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On Win32, make minimum setitimer() sleep be 1ms, so sleeps < 1ms aren't 

rounded down to zero.

Backpatch to 8.1.X.
This commit is contained in:
Bruce Momjian 2006-08-09 20:40:56 +00:00
parent 64214a2f01
commit 0553a0507c
1 changed files with 7 additions and 1 deletions
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8
src/backend/port/win32/timer.c
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@ -11,7 +11,7 @@
* Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/port/win32/timer.c,v 1.10 2006/08/09 17:47:03 momjian Exp $ * $PostgreSQL: pgsql/src/backend/port/win32/timer.c,v 1.11 2006/08/09 20:40:56 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -56,8 +56,14 @@ pg_timer_thread(LPVOID param)
timerCommArea.value.it_value.tv_usec == 0) timerCommArea.value.it_value.tv_usec == 0)
waittime = INFINITE; /* Cancel the interrupt */ waittime = INFINITE; /* Cancel the interrupt */
else else
{
/* Minimum wait time is 1ms */
if (timerCommArea.value.it_value.tv_sec == 0 &&
timerCommArea.value.it_value.tv_usec < 1000)
timerCommArea.value.it_value.tv_usec = 1000;
/* WaitForSingleObjectEx() uses milliseconds */ /* WaitForSingleObjectEx() uses milliseconds */
waittime = timerCommArea.value.it_value.tv_usec / 1000 + timerCommArea.value.it_value.tv_sec * 1000; waittime = timerCommArea.value.it_value.tv_usec / 1000 + timerCommArea.value.it_value.tv_sec * 1000;
}
ResetEvent(timerCommArea.event); ResetEvent(timerCommArea.event);
LeaveCriticalSection(&timerCommArea.crit_sec); LeaveCriticalSection(&timerCommArea.crit_sec);
} }