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Issue - (#61): Remove unnecessary code previously used for wait_events.

Browse Source 
PG-146
This commit is contained in:
Ibrar Ahmed
2020-11-11 13:52:45 +00:00
parent 95dc0b575f
commit 3999e28c00
5 changed files with 17 additions and 312 deletions
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58
hash_query.c
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@@ -17,9 +17,7 @@
static pgssSharedState *pgss;
static HTAB *pgss_hash;
static HTAB *pgss_object_hash;
static HTAB *pgss_waiteventshash = NULL;
static pgssWaitEventEntry **pgssWaitEventEntries = NULL;
static HTAB* hash_init(const char *hash_name, int key_size, int entry_size, int hash_size);
static HTAB*
@@ -39,10 +37,10 @@ pgss_startup(void)
int32 i;
/* reset in case this is a restart within the postmaster */
pgss = NULL;
pgss_hash = NULL;
pgss_object_hash = NULL;
pgss_waiteventshash = NULL;
/*
* Create or attach to the shared memory state, including hash table
@@ -68,37 +66,15 @@ pgss_startup(void)
}
pgss_hash = hash_init("pg_stat_monitor: Queries hashtable", sizeof(pgssHashKey), sizeof(pgssEntry),PGSM_MAX);
pgss_waiteventshash = hash_init("pg_stat_monitor: Wait Event hashtable", sizeof(pgssWaitEventKey), sizeof(pgssWaitEventEntry), 100);
pgss_object_hash = hash_init("pg_stat_monitor: Object hashtable", sizeof(pgssObjectHashKey), sizeof(pgssObjectEntry), PGSM_OBJECT_CACHE);
Assert(IsHashInitialize());
pgssWaitEventEntries = malloc(sizeof (pgssWaitEventEntry) * MAX_BACKEND_PROCESES);
for (i = 0; i < MAX_BACKEND_PROCESES; i++)
{
pgssWaitEventKey key;
pgssWaitEventEntry *entry = NULL;
bool found = false;
key.processid = i;
entry = (pgssWaitEventEntry *) hash_search(pgss_waiteventshash, &key, HASH_ENTER, &found);
if (!found)
{
SpinLockInit(&entry->mutex);
pgssWaitEventEntries[i] = entry;
}
}
LWLockRelease(AddinShmemInitLock);
/*
* If we're in the postmaster (or a standalone backend...), set up a shmem
* exit hook to dump the statistics to disk.
*/
if (!IsUnderPostmaster)
on_shmem_exit(pgss_shmem_shutdown, (Datum) 0);
* If we're in the postmaster (or a standalone backend...), set up a shmem
* exit hook to dump the statistics to disk.
*/
on_shmem_exit(pgss_shmem_shutdown, (Datum) 0);
}
int
@@ -117,16 +93,6 @@ HTAB* pgsm_get_hash(void)
return pgss_hash;
}
HTAB* pgsm_get_wait_event_hash(void)
{
return pgss_waiteventshash;
}
pgssWaitEventEntry** pgsm_get_wait_event_entry(void)
{
return pgssWaitEventEntries;
}
/*
* shmem_shutdown hook: Dump statistics into file.
*
@@ -136,12 +102,13 @@ pgssWaitEventEntry** pgsm_get_wait_event_entry(void)
void
pgss_shmem_shutdown(int code, Datum arg)
{
elog(DEBUG2, "pg_stat_monitor: %s()", __FUNCTION__);
printf("--%s", __FUNCTION__);
/* Don't try to dump during a crash. */
if (code)
return;
pgss = NULL;
/* Safety check ... shouldn't get here unless shmem is set up. */
if (!IsHashInitialize())
return;
@@ -220,7 +187,6 @@ hash_entry_reset()
{
HASH_SEQ_STATUS hash_seq;
pgssEntry *entry;
pgssWaitEventEntry *weentry;
LWLockAcquire(pgss->lock, LW_EXCLUSIVE);
@@ -229,14 +195,7 @@ hash_entry_reset()
{
hash_search(pgss_hash, &entry->key, HASH_REMOVE, NULL);
}
hash_seq_init(&hash_seq, pgss_waiteventshash);
while ((weentry = hash_seq_search(&hash_seq)) != NULL)
{
hash_search(pgss_waiteventshash, &weentry->key, HASH_REMOVE, NULL);
}
pgss->current_wbucket = 0;
free(pgssWaitEventEntries);
LWLockRelease(pgss->lock);
}
@@ -314,7 +273,6 @@ IsHashInitialize(void)
{
return (pgss != NULL &&
pgss_hash != NULL &&
pgss_object_hash !=NULL &&
pgss_waiteventshash != NULL);
pgss_object_hash !=NULL);
}