -74,22 +272,52 @@ typedef struct st_table_rule_ent
#define TABLE_RULE_ARR_SIZE 16
#define MAX_SLAVE_ERRMSG 1024
#define RPL_LOG_NAME (glob_mi.log_file_name[0] ? glob_mi.log_file_name :\
#define RPL_LOG_NAME (rli->master_log_name[0] ? rli->master_log_name :\
"FIRST")
#define IO_RPL_LOG_NAME (mi->master_log_name[0] ? mi->master_log_name :\
"FIRST")
/* masks for start/stop operations on io and sql slave threads */
#define SLAVE_IO 1
#define SLAVE_SQL 2
#define SLAVE_FORCE_ALL 4 /* if this is set, if first gives an
error, second will be tried. Otherwise,
if first fails, we fail
*/
int init_slave();
int flush_master_info(MASTER_INFO* mi);
int flush_relay_log_info(RELAY_LOG_INFO* rli);
int register_slave_on_master(MYSQL* mysql);
int terminate_slave_threads(MASTER_INFO* mi, int thread_mask,
bool skip_lock = 0);
int terminate_slave_thread(THD* thd, pthread_mutex_t* term_mutex,
pthread_mutex_t* cond_lock,
pthread_cond_t* term_cond,
volatile bool* slave_running);
int start_slave_threads(bool need_slave_mutex, bool wait_for_start,
MASTER_INFO* mi, const char* master_info_fname,
const char* slave_info_fname, int thread_mask);
/* cond_lock is usually same as start_lock. It is needed for the case when
start_lock is 0 which happens if start_slave_thread() is called already
inside the start_lock section, but at the same time we want a
pthread_cond_wait() on start_cond,start_lock
*/
int start_slave_thread(pthread_handler h_func, pthread_mutex_t* start_lock,
pthread_mutex_t *cond_lock,
pthread_cond_t* start_cond,
volatile bool* slave_running,
MASTER_INFO* mi);
int mysql_table_dump(THD* thd, const char* db,
const char* tbl_name, int fd = -1);
// if fd is -1, dump to NET
int fetch_nx_table(THD* thd, const char* db_name, const char* table_name,
int fetch_master_table(THD* thd, const char* db_name, const char* table_name,
MASTER_INFO* mi, MYSQL* mysql);
// retrieve non-exitent table from master
int show_master_info(THD* thd);
int show_master_info(THD* thd, MASTER_INFO* mi);
int show_binlog_info(THD* thd);
int tables_ok(THD* thd, TABLE_LIST* tables);
......@@ -105,29 +333,31 @@ int add_wild_table_rule(DYNAMIC_ARRAY* a, const char* table_spec);
void init_table_rule_hash(HASH* h, bool* h_inited);
void init_table_rule_array(DYNAMIC_ARRAY* a, bool* a_inited);
char* rewrite_db(char* db);
int check_expected_error(THD* thd, int error_code);
int check_expected_error(THD* thd, RELAY_LOG_INFO* rli, int error_code);
void skip_load_data_infile(NET* net);
void slave_print_error(int err_code, const char* msg, ...);
void slave_print_error(RELAY_LOG_INFO* rli,int err_code, const char* msg, ...);
void end_slave(); // clean up
int init_master_info(MASTER_INFO* mi);
int init_master_info(MASTER_INFO* mi, const char* master_info_fname,
const char* slave_info_fname);
void end_master_info(MASTER_INFO* mi);
extern bool opt_log_slave_updates ;
pthread_handler_decl(handle_slave,arg);
extern bool volatile abort_loop, abort_slave, slave_running;
extern uint32 slave_skip_counter;
// needed for problems when slave stops and
// we want to restart it skipping one or more events in the master log that
// have caused errors, and have been manually applied by DBA already
int init_relay_log_info(RELAY_LOG_INFO* rli, const char* info_fname);
void end_relay_log_info(RELAY_LOG_INFO* rli);
void lock_slave_threads(MASTER_INFO* mi);
void unlock_slave_threads(MASTER_INFO* mi);
void init_thread_mask(int* mask,MASTER_INFO* mi,bool inverse);
int init_relay_log_pos(RELAY_LOG_INFO* rli,const char* log,ulonglong pos,
bool need_data_lock, const char** errmsg);
extern int last_slave_errno;
#ifndef DBUG_OFF
extern int events_till_abort;
#endif
extern char last_slave_error[MAX_SLAVE_ERRMSG];
extern pthread_t slave_real_id;
extern THD* slave_thd;
extern MASTER_INFO glob_mi;
int purge_relay_logs(RELAY_LOG_INFO* rli,bool just_reset,const char** errmsg);
extern bool opt_log_slave_updates ;
pthread_handler_decl(handle_slave_io,arg);
pthread_handler_decl(handle_slave_sql,arg);
extern bool volatile abort_loop;
extern MASTER_INFO main_mi, *active_mi; // active_mi for multi-master
extern volatile int active_mi_in_use;
extern LIST master_list;
extern HASH replicate_do_table, replicate_ignore_table;
extern DYNAMIC_ARRAY replicate_wild_do_table, replicate_wild_ignore_table;
extern bool do_table_inited, ignore_table_inited,
......@@ -141,7 +371,8 @@ extern int disconnect_slave_event_count, abort_slave_event_count ;
// the master variables are defaults read from my.cnf or command line
extern uint master_port, master_connect_retry, report_port;
extern my_string master_user, master_password, master_host,
master_info_file, report_user, report_host, report_password;
master_info_file, relay_log_info_file, report_user, report_host,
report_password;
extern I_List<i_string> replicate_do_db, replicate_ignore_db;
extern I_List<i_string_pair> replicate_rewrite_db;
......
sql/sql_class.cc
View file @ 6291b7b5
......@@ -98,7 +98,6 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0),
current_linfo = 0;
slave_thread = 0;
slave_proxy_id = 0;
log_seq = 0;
file_id = 0;
cond_count=0;
convert_set=0;
......@@ -119,6 +118,7 @@ THD::THD():user_time(0),fatal_error(0),last_insert_id_used(0),
where="field list";
server_id = ::server_id;
slave_net = 0;
log_pos = 0;
server_status=SERVER_STATUS_AUTOCOMMIT;
update_lock_default= low_priority_updates ? TL_WRITE_LOW_PRIORITY : TL_WRITE;
options=thd_startup_options;
......@@ -216,10 +216,11 @@ THD::~THD()
DBUG_VOID_RETURN;
}
void THD::prepare_to_die()
void THD::awake(bool prepare_to_die)
{
thr_alarm_kill(real_id);
if (prepare_to_die)
killed = 1;
thr_alarm_kill(real_id);
#ifdef SIGNAL_WITH_VIO_CLOSE
close_active_vio();
#endif
......@@ -228,6 +229,10 @@ void THD::prepare_to_die()
pthread_mutex_lock(&mysys_var->mutex);
if (!system_thread) // Don't abort locks
mysys_var->abort=1;
// this broadcast could be up in the air if the victim thread
// exits the cond in the time between read and broadcast, but that is
// ok since all we want to do is to make the victim thread get out
// of waiting on current_cond
if (mysys_var->current_cond)
{
pthread_mutex_lock(mysys_var->current_mutex);
......
sql/sql_class.h
View file @ 6291b7b5
......@@ -21,6 +21,8 @@
#pragma interface /* gcc class implementation */
#endif
// TODO: create log.h and move all the log header stuff there
class Query_log_event;
class Load_log_event;
class Slave_log_event;
......@@ -40,6 +42,8 @@ enum enum_log_type { LOG_CLOSED, LOG_NORMAL, LOG_NEW, LOG_BIN };
#define LOG_INFO_FATAL -7
#define LOG_INFO_IN_USE -8
struct st_relay_log_info;
typedef struct st_log_info
{
char log_file_name[FN_REFLEN];
......@@ -64,8 +68,6 @@ class MYSQL_LOG {
char time_buff[20],db[NAME_LEN+1];
char log_file_name[FN_REFLEN],index_file_name[FN_REFLEN];
bool write_error,inited;
uint32 log_seq; // current event sequence number
// needed this for binlog
uint file_id; // current file sequence number for load data infile
// binary logging
bool no_rotate; // for binlog - if log name can never change
......@@ -74,36 +76,52 @@ class MYSQL_LOG {
// purging
enum cache_type io_cache_type;
bool need_start_event;
pthread_cond_t update_cond;
bool no_auto_events; // for relay binlog
friend class Log_event;
public:
MYSQL_LOG();
~MYSQL_LOG();
pthread_mutex_t* get_log_lock() { return &LOCK_log; }
IO_CACHE* get_log_file() { return &log_file; }
void signal_update() { pthread_cond_broadcast(&update_cond);}
void wait_for_update(THD* thd);
void set_need_start_event() { need_start_event = 1; }
void set_index_file_name(const char* index_file_name = 0);
void init(enum_log_type log_type_arg,
enum cache_type io_cache_type_arg = WRITE_CACHE);
enum cache_type io_cache_type_arg = WRITE_CACHE,
bool no_auto_events_arg = 0);
void open(const char *log_name,enum_log_type log_type,
const char *new_name=0);
const char *new_name, enum cache_type io_cache_type_arg,
bool no_auto_events_arg);
void new_file(bool inside_mutex = 0);
bool open_index(int options);
void close_index();
bool write(THD *thd, enum enum_server_command command,const char *format,...);
bool write(THD *thd, enum enum_server_command command,
const char *format,...);
bool write(THD *thd, const char *query, uint query_length,
time_t query_start=0);
bool write(Log_event* event_info); // binary log write
bool write(IO_CACHE *cache);
//v stands for vector
//invoked as appendv(buf1,len1,buf2,len2,...,bufn,lenn,0)
bool appendv(const char* buf,uint len,...);
int generate_new_name(char *new_name,const char *old_name);
void make_log_name(char* buf, const char* log_ident);
bool is_active(const char* log_file_name);
int purge_logs(THD* thd, const char* to_log);
int purge_first_log(struct st_relay_log_info* rli);
int reset_logs(THD* thd);
void close(bool exiting = 0); // if we are exiting, we also want to close the
// index file
// iterating through the log index file
int find_first_log(LOG_INFO* linfo, const char* log_name);
int find_next_log(LOG_INFO* linfo);
int find_first_log(LOG_INFO* linfo, const char* log_name,
bool need_mutex=1);
int find_next_log(LOG_INFO* linfo, bool need_mutex=1);
int get_current_log(LOG_INFO* linfo);
uint next_file_id();
......@@ -226,33 +244,72 @@ class i_string_pair: public ilink
};
/****************************************************************************
** every connection is handled by a thread with a THD
****************************************************************************/
class delayed_insert;
/* For each client connection we create a separate thread with THD serving as
a thread/connection descriptor */
class THD :public ilink {
public:
NET net;
LEX lex;
MEM_ROOT mem_root;
HASH user_vars;
String packet; /* Room for 1 row */
struct sockaddr_in remote;
struct rand_struct rand;
NET net; // client connection descriptor
LEX lex; // parse tree descriptor
MEM_ROOT mem_root; // memory allocation pool
HASH user_vars; // hash for user variables
String packet; // dynamic string buffer used for network I/O
struct sockaddr_in remote; // client socket address
struct rand_struct rand; // used for authentication
/* query points to the current query,
thread_stack is a pointer to the stack frame of handle_one_connection(),
which is called first in the thread for handling a client
*/
char *query,*thread_stack;
/*
host - host of the client
user - user of the client, set to NULL until the user has been read from
the connection
priv_user - not sure why we have it, but it is set to "boot" when we run
with --bootstrap
db - currently selected database
ip - client IP
*/
char *host,*user,*priv_user,*db,*ip;
/* proc_info points to a string that will show in the Info column of
SHOW PROCESSLIST output
host_or_ip points to host if host is available, otherwise points to ip
*/
const char *proc_info, *host_or_ip;
/*
client_capabilities has flags describing what the client can do
sql_mode determines if certain non-standard SQL behaviour should be
enabled
max_packet_length - supposed to be maximum packet length the client
can handle, but it currently appears to be assigned but never used
except for one debugging statement
*/
uint client_capabilities,sql_mode,max_packet_length;
/*
master_access - privillege descriptor mask for system threads
db_access - privillege descriptor mask for regular threads
*/
uint master_access,db_access;
/*
open_tables - list of regular tables in use by this thread
temporary_tables - list of temp tables in use by this thread
handler_tables - list of tables that were opened with HANDLER OPEN
and are still in use by this thread
*/
TABLE *open_tables,*temporary_tables, *handler_tables;
// TODO: document the variables below
MYSQL_LOCK *lock,*locked_tables;
ULL *ull;
struct st_my_thread_var *mysys_var;
enum enum_server_command command;
uint32 server_id;
uint32 log_seq;
uint32 file_id; // for LOAD DATA INFILE
const char *where;
time_t start_time,time_after_lock,user_time;
......@@ -293,15 +350,18 @@ class THD :public ilink {
bool system_thread,in_lock_tables,global_read_lock;
bool query_error, bootstrap, cleanup_done;
bool volatile killed;
LOG_INFO* current_linfo;
// if we do a purge of binary logs, log index info of the threads
// that are currently reading it needs to be adjusted. To do that
// each thread that is using LOG_INFO needs to adjust the pointer to it
LOG_INFO* current_linfo;
ulong slave_proxy_id; // in slave thread we need to know in behalf of which
// in slave thread we need to know in behalf of which
// thread the query is being run to replicate temp tables properly
ulong slave_proxy_id;
NET* slave_net; // network connection from slave to master
uint32 log_pos;
THD();
~THD();
......@@ -331,7 +391,7 @@ class THD :public ilink {
pthread_mutex_unlock(&active_vio_lock);
}
#endif
void prepare_to_die();
void awake(bool prepare_to_die);
inline const char* enter_cond(pthread_cond_t *cond, pthread_mutex_t* mutex,
const char* msg)
{
......
sql/sql_lex.h
View file @ 6291b7b5
......@@ -94,7 +94,6 @@ typedef struct st_lex_master_info
{
char* host, *user, *password,*log_file_name;
uint port, connect_retry;
ulong last_log_seq;
ulonglong pos;
ulong server_id;
} LEX_MASTER_INFO;
......
sql/sql_parse.cc
View file @ 6291b7b5
......@@ -1220,14 +1220,18 @@ mysql_execute_command(void)
{
if (check_access(thd, PROCESS_ACL, any_db))
goto error;
res = change_master(thd);
LOCK_ACTIVE_MI;
res = change_master(thd,active_mi);
UNLOCK_ACTIVE_MI;
break;
}
case SQLCOM_SHOW_SLAVE_STAT:
{
if (check_process_priv(thd))
goto error;
res = show_master_info(thd);
LOCK_ACTIVE_MI;
res = show_master_info(thd,active_mi);
UNLOCK_ACTIVE_MI;
break;
}
case SQLCOM_SHOW_MASTER_STAT:
......@@ -1245,7 +1249,7 @@ mysql_execute_command(void)
break;
case SQLCOM_LOAD_MASTER_TABLE:
{
if (!tables->db)
tables->db=thd->db;
if (check_access(thd,CREATE_ACL,tables->db,&tables->grant.privilege))
......@@ -1265,12 +1269,16 @@ mysql_execute_command(void)
net_printf(&thd->net,ER_WRONG_TABLE_NAME,tables->name);
break;
}
if (fetch_nx_table(thd, tables->db, tables->real_name, &glob_mi, 0))
break; // fetch_nx_table did send the error to the client
LOCK_ACTIVE_MI;
// fetch_master_table will send the error to the client on failure
if (!fetch_master_table(thd, tables->db, tables->real_name,
active_mi, 0))
{
send_ok(&thd->net);
}
UNLOCK_ACTIVE_MI;
break;
}
case SQLCOM_CREATE_TABLE:
if (!tables->db)
tables->db=thd->db;
......@@ -1368,12 +1376,19 @@ mysql_execute_command(void)
break;
case SQLCOM_SLAVE_START:
start_slave(thd);
{
LOCK_ACTIVE_MI;
start_slave(thd,active_mi,1 /* net report*/);
UNLOCK_ACTIVE_MI;
break;
}
case SQLCOM_SLAVE_STOP:
stop_slave(thd);
{
LOCK_ACTIVE_MI;
stop_slave(thd,active_mi,1/* net report*/);
UNLOCK_ACTIVE_MI;
break;
}
case SQLCOM_ALTER_TABLE:
#if defined(DONT_ALLOW_SHOW_COMMANDS)
send_error(&thd->net,ER_NOT_ALLOWED_COMMAND); /* purecov: inspected */
......@@ -2967,6 +2982,7 @@ bool reload_acl_and_cache(THD *thd, uint options, TABLE_LIST *tables)
bool result=0;
select_errors=0; /* Write if more errors */
// TODO: figure out what's up with the commented out line below
// mysql_log.flush(); // Flush log
if (options & REFRESH_GRANT)
{
......@@ -2998,10 +3014,15 @@ bool reload_acl_and_cache(THD *thd, uint options, TABLE_LIST *tables)
if (options & REFRESH_THREADS)
flush_thread_cache();
if (options & REFRESH_MASTER)
reset_master();
if (reset_master(thd))
result=1;
if (options & REFRESH_SLAVE)
reset_slave();
{
LOCK_ACTIVE_MI;
if (reset_slave(active_mi))
result=1;
UNLOCK_ACTIVE_MI;
}
return result;
}
......@@ -3019,7 +3040,7 @@ void kill_one_thread(THD *thd, ulong id)
if ((thd->master_access & PROCESS_ACL) ||
!strcmp(thd->user,tmp->user))
{
tmp->prepare_to_die();
tmp->awake(1 /*prepare to die*/);
error=0;
}
else
......
sql/sql_repl.cc
View file @ 6291b7b5
......@@ -23,9 +23,9 @@
#include "mini_client.h"
#include <thr_alarm.h>
#include <my_dir.h>
#include <assert.h>
extern const char* any_db;
extern pthread_handler_decl(handle_slave,arg);
#ifndef DBUG_OFF
int max_binlog_dump_events = 0; // unlimited
......@@ -33,6 +33,26 @@ bool opt_sporadic_binlog_dump_fail = 0;
static int binlog_dump_count = 0;
#endif
int check_binlog_magic(IO_CACHE* log, const char** errmsg)
{
char magic[4];
DBUG_ASSERT(my_b_tell(log) == 0);
if (my_b_read(log, (byte*) magic, sizeof(magic)))
{
*errmsg = "I/O error reading the header from the binary log";
sql_print_error("%s, errno=%d, io cache code=%d", *errmsg, my_errno,
log->error);
return 1;
}
if (memcmp(magic, BINLOG_MAGIC, sizeof(magic)))
{
*errmsg = "Binlog has bad magic number; It's not a binary log file that can be used by this version of MySQL";
return 1;
}
return 0;
}
static int fake_rotate_event(NET* net, String* packet, char* log_file_name,
const char**errmsg)
{
......@@ -46,7 +66,10 @@ static int fake_rotate_event(NET* net, String* packet, char* log_file_name,
int4store(header + SERVER_ID_OFFSET, server_id);
int4store(header + EVENT_LEN_OFFSET, event_len);
int2store(header + FLAGS_OFFSET, 0);
int4store(header + LOG_SEQ_OFFSET, 0);
// TODO: check what problems this may cause and fix them
int4store(header + LOG_POS_OFFSET, 0);
packet->append(header, sizeof(header));
/* We need to split the next statement because of problem with cxx */
int4store(buf,4); // tell slave to skip magic number
......@@ -133,7 +156,6 @@ File open_binlog(IO_CACHE *log, const char *log_file_name,
const char **errmsg)
{
File file;
char magic[4];
if ((file = my_open(log_file_name, O_RDONLY | O_BINARY, MYF(MY_WME))) < 0 ||
init_io_cache(log, file, IO_SIZE*2, READ_CACHE, 0, 0,
......@@ -142,19 +164,8 @@ File open_binlog(IO_CACHE *log, const char *log_file_name,
*errmsg = "Could not open log file"; // This will not be sent
goto err;
}
if (my_b_read(log, (byte*) magic, sizeof(magic)))
{
*errmsg = "I/O error reading the header from the binary log";
sql_print_error("%s, errno=%d, io cache code=%d", *errmsg, my_errno,
log->error);
goto err;
}
if (memcmp(magic, BINLOG_MAGIC, sizeof(magic)))
{
*errmsg = "Binlog has bad magic number; It's not a binary log file that can be used by this version of MySQL";
if (check_binlog_magic(log,errmsg))
goto err;
}
return file;
err:
......@@ -366,7 +377,8 @@ impossible position";
packet->length(0);
packet->append("\0",1);
}
// TODO: now that we are logging the offset, check to make sure
// the recorded offset and the actual match
if (error != LOG_READ_EOF)
{
switch(error) {
......@@ -410,13 +422,6 @@ impossible position";
// to signal us
{
log.error=0;
// tell the kill thread how to wake us up
thd->mysys_var->current_mutex = log_lock;
thd->mysys_var->current_cond = &COND_binlog_update;
const char* proc_info = thd->proc_info;
thd->proc_info = "Slave connection: waiting for binlog update";
bool read_packet = 0, fatal_error = 0;
#ifndef DBUG_OFF
......@@ -431,31 +436,29 @@ impossible position";
// no one will update the log while we are reading
// now, but we'll be quick and just read one record
pthread_mutex_lock(log_lock);
switch (Log_event::read_log_event(&log, packet, (pthread_mutex_t*) 0))
switch (Log_event::read_log_event(&log, packet, (pthread_mutex_t*)0))
{
case 0:
pthread_mutex_unlock(log_lock);
read_packet = 1;
// we read successfully, so we'll need to send it to the
// slave
break;
case LOG_READ_EOF:
DBUG_PRINT("wait",("waiting for data on binary log"));
DBUG_PRINT("wait",("waiting for data in binary log"));
// wait_for_update unlocks the log lock - needed to avoid race
if (!thd->killed)
pthread_cond_wait(&COND_binlog_update, log_lock);
mysql_bin_log.wait_for_update(thd);
else
pthread_mutex_unlock(log_lock);
DBUG_PRINT("wait",("binary log received update"));
break;
default:
pthread_mutex_unlock(log_lock);
fatal_error = 1;
break;
}
pthread_mutex_unlock(log_lock);
pthread_mutex_lock(&thd->mysys_var->mutex);
thd->mysys_var->current_mutex= 0;
thd->mysys_var->current_cond= 0;
thd->proc_info= proc_info;
pthread_mutex_unlock(&thd->mysys_var->mutex);
if (read_packet)
{
......@@ -548,39 +551,37 @@ impossible position";
DBUG_VOID_RETURN;
}
int start_slave(THD* thd , bool net_report)
int start_slave(THD* thd , MASTER_INFO* mi, bool net_report)
{
int slave_errno = 0;
if (!thd) thd = current_thd;
NET* net = &thd->net;
int thread_mask;
if (check_access(thd, PROCESS_ACL, any_db))
return 1;
pthread_mutex_lock(&LOCK_slave);
if (!slave_running)
{
if (init_master_info(&glob_mi))
slave_errno = ER_MASTER_INFO;
else if (server_id_supplied && *glob_mi.host)
{
pthread_t hThread;
if (pthread_create(&hThread, &connection_attrib, handle_slave, 0))
{
slave_errno = ER_SLAVE_THREAD;
}
while (!slave_running) // slave might already be running by now
pthread_cond_wait(&COND_slave_start, &LOCK_slave);
}
lock_slave_threads(mi); // this allows us to cleanly read slave_running
init_thread_mask(&thread_mask,mi,1 /* inverse */);
if (thread_mask)
{
if (server_id_supplied && (!mi->inited || (mi->inited && *mi->host)))
slave_errno = start_slave_threads(0 /*no mutex */,
1 /* wait for start */,
mi,
master_info_file,relay_log_info_file,
thread_mask);
else
slave_errno = ER_BAD_SLAVE;
}
else
slave_errno = ER_SLAVE_MUST_STOP;
pthread_mutex_unlock(&LOCK_slave);
unlock_slave_threads(mi);
if (slave_errno)
{
if (net_report) send_error(net, slave_errno);
if (net_report)
send_error(net, slave_errno);
return 1;
}
else if (net_report)
......@@ -589,8 +590,7 @@ int start_slave(THD* thd , bool net_report)
return 0;
}
int stop_slave(THD* thd, bool net_report )
int stop_slave(THD* thd, MASTER_INFO* mi, bool net_report )
{
int slave_errno = 0;
if (!thd) thd = current_thd;
......@@ -598,43 +598,14 @@ int stop_slave(THD* thd, bool net_report )
if (check_access(thd, PROCESS_ACL, any_db))
return 1;
pthread_mutex_lock(&LOCK_slave);
if (slave_running)
{
abort_slave = 1;
KICK_SLAVE;
// do not abort the slave in the middle of a query, so we do not set
// thd->killed for the slave thread
thd->proc_info = "waiting for slave to die";
while(slave_running)
{
/* there is a small chance that slave thread might miss the first
alarm. To protect againts it, resend the signal until it reacts
*/
struct timespec abstime;
#ifdef HAVE_TIMESPEC_TS_SEC
abstime.ts_sec=time(NULL)+2;
abstime.ts_nsec=0;
#elif defined(__WIN__)
abstime.tv_sec=time((time_t*) 0)+2;
abstime.tv_nsec=0;
#else
struct timeval tv;
gettimeofday(&tv,0);
abstime.tv_sec=tv.tv_sec+2;
abstime.tv_nsec=tv.tv_usec*1000;
#endif
pthread_cond_timedwait(&COND_slave_stopped, &LOCK_slave, &abstime);
if (slave_running)
KICK_SLAVE;
}
}
else
slave_errno = ER_SLAVE_NOT_RUNNING;
pthread_mutex_unlock(&LOCK_slave);
thd->proc_info = "Killing slave";
int thread_mask;
lock_slave_threads(mi);
init_thread_mask(&thread_mask,mi,0 /* not inverse*/);
slave_errno = (thread_mask) ?
terminate_slave_threads(mi,thread_mask,
1 /*skip lock */) : ER_SLAVE_NOT_RUNNING;
unlock_slave_threads(mi);
thd->proc_info = 0;
if (slave_errno)
......@@ -649,31 +620,43 @@ int stop_slave(THD* thd, bool net_report )
return 0;
}
void reset_slave()
int reset_slave(MASTER_INFO* mi)
{
MY_STAT stat_area;
char fname[FN_REFLEN];
bool slave_was_running ;
int restart_thread_mask = 0,error=0;
const char* errmsg=0;
pthread_mutex_lock(&LOCK_slave);
if ((slave_was_running = slave_running))
{
pthread_mutex_unlock(&LOCK_slave);
stop_slave(0,0);
}
else
pthread_mutex_unlock(&LOCK_slave);
lock_slave_threads(mi);
init_thread_mask(&restart_thread_mask,mi,0 /* not inverse */);
if ((error=terminate_slave_threads(mi,restart_thread_mask,1 /*skip lock*/))
|| (error=purge_relay_logs(&mi->rli,1 /*just reset*/,&errmsg)))
goto err;
end_master_info(&glob_mi);
end_master_info(mi);
fn_format(fname, master_info_file, mysql_data_home, "", 4+32);
if (my_stat(fname, &stat_area, MYF(0)) && my_delete(fname, MYF(MY_WME)))
return;
if (slave_was_running)
start_slave(0,0);
{
error=1;
goto err;
}
fn_format(fname, relay_log_info_file, mysql_data_home, "", 4+32);
if (my_stat(fname, &stat_area, MYF(0)) && my_delete(fname, MYF(MY_WME)))
{
error=1;
goto err;
}
if (restart_thread_mask)
error=start_slave_threads(0 /* mutex not needed*/,
1 /* wait for start*/,
mi,master_info_file,relay_log_info_file,
restart_thread_mask);
// TODO: fix error messages so they get to the client
err:
unlock_slave_threads(mi);
return error;
}
void kill_zombie_dump_threads(uint32 slave_server_id)
{
pthread_mutex_lock(&LOCK_thread_count);
......@@ -692,119 +675,114 @@ void kill_zombie_dump_threads(uint32 slave_server_id)
make safe_mutex complain and abort.
We just to do kill the thread ourselves.
*/
thr_alarm_kill(tmp->real_id);
tmp->killed = 1;
tmp->mysys_var->abort = 1;
pthread_mutex_lock(&tmp->mysys_var->mutex);
if (tmp->mysys_var->current_cond)
{
pthread_mutex_lock(tmp->mysys_var->current_mutex);
pthread_cond_broadcast(tmp->mysys_var->current_cond);
pthread_mutex_unlock(tmp->mysys_var->current_mutex);
}
pthread_mutex_unlock(&tmp->mysys_var->mutex);
tmp->awake(1/*prepare to die*/);
}
}
pthread_mutex_unlock(&LOCK_thread_count);
}
int change_master(THD* thd)
int change_master(THD* thd, MASTER_INFO* mi)
{
bool slave_was_running;
int error=0,restart_thread_mask;
const char* errmsg=0;
// kill slave thread
pthread_mutex_lock(&LOCK_slave);
if ((slave_was_running = slave_running))
{
abort_slave = 1;
KICK_SLAVE;
thd->proc_info = "waiting for slave to die";
while (slave_running)
pthread_cond_wait(&COND_slave_stopped, &LOCK_slave); // wait until done
lock_slave_threads(mi);
init_thread_mask(&restart_thread_mask,mi,0 /*not inverse*/);
if (restart_thread_mask &&
(error=terminate_slave_threads(mi,
restart_thread_mask,
1 /*skip lock*/)))
{
send_error(&thd->net,error);
unlock_slave_threads(mi);
return 1;
}
pthread_mutex_unlock(&LOCK_slave);
thd->proc_info = "changing master";
LEX_MASTER_INFO* lex_mi = &thd->lex.mi;
if (init_master_info(&glob_mi))
// TODO: see if needs re-write
if (init_master_info(mi,master_info_file,relay_log_info_file))
{
send_error(&thd->net, 0, "Could not initialize master info");
unlock_slave_threads(mi);
return 1;
}
pthread_mutex_lock(&glob_mi.lock);
pthread_mutex_lock(&mi->data_lock);
if ((lex_mi->host || lex_mi->port) && !lex_mi->log_file_name && !lex_mi->pos)
{
// if we change host or port, we must reset the postion
glob_mi.log_file_name[0] = 0;
glob_mi.pos = 4; // skip magic number
glob_mi.pending = 0;
mi->master_log_name[0] = 0;
mi->master_log_pos = 4; // skip magic number
mi->rli.pending = 0;
}
if (lex_mi->log_file_name)
strmake(glob_mi.log_file_name, lex_mi->log_file_name,
sizeof(glob_mi.log_file_name));
strmake(mi->master_log_name, lex_mi->log_file_name,
sizeof(mi->master_log_name));
if (lex_mi->pos)
{
glob_mi.pos = lex_mi->pos;
glob_mi.pending = 0;
mi->master_log_pos = lex_mi->pos;
mi->rli.pending = 0;
}
if (lex_mi->host)
strmake(glob_mi.host, lex_mi->host, sizeof(glob_mi.host));
strmake(mi->host, lex_mi->host, sizeof(mi->host));
if (lex_mi->user)
strmake(glob_mi.user, lex_mi->user, sizeof(glob_mi.user));
strmake(mi->user, lex_mi->user, sizeof(mi->user));
if (lex_mi->password)
strmake(glob_mi.password, lex_mi->password, sizeof(glob_mi.password));
strmake(mi->password, lex_mi->password, sizeof(mi->password));
if (lex_mi->port)
glob_mi.port = lex_mi->port;
mi->port = lex_mi->port;
if (lex_mi->connect_retry)
glob_mi.connect_retry = lex_mi->connect_retry;
mi->connect_retry = lex_mi->connect_retry;
flush_master_info(mi);
pthread_mutex_unlock(&mi->data_lock);
thd->proc_info="purging old relay logs";
if (purge_relay_logs(&mi->rli,0 /* not only reset, but also reinit*/,
&errmsg))
{
send_error(&thd->net, 0, "Failed purging old relay logs");
unlock_slave_threads(mi);
return 1;
}
pthread_mutex_lock(&mi->rli.data_lock);
mi->rli.master_log_pos = mi->master_log_pos;
strnmov(mi->rli.master_log_name,mi->master_log_name,
sizeof(mi->rli.master_log_name));
if (!mi->rli.master_log_name[0]) // uninitialized case
mi->rli.master_log_pos=0;
pthread_cond_broadcast(&mi->rli.data_cond);
pthread_mutex_unlock(&mi->rli.data_lock);
flush_master_info(&glob_mi);
pthread_mutex_unlock(&glob_mi.lock);
thd->proc_info = "starting slave";
if (slave_was_running)
start_slave(0,0);
if (restart_thread_mask)
error=start_slave_threads(0 /* mutex not needed*/,
1 /* wait for start*/,
mi,master_info_file,relay_log_info_file,
restart_thread_mask);
err:
unlock_slave_threads(mi);
thd->proc_info = 0;
if (error)
send_error(&thd->net,error);
else
send_ok(&thd->net);
return 0;
}
void reset_master()
int reset_master(THD* thd)
{
if (!mysql_bin_log.is_open())
{
my_error(ER_FLUSH_MASTER_BINLOG_CLOSED, MYF(ME_BELL+ME_WAITTANG));
return;
}
LOG_INFO linfo;
pthread_mutex_t* log_lock = mysql_bin_log.get_log_lock();
pthread_mutex_lock(log_lock);
if (mysql_bin_log.find_first_log(&linfo, ""))
{
pthread_mutex_unlock(log_lock);
return;
}
for(;;)
{
my_delete(linfo.log_file_name, MYF(MY_WME));
if (mysql_bin_log.find_next_log(&linfo))
break;
return 1;
}
mysql_bin_log.close(1); // exiting close
my_delete(mysql_bin_log.get_index_fname(), MYF(MY_WME));
mysql_bin_log.set_need_start_event();
mysql_bin_log.open(opt_bin_logname,LOG_BIN);
pthread_mutex_unlock(log_lock);
return mysql_bin_log.reset_logs(thd);
}
int cmp_master_pos(const char* log_file_name1, ulonglong log_pos1,
const char* log_file_name2, ulonglong log_pos2)
{
......@@ -891,6 +869,7 @@ int show_binlog_events(THD* thd)
if (event_count < limit_end && log.error)
{
errmsg = "Wrong offset or I/O error";
pthread_mutex_unlock(mysql_bin_log.get_log_lock());
goto err;
}
......
sql/sql_repl.h
View file @ 6291b7b5
......@@ -26,30 +26,26 @@ extern int max_binlog_dump_events;
extern bool opt_sporadic_binlog_dump_fail;
#endif
#ifdef SIGNAL_WITH_VIO_CLOSE
#define KICK_SLAVE { slave_thd->close_active_vio(); \
thr_alarm_kill(slave_real_id); }
#else
#define KICK_SLAVE thr_alarm_kill(slave_real_id);
#endif
#define KICK_SLAVE(thd) thd->awake(0 /* do not prepare to die*/);
File open_binlog(IO_CACHE *log, const char *log_file_name,
const char **errmsg);
int start_slave(THD* thd = 0, bool net_report = 1);
int stop_slave(THD* thd = 0, bool net_report = 1);
int change_master(THD* thd);
int start_slave(THD* thd, MASTER_INFO* mi, bool net_report);
int stop_slave(THD* thd, MASTER_INFO* mi, bool net_report);
int change_master(THD* thd, MASTER_INFO* mi);
int show_binlog_events(THD* thd);
int cmp_master_pos(const char* log_file_name1, ulonglong log_pos1,
const char* log_file_name2, ulonglong log_pos2);
void reset_slave();
void reset_master();
int reset_slave(MASTER_INFO* mi);
int reset_master(THD* thd);
int purge_master_logs(THD* thd, const char* to_log);
bool log_in_use(const char* log_name);
void adjust_linfo_offsets(my_off_t purge_offset);
int show_binlogs(THD* thd);
extern int init_master_info(MASTER_INFO* mi);
void kill_zombie_dump_threads(uint32 slave_server_id);
int check_binlog_magic(IO_CACHE* log, const char** errmsg);
typedef struct st_load_file_info
{
......
sql/sql_show.cc
View file @ 6291b7b5
......@@ -1168,6 +1168,15 @@ int mysqld_show(THD *thd, const char *wild, show_var_st *variables)
case SHOW_RPL_STATUS:
net_store_data(&packet2, rpl_status_type[(int)rpl_status]);
break;
case SHOW_SLAVE_RUNNING:
{
LOCK_ACTIVE_MI;
net_store_data(&packet2, (active_mi->slave_running &&
active_mi->rli.slave_running)
? "ON" : "OFF");
UNLOCK_ACTIVE_MI;
break;
}
case SHOW_OPENTABLES:
net_store_data(&packet2,(uint32) cached_tables());
break;
......
sql/sql_yacc.yy
View file @ 6291b7b5
......@@ -2453,15 +2453,14 @@ show_param:
YYABORT;
}
| NEW_SYM MASTER_SYM FOR_SYM SLAVE WITH MASTER_LOG_FILE_SYM EQ
TEXT_STRING AND MASTER_LOG_POS_SYM EQ ulonglong_num AND
MASTER_LOG_SEQ_SYM EQ ULONG_NUM AND MASTER_SERVER_ID_SYM EQ
TEXT_STRING AND MASTER_LOG_POS_SYM EQ ulonglong_num
AND MASTER_SERVER_ID_SYM EQ
ULONG_NUM
{
Lex->sql_command = SQLCOM_SHOW_NEW_MASTER;
Lex->mi.log_file_name = $8.str;
Lex->mi.pos = $12;
Lex->mi.last_log_seq = $16;
Lex->mi.server_id = $20;
Lex->mi.server_id = $16;
}
| MASTER_SYM LOGS_SYM
{
......@@ -3083,12 +3082,18 @@ option_value:
}
| SQL_SLAVE_SKIP_COUNTER equal ULONG_NUM
{
pthread_mutex_lock(&LOCK_slave);
if (slave_running)
LOCK_ACTIVE_MI;
pthread_mutex_lock(&active_mi->rli.run_lock);
if (active_mi->rli.slave_running)
send_error(&current_thd->net, ER_SLAVE_MUST_STOP);
else
slave_skip_counter = $3;
pthread_mutex_unlock(&LOCK_slave);
{
pthread_mutex_lock(&active_mi->rli.data_lock);
active_mi->rli.slave_skip_counter = $3;
pthread_mutex_unlock(&active_mi->rli.data_lock);
}
pthread_mutex_unlock(&active_mi->rli.run_lock);
UNLOCK_ACTIVE_MI;
}
| ident equal DEFAULT
{
......
sql/stacktrace.c
View file @ 6291b7b5
......@@ -123,7 +123,7 @@ terribly wrong...\n");
}
#endif /* __alpha__ */
if (!stack_bottom)
if (!stack_bottom || (gptr) stack_bottom > (gptr) &fp)
{
ulong tmp= min(0x10000,thread_stack);
/* Assume that the stack starts at the previous even 65K */
......
sql/structs.h
View file @ 6291b7b5
......@@ -140,7 +140,7 @@ enum SHOW_TYPE { SHOW_LONG,SHOW_CHAR,SHOW_INT,SHOW_CHAR_PTR,SHOW_BOOL,
,SHOW_SSL_CTX_SESS_TIMEOUTS, SHOW_SSL_CTX_SESS_CACHE_FULL
,SHOW_SSL_GET_CIPHER_LIST
#endif /* HAVE_OPENSSL */
,SHOW_RPL_STATUS
,SHOW_RPL_STATUS, SHOW_SLAVE_RUNNING
};
enum SHOW_COMP_OPTION { SHOW_OPTION_YES, SHOW_OPTION_NO, SHOW_OPTION_DISABLED};
......
support-files/build-tags 0 → 100755
View file @ 6291b7b5
#! /bin/sh
rm -f TAGS
filter='\.cc$\|\.c$\|\.h$\|\.yy$'
files=`bk -r sfiles -gU | grep $filter `
for f in $files ;
do
etags -o TAGS --append $f
done
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