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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2002-12-15 21:01:34 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2002-12-15 21:01:34 +0000 |
| commit | e64c7feb2fd80c89d2220cbe9e026a031f34509c (patch) | |
| tree | b7842bbf8efc3b7849b29c8a1b67a4a196f9ee2e /src/include/nodes/execnodes.h | |
| parent | 5bab36e9f6c3f3a9e14a89e1124179a339d2c3a1 (diff) | |
| download | postgresql-e64c7feb2fd80c89d2220cbe9e026a031f34509c.tar.gz postgresql-e64c7feb2fd80c89d2220cbe9e026a031f34509c.zip | |
Tweak default memory context allocation policy so that a context is not
given any malloc block until something is first allocated in it; but
thereafter, MemoryContextReset won't release that first malloc block.
This preserves the quick-reset property of the original policy, without
forcing 8K to be allocated to every context whether any of it is ever
used or not. Also, remove some more no-longer-needed explicit freeing
during ExecEndPlan.
Diffstat (limited to 'src/include/nodes/execnodes.h')
| -rw-r--r-- | src/include/nodes/execnodes.h | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h index 65c5f23884d..b57d7ac58cc 100644 --- a/src/include/nodes/execnodes.h +++ b/src/include/nodes/execnodes.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: execnodes.h,v 1.86 2002/12/15 16:17:56 tgl Exp $ + * $Id: execnodes.h,v 1.87 2002/12/15 21:01:34 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -218,16 +218,7 @@ typedef struct ProjectionInfo * cleanMap: A map with the correspondence between the non-junk * attribute numbers of the "original" tuple and the * attribute numbers of the "clean" tuple. - * junkContext: memory context holding the JunkFilter node and all - * its subsidiary data structures. * resultSlot: tuple slot that can be used to hold cleaned tuple. - * - * NOTE: the original targetList and tupType are passed to ExecInitJunkFilter, - * as is the resultSlot. These items do not belong to the JunkFilter. All - * the other subsidiary structures are created during ExecInitJunkFilter, - * and all of them can be freed by deleting the memory context junkContext. - * This would not be needed if we had a cleaner approach to managing - * query-lifetime data structures... * ---------------- */ typedef struct JunkFilter @@ -240,7 +231,6 @@ typedef struct JunkFilter int jf_cleanLength; TupleDesc jf_cleanTupType; AttrNumber *jf_cleanMap; - MemoryContext jf_junkContext; TupleTableSlot *jf_resultSlot; } JunkFilter; |