postgresql/src/include/access/hio.h

/*-------------------------------------------------------------------------
 *
 * hio.h
 *	  POSTGRES heap access method input/output definitions.
 *
 *
 * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $Id: hio.h,v 1.20 2001/10/25 05:49:55 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef HIO_H
#define HIO_H

#include "access/htup.h"

extern void RelationPutHeapTuple(Relation relation, Buffer buffer,
					 HeapTuple tuple);
extern Buffer RelationGetBufferForTuple(Relation relation, Size len,
						  Buffer otherBuffer);
#endif	 /* HIO_H */
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 1996-08-27 23:50:29 +02:00			`*`
			`*`
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 1996-08-27 23:50:29 +02:00			`*`
pgindent run on all C files. Java run to follow. initdb/regression tests pass. 2001-10-25 07:50:21 +02:00			`* $Id: hio.h,v 1.20 2001/10/25 05:49:55 momjian Exp $`
Moved from backend/access to include/access 1996-08-27 23:50:29 +02:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
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 1996-08-27 23:50:29 +02:00			`#define HIO_H`

Change #include's to use <> and "" as appropriate. 1999-07-16 01:04:24 +02:00			`#include "access/htup.h"`
Moved from backend/access to include/access 1996-08-27 23:50:29 +02:00
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,`
pgindent run on all C files. Java run to follow. initdb/regression tests pass. 2001-10-25 07:50:21 +02:00			`Buffer otherBuffer);`
OK, folks, here is the pgindent output. 1998-09-01 06:40:42 +02:00			`#endif /* HIO_H */`