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WL#2360 Performance schema

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Part II, engines instrumentation
This commit is contained in:
Marc Alff
2009-12-04 18:26:15 -07:00
parent 34436edb4d
commit 57fd11788e
58 changed files with 1033 additions and 576 deletions
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49
storage/example/ha_example.cc
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@ -112,7 +112,7 @@ handlerton *example_hton;
static HASH example_open_tables;
/* The mutex used to init the hash; variable for example share methods */
pthread_mutex_t example_mutex;
mysql_mutex_t example_mutex;
/**
@brief
@ -126,13 +126,39 @@ static uchar* example_get_key(EXAMPLE_SHARE *share, size_t *length,
return (uchar*) share->table_name;
}
#ifdef HAVE_PSI_INTERFACE
static PSI_mutex_key ex_key_mutex_example, ex_key_mutex_EXAMPLE_SHARE_mutex;
static PSI_mutex_info all_example_mutexes[]=
{
{ &ex_key_mutex_example, "example", PSI_FLAG_GLOBAL},
{ &ex_key_mutex_EXAMPLE_SHARE_mutex, "EXAMPLE_SHARE::mutex", 0}
};
static void init_example_psi_keys()
{
const char* category= "example";
int count;
if (PSI_server == NULL)
return;
count= array_elements(all_example_mutexes);
PSI_server->register_mutex(category, all_example_mutexes, count);
}
#endif
static int example_init_func(void *p)
{
DBUG_ENTER("example_init_func");
#ifdef HAVE_PSI_INTERFACE
init_example_psi_keys();
#endif
example_hton= (handlerton *)p;
pthread_mutex_init(&example_mutex,MY_MUTEX_INIT_FAST);
mysql_mutex_init(ex_key_mutex_example, &example_mutex, MY_MUTEX_INIT_FAST);
(void) my_hash_init(&example_open_tables,system_charset_info,32,0,0,
(my_hash_get_key) example_get_key,0,0);
@ -152,7 +178,7 @@ static int example_done_func(void *p)
if (example_open_tables.records)
error= 1;
my_hash_free(&example_open_tables);
pthread_mutex_destroy(&example_mutex);
mysql_mutex_destroy(&example_mutex);
DBUG_RETURN(0);
}
@ -172,7 +198,7 @@ static EXAMPLE_SHARE *get_share(const char *table_name, TABLE *table)
uint length;
char *tmp_name;
pthread_mutex_lock(&example_mutex);
mysql_mutex_lock(&example_mutex);
length=(uint) strlen(table_name);
if (!(share=(EXAMPLE_SHARE*) my_hash_search(&example_open_tables,
@ -185,7 +211,7 @@ static EXAMPLE_SHARE *get_share(const char *table_name, TABLE *table)
&tmp_name, length+1,
NullS)))
{
pthread_mutex_unlock(&example_mutex);
mysql_mutex_unlock(&example_mutex);
return NULL;
}
@ -196,15 +222,16 @@ static EXAMPLE_SHARE *get_share(const char *table_name, TABLE *table)
if (my_hash_insert(&example_open_tables, (uchar*) share))
goto error;
thr_lock_init(&share->lock);
pthread_mutex_init(&share->mutex,MY_MUTEX_INIT_FAST);
mysql_mutex_init(ex_key_mutex_EXAMPLE_SHARE_mutex,
&share->mutex, MY_MUTEX_INIT_FAST);
}
share->use_count++;
pthread_mutex_unlock(&example_mutex);
mysql_mutex_unlock(&example_mutex);
return share;
error:
pthread_mutex_destroy(&share->mutex);
mysql_mutex_destroy(&share->mutex);
my_free(share, MYF(0));
return NULL;
@ -219,15 +246,15 @@ error:
static int free_share(EXAMPLE_SHARE *share)
{
pthread_mutex_lock(&example_mutex);
mysql_mutex_lock(&example_mutex);
if (!--share->use_count)
{
my_hash_delete(&example_open_tables, (uchar*) share);
thr_lock_delete(&share->lock);
pthread_mutex_destroy(&share->mutex);
mysql_mutex_destroy(&share->mutex);
my_free(share, MYF(0));
}
pthread_mutex_unlock(&example_mutex);
mysql_mutex_unlock(&example_mutex);
return 0;
}