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I've just seen what happens when the MEMORY_CONTEXT_CHECKING code fires

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an error at end of transaction ... and I did *not* like it.  Reduce ERROR
to NOTICE so that this situation doesn't cause an infinite loop.
This commit is contained in:
Tom Lane 2000-12-05 23:40:36 +00:00
parent 614d951a54
commit a0f863637f
1 changed files with 13 additions and 9 deletions
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22
src/backend/utils/mmgr/aset.c
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@ -11,7 +11,7 @@
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/mmgr/aset.c,v 1.34 2000/12/01 18:14:29 tgl Exp $ * $Header: /cvsroot/pgsql/src/backend/utils/mmgr/aset.c,v 1.35 2000/12/05 23:40:36 tgl Exp $
* *
* NOTE: * NOTE:
* This is a new (Feb. 05, 1999) implementation of the allocation set * This is a new (Feb. 05, 1999) implementation of the allocation set
@ -719,7 +719,7 @@ AllocSetFree(MemoryContext context, void *pointer)
/* Test for someone scribbling on unused space in chunk */ /* Test for someone scribbling on unused space in chunk */
if (chunk->requested_size < chunk->size) if (chunk->requested_size < chunk->size)
if (((char *) pointer)[chunk->requested_size] != 0x7E) if (((char *) pointer)[chunk->requested_size] != 0x7E)
elog(ERROR, "AllocSetFree: detected write past chunk end in %s %p", elog(NOTICE, "AllocSetFree: detected write past chunk end in %s %p",
set->header.name, chunk); set->header.name, chunk);
#endif #endif
@ -793,7 +793,7 @@ AllocSetRealloc(MemoryContext context, void *pointer, Size size)
/* Test for someone scribbling on unused space in chunk */ /* Test for someone scribbling on unused space in chunk */
if (chunk->requested_size < oldsize) if (chunk->requested_size < oldsize)
if (((char *) pointer)[chunk->requested_size] != 0x7E) if (((char *) pointer)[chunk->requested_size] != 0x7E)
elog(ERROR, "AllocSetRealloc: detected write past chunk end in %s %p", elog(NOTICE, "AllocSetRealloc: detected write past chunk end in %s %p",
set->header.name, chunk); set->header.name, chunk);
#endif #endif
@ -923,6 +923,10 @@ AllocSetStats(MemoryContext context)
/* /*
* AllocSetCheck * AllocSetCheck
* Walk through chunks and check consistency of memory. * Walk through chunks and check consistency of memory.
*
* NOTE: report errors as NOTICE, *not* ERROR or FATAL. Otherwise you'll
* find yourself in an infinite loop when trouble occurs, because this
* routine will be entered again when elog cleanup tries to release memory!
*/ */
static void static void
AllocSetCheck(MemoryContext context) AllocSetCheck(MemoryContext context)
@ -966,16 +970,16 @@ AllocSetCheck(MemoryContext context)
* Check chunk size * Check chunk size
*/ */
if (dsize > chsize) if (dsize > chsize)
elog(ERROR, "AllocSetCheck(): %s: req size > alloc size for chunk %p in block %p", elog(NOTICE, "AllocSetCheck(): %s: req size > alloc size for chunk %p in block %p",
name, chunk, block); name, chunk, block);
if (chsize < (1 << ALLOC_MINBITS)) if (chsize < (1 << ALLOC_MINBITS))
elog(ERROR, "AllocSetCheck(): %s: bad size %lu for chunk %p in block %p", elog(NOTICE, "AllocSetCheck(): %s: bad size %lu for chunk %p in block %p",
name, (unsigned long) chsize, chunk, block); name, (unsigned long) chsize, chunk, block);
/* single-chunk block? */ /* single-chunk block? */
if (chsize > ALLOC_CHUNK_LIMIT && if (chsize > ALLOC_CHUNK_LIMIT &&
chsize + ALLOC_CHUNKHDRSZ != blk_used) chsize + ALLOC_CHUNKHDRSZ != blk_used)
elog(ERROR, "AllocSetCheck(): %s: bad single-chunk %p in block %p", elog(NOTICE, "AllocSetCheck(): %s: bad single-chunk %p in block %p",
name, chunk, block); name, chunk, block);
/* /*
@ -984,14 +988,14 @@ AllocSetCheck(MemoryContext context)
* can't check as easily...) * can't check as easily...)
*/ */
if (dsize > 0 && chunk->aset != (void *) set) if (dsize > 0 && chunk->aset != (void *) set)
elog(ERROR, "AllocSetCheck(): %s: bogus aset link in block %p, chunk %p", elog(NOTICE, "AllocSetCheck(): %s: bogus aset link in block %p, chunk %p",
name, block, chunk); name, block, chunk);
/* /*
* Check for overwrite of "unallocated" space in chunk * Check for overwrite of "unallocated" space in chunk
*/ */
if (dsize > 0 && dsize < chsize && *chdata_end != 0x7E) if (dsize > 0 && dsize < chsize && *chdata_end != 0x7E)
elog(ERROR, "AllocSetCheck(): %s: detected write past chunk end in block %p, chunk %p", elog(NOTICE, "AllocSetCheck(): %s: detected write past chunk end in block %p, chunk %p",
name, block, chunk); name, block, chunk);
blk_data += chsize; blk_data += chsize;
@ -1001,7 +1005,7 @@ AllocSetCheck(MemoryContext context)
} }
if ((blk_data + (nchunks * ALLOC_CHUNKHDRSZ)) != blk_used) if ((blk_data + (nchunks * ALLOC_CHUNKHDRSZ)) != blk_used)
elog(ERROR, "AllocSetCheck(): %s: found inconsistent memory block %p", elog(NOTICE, "AllocSetCheck(): %s: found inconsistent memory block %p",
name, block); name, block);
} }
} }