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Merge branch '5.5' into 10.0

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This commit is contained in:
Sergei Golubchik
2016-08-10 19:19:05 +02:00
parent c6fdb92ca8 5ad02062d9
commit 309c08c17c
64 changed files with 1247 additions and 276 deletions
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126
sql/sql_plugin.cc
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@ -2937,68 +2937,8 @@ static uchar *intern_sys_var_ptr(THD* thd, int offset, bool global_lock)
if (!thd->variables.dynamic_variables_ptr ||
(uint)offset > thd->variables.dynamic_variables_head)
{
uint idx;
mysql_rwlock_rdlock(&LOCK_system_variables_hash);
thd->variables.dynamic_variables_ptr= (char*)
my_realloc(thd->variables.dynamic_variables_ptr,
global_variables_dynamic_size,
MYF(MY_WME | MY_FAE | MY_ALLOW_ZERO_PTR));
if (global_lock)
mysql_mutex_lock(&LOCK_global_system_variables);
mysql_mutex_assert_owner(&LOCK_global_system_variables);
memcpy(thd->variables.dynamic_variables_ptr +
thd->variables.dynamic_variables_size,
global_system_variables.dynamic_variables_ptr +
thd->variables.dynamic_variables_size,
global_system_variables.dynamic_variables_size -
thd->variables.dynamic_variables_size);
/*
now we need to iterate through any newly copied 'defaults'
and if it is a string type with MEMALLOC flag, we need to strdup
*/
for (idx= 0; idx < bookmark_hash.records; idx++)
{
sys_var_pluginvar *pi;
sys_var *var;
st_bookmark *v= (st_bookmark*) my_hash_element(&bookmark_hash,idx);
if (v->version <= thd->variables.dynamic_variables_version)
continue; /* already in thd->variables */
if (!(var= intern_find_sys_var(v->key + 1, v->name_len)) ||
!(pi= var->cast_pluginvar()) ||
v->key[0] != plugin_var_bookmark_key(pi->plugin_var->flags))
continue;
/* Here we do anything special that may be required of the data types */
if ((pi->plugin_var->flags & PLUGIN_VAR_TYPEMASK) == PLUGIN_VAR_STR &&
pi->plugin_var->flags & PLUGIN_VAR_MEMALLOC)
{
char **pp= (char**) (thd->variables.dynamic_variables_ptr +
*(int*)(pi->plugin_var + 1));
if ((*pp= *(char**) (global_system_variables.dynamic_variables_ptr +
*(int*)(pi->plugin_var + 1))))
*pp= my_strdup(*pp, MYF(MY_WME|MY_FAE));
}
}
if (global_lock)
mysql_mutex_unlock(&LOCK_global_system_variables);
thd->variables.dynamic_variables_version=
global_system_variables.dynamic_variables_version;
thd->variables.dynamic_variables_head=
global_system_variables.dynamic_variables_head;
thd->variables.dynamic_variables_size=
global_system_variables.dynamic_variables_size;
sync_dynamic_session_variables(thd, global_lock);
mysql_rwlock_unlock(&LOCK_system_variables_hash);
}
DBUG_RETURN((uchar*)thd->variables.dynamic_variables_ptr + offset);
@ -3078,6 +3018,70 @@ void plugin_thdvar_init(THD *thd)
}
void sync_dynamic_session_variables(THD* thd, bool global_lock)
{
uint idx;
thd->variables.dynamic_variables_ptr= (char*)
my_realloc(thd->variables.dynamic_variables_ptr,
global_variables_dynamic_size,
MYF(MY_WME | MY_FAE | MY_ALLOW_ZERO_PTR));
if (global_lock)
mysql_mutex_lock(&LOCK_global_system_variables);
mysql_mutex_assert_owner(&LOCK_global_system_variables);
memcpy(thd->variables.dynamic_variables_ptr +
thd->variables.dynamic_variables_size,
global_system_variables.dynamic_variables_ptr +
thd->variables.dynamic_variables_size,
global_system_variables.dynamic_variables_size -
thd->variables.dynamic_variables_size);
/*
now we need to iterate through any newly copied 'defaults'
and if it is a string type with MEMALLOC flag, we need to strdup
*/
for (idx= 0; idx < bookmark_hash.records; idx++)
{
sys_var_pluginvar *pi;
sys_var *var;
st_bookmark *v= (st_bookmark*) my_hash_element(&bookmark_hash,idx);
if (v->version <= thd->variables.dynamic_variables_version)
continue; /* already in thd->variables */
if (!(var= intern_find_sys_var(v->key + 1, v->name_len)) ||
!(pi= var->cast_pluginvar()) ||
v->key[0] != plugin_var_bookmark_key(pi->plugin_var->flags))
continue;
/* Here we do anything special that may be required of the data types */
if ((pi->plugin_var->flags & PLUGIN_VAR_TYPEMASK) == PLUGIN_VAR_STR &&
pi->plugin_var->flags & PLUGIN_VAR_MEMALLOC)
{
int offset= ((thdvar_str_t *)(pi->plugin_var))->offset;
char **pp= (char**) (thd->variables.dynamic_variables_ptr + offset);
if (*pp)
*pp= my_strdup(*pp, MYF(MY_WME|MY_FAE));
}
}
if (global_lock)
mysql_mutex_unlock(&LOCK_global_system_variables);
thd->variables.dynamic_variables_version=
global_system_variables.dynamic_variables_version;
thd->variables.dynamic_variables_head=
global_system_variables.dynamic_variables_head;
thd->variables.dynamic_variables_size=
global_system_variables.dynamic_variables_size;
}
/*
Unlocks all system variables which hold a reference
*/