diff options
Diffstat (limited to 'src/backend/storage/buffer/bufmgr.c')
| -rw-r--r-- | src/backend/storage/buffer/bufmgr.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c index d6120affabe..f5d61323310 100644 --- a/src/backend/storage/buffer/bufmgr.c +++ b/src/backend/storage/buffer/bufmgr.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.73 2000/02/17 05:00:38 inoue Exp $ + * $Header: /cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v 1.74 2000/02/21 18:47:03 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -453,6 +453,7 @@ BufferAlloc(Relation reln, */ Assert(buf->refcount == 0); buf->refcount = 1; + Assert(PrivateRefCount[BufferDescriptorGetBuffer(buf) - 1] == 0); PrivateRefCount[BufferDescriptorGetBuffer(buf) - 1] = 1; if (buf->flags & BM_DIRTY) @@ -542,6 +543,7 @@ BufferAlloc(Relation reln, inProgress = FALSE; buf->flags &= ~BM_IO_IN_PROGRESS; TerminateBufferIO(buf); + Assert(PrivateRefCount[BufferDescriptorGetBuffer(buf)-1] == 1); PrivateRefCount[BufferDescriptorGetBuffer(buf) - 1] = 0; buf->refcount--; buf = (BufferDesc *) NULL; @@ -568,6 +570,7 @@ BufferAlloc(Relation reln, { TerminateBufferIO(buf); /* give up the buffer since we don't need it any more */ + Assert(PrivateRefCount[BufferDescriptorGetBuffer(buf)-1] == 1); PrivateRefCount[BufferDescriptorGetBuffer(buf) - 1] = 0; Assert(buf->refcount > 0); buf->refcount--; @@ -1469,8 +1472,16 @@ ReleaseRelationBuffers(Relation rel) if (!(buf->flags & BM_FREE)) { /* Assert checks that buffer will actually get freed! */ - Assert(PrivateRefCount[i - 1] == 1 && - buf->refcount == 1); + Assert(buf->refcount == 1); + if (PrivateRefCount[i - 1] <= 0) + { + fprintf(stderr, "Nonpositive PrivateRefCount on buffer for %s\n", + RelationGetRelationName(rel)); + fflush(stderr); + * ((char *) 0) = 0; + abort(); + } + Assert(PrivateRefCount[i - 1] == 1); /* ReleaseBuffer expects we do not hold the lock at entry */ SpinRelease(BufMgrLock); holding = false; |