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| author | Marc G. Fournier <scrappy@hub.org> | 1997-02-12 05:25:13 +0000 |
|---|---|---|
| committer | Marc G. Fournier <scrappy@hub.org> | 1997-02-12 05:25:13 +0000 |
| commit | fb70587c1d5e111dfe63893c4dd934b430267ef5 (patch) | |
| tree | 930f745f0705a3b6da38f83581bd6ee4df7e7582 /src/include/storage/lock.h | |
| parent | ba82bb3eacdeef77377b8a9dc9126c506d3f7b11 (diff) | |
| download | postgresql-fb70587c1d5e111dfe63893c4dd934b430267ef5.tar.gz | |
Patch from Massimo Dal Zotto <dz@cs.unitn.it>
The following patches add to the backend a new debugging flag -K which prints
a debug trace of all locking operations on user relations (those with oid
greater than 20000). The code is compiled only if LOCK_MGR_DEBUG is defined,
so the patch should be harmless if not explicitly enabled.
I'm using the code to trace deadlock conditions caused by application queries
using the command "$POSTMASTER -D $PGDATA -o '-d 1 -K 1'.
The patches are for version 6.0 dated 970126.
Diffstat (limited to 'src/include/storage/lock.h')
| -rw-r--r-- | src/include/storage/lock.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/include/storage/lock.h b/src/include/storage/lock.h index e8c46ce739..49e8915dc7 100644 --- a/src/include/storage/lock.h +++ b/src/include/storage/lock.h @@ -6,7 +6,7 @@ * * Copyright (c) 1994, Regents of the University of California * - * $Id: lock.h,v 1.3 1996/11/05 06:11:00 scrappy Exp $ + * $Id: lock.h,v 1.4 1997/02/12 05:25:13 scrappy Exp $ * *------------------------------------------------------------------------- */ @@ -211,4 +211,8 @@ extern bool LockReleaseAll(LockTableId tableId, SHM_QUEUE *lockQueue); extern int LockShmemSize(void); extern bool LockingDisabled(void); +#ifdef DEADLOCK_DEBUG +extern void DumpLocks(void); +#endif + #endif /* LOCK_H */ |