keep bk happy

Docs/manual.texi

@@ -40712,6 +40712,11 @@ not yet 100 % confident in this code.
 @appendixsubsec Changes in release 3.23.32
 @itemize @bullet
 @item
+Fixed bug in @code{SHOW LOGS} when there wheren't any BDB logs.
+@item
+Fixed a timing problem in replication that could delay sending an update
+to the client until a new update was done.
+@item
 Don't convert field names when using @code{mysql_list_fields()}.  This is
 to keep this code compatible with @code{SHOW FIELDS}.
 @item

mysql-test/mysql-test-run.sh

@@ -239,7 +239,7 @@ SLAVE_MYSQLD=$MYSQLD #this can be changed later if we are doing gcov
 #--
 wait_for_server_start ()
  {
-   $MYSQL -e "select 1" --silent -w1 --host=127.0.0.1 --port=$1 \
+   $MYSQL --no-defaults -u $DBUSER -e "select 1" --silent -w1 --host=127.0.0.1 --port=$1 \
     >/dev/null
  }
 
@@ -492,7 +492,7 @@ mysql_restart () {
 
 mysql_loadstd () {
     
-    cp $STD_DATA/*.frm $STD_DATA/*.MRG $MASTER_MYDDIR/test  
+    # cp $STD_DATA/*.frm $STD_DATA/*.MRG $MASTER_MYDDIR/test  
     return 1
 }
 

sql/ha_berkeley.cc

@@ -253,15 +253,19 @@ int berkeley_show_logs(THD *thd)
   {
     DBUG_PRINT("error", ("log_archive failed (error %d)", error));
     db_env->err(db_env, error, "log_archive: DB_ARCH_ABS");
+    if (error== DB_NOTFOUND)
+      error=0;					// No log files
     goto err;
   }
-
+  /* Error is 0 here */
+  if (all_logs)
+  {
     for (a = all_logs, f = free_logs; *a; ++a)
     {
       packet->length(0);
       net_store_data(packet,*a);
       net_store_data(packet,"BDB");
-    if (*f && strcmp(*a, *f) == 0)
+      if (f && *f && strcmp(*a, *f) == 0)
       {
 	++f;
 	net_store_data(packet, SHOW_LOG_STATUS_FREE);
@@ -270,10 +274,12 @@ int berkeley_show_logs(THD *thd)
 	net_store_data(packet, SHOW_LOG_STATUS_INUSE);
 
       if (my_net_write(&thd->net,(char*) packet->ptr(),packet->length()))
+      {
+	error=1;
 	goto err;
       }
-  error=0;
-
+    }
+  }
 err:
   free_root(&show_logs_root,MYF(0));
   my_pthread_setspecific_ptr(THR_MALLOC,old_root);
@@ -1042,6 +1048,7 @@ int ha_berkeley::update_row(const byte * old_row, byte * new_row)
   ulong thd_options = table->in_use ? table->in_use->options : 0;
   bool primary_key_changed;
   DBUG_ENTER("update_row");
+  LINT_INIT(error);
 
   statistic_increment(ha_update_count,&LOCK_status);
   if (table->time_stamp)
@@ -1066,7 +1073,6 @@ int ha_berkeley::update_row(const byte * old_row, byte * new_row)
   }
 
   sub_trans = transaction;
-  LINT_INIT(error);
   for (uint retry=0 ; retry < berkeley_trans_retry ; retry++)
   {
     key_map changed_keys = 0;

sql/item_func.cc

@@ -1399,14 +1399,18 @@ longlong Item_master_pos_wait::val_int()
   String *log_name = args[0]->val_str(&value);
   int event_count;
   
-  if(thd->slave_thread || !log_name || !log_name->length())
+  null_value=0;
+  if (thd->slave_thread || !log_name || !log_name->length())
   {
     null_value = 1;
     return 0;
   }
   ulong pos = (ulong)args[1]->val_int();
-  if((event_count = glob_mi.wait_for_pos(thd, log_name, pos)) == -1)
-    null_value = 1;;
+  if ((event_count = glob_mi.wait_for_pos(thd, log_name, pos)) == -1)
+  {
+    null_value = 1;
+    event_count=0;
+  }
   return event_count;
 }
 

sql/mini_client.cc

@@ -298,9 +298,9 @@ static int mc_sock_connect(my_socket s, const struct sockaddr *name,
     return(-1);
 
   if (s_err)
-  {						/* getsockopt() could suceed */
+  {						// getsockopt() could succeed
     errno = s_err;
-    return(-1);					/* but return an error... */
+    return(-1);					// but return an error...
   }
   return(0);					/* It's all good! */
 #endif
@@ -403,8 +403,8 @@ my_bool STDCALL mc_mysql_reconnect(MYSQL *mysql)
 
 
 int STDCALL
-mc_simple_command(MYSQL *mysql,enum enum_server_command command, const char *arg,
-	       uint length, my_bool skipp_check)
+mc_simple_command(MYSQL *mysql,enum enum_server_command command,
+		  const char *arg, uint length, my_bool skipp_check)
 {
   NET *net= &mysql->net;
   int result= -1;

sql/slave.cc

@@ -102,35 +102,37 @@ static TABLE_RULE_ENT* find_wild(DYNAMIC_ARRAY *a, const char* key, int len)
 
 int tables_ok(THD* thd, TABLE_LIST* tables)
 {
-  for(; tables; tables = tables->next)
+  for (; tables; tables = tables->next)
   {
-      if(!tables->updating) 
+    if (!tables->updating) 
       continue;
     char hash_key[2*NAME_LEN+2];
     char* p;
     p = strmov(hash_key, tables->db ? tables->db : thd->db);
     *p++ = '.';
     uint len = strmov(p, tables->real_name) - hash_key ;
-      if(do_table_inited) // if there are any do's
+    if (do_table_inited) // if there are any do's
     {
-	  if(hash_search(&replicate_do_table, (byte*) hash_key, len))
+      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 do's
     {
-	  if(hash_search(&replicate_ignore_table, (byte*) hash_key, len))
+      if (hash_search(&replicate_ignore_table, (byte*) hash_key, len))
 	return 0; 
     }
-      if(wild_do_table_inited && find_wild(&replicate_wild_do_table,
-					   hash_key, len)) return 1;
-      if(wild_ignore_table_inited && find_wild(&replicate_wild_ignore_table,
-					   hash_key, len)) return 0;
+    if (wild_do_table_inited && find_wild(&replicate_wild_do_table,
+					  hash_key, len))
+      return 1;
+    if (wild_ignore_table_inited && find_wild(&replicate_wild_ignore_table,
+					      hash_key, len))
+      return 0;
   }
 
-  return !do_table_inited && !wild_do_table_inited;
   // if no explicit rule found
   // and there was a do list, do not replicate. If there was
   // no do list, go ahead
+  return !do_table_inited && !wild_do_table_inited;
 }
 
 
@@ -138,8 +140,8 @@ int add_table_rule(HASH* h, const char* table_spec)
 {
   const char* dot = strchr(table_spec, '.');
   if(!dot) return 1;
+  // len is always > 0 because we know the there exists a '.'
   uint len = (uint)strlen(table_spec);
-  if(!len) return 1;
   TABLE_RULE_ENT* e = (TABLE_RULE_ENT*)my_malloc(sizeof(TABLE_RULE_ENT)
 						 + len, MYF(MY_WME));
   if(!e) return 1;
@@ -156,7 +158,6 @@ int add_wild_table_rule(DYNAMIC_ARRAY* a, const char* table_spec)
   const char* dot = strchr(table_spec, '.');
   if(!dot) return 1;
   uint len = (uint)strlen(table_spec);
-  if(!len) return 1;
   TABLE_RULE_ENT* e = (TABLE_RULE_ENT*)my_malloc(sizeof(TABLE_RULE_ENT)
 						 + len, MYF(MY_WME));
   if(!e) return 1;
@@ -174,7 +175,7 @@ static void free_string_array(DYNAMIC_ARRAY *a)
   for(i = 0; i < a->elements; i++)
     {
       char* p;
-      get_dynamic(a, (gptr)&p, i);
+      get_dynamic(a, (gptr) &p, i);
       my_free(p, MYF(MY_WME));
     }
   delete_dynamic(a);
@@ -227,9 +228,10 @@ int db_ok(const char* db, I_List<i_string> &do_list,
   if(do_list.is_empty() && ignore_list.is_empty())
     return 1; // ok to replicate if the user puts no constraints
 
-  if(!db)
-    return 0; // if the user has specified restrictions on which databases to replicate
+  // if the user has specified restrictions on which databases to replicate
   // and db was not selected, do not replicate
+  if(!db)
+    return 0;
 
   if(!do_list.is_empty()) // if the do's are not empty
     {
@@ -255,40 +257,40 @@ int db_ok(const char* db, I_List<i_string> &do_list,
 	}
       
       return 1;
-      
     }
 }
 
 static int init_strvar_from_file(char* var, int max_size, IO_CACHE* f,
 			       char* default_val)
 {
-
-  if(my_b_gets(f,var, max_size)) 
+  uint length;
+  if ((length=my_b_gets(f,var, max_size)))
   {
-      char* last_p = strend(var) - 1;
-      int c;
-      if(*last_p == '\n') *last_p = 0; // if we stopped on newline, kill it
+    char* last_p = var + length -1;
+    if (*last_p == '\n')
+      *last_p = 0; // if we stopped on newline, kill it
     else
-	while( ((c=my_b_get(f)) != '\n' && c != my_b_EOF));
+    {
       // if we truncated a line or stopped on last char, remove all chars
       // up to and including newline
+      int c;
+      while( ((c=my_b_get(f)) != '\n' && c != my_b_EOF));
+    }
     return 0;
   }
-  else if(default_val)
+  else if (default_val)
   {
     strmake(var,  default_val, max_size);
     return 0;
   }
-  
   return 1;
 }
 
-static int init_intvar_from_file(int* var, IO_CACHE* f,
-			       int default_val)
+static int init_intvar_from_file(int* var, IO_CACHE* f, int default_val)
 {
   char buf[32];
   
-  if(my_b_gets(f, buf, sizeof(buf))) 
+  if (my_b_gets(f, buf, sizeof(buf))) 
   {
     *var = atoi(buf);
     return 0;
@@ -334,9 +336,9 @@ static int create_table_from_dump(THD* thd, NET* net, const char* db,
   thd->query_error = 0;
   thd->net.no_send_ok = 1;
   thd->proc_info = "Creating table from master dump";
+  // save old db in case we are creating in a different database
   char* save_db = thd->db;
-  thd->db = thd->last_nx_db; // in case we are creating in a different
-  // database
+  thd->db = thd->last_nx_db;
   mysql_parse(thd, thd->query, packet_len); // run create table
   thd->db = save_db; // leave things the way the were before
   
@@ -351,7 +353,7 @@ static int create_table_from_dump(THD* thd, NET* net, const char* db,
   tables.name = tables.real_name = (char*)table_name;
   tables.lock_type = TL_WRITE;
   thd->proc_info = "Opening master dump table";
-  if(!open_ltable(thd, &tables, TL_WRITE))
+  if (!open_ltable(thd, &tables, TL_WRITE))
   {
     // open tables will send the error
     sql_print_error("create_table_from_dump: could not open created table");
@@ -361,7 +363,7 @@ static int create_table_from_dump(THD* thd, NET* net, const char* db,
   
   handler *file = tables.table->file;
   thd->proc_info = "Reading master dump table data";
-  if(file->net_read_dump(net))
+  if (file->net_read_dump(net))
   {
     net_printf(&thd->net, ER_MASTER_NET_READ);
     sql_print_error("create_table_from_dump::failed in\
@@ -376,10 +378,11 @@ static int create_table_from_dump(THD* thd, NET* net, const char* db,
   check_opt.quick = 1;
   thd->proc_info = "rebuilding the index on master dump table";
   Vio* save_vio = thd->net.vio;
-  thd->net.vio = 0; // we do not want repair() to spam us with messages
+  // we do not want repair() to spam us with messages
   // just send them to the error log, and report the failure in case of
   // problems
-  if(file->repair(thd,&check_opt ))
+  thd->net.vio = 0;
+  if (file->repair(thd,&check_opt ))
   {
       net_printf(&thd->net, ER_INDEX_REBUILD,tables.table->real_name );
       error = 1;
@@ -423,15 +426,12 @@ int fetch_nx_table(THD* thd, MASTER_INFO* mi)
     }
   
   error = 0;
+
  err:
-  if(mysql)
-    {
+  if (mysql)
     mc_mysql_close(mysql);
-     mysql = 0;
-    }
-  if(nx_errno && thd->net.vio)
+  if (nx_errno && thd->net.vio)
     send_error(&thd->net, nx_errno, "Error in fetch_nx_table");
-  
   return error;
 }
 
@@ -448,14 +448,14 @@ void end_master_info(MASTER_INFO* mi)
 
 int init_master_info(MASTER_INFO* mi)
 {
-  if(mi->inited)
+  if (mi->inited)
     return 0;
-  int fd;
+  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+16+32);
 
-
   // we need a mutex while we are changing master info parameters to
   // keep other threads from reading bogus info
 
@@ -463,13 +463,14 @@ int init_master_info(MASTER_INFO* mi)
   mi->pending = 0;
   fd = mi->fd;
   
-  if(!my_stat(fname, &stat_area, MYF(0))) // we do not want any messages
-    // if the file does not exist
+  // we do not want any messages if the 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(fd >= 0) my_close(fd, MYF(MY_WME));
-      if((fd = my_open(fname, O_CREAT|O_RDWR|O_BINARY, MYF(MY_WME))) < 0
+    if (fd >= 0)
+      my_close(fd, MYF(MY_WME));
+    if ((fd = my_open(fname, O_CREAT|O_RDWR|O_BINARY, MYF(MY_WME))) < 0
 	|| init_io_cache(&mi->file, fd, IO_SIZE*2, READ_CACHE, 0L,0,
 			 MYF(MY_WME)))
     {
@@ -482,15 +483,14 @@ int init_master_info(MASTER_INFO* mi)
     mi->pos = 4; // skip magic number
     mi->fd = fd;
       
-      if(master_host)
+    if (master_host)
       strmake(mi->host, master_host, sizeof(mi->host) - 1);
-      if(master_user)
+    if (master_user)
       strmake(mi->user, master_user, sizeof(mi->user) - 1);
-      if(master_password)
+    if (master_password)
       strmake(mi->password, master_password, sizeof(mi->password) - 1);
     mi->port = master_port;
     mi->connect_retry = master_connect_retry;
-      
   }
   else // file exists
   {
@@ -506,24 +506,19 @@ int init_master_info(MASTER_INFO* mi)
       return 1;
     }
       
-      if(!my_b_gets(&mi->file, mi->log_file_name, sizeof(mi->log_file_name)))
+    if (!(length=my_b_gets(&mi->file, mi->log_file_name,
+			   sizeof(mi->log_file_name))))
     {
-	  sql_print_error("Error reading log file name from master info file ");
-	  end_io_cache(&mi->file);
-	  my_close(fd, MYF(0));
-	  pthread_mutex_unlock(&mi->lock);
-          return 1;
+      msg="Error reading log file name from master info file ";
+      goto error;
     }
 
-      *(strend(mi->log_file_name) - 1) = 0; // kill \n
+    mi->log_file_name[length]= 0; // kill \n
     char buf[FN_REFLEN];
     if(!my_b_gets(&mi->file, buf, sizeof(buf)))
     {
-	  sql_print_error("Error reading log file position from master info file");
-	  end_io_cache(&mi->file);
-	  my_close(fd, MYF(0));
-	  pthread_mutex_unlock(&mi->lock);
-	  return 1;
+      msg="Error reading log file position from master info file";
+      goto error;
     }
 
     mi->pos = strtoull(buf,(char**) 0, 10);
@@ -538,11 +533,8 @@ int init_master_info(MASTER_INFO* mi)
        init_intvar_from_file((int*)&mi->connect_retry, &mi->file,
 			     master_connect_retry))
     {
-	  sql_print_error("Error reading master configuration");
-	  end_io_cache(&mi->file);
-	  my_close(fd, MYF(0));
-	  pthread_mutex_unlock(&mi->lock);
-	  return 1;
+      msg="Error reading master configuration";
+      goto error;
     }
   }
   
@@ -550,14 +542,16 @@ int init_master_info(MASTER_INFO* mi)
   // now change the cache from READ to WRITE - must do this
   // before flush_master_info
   reinit_io_cache(&mi->file, WRITE_CACHE, 0L,0,1);
-  if(flush_master_info(mi))
-    {
-      pthread_mutex_unlock(&mi->lock);
-      return 1;
-    }
+  error=test(flush_master_info(mi));
   pthread_mutex_unlock(&mi->lock);
+  return error;
 
-  return 0;
+error:
+  sql_print_error(msg);
+  end_io_cache(&mi->file);
+  my_close(fd, MYF(0));
+  pthread_mutex_unlock(&mi->lock);
+  return 1;
 }
 
 int show_master_info(THD* thd)
@@ -588,7 +582,7 @@ int show_master_info(THD* thd)
   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);
+  net_store_data(packet, (longlong) glob_mi.pos);
   pthread_mutex_unlock(&glob_mi.lock);
   pthread_mutex_lock(&LOCK_slave);
   net_store_data(packet, slave_running ? "Yes":"No");
@@ -596,7 +590,7 @@ int show_master_info(THD* thd)
   net_store_data(packet, &replicate_do_db);
   net_store_data(packet, &replicate_ignore_db);
   
-  if(my_net_write(&thd->net, (char*)thd->packet.ptr(), packet->length()))
+  if (my_net_write(&thd->net, (char*)thd->packet.ptr(), packet->length()))
     DBUG_RETURN(-1);
 
   send_eof(&thd->net);
@@ -610,26 +604,28 @@ int flush_master_info(MASTER_INFO* mi)
   
   my_b_seek(file, 0L);
   my_b_printf(file, "%s\n%s\n%s\n%s\n%s\n%d\n%d\n",
-        mi->log_file_name, llstr(mi->pos, lbuf), mi->host, mi->user, mi->password,
-	     mi->port, mi->connect_retry);
+	      mi->log_file_name, llstr(mi->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, ulong log_pos)
 {
-  if(!inited) return -1;
-  bool pos_reached = 0;
+  if (!inited) return -1;
+  bool pos_reached;
   int event_count = 0;
-  for(;!pos_reached && !thd->killed;)
+  pthread_mutex_lock(&lock);
+  do
   {
     int cmp_result;
-      char* basename;
-      pthread_mutex_lock(&lock);
-      if(*log_file_name)
+    if (*log_file_name)
     {
-	  basename = strrchr(log_file_name, FN_LIBCHAR);
-	  if(basename)
+      /*
+	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);
+      if (basename)
 	++basename;
       else
 	basename = log_file_name;
@@ -640,20 +636,19 @@ int st_master_info::wait_for_pos(THD* thd, String* log_name, ulong log_pos)
       cmp_result = 0;
       
     pos_reached = ((!cmp_result && pos >= log_pos) || cmp_result > 0);
-      if(!pos_reached && !thd->killed)
+    if (pos_reached || thd->killed)
+      break;
     {
       const char* msg = thd->enter_cond(&cond, &lock,
 					"Waiting for master update");
       pthread_cond_wait(&cond, &lock);
       thd->exit_cond(msg);
       event_count++;
+      pos_reached = (pos >= log_pos);
     }
+  } while (!pos_reached && !thd->killed);
   pthread_mutex_unlock(&lock);
-      if(thd->killed)
-	return -1;
-    }
-
-  return event_count;
+  return thd->killed ? -1 : event_count;
 }
 
 
@@ -715,12 +710,17 @@ static int safe_sleep(THD* thd, int sec)
   while (start_time < end_time)
   {
     int nap_time = (int) (end_time - start_time);
-    thr_alarm(&alarmed, 2 * nap_time,&alarm_buff); // the only reason we are asking for alarm is so that
-    // we will be woken up in case of murder, so if we do not get killed, set the alarm
-    // so it goes off after we wake up naturally
+    /*
+      the only reason we are asking for alarm is so that
+      we will be woken up in case of murder, so if we do not get killed,
+      set the alarm so it goes off after we wake up naturally
+    */
+    thr_alarm(&alarmed, 2 * nap_time,&alarm_buff);
     sleep(nap_time);
-    if (thr_alarm_in_use(&alarmed)) // if we wake up before the alarm goes off, hit the button
-      thr_end_alarm(&alarmed);     // so it will not wake up the wife and kids :-)
+    // if we wake up before the alarm goes off, hit the button
+    // so it will not wake up the wife and kids :-)
+    if (thr_alarm_in_use(&alarmed))
+      thr_end_alarm(&alarmed);
     
     if (slave_killed(thd))
       return 1;
@@ -741,11 +741,11 @@ static int request_dump(MYSQL* mysql, MASTER_INFO* mi)
   int4store(buf + 6, server_id);
   len = (uint) strlen(logname);
   memcpy(buf + 10, logname,len);
-  if(mc_simple_command(mysql, COM_BINLOG_DUMP, buf, len + 10, 1))
+  if (mc_simple_command(mysql, COM_BINLOG_DUMP, buf, len + 10, 1))
+  {
     // something went wrong, so we will just reconnect and retry later
     // in the future, we should do a better error analysis, but for
     // now we just fill up the error log :-)
-    {
     sql_print_error("Error on COM_BINLOG_DUMP: %s, will retry in %d secs",
 		    mc_mysql_error(mysql), master_connect_retry);
     return 1;
@@ -772,7 +772,7 @@ static int request_table_dump(MYSQL* mysql, char* db, char* table)
   *p++ = table_len;
   memcpy(p, table, table_len);
   
-  if(mc_simple_command(mysql, COM_TABLE_DUMP, buf, p - buf + table_len, 1))
+  if (mc_simple_command(mysql, COM_TABLE_DUMP, buf, p - buf + table_len, 1))
   {
     sql_print_error("request_table_dump: Error sending the table dump \
 command");
@@ -786,21 +786,24 @@ command");
 static uint read_event(MYSQL* mysql, MASTER_INFO *mi)
 {
   uint len = packet_error;
-  int read_errno = EINTR; // for convinience lets think we start by
+  // for convinience lets think we start by
   // being in the interrupted state :-)
+  int read_errno = EINTR;
+
   // my_real_read() will time us out
   // we check if we were told to die, and if not, try reading again
 #ifndef DBUG_OFF
-  if(disconnect_slave_event_count && !(events_till_disconnect--))
+  if (disconnect_slave_event_count && !(events_till_disconnect--))
     return packet_error;      
 #endif
   
-  while (!abort_loop && !abort_slave && len == packet_error && read_errno == EINTR )
+  while (!abort_loop && !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 || abort_slave)
     return packet_error;
   if (len == packet_error || (int) len < 1)
   {
@@ -810,7 +813,7 @@ server_errno=%d)",
     return packet_error;
   }
 
-  if(len == 1)
+  if (len == 1)
   {
      sql_print_error("Slave: received 0 length packet from server, apparent\
  master shutdown: %s (%d)",
@@ -820,7 +823,6 @@ server_errno=%d)",
   
   DBUG_PRINT("info",( "len=%u, net->read_pos[4] = %d\n",
 		      len, mysql->net.read_pos[4]));
-
   return len - 1;   
 }
 
@@ -833,7 +835,7 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
   if (ev)
   {
     int type_code = ev->get_type_code();
-    if(ev->server_id == ::server_id)
+    if (ev->server_id == ::server_id)
     {
       if(type_code == LOAD_EVENT)
 	skip_load_data_infile(net);
@@ -848,15 +850,14 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
     thd->set_time();				// time the query
     ev->when = time(NULL);
     
-    switch(type_code)
-    {
+    switch(type_code) {
     case QUERY_EVENT:
     {
       Query_log_event* qev = (Query_log_event*)ev;
       int q_len = qev->q_len;
       init_sql_alloc(&thd->mem_root, 8192,0);
       thd->db = rewrite_db((char*)qev->db);
-      if(db_ok(thd->db, replicate_do_db, replicate_ignore_db))
+      if (db_ok(thd->db, replicate_do_db, replicate_ignore_db))
       {
 	thd->query = (char*)qev->query;
 	thd->set_time((time_t)qev->when);
@@ -871,7 +872,7 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
 	thd->slave_proxy_id = qev->thread_id;	// for temp tables
 	mysql_parse(thd, thd->query, q_len);
 	int expected_error,actual_error;
-	if((expected_error = qev->error_code) !=
+	if ((expected_error = qev->error_code) !=
 	    (actual_error = thd->net.last_errno) && expected_error)
 	{
 	  sql_print_error("Slave: did not get the expected error\
@@ -881,13 +882,13 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
 			  );
 	  thd->query_error = 1;
 	}
-	else if(expected_error == actual_error)
+	else if (expected_error == actual_error)
 	  thd->query_error = 0;
       }
-      thd->db = 0;// prevent db from being freed
+      thd->db = 0;				// prevent db from being freed
       thd->query = 0;				// just to be sure
-      thd->convert_set = 0; // assume no convert for next query
-      // unless set explictly
+      // assume no convert for next query unless set explictly
+      thd->convert_set = 0;
       close_thread_tables(thd);
       
       if (thd->query_error || thd->fatal_error)
@@ -989,9 +990,10 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
 	  net->pkt_nr = thd->net.pkt_nr;
 	}
       }
-      else // we will just ask the master to send us /dev/null if we do not want to
-	// load the data :-)
+      else
       {
+	// we will just ask the master to send us /dev/null if we do not
+	// want to load the data :-)
 	skip_load_data_infile(net);
       }
 	    
@@ -1077,7 +1079,6 @@ static int exec_event(THD* thd, NET* net, MASTER_INFO* mi, int event_len)
       break;
     }
     }
-                  
   }
   else
   {
@@ -1099,7 +1100,7 @@ pthread_handler_decl(handle_slave,arg __attribute__((unused)))
   MYSQL *mysql = NULL ;
 
   pthread_mutex_lock(&LOCK_slave);
-  if(!server_id)
+  if (!server_id)
   {
     pthread_cond_broadcast(&COND_slave_start);
     pthread_mutex_unlock(&LOCK_slave);
@@ -1125,14 +1126,14 @@ pthread_handler_decl(handle_slave,arg __attribute__((unused)))
   bool retried_once = 0;
   ulonglong last_failed_pos = 0;
   
-  my_thread_init(); // needs to be up here, otherwise we get a coredump
-  // trying to use DBUG_ stuff
+  // 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_ !
   thd->set_time();
   DBUG_ENTER("handle_slave");
 
   pthread_detach_this_thread();
-  if(init_slave_thread(thd) || init_master_info(&glob_mi))
+  if (init_slave_thread(thd) || init_master_info(&glob_mi))
     goto err;
   thd->thread_stack = (char*)&thd; // remember where our stack is
   thd->temporary_tables = save_temporary_tables; // restore temp tables
@@ -1141,8 +1142,8 @@ pthread_handler_decl(handle_slave,arg __attribute__((unused)))
   DBUG_PRINT("info",("master info: log_file_name=%s, position=%d",
 		     glob_mi.log_file_name, glob_mi.pos));
 
-  mysql = mc_mysql_init(NULL);
-  if(!mysql)
+  
+  if (!(mysql = mc_mysql_init(NULL)))
   {
     sql_print_error("Slave thread: error in mc_mysql_init()");
     goto err;
@@ -1162,7 +1163,7 @@ pthread_handler_decl(handle_slave,arg __attribute__((unused)))
   else
     goto err;
   
-  while(!slave_killed(thd))
+  while (!slave_killed(thd))
   {
       thd->proc_info = "requesting binlog dump";
       if(request_dump(mysql, &glob_mi))
@@ -1255,12 +1256,11 @@ reconnecting to retry, log '%s' position %ld", RPL_LOG_NAME,
 #ifndef DBUG_OFF
 	  else
 	    {
-	      stuck_count++;
 	      // show a little mercy, allow slave to read one more event
 	      // before cutting him off - otherwise he gets stuck
 	      // on Invar events, since they do not advance the offset
 	      // immediately
-	      if(stuck_count > 2)
+	      if (++stuck_count > 2)
 	        events_till_disconnect++;
 	    }
 #endif	  
@@ -1276,10 +1276,7 @@ position %ld",
 		  RPL_LOG_NAME, glob_mi.pos);
   thd->query = thd->db = 0; // extra safety
   if(mysql)
-    {
       mc_mysql_close(mysql);
-      mysql = 0;
-    }
   thd->proc_info = "waiting for slave mutex on exit";
   pthread_mutex_lock(&LOCK_slave);
   slave_running = 0;
@@ -1299,8 +1296,10 @@ position %ld",
   DBUG_RETURN(0);				// Can't return anything here
 }
 
+
+/* try to connect until successful or slave killed */
+
 static int safe_connect(THD* thd, MYSQL* mysql, MASTER_INFO* mi)
-  // will try to connect until successful or slave killed
 {
   int slave_was_killed;
 #ifndef DBUG_OFF
@@ -1322,13 +1321,14 @@ static int safe_connect(THD* thd, MYSQL* mysql, MASTER_INFO* mi)
   return slave_was_killed;
 }
 
-// will try to connect until successful or slave killed
+/* try to connect until successful or slave killed */
 
 static int safe_reconnect(THD* thd, MYSQL* mysql, MASTER_INFO* mi)
 {
   int slave_was_killed;
-  mi->pending = 0; // if we lost connection after reading a state set event
+ // 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
@@ -1354,4 +1354,3 @@ replication resumed in log '%s' at position %ld", glob_mi.user,
 template class I_List_iterator<i_string>;
 template class I_List_iterator<i_string_pair>;
 #endif
-

sql/sql_repl.cc

@@ -311,29 +311,30 @@ sweepstakes if you report the bug";
   // we need to start a packet with something other than 255
   // to distiquish it from error
 
-  if(pos == 4) // tell the client log name with a fake rotate_event
+  // tell the client log name with a fake rotate_event
   // if we are at the start of the log
+  if(pos == 4) 
   {
-      if(fake_rotate_event(net, packet, log_file_name, &errmsg))
+    if (fake_rotate_event(net, packet, log_file_name, &errmsg))
       goto err;
     packet->length(0);
     packet->append("\0", 1);
   }
 
-  while(!net->error && net->vio != 0 && !thd->killed)
+  while (!net->error && net->vio != 0 && !thd->killed)
   {
     pthread_mutex_t *log_lock = mysql_bin_log.get_log_lock();
       
     while (!(error = Log_event::read_log_event(&log, packet, log_lock)))
     {
-      if(my_net_write(net, (char*)packet->ptr(), packet->length()) )
+      if (my_net_write(net, (char*)packet->ptr(), packet->length()) )
       {
 	errmsg = "Failed on my_net_write()";
 	goto err;
       }
       DBUG_PRINT("info", ("log event code %d",
 			  (*packet)[LOG_EVENT_OFFSET+1] ));
-      if((*packet)[LOG_EVENT_OFFSET+1] == LOAD_EVENT)
+      if ((*packet)[LOG_EVENT_OFFSET+1] == LOAD_EVENT)
       {
 	if(send_file(thd))
 	{
@@ -345,8 +346,7 @@ sweepstakes if you report the bug";
       packet->append("\0",1);
     }
     
-    
-    if(error != LOG_READ_EOF)
+    if (error != LOG_READ_EOF)
     {
       switch(error)
       {
@@ -399,7 +399,8 @@ sweepstakes if you report the bug";
 
 	// no one will update the log while we are reading
 	// now, but we'll be quick and just read one record
-	switch(Log_event::read_log_event(&log, packet, log_lock))
+	pthread_mutex_lock(log_lock);
+	switch (Log_event::read_log_event(&log, packet, (pthread_mutex_t*) 0))
 	{
 	case 0:
 	  read_packet = 1;
@@ -407,15 +408,14 @@ sweepstakes if you report the bug";
 	  // slave
 	  break;
 	case LOG_READ_EOF:
-	  pthread_mutex_lock(log_lock);
 	  pthread_cond_wait(&COND_binlog_update, log_lock);
-	  pthread_mutex_unlock(log_lock);
 	  break;
 
 	default:
 	  fatal_error = 1;
 	  break;
 	}
+	pthread_mutex_unlock(log_lock);
 
 	pthread_mutex_lock(&thd->mysys_var->mutex);
 	thd->mysys_var->current_mutex= 0;

sql/sql_show.cc

@@ -592,7 +592,7 @@ mysqld_show_logs(THD *thd)
 
 #ifdef HAVE_BERKELEY_DB
   if (berkeley_show_logs(thd))
-    DBUG_RETURN(1);
+    DBUG_RETURN(-1);
 #endif
 
   send_eof(&thd->net);