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MDEV-19313 Threadpool : provide information schema tables for internals of generic threadpool

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Added thread_pool_groups, thread_pool_queues, thread_pool_waits and
thread_pool_stats tables to information_schema.
This commit is contained in:
Vladislav Vaintroub
2019-05-26 13:25:12 +02:00
parent 5f18bd3a35
commit 2fc13d04d1
7 changed files with 557 additions and 147 deletions
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12
sql/threadpool_common.cc
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@ -23,7 +23,7 @@
#include <sql_audit.h>
#include <debug_sync.h>
#include <threadpool.h>
#include <my_counter.h>
/* Threadpool parameters */
@ -153,9 +153,8 @@ static TP_PRIORITY get_priority(TP_connection *c)
DBUG_ASSERT(c->thd == current_thd);
TP_PRIORITY prio= (TP_PRIORITY)c->thd->variables.threadpool_priority;
if (prio == TP_PRIORITY_AUTO)
{
return c->thd->transaction.is_active() ? TP_PRIORITY_HIGH : TP_PRIORITY_LOW;
}
prio= c->thd->transaction.is_active() ? TP_PRIORITY_HIGH : TP_PRIORITY_LOW;
return prio;
}
@ -463,12 +462,17 @@ void tp_timeout_handler(TP_connection *c)
mysql_mutex_unlock(&thd->LOCK_thd_kill);
}
MY_ALIGNED(CPU_LEVEL1_DCACHE_LINESIZE) Atomic_counter<unsigned long long> tp_waits[THD_WAIT_LAST];
static void tp_wait_begin(THD *thd, int type)
{
TP_connection *c = get_TP_connection(thd);
if (c)
{
DBUG_ASSERT(type > 0 && type < THD_WAIT_LAST);
tp_waits[type]++;
c->wait_begin(type);
}
}