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Add a comment noting that the owner_pid test in OwnLatch is just a sanity

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check, per request by Jeff Davis.
This commit is contained in:
Heikki Linnakangas 2010-09-13 18:01:20 +00:00
parent d7a541a9a7
commit c1ba7db6c1
1 changed files with 2 additions and 1 deletions
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3
src/backend/port/unix_latch.c
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@ -77,7 +77,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/port/unix_latch.c,v 1.2 2010/09/11 16:26:04 heikki Exp $
* $PostgreSQL: pgsql/src/backend/port/unix_latch.c,v 1.3 2010/09/13 18:01:20 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@ -156,6 +156,7 @@ OwnLatch(volatile Latch *latch)
if (selfpipe_readfd == -1)
initSelfPipe();
/* sanity check */
if (latch->owner_pid != 0)
elog(ERROR, "latch already owned");
latch->owner_pid = MyProcPid;