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Update comments on locks.

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This commit is contained in:
Bruce Momjian 2001-02-23 19:24:06 +00:00
parent 8176465150
commit a37666c2ec
1 changed files with 9 additions and 1 deletions
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10
src/include/storage/lock.h
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: lock.h,v 1.46 2001/02/23 18:28:46 momjian Exp $
* $Id: lock.h,v 1.47 2001/02/23 19:24:06 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -76,6 +76,14 @@ typedef int LOCKMETHOD;
#define USER_LOCKMETHOD 2
#define MIN_LOCKMETHOD DEFAULT_LOCKMETHOD
/* There is normally only one lock method, the default one.
* If user locks are enabled, an additional lock method is present
*
* LOCKMETHODCTL and LOCKMETHODTABLE are split because the first lives
* in shared memory. This is because it contains a spinlock.
* LOCKMETHODTABLE exists in private memory. Both are created by the
* postmaster and should be the same in all backends
*/
/*
* This is the control structure for a lock table. It