Followup to r2935: add the Windows Delay Loader stuff for the MySQL
variable that we are accessing. If someday we have another solution for
Bug#40360 Binlog related errors with binlog off
then this should also be reverted.

Fix "Bug#40360 Binlog related errors with binlog off" in InnoDB code in order
to have a Bug#40360-free InnoDB Plugin 1.0.2.

The fix does check whether binary logging is enabled in MySQL by accessing the
opt_bin_log global variable that is defined in sql/mysqld.cc.

In case MySQL does develop another solution to this via Bug#40360 then we can
revert this patch (except the mysql-tests).

The windows-plugin part of this fix will be committed as a separate commit to
ease eventual merge into branches/5.1 [note from the future: the separate
commit went into r2936].

Approved by:	Marko (https://svn.innodb.com/rb/r/39)

Add 2 ChangeLog entries for the 2 bugfixes that were merged from branches/5.1.

except r2924, which was merged from branches/zip r2866 to branches/5.1
and except r2879 which was merged separately by Calvin:

  ------------------------------------------------------------------------
  r2902 | vasil | 2008-10-28 12:10:25 +0200 (Tue, 28 Oct 2008) | 10 lines

  branches/5.1:

  Fix Bug#38189 innodb_stats_on_metadata missing

  Make the variable innodb_stats_on_metadata visible to the users and
  also settable at runtime. Previously it was only "visible" as a command
  line startup option to mysqld.

  Approved by:    Marko (https://svn.innodb.com/rb/r/36)
  ------------------------------------------------------------------------
  r2929 | marko | 2008-10-29 21:26:14 +0200 (Wed, 29 Oct 2008) | 13 lines

  branches/5.1: dtype_get_sql_null_size(): return the correct storage
  size of a SQL NULL column. (Bug #40369)

  When MySQL Bug #20877 was fixed in r834, this function was
  accidentally modified to return 0 or 1. Apparently, the only impact of
  this bug is that fixed-length columns cannot be updated in-place from
  or to SQL NULL, even in ROW_FORMAT=REDUNDANT.  After this fix,
  fixed-length columns in ROW_FORMAT=REDUNDANT will have a constant
  storage size as they should, no matter if NULL or non-NULL.  The bug
  caused fixed-length NULL columns to occupy 1 byte.

  rb://37 approved by Heikki over IM.
  ------------------------------------------------------------------------

Approved by: Heikki, over IM

not be compiled as weak global symbols.  These functions must not be
redirected to the built-in InnoDB.

to work with 5.1.29-rc.

In 5.1.29, the following function names are changed:
  _hash_init
  hash_free
  hash_search
  hash_delete

changed to
  _my_hash_init
  my_hash_free
  my_hash_search
  my_hash_delete

Approved by:	Marko (on IM)

during run-time.

Implement wrapper functions in the plugin. The plugin will get the
function entries from mysqld.exe during the init, and invoke the
corresponding functions (in mysqld.exe). The list of functions are:

	_db_pargs_
	_db_doprnt_
	_db_enter_
	_db_return_
	_db_dump_

rb://38

Approved by:	Marko

initialized. Move the check into for().

even when the variable is a global variable in the built-in InnoDB.

ChangeLog:

add entry for the Windows plugin.

Spotted by Sunny.

when INNODB_DYNAMIC_PLUGIN is specified.

The changes are:

CMakeLists.txt: add project ha_innodb for dynamic plugin on Windows.
ha_innodb depends on project mysqld.

ha_innodb.def: a new file with standard exports for a dynamic plugin.

Two new files will be added:
 * sql/mysqld.def:	.def file for 32-bit compiler
 * sql/mysqld_x64.def:	.def file for x64 compiler

It is also required to apply a patch to the MySQL source tree. The 
patch is described in win-plugin/README:

win-plugin/win-plugin.diff - a patch to be applied to MySQL source
tree. When applied, the following files will be modified:
 * CMakeLists.txt:	add INNODB_DYNAMIC_PLUGIN and _USE_32BIT_TIME_T
 * sql/CMakeLists.txt:	add mysqld.def or mysqld_x64.def for mysqld
 * win/configure.js:	add INNODB_DYNAMIC_PLUGIN
 * win/build-vs71.bat:	provide an option to specify CMAKE_BUILD_TYPE
 * win/build-vs8.bat:	provide an option to specify CMAKE_BUILD_TYPE
 * win/build-vs8_x64.bat: provide an option to specify CMAKE_BUILD_TYPE

on Windows, which includes:

 * Load mysqld.map and insert all symbol/address pairs into hash for
   quick access
 * Resolves all external data variables. The delayloading mechanism
   in MSVC does not support automatic imports of data variables.
   A workaround is to explicitly handle the data import using the delay
   loader during the initialization of the plugin.
 * Resolves all external functions during run-time, by implementing
   the delayed loading helper function delayLoadHelper2, which is
   called by run-time as well as HrLoadAllImportsForDll. 

The delay loader reuses the hash implementation in InnoDB. The normal
hash_create (in hash0hash.c) creates hash tables in buffer pool. But
the delay loader is invoked before the engine is initialized, and 
buffer pools are not ready yet. Instead, the delay loader has its own
implementation of hash_create() and hash_table_free(), called
wdl_hash_create() and wdl_hash_table_free().

This patch should be used with other two patches in order to build
a dynamically linked plugin on Windows:
 * patch for tmpfile functions (r2886)
 * patch for "build" files (to be committed)
 
The list of file changed:

handler/handler0vars.h: new file, defines a list of external data
variables (no external functions).

handler/win_delay_loader.cc: new file, the implementation of the delay
loader for Windows plugin.

handler/ha_innodb.cc: add a header file, and changes for copying the
system variables.

handler/handler0alter.cc: add a header file

handler/i_s.cc: add a header file

rb://27

Reviewed by:	Sunny, Marko
Approved by:	Sunny

not cross DLL/EXE boundaries on Windows. In builtin InnoDB, it makes
call to MySQL server for creating tmp files. innobase_mysql_tmpfile
is now rewritten for the plugin. 

rb://5

Approved by:	Marko

ChangeLog:

Add entry for the fix of Bug#19424 InnoDB: Possibly a memory overrun of
the buffer being freed (64-bit Visual C)

overrun of the buffer being freed with 64-bit Microsoft Visual C++.

The changed file:

CMakeLists.txt: Removing Win64 compiler optimizations for all 
innodb/mem/* files.

Adjust mysql-test/patches/innodb-index.diff after the change to
mysql-test/innodb-index.(test|result) in r2870.

Remove a statement that causes the innodb-index test to fail.

The change in behavior was introduced in MySQL BZR-r2738.

Suggested by:	Marko

White space cleanup in ChangeLog

cannot be restored, do not complain if the tablespace does not exist.
This fixes Issue #88.

ibuf_get_volume_buffered(): Declare with static linkage.
This function is private to ibuf0ibuf.c.

btr_cur_pessimistic_delete(): Use the cached result of
btr_cur_get_index(cursor).

trx_sys_file_format_max_upgrade(): Rename from
trx_sys_file_format_max_update().  Improve the documentation.  Add a
const qualifier to the parameter "name".  Replace the parameter
"flags" with "format_id", because this function should deal with file
format identifiers, not with table flags.

trx_sys_file_format_max_write(), trx_sys_file_format_max_set(): Add a
const qualifier to the parameter "name".

ha_innodb.cc: Correct the spelling in some comments: "side effect".
Remove redundant prototypes for some static callback functions.

innodb_file_format_name_update(), innodb_file_format_check_update():
Correct the function signature.  Use appropriate pointer type conversions.

MYSQL_SYSVAR_STR(file_format), MYSQL_SYSVAR_STR(file_format_check):
Remove the type conversions from the callback function pointers.  When
the function signatures match, no type conversion is needed.  The type
conversions would only prevent compilation warnings for any mismatch.

Approved by Sunny in rb://25.

Update the ChangeLog

Merge revisions 2852:2854 from branches/5.1:

  ------------------------------------------------------------------------
  r2854 | sunny | 2008-10-23 08:30:32 +0300 (Thu, 23 Oct 2008) | 13 lines
  Changed paths:
     M /branches/5.1/dict/dict0dict.c
     M /branches/5.1/dict/dict0mem.c
     M /branches/5.1/handler/ha_innodb.cc
     M /branches/5.1/handler/ha_innodb.h
     M /branches/5.1/include/dict0dict.h
     M /branches/5.1/include/dict0mem.h
     M /branches/5.1/row/row0mysql.c
  
  branches/5.1: Backport changes from branches/zip r2725
  
  Simplify the autoinc initialization code. This removes the
  non-determinism related to reading the table's autoinc value for the first
  time. This change has also reduced the sizeof dict_table_t by sizeof(ibool)
  bytes because we don't need the dict_table_t::autoinc_inited field anymore.
  
  Bug#39830 Table autoinc value not updated on first insert.
  Bug#35498 Cannot get table test/table1 auto-inccounter value in ::info
  Bug#36411 Failed to read auto-increment value from storage engine" in 5.1.24 auto-inc
  rb://16
  
  
  ------------------------------------------------------------------------

Merge revisions 2837:2852 from branches/5.1:

  ------------------------------------------------------------------------
  r2849 | sunny | 2008-10-22 12:01:18 +0300 (Wed, 22 Oct 2008) | 8 lines
  Changed paths:
     M /branches/5.1/handler/ha_innodb.cc
     M /branches/5.1/include/row0mysql.h
     M /branches/5.1/row/row0mysql.c
  
  branches/5.1: Return the actual error code encountered when allocating
  a new autoinc value. The change in behavior (bug) was introduced in 5.1.22
  when we introduced the new AUTOINC locking model.
  
  rb://31
  
  Bug#40224 New AUTOINC changes mask reporting of deadlock/timeout errors
  
  ------------------------------------------------------------------------
  r2852 | sunny | 2008-10-23 01:42:24 +0300 (Thu, 23 Oct 2008) | 9 lines
  Changed paths:
     M /branches/5.1/handler/ha_innodb.cc
     M /branches/5.1/handler/ha_innodb.h
  
  branches/5.1: Backport r2724 from branches/zip
  
  Check column value against the col max value before updating the table's
  global autoinc counter value. This is part of simplifying the AUTOINC
  sub-system. We extract the type info from MySQL data structures at runtime.
  
  This fixes Bug#37788 InnoDB Plugin: AUTO_INCREMENT wrong for compressed tables
  
  
  ------------------------------------------------------------------------

page_cur is always positioned on block, the function parameter.

in the fix of Mantis issue #73.  With key_block_size=16, we will also
have to check the available space on the uncompressed page.
Otherwise, the clustered index record can be almost 16 kilobytes in
size, and the undo log record will not fit.

Merge 2744:2837 from branches/5.1 (skipping r2782 and r2826):

  ------------------------------------------------------------------------
  r2832 | vasil | 2008-10-21 10:08:30 +0300 (Tue, 21 Oct 2008) | 10 lines
  Changed paths:
     M /branches/5.1/handler/ha_innodb.cc
  
  branches/5.1:
  
  In ha_innobase::info():
  
  Replace sql_print_warning() which prints to mysqld error log with
  push_warning_printf() which sends the error message to the client.
  
  Suggested by:	Marko, Sunny, Michael
  Objected by:	Inaam
  
  ------------------------------------------------------------------------
  r2837 | vasil | 2008-10-21 12:07:44 +0300 (Tue, 21 Oct 2008) | 32 lines
  Changed paths:
     M /branches/5.1/mysql-test/innodb-semi-consistent.result
     M /branches/5.1/mysql-test/innodb-semi-consistent.test
     M /branches/5.1/mysql-test/innodb.result
     M /branches/5.1/mysql-test/innodb.test
  
  branches/5.1:
  
  Merge a change from MySQL (this fixes the failing innodb and
  innodb-semi-consistent tests):
  
    revno: 2757
    committer: Georgi Kodinov <kgeorge@mysql.com>
    branch nick: B39812-5.1-5.1.29-rc
    timestamp: Fri 2008-10-03 15:24:19 +0300
    message:
      Bug #39812: Make statement replication default for 5.1 (to match 5.0)
      
      Make STMT replication default for 5.1.
      Add a default of MIXED into the config files
      Fix the tests that needed MIXED replication mode.
    modified:
      mysql-test/include/mix1.inc
      mysql-test/r/innodb-semi-consistent.result
      mysql-test/r/innodb.result
      mysql-test/r/innodb_mysql.result
      mysql-test/r/tx_isolation_func.result
      mysql-test/t/innodb-semi-consistent.test
      mysql-test/t/innodb.test
      mysql-test/t/tx_isolation_func.test
      sql/mysqld.cc
      support-files/my-huge.cnf.sh
      support-files/my-innodb-heavy-4G.cnf.sh
      support-files/my-large.cnf.sh
      support-files/my-medium.cnf.sh
      support-files/my-small.cnf.sh
  
  
  ------------------------------------------------------------------------

acquiring and releasing ibuf_mutex.

Print the table name via ut_print_name() and add two spaces before InnoDB.

Suggested by:	Marko

Spotted by Sunny.

Fix Mantis issue#61:

In row_undo_ins_parse_undo_rec(): if we find that a table has no indexes
(dict_table_get_first_index() returns NULL) do not try to call
trx_undo_rec_get_row_ref() with a NULL pointer because that would lead to
a crash. Instead, print a warning and set node->table to NULL just like
it is done if the .ibd file is missing.

Approved by:	Heikki (via IM)

In ROW_FORMAT=DYNAMIC and ROW_FORMAT=COMPRESSED, column prefix indexes
require that prefixes of externally stored columns be written to the
undo log. This may make the undo log record bigger than the record on
the B-tree page.  The maximum size of an undo log record is the page
size.  That must be checked for, in dict_index_add_to_cache().

dict_index_add_to_cache(): Skip the undo log size check for REDUNDANT
and COMPACT tables. These tables store prefixes of externally stored
columns locally within the clustered index record.  There are no special
considerations for the undo log record size.

innodb-index.test: Ensure that the check exists for ROW_FORMAT=DYNAMIC,
but not for ROW_FORMAT=COMPACT.

This fixes issue #99.  rb://28 approved by Sunny.