WL#4738 streamline/simplify @@variable creation process

Bug#16565 mysqld --help --verbose does not order variablesBug#20413 sql_slave_skip_counter is not shown in show variables
Bug#20415 Output of mysqld --help --verbose is incomplete
Bug#25430 variable not found in SELECT @@global.ft_max_word_len;
Bug#32902 plugin variables don't know their names
Bug#34599 MySQLD Option and Variable Reference need to be consistent in formatting!
Bug#34829 No default value for variable and setting default does not raise error
Bug#34834 ? Is accepted as a valid sql mode
Bug#34878 Few variables have default value according to documentation but error occurs  
Bug#34883 ft_boolean_syntax cant be assigned from user variable to global var.
Bug#37187 `INFORMATION_SCHEMA`.`GLOBAL_VARIABLES`: inconsistent status
Bug#40988 log_output_basic.test succeeded though syntactically false.
Bug#41010 enum-style command-line options are not honoured (maria.maria-recover fails)
Bug#42103 Setting key_buffer_size to a negative value may lead to very large allocations 
Bug#44691 Some plugins configured as MYSQL_PLUGIN_MANDATORY in can be disabled
Bug#44797 plugins w/o command-line options have no disabling option in --help
Bug#46314 string system variables don't support expressions
Bug#46470 sys_vars.max_binlog_cache_size_basic_32 is broken
Bug#46586 When using the plugin interface the type "set" for options caused a crash.
Bug#47212 Crash in DBUG_PRINT in mysqltest.cc when trying to print octal number
Bug#48758 mysqltest crashes on sys_vars.collation_server_basic in gcov builds
Bug#49417 some complaints about mysqld --help --verbose output
Bug#49540 DEFAULT value of binlog_format isn't the default value
Bug#49640 ambiguous option '--skip-skip-myisam' (double skip prefix)
Bug#49644 init_connect and \0
Bug#49645 init_slave and multi-byte characters
Bug#49646 mysql --show-warnings crashes when server dies

1 files changed, 41 insertions, 0 deletions

diff --git a/sql/keycaches.h b/sql/keycaches.h
new file mode 100644
index 00000000000..542a4d14c3d
--- /dev/null
+++ b/sql/keycaches.h
@@ -0,0 +1,41 @@
+/* Copyright (C) 2002-2006 MySQL AB, 2009 Sun Microsystems, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+#include "sql_list.h"
+#include <keycache.h>
+
+extern "C"
+{
+  typedef int (*process_key_cache_t) (const char *, KEY_CACHE *);
+}
+
+class NAMED_ILINK;
+
+class NAMED_ILIST: public I_List<NAMED_ILINK>
+{
+  public:
+  void delete_elements(void (*free_element)(const char*, uchar*));
+};
+
+extern LEX_STRING default_key_cache_base;
+extern KEY_CACHE zero_key_cache;
+extern NAMED_ILIST key_caches;
+
+KEY_CACHE *create_key_cache(const char *name, uint length);
+KEY_CACHE *get_key_cache(LEX_STRING *cache_name);
+KEY_CACHE *get_or_create_key_cache(const char *name, uint length);
+void free_key_cache(const char *name, KEY_CACHE *key_cache);
+bool process_key_caches(process_key_cache_t func);
+