postgres/src/include/access/hio.h

/*-------------------------------------------------------------------------
 *
 * hio.h
 *	  POSTGRES heap access method input/output definitions.
 *
 *
 * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $PostgreSQL: pgsql/src/include/access/hio.h,v 1.32 2006/07/13 17:47:01 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef HIO_H
#define HIO_H

#include "access/htup.h"
#include "utils/rel.h"
#include "storage/buf.h"

extern void RelationPutHeapTuple(Relation relation, Buffer buffer,
					 HeapTuple tuple);
extern Buffer RelationGetBufferForTuple(Relation relation, Size len,
					Buffer otherBuffer, bool use_fsm);

#endif   /* HIO_H */
Moved from backend/access to include/access 30 years ago			`/*-------------------------------------------------------------------------`
			`*`
Change my-function-name-- to my_function_name, and optimizer renames. 27 years ago			`* hio.h`
Massive commit to run PGINDENT on all .c and .h files. 29 years ago			`* POSTGRES heap access method input/output definitions.`
Moved from backend/access to include/access 30 years ago			`*`
			`*`
Update copyright for 2006. Update scripts. 20 years ago			`* Portions Copyright (c) 1996-2006, 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. 26 years ago			`* Portions Copyright (c) 1994, Regents of the University of California`
Moved from backend/access to include/access 30 years ago			`*`
More include file adjustments. 20 years ago			`* $PostgreSQL: pgsql/src/include/access/hio.h,v 1.32 2006/07/13 17:47:01 momjian Exp $`
Moved from backend/access to include/access 30 years ago			`*`
			`*-------------------------------------------------------------------------`
			`*/`
Massive commit to run PGINDENT on all .c and .h files. 29 years ago			`#ifndef HIO_H`
Moved from backend/access to include/access 30 years ago			`#define HIO_H`

Change #include's to use <> and "" as appropriate. 27 years ago			`#include "access/htup.h"`
More include file adjustments. 20 years ago			`#include "utils/rel.h"`
			`#include "storage/buf.h"`
Moved from backend/access to include/access 30 years ago
pgindent run over code. 27 years ago			`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. 25 years ago			`extern Buffer RelationGetBufferForTuple(Relation relation, Size len,`
Add FILLFACTOR to CREATE INDEX. ITAGAKI Takahiro 20 years ago			`Buffer otherBuffer, bool use_fsm);`
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments. 25 years ago
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass. 24 years ago			`#endif /* HIO_H */`