diff options
| author | Robert Haas <rhaas@postgresql.org> | 2010-08-13 20:10:54 +0000 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2010-08-13 20:10:54 +0000 |
| commit | debcec7dc31a992703911a9953e299c8d730c778 (patch) | |
| tree | dad0d10ec39eafe0cc254c17e36eb82ec822cdac /src/include/storage/bufmgr.h | |
| parent | 3f9479ef3fdf49fc22088be5268fa536cf5d4efd (diff) | |
| download | postgresql-debcec7dc31a992703911a9953e299c8d730c778.tar.gz | |
Include the backend ID in the relpath of temporary relations.
This allows us to reliably remove all leftover temporary relation
files on cluster startup without reference to system catalogs or WAL;
therefore, we no longer include temporary relations in XLOG_XACT_COMMIT
and XLOG_XACT_ABORT WAL records.
Since these changes require including a backend ID in each
SharedInvalSmgrMsg, the size of the SharedInvalidationMessage.id
field has been reduced from two bytes to one, and the maximum number
of connections has been reduced from INT_MAX / 4 to 2^23-1. It would
be possible to remove these restrictions by increasing the size of
SharedInvalidationMessage by 4 bytes, but right now that doesn't seem
like a good trade-off.
Review by Jaime Casanova and Tom Lane.
Diffstat (limited to 'src/include/storage/bufmgr.h')
| -rw-r--r-- | src/include/storage/bufmgr.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/include/storage/bufmgr.h b/src/include/storage/bufmgr.h index dc4376ee9a..68416ee1b5 100644 --- a/src/include/storage/bufmgr.h +++ b/src/include/storage/bufmgr.h @@ -7,7 +7,7 @@ * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/storage/bufmgr.h,v 1.124 2010/01/23 16:37:12 sriggs Exp $ + * $PostgreSQL: pgsql/src/include/storage/bufmgr.h,v 1.125 2010/08/13 20:10:53 rhaas Exp $ * *------------------------------------------------------------------------- */ @@ -160,7 +160,7 @@ extern Buffer ReadBuffer(Relation reln, BlockNumber blockNum); extern Buffer ReadBufferExtended(Relation reln, ForkNumber forkNum, BlockNumber blockNum, ReadBufferMode mode, BufferAccessStrategy strategy); -extern Buffer ReadBufferWithoutRelcache(RelFileNode rnode, bool isTemp, +extern Buffer ReadBufferWithoutRelcache(RelFileNode rnode, ForkNumber forkNum, BlockNumber blockNum, ReadBufferMode mode, BufferAccessStrategy strategy); extern void ReleaseBuffer(Buffer buffer); @@ -180,8 +180,8 @@ extern BlockNumber BufferGetBlockNumber(Buffer buffer); extern BlockNumber RelationGetNumberOfBlocks(Relation relation); extern void FlushRelationBuffers(Relation rel); extern void FlushDatabaseBuffers(Oid dbid); -extern void DropRelFileNodeBuffers(RelFileNode rnode, ForkNumber forkNum, - bool istemp, BlockNumber firstDelBlock); +extern void DropRelFileNodeBuffers(RelFileNodeBackend rnode, + ForkNumber forkNum, BlockNumber firstDelBlock); extern void DropDatabaseBuffers(Oid dbid); #ifdef NOT_USED |