diff options
Diffstat (limited to 'src/backend/access/transam/transsup.c')
| -rw-r--r-- | src/backend/access/transam/transsup.c | 33 |
1 files changed, 5 insertions, 28 deletions
diff --git a/src/backend/access/transam/transsup.c b/src/backend/access/transam/transsup.c index 6f1b09b5774..edf953384f9 100644 --- a/src/backend/access/transam/transsup.c +++ b/src/backend/access/transam/transsup.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/access/transam/Attic/transsup.c,v 1.17 1998/09/01 04:27:16 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/access/transam/Attic/transsup.c,v 1.18 1998/12/15 12:45:33 vadim Exp $ * * NOTES * This file contains support functions for the high @@ -290,17 +290,11 @@ TransBlockNumberGetXidStatus(Relation relation, bool localfail; /* bool used if failP = NULL */ /* ---------------- - * SOMEDAY place a read lock on the log relation - * That someday is today 5 Aug 1991 -mer - * ---------------- - */ - RelationSetLockForRead(relation); - - /* ---------------- * get the page containing the transaction information * ---------------- */ buffer = ReadBuffer(relation, blockNumber); + LockBuffer(buffer, BUFFER_LOCK_SHARE); block = BufferGetBlock(buffer); /* ---------------- @@ -318,14 +312,9 @@ TransBlockNumberGetXidStatus(Relation relation, * release the buffer and return the status * ---------------- */ + LockBuffer(buffer, BUFFER_LOCK_UNLOCK); ReleaseBuffer(buffer); - /* ---------------- - * SOMEDAY release our lock on the log relation - * ---------------- - */ - RelationUnsetLockForRead(relation); - return xstatus; } @@ -346,18 +335,11 @@ TransBlockNumberSetXidStatus(Relation relation, bool localfail; /* bool used if failP = NULL */ /* ---------------- - * SOMEDAY gain exclusive access to the log relation - * - * That someday is today 5 Aug 1991 -mer - * ---------------- - */ - RelationSetLockForWrite(relation); - - /* ---------------- * get the block containing the transaction status * ---------------- */ buffer = ReadBuffer(relation, blockNumber); + LockBuffer(buffer, BUFFER_LOCK_EXCLUSIVE); block = BufferGetBlock(buffer); /* ---------------- @@ -372,16 +354,11 @@ TransBlockNumberSetXidStatus(Relation relation, TransBlockSetXidStatus(block, xid, xstatus); + LockBuffer(buffer, BUFFER_LOCK_UNLOCK); if ((*failP) == false) WriteBuffer(buffer); else ReleaseBuffer(buffer); - - /* ---------------- - * SOMEDAY release our lock on the log relation - * ---------------- - */ - RelationUnsetLockForWrite(relation); } /* -------------------------------- |