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0f10670319
mysql8.4/mysql-charset-bug.patch

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Kluge solution for bug #566547: revert upstream's bad fix for their bug #45058.
diff -Naur mysql-5.1.44.orig/include/my_sys.h mysql-5.1.44/include/my_sys.h
--- mysql-5.1.44.orig/include/my_sys.h 2010-02-04 06:37:06.000000000 -0500
+++ mysql-5.1.44/include/my_sys.h 2010-02-19 23:13:48.000000000 -0500
@@ -951,6 +951,7 @@
CHARSET_INFO *default_cl,
CHARSET_INFO **cl);
+extern void free_charsets(void);
extern char *get_charsets_dir(char *buf);
extern my_bool my_charset_same(CHARSET_INFO *cs1, CHARSET_INFO *cs2);
extern my_bool init_compiled_charsets(myf flags);
diff -Naur mysql-5.1.44.orig/libmysql/libmysql.c mysql-5.1.44/libmysql/libmysql.c
--- mysql-5.1.44.orig/libmysql/libmysql.c 2010-02-04 06:37:07.000000000 -0500
+++ mysql-5.1.44/libmysql/libmysql.c 2010-02-19 23:13:48.000000000 -0500
@@ -211,6 +211,7 @@
}
else
{
+ free_charsets();
mysql_thread_end();
}
diff -Naur mysql-5.1.44.orig/mysys/charset.c mysql-5.1.44/mysys/charset.c
--- mysql-5.1.44.orig/mysys/charset.c 2010-02-04 06:38:50.000000000 -0500
+++ mysql-5.1.44/mysys/charset.c 2010-02-19 23:13:48.000000000 -0500
@@ -322,6 +321,7 @@
#define MY_CHARSET_INDEX "Index.xml"
const char *charsets_dir= NULL;
+static int charset_initialized=0;
static my_bool my_read_charset_file(const char *filename, myf myflags)
@@ -399,37 +399,63 @@
}
-static my_pthread_once_t charsets_initialized= MY_PTHREAD_ONCE_INIT;
-
-static void init_available_charsets(void)
+#ifdef __NETWARE__
+my_bool STDCALL init_available_charsets(myf myflags)
+#else
+static my_bool init_available_charsets(myf myflags)
+#endif
{
char fname[FN_REFLEN + sizeof(MY_CHARSET_INDEX)];
- CHARSET_INFO **cs;
-
- bzero(&all_charsets,sizeof(all_charsets));
- init_compiled_charsets(MYF(0));
-
- /* Copy compiled charsets */
- for (cs=all_charsets;
- cs < all_charsets+array_elements(all_charsets)-1 ;
- cs++)
+ my_bool error=FALSE;
+ /*
+ We have to use charset_initialized to not lock on THR_LOCK_charset
+ inside get_internal_charset...
+ */
+ if (!charset_initialized)
{
- if (*cs)
+ CHARSET_INFO **cs;
+ /*
+ To make things thread safe we are not allowing other threads to interfere
+ while we may changing the cs_info_table
+ */
+ pthread_mutex_lock(&THR_LOCK_charset);
+ if (!charset_initialized)
{
- if (cs[0]->ctype)
- if (init_state_maps(*cs))
- *cs= NULL;
+ bzero(&all_charsets,sizeof(all_charsets));
+ init_compiled_charsets(myflags);
+
+ /* Copy compiled charsets */
+ for (cs=all_charsets;
+ cs < all_charsets+array_elements(all_charsets)-1 ;
+ cs++)
+ {
+ if (*cs)
+ {
+ if (cs[0]->ctype)
+ if (init_state_maps(*cs))
+ *cs= NULL;
+ }
+ }
+
+ strmov(get_charsets_dir(fname), MY_CHARSET_INDEX);
+ error= my_read_charset_file(fname,myflags);
+ charset_initialized=1;
}
+ pthread_mutex_unlock(&THR_LOCK_charset);
}
-
- strmov(get_charsets_dir(fname), MY_CHARSET_INDEX);
- my_read_charset_file(fname, MYF(0));
+ return error;
+}
+
+
+void free_charsets(void)
+{
+ charset_initialized=0;
}
uint get_collation_number(const char *name)
{
- my_pthread_once(&charsets_initialized, init_available_charsets);
+ init_available_charsets(MYF(0));
return get_collation_number_internal(name);
}
@@ -437,7 +463,7 @@
uint get_charset_number(const char *charset_name, uint cs_flags)
{
CHARSET_INFO **cs;
- my_pthread_once(&charsets_initialized, init_available_charsets);
+ init_available_charsets(MYF(0));
for (cs= all_charsets;
cs < all_charsets+array_elements(all_charsets)-1 ;
@@ -454,7 +480,7 @@
const char *get_charset_name(uint charset_number)
{
CHARSET_INFO *cs;
- my_pthread_once(&charsets_initialized, init_available_charsets);
+ init_available_charsets(MYF(0));
cs=all_charsets[charset_number];
if (cs && (cs->number == charset_number) && cs->name )
@@ -512,7 +538,7 @@
if (cs_number == default_charset_info->number)
return default_charset_info;
- my_pthread_once(&charsets_initialized, init_available_charsets);
+ (void) init_available_charsets(MYF(0)); /* If it isn't initialized */
if (!cs_number || cs_number >= array_elements(all_charsets)-1)
return NULL;
@@ -534,7 +560,7 @@
{
uint cs_number;
CHARSET_INFO *cs;
- my_pthread_once(&charsets_initialized, init_available_charsets);
+ (void) init_available_charsets(MYF(0)); /* If it isn't initialized */
cs_number=get_collation_number(cs_name);
cs= cs_number ? get_internal_charset(cs_number,flags) : NULL;
@@ -559,7 +585,7 @@
DBUG_ENTER("get_charset_by_csname");
DBUG_PRINT("enter",("name: '%s'", cs_name));
- my_pthread_once(&charsets_initialized, init_available_charsets);
+ (void) init_available_charsets(MYF(0)); /* If it isn't initialized */
cs_number= get_charset_number(cs_name, cs_flags);
cs= cs_number ? get_internal_charset(cs_number, flags) : NULL;
diff -Naur mysql-5.1.44.orig/mysys/my_init.c mysql-5.1.44/mysys/my_init.c
--- mysql-5.1.44.orig/mysys/my_init.c 2010-02-04 06:38:51.000000000 -0500
+++ mysql-5.1.44/mysys/my_init.c 2010-02-19 23:13:48.000000000 -0500
@@ -165,6 +165,7 @@
my_print_open_files();
}
}
+ free_charsets();
my_error_unregister_all();
my_once_free();
diff -Naur mysql-5.1.44.orig/netware/libmysqlmain.c mysql-5.1.44/netware/libmysqlmain.c
--- mysql-5.1.44.orig/netware/libmysqlmain.c 2010-02-04 06:38:51.000000000 -0500
+++ mysql-5.1.44/netware/libmysqlmain.c 2010-02-19 23:13:48.000000000 -0500
@@ -18,7 +18,7 @@
#include "my_global.h"
-void init_available_charsets(void);
+my_bool init_available_charsets(myf myflags);
/* this function is required so that global memory is allocated against this
library nlm, and not against a paticular client */
@@ -31,7 +31,7 @@
{
mysql_server_init(0, NULL, NULL);
- init_available_charsets();
+ init_available_charsets(MYF(0));
return 0;
}
diff -Naur mysql-5.1.44.orig/sql/mysqld.cc mysql-5.1.44/sql/mysqld.cc
--- mysql-5.1.44.orig/sql/mysqld.cc 2010-02-04 06:39:50.000000000 -0500
+++ mysql-5.1.44/sql/mysqld.cc 2010-02-19 23:13:48.000000000 -0500
@@ -1287,6 +1287,7 @@
lex_free(); /* Free some memory */
item_create_cleanup();
set_var_free();
+ free_charsets();
if (!opt_noacl)
{
#ifdef HAVE_DLOPEN
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