database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-12-21 05:21:08 +03:00
Code Activity

Clean up lockmanager data structures some more, in preparation for planned

Browse Source 
rewrite of deadlock checking.  Lock holder objects are now reachable from
the associated LOCK as well as from the owning PROC.  This makes it
practical to find all the processes holding a lock, as well as all those
waiting on the lock.  Also, clean up some of the grottier aspects of the
SHMQueue API, and cause the waitProcs list to be stored in the intuitive
direction instead of the nonintuitive one.  (Bet you didn't know that
the code followed the 'prev' link to get to the next waiting process,
instead of the 'next' link.  It doesn't do that anymore.)
This commit is contained in:
Tom Lane
2001-01-22 22:30:06 +00:00
parent 56f5f2bf82
commit e84c429062
7 changed files with 503 additions and 317 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/include/storage/shmem.h
View File

@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: shmem.h,v 1.24 2000/11/28 23:27:57 tgl Exp $
* $Id: shmem.h,v 1.25 2001/01/22 22:30:06 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -100,9 +100,9 @@ typedef struct
extern void SHMQueueInit(SHM_QUEUE *queue);
extern void SHMQueueElemInit(SHM_QUEUE *queue);
extern void SHMQueueDelete(SHM_QUEUE *queue);
extern void SHMQueueInsertTL(SHM_QUEUE *queue, SHM_QUEUE *elem);
extern void SHMQueueFirst(SHM_QUEUE *queue, Pointer *nextPtrPtr,
SHM_QUEUE *nextQueue);
extern void SHMQueueInsertBefore(SHM_QUEUE *queue, SHM_QUEUE *elem);
extern Pointer SHMQueueNext(SHM_QUEUE *queue, SHM_QUEUE *curElem,
Size linkOffset);
extern bool SHMQueueEmpty(SHM_QUEUE *queue);
#endif /* SHMEM_H */