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postgresql/src/include/access/hio.h

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Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
/*-------------------------------------------------------------------------
*
Change my-function-name-- to my_function_name, and optimizer renames.
1999-02-14 00:22:53 +01:00
* hio.h
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
* POSTGRES heap access method input/output definitions.
Moved from backend/access to include/access
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*
*
Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group.
2001-01-24 20:43:33 +01:00
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
Add: * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
2000-01-26 06:58:53 +01:00
* Portions Copyright (c) 1994, Regents of the University of California
Moved from backend/access to include/access
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*
Further work on connecting the free space map (which is still just a stub) into the rest of the system. Adopt a cleaner approach to preventing deadlock in concurrent heap_updates: allow RelationGetBufferForTuple to select any page of the rel, and put the onus on it to lock both buffers in a consistent order. Remove no-longer-needed isExtend hack from API of ReleaseAndReadBuffer.
2001-06-29 23:08:25 +02:00
* $Id: hio.h,v 1.19 2001/06/29 21:08:25 tgl Exp $
Moved from backend/access to include/access
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*
*-------------------------------------------------------------------------
*/
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 07:04:48 +02:00
#ifndef HIO_H
Moved from backend/access to include/access
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#define HIO_H
Change #include's to use <> and "" as appropriate.
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#include "access/htup.h"
Moved from backend/access to include/access
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pgindent run over code.
1999-05-25 18:15:34 +02:00
extern void RelationPutHeapTuple(Relation relation, Buffer buffer,
HeapTuple tuple);
Repair race condition introduced into heap_update() in 7.1 --- PageGetFreeSpace() was being called while not holding the buffer lock, which not only could yield a garbage answer, but even if it's the right answer there might be less space available after we reacquire the buffer lock. Also repair potential deadlock introduced by my recent performance improvement in RelationGetBufferForTuple(): it was possible for two heap_updates to try to lock two buffers in opposite orders. The fix creates a global rule that buffers of a single heap relation should be locked in decreasing block number order. Currently, this only applies to heap_update; VACUUM can get away with ignoring the rule since it holds exclusive lock on the whole relation anyway. However, if we try to implement a VACUUM that can run in parallel with other transactions, VACUUM will also have to obey the lock order rule.
2001-05-17 00:35:12 +02:00
extern Buffer RelationGetBufferForTuple(Relation relation, Size len,
Further work on connecting the free space map (which is still just a stub) into the rest of the system. Adopt a cleaner approach to preventing deadlock in concurrent heap_updates: allow RelationGetBufferForTuple to select any page of the rel, and put the onus on it to lock both buffers in a consistent order. Remove no-longer-needed isExtend hack from API of ReleaseAndReadBuffer.
2001-06-29 23:08:25 +02:00
Buffer otherBuffer);
Moved from backend/access to include/access
1996-08-27 23:50:29 +02:00
OK, folks, here is the pgindent output.
1998-09-01 06:40:42 +02:00
#endif /* HIO_H */