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Add idle_session_timeout.

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This GUC variable works much like idle_in_transaction_session_timeout,
in that it kills sessions that have waited too long for a new client
query.  But it applies when we're not in a transaction, rather than
when we are.

Li Japin, reviewed by David Johnston and Hayato Kuroda, some
fixes by me

Discussion: https://postgr.es/m/763A0689-F189-459E-946F-F0EC4458980B@hotmail.com
This commit is contained in:
Tom Lane
2021-01-06 18:28:42 -05:00
parent 09cf1d5226
commit 9877374bef
11 changed files with 115 additions and 16 deletions
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10
src/backend/utils/init/postinit.c
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@ -72,6 +72,7 @@ static void ShutdownPostgres(int code, Datum arg);
static void StatementTimeoutHandler(void);
static void LockTimeoutHandler(void);
static void IdleInTransactionSessionTimeoutHandler(void);
static void IdleSessionTimeoutHandler(void);
static bool ThereIsAtLeastOneRole(void);
static void process_startup_options(Port *port, bool am_superuser);
static void process_settings(Oid databaseid, Oid roleid);
@ -619,6 +620,7 @@ InitPostgres(const char *in_dbname, Oid dboid, const char *username,
RegisterTimeout(LOCK_TIMEOUT, LockTimeoutHandler);
RegisterTimeout(IDLE_IN_TRANSACTION_SESSION_TIMEOUT,
IdleInTransactionSessionTimeoutHandler);
RegisterTimeout(IDLE_SESSION_TIMEOUT, IdleSessionTimeoutHandler);
}
/*
@ -1233,6 +1235,14 @@ IdleInTransactionSessionTimeoutHandler(void)
SetLatch(MyLatch);
}
static void
IdleSessionTimeoutHandler(void)
{
IdleSessionTimeoutPending = true;
InterruptPending = true;
SetLatch(MyLatch);
}
/*
* Returns true if at least one role is defined in this database cluster.
*/