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Add code to print information about a detected deadlock cycle. The

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printed data is comparable to what you could read in the pg_locks view,
were you fortunate enough to have been looking at it at the right time.
This commit is contained in:
Tom Lane
2003-01-16 21:01:45 +00:00
parent 136828c699
commit 227a404cf4
4 changed files with 166 additions and 12 deletions
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7
src/include/storage/lock.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: lock.h,v 1.67 2002/09/04 20:31:45 momjian Exp $
* $Id: lock.h,v 1.68 2003/01/16 21:01:45 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -243,6 +243,11 @@ extern void GrantLock(LOCK *lock, PROCLOCK *holder, LOCKMODE lockmode);
extern void RemoveFromWaitQueue(PGPROC *proc);
extern int LockShmemSize(int maxBackends);
extern bool DeadLockCheck(PGPROC *proc);
extern void DeadLockReport(void);
extern void RememberSimpleDeadLock(PGPROC *proc1,
LOCKMODE lockmode,
LOCK *lock,
PGPROC *proc2);
extern void InitDeadLockChecking(void);
extern LockData *GetLockStatusData(void);
extern const char *GetLockmodeName(LOCKMODE mode);