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postgresql/src/include/utils/inval.h

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More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-27 21:59:28 -04:00
/*-------------------------------------------------------------------------
*
Change my-function-name-- to my_function_name, and optimizer renames.
1999-02-13 18:22:53 -05:00
* inval.h
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 01:04:48 -04:00
* POSTGRES cache invalidation dispatcher definitions.
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-27 21:59:28 -04:00
*
*
Update copyright notices for year 2012.
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* Portions Copyright (c) 1996-2012, 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.
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* Portions Copyright (c) 1994, Regents of the University of California
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-27 21:59:28 -04:00
*
Remove cvs keywords from all files.
2010-09-20 16:08:53 -04:00
* src/include/utils/inval.h
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-27 21:59:28 -04:00
*
*-------------------------------------------------------------------------
*/
Massive commit to run PGINDENT on all *.c and *.h files.
1997-09-07 01:04:48 -04:00
#ifndef INVAL_H
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-27 21:59:28 -04:00
#define INVAL_H
Change #include's to use <> and "" as appropriate.
1999-07-15 19:04:24 -04:00
#include "access/htup.h"
Improve our #include situation by moving pointer types away from the corresponding struct definitions. This allows other headers to avoid including certain highly-loaded headers such as rel.h and relscan.h, instead using just relcache.h, heapam.h or genam.h, which are more lightweight and thus cause less unnecessary dependencies.
2008-06-18 20:46:06 -04:00
#include "utils/relcache.h"
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-27 21:59:28 -04:00
Revise sinval code to remove no-longer-used tuple TID from inval messages. This requires adjusting the API for syscache callback functions: they now get a hash value, not a TID, to identify the target tuple. Most of them weren't paying any attention to that argument anyway, but plancache did require a small amount of fixing. Also, improve performance a trifle by avoiding sending duplicate inval messages when a heap_update isn't changing the catcache lookup columns.
2011-08-16 19:27:46 -04:00
typedef void (*SyscacheCallbackFunction) (Datum arg, int cacheid, uint32 hashvalue);
Improve the plan cache invalidation mechanism to make it invalidate plans when user-defined functions used in a plan are modified. Also invalidate plans when schemas, operators, or operator classes are modified; but for these cases we just invalidate everything rather than tracking exact dependencies, since these types of objects seldom change in a production database. Tom Lane; loosely based on a patch by Martin Pihlak.
2008-09-09 14:58:09 -04:00
typedef void (*RelcacheCallbackFunction) (Datum arg, Oid relid);
Add cache invalidation callback hooks.
2002-04-29 18:14:34 -04:00
Clean up some longstanding problems in shared-cache invalidation. SI messages now include the relevant database OID, so that operations in one database do not cause useless cache flushes in backends attached to other databases. Declare SI messages properly using a union, to eliminate the former assumption that Oid is the same size as int or Index. Rewrite the nearly-unreadable code in inval.c, and document it better. Arrange for catcache flushes at end of command/transaction to happen before relcache flushes do --- this avoids loading a new tuple into the catcache while setting up new relcache entry, only to have it be flushed again immediately.
2001-06-19 15:42:16 -04:00
extern void AcceptInvalidationMessages(void);
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-27 21:59:28 -04:00
Nested transactions. There is still much left to do, especially on the performance front, but with feature freeze upon us I think it's time to drive a stake in the ground and say that this will be in 7.5. Alvaro Herrera, with some help from Tom Lane.
2004-06-30 20:52:04 -04:00
extern void AtStart_Inval(void);
Clean up some longstanding problems in shared-cache invalidation. SI messages now include the relevant database OID, so that operations in one database do not cause useless cache flushes in backends attached to other databases. Declare SI messages properly using a union, to eliminate the former assumption that Oid is the same size as int or Index. Rewrite the nearly-unreadable code in inval.c, and document it better. Arrange for catcache flushes at end of command/transaction to happen before relcache flushes do --- this avoids loading a new tuple into the catcache while setting up new relcache entry, only to have it be flushed again immediately.
2001-06-19 15:42:16 -04:00
Nested transactions. There is still much left to do, especially on the performance front, but with feature freeze upon us I think it's time to drive a stake in the ground and say that this will be in 7.5. Alvaro Herrera, with some help from Tom Lane.
2004-06-30 20:52:04 -04:00
extern void AtSubStart_Inval(void);
extern void AtEOXact_Inval(bool isCommit);
Fix subtransaction behavior for large objects, temp namespace, files, password/group files. Also allow read-only subtransactions of a read-write parent, but not vice versa. These are the reasonably noncontroversial parts of Alvaro's recent mop-up patch, plus further work on large objects to minimize use of the TopTransactionResourceOwner.
2004-07-28 10:23:31 -04:00
extern void AtEOSubXact_Inval(bool isCommit);
Nested transactions. There is still much left to do, especially on the performance front, but with feature freeze upon us I think it's time to drive a stake in the ground and say that this will be in 7.5. Alvaro Herrera, with some help from Tom Lane.
2004-06-30 20:52:04 -04:00
Two-phase commit. Original patch by Heikki Linnakangas, with additional hacking by Alvaro Herrera and Tom Lane.
2005-06-17 18:32:51 -04:00
extern void AtPrepare_Inval(void);
extern void PostPrepare_Inval(void);
Nested transactions. There is still much left to do, especially on the performance front, but with feature freeze upon us I think it's time to drive a stake in the ground and say that this will be in 7.5. Alvaro Herrera, with some help from Tom Lane.
2004-06-30 20:52:04 -04:00
extern void CommandEndInvalidationMessages(void);
Improve cache invalidation handling. Eespecially this would fix TODO * elog() flushes cache, try invalidating just entries from current xact, perhaps using invalidation cache
2000-01-10 01:30:56 -05:00
Revise sinval code to remove no-longer-used tuple TID from inval messages. This requires adjusting the API for syscache callback functions: they now get a hash value, not a TID, to identify the target tuple. Most of them weren't paying any attention to that argument anyway, but plancache did require a small amount of fixing. Also, improve performance a trifle by avoiding sending duplicate inval messages when a heap_update isn't changing the catcache lookup columns.
2011-08-16 19:27:46 -04:00
extern void CacheInvalidateHeapTuple(Relation relation,
HeapTuple tuple,
HeapTuple newtuple);
More cleanups of the include files - centralizing to simplify the -I's required to compile
1996-08-27 21:59:28 -04:00
Create a "relation mapping" infrastructure to support changing the relfilenodes of shared or nailed system catalogs. This has two key benefits: * The new CLUSTER-based VACUUM FULL can be applied safely to all catalogs. * We no longer have to use an unsafe reindex-in-place approach for reindexing shared catalogs. CLUSTER on nailed catalogs now works too, although I left it disabled on shared catalogs because the resulting pg_index.indisclustered update would only be visible in one database. Since reindexing shared system catalogs is now fully transactional and crash-safe, the former special cases in REINDEX behavior have been removed; shared catalogs are treated the same as non-shared. This commit does not do anything about the recently-discussed problem of deadlocks between VACUUM FULL/CLUSTER on a system catalog and other concurrent queries; will address that in a separate patch. As a stopgap, parallel_schedule has been tweaked to run vacuum.sql by itself, to avoid such failures during the regression tests.
2010-02-07 15:48:13 -05:00
extern void CacheInvalidateCatalog(Oid catalogId);
Restructure smgr API as per recent proposal. smgr no longer depends on the relcache, and so the notion of 'blind write' is gone. This should improve efficiency in bgwriter and background checkpoint processes. Internal restructuring in md.c to remove the not-very-useful array of MdfdVec objects --- might as well just use pointers. Also remove the long-dead 'persistent main memory' storage manager (mm.c), since it seems quite unlikely to ever get resurrected.
2004-02-09 20:55:27 -05:00
extern void CacheInvalidateRelcache(Relation relation);
extern void CacheInvalidateRelcacheByTuple(HeapTuple classTuple);
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments.
2001-10-28 01:26:15 -05:00
Make ALTER COLUMN TYPE preserve clustered status for indexes it doesn't modify. Also fix a passel of problems with ALTER TABLE CLUSTER ON: failure to check that the index is safe to cluster on (or even belongs to the indicated rel, or even exists), and failure to broadcast a relcache flush event when changing an index's state.
2004-05-06 12:10:57 -04:00
extern void CacheInvalidateRelcacheByRelid(Oid relid);
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.
2010-08-13 16:10:54 -04:00
extern void CacheInvalidateSmgr(RelFileNodeBackend rnode);
Assorted cleanups in preparation for using a map file to support altering the relfilenode of currently-not-relocatable system catalogs. 1. Get rid of inval.c's dependency on relfilenode, by not having it emit smgr invalidations as a result of relcache flushes. Instead, smgr sinval messages are sent directly from smgr.c when an actual relation delete or truncate is done. This makes considerably more structural sense and allows elimination of a large number of useless smgr inval messages that were formerly sent even in cases where nothing was changing at the physical-relation level. Note that this reintroduces the concept of nontransactional inval messages, but that's okay --- because the messages are sent by smgr.c, they will be sent in Hot Standby slaves, just from a lower logical level than before. 2. Move setNewRelfilenode out of catalog/index.c, where it never logically belonged, into relcache.c; which is a somewhat debatable choice as well but better than before. (I considered catalog/storage.c, but that seemed too low level.) Rename to RelationSetNewRelfilenode. 3. Cosmetic cleanups of some other relfilenode manipulations.
2010-02-02 20:14:17 -05:00
Create a "relation mapping" infrastructure to support changing the relfilenodes of shared or nailed system catalogs. This has two key benefits: * The new CLUSTER-based VACUUM FULL can be applied safely to all catalogs. * We no longer have to use an unsafe reindex-in-place approach for reindexing shared catalogs. CLUSTER on nailed catalogs now works too, although I left it disabled on shared catalogs because the resulting pg_index.indisclustered update would only be visible in one database. Since reindexing shared system catalogs is now fully transactional and crash-safe, the former special cases in REINDEX behavior have been removed; shared catalogs are treated the same as non-shared. This commit does not do anything about the recently-discussed problem of deadlocks between VACUUM FULL/CLUSTER on a system catalog and other concurrent queries; will address that in a separate patch. As a stopgap, parallel_schedule has been tweaked to run vacuum.sql by itself, to avoid such failures during the regression tests.
2010-02-07 15:48:13 -05:00
extern void CacheInvalidateRelmap(Oid databaseId);
Add cache invalidation callback hooks.
2002-04-29 18:14:34 -04:00
extern void CacheRegisterSyscacheCallback(int cacheid,
Improve the plan cache invalidation mechanism to make it invalidate plans when user-defined functions used in a plan are modified. Also invalidate plans when schemas, operators, or operator classes are modified; but for these cases we just invalidate everything rather than tracking exact dependencies, since these types of objects seldom change in a production database. Tom Lane; loosely based on a patch by Martin Pihlak.
2008-09-09 14:58:09 -04:00
SyscacheCallbackFunction func,
pgindent run.
2002-09-04 16:31:48 -04:00
Datum arg);
Add cache invalidation callback hooks.
2002-04-29 18:14:34 -04:00
Improve the plan cache invalidation mechanism to make it invalidate plans when user-defined functions used in a plan are modified. Also invalidate plans when schemas, operators, or operator classes are modified; but for these cases we just invalidate everything rather than tracking exact dependencies, since these types of objects seldom change in a production database. Tom Lane; loosely based on a patch by Martin Pihlak.
2008-09-09 14:58:09 -04:00
extern void CacheRegisterRelcacheCallback(RelcacheCallbackFunction func,
pgindent run.
2002-09-04 16:31:48 -04:00
Datum arg);
Add cache invalidation callback hooks.
2002-04-29 18:14:34 -04:00
Revise sinval code to remove no-longer-used tuple TID from inval messages. This requires adjusting the API for syscache callback functions: they now get a hash value, not a TID, to identify the target tuple. Most of them weren't paying any attention to that argument anyway, but plancache did require a small amount of fixing. Also, improve performance a trifle by avoiding sending duplicate inval messages when a heap_update isn't changing the catcache lookup columns.
2011-08-16 19:27:46 -04:00
extern void CallSyscacheCallbacks(int cacheid, uint32 hashvalue);
Create a "relation mapping" infrastructure to support changing the relfilenodes of shared or nailed system catalogs. This has two key benefits: * The new CLUSTER-based VACUUM FULL can be applied safely to all catalogs. * We no longer have to use an unsafe reindex-in-place approach for reindexing shared catalogs. CLUSTER on nailed catalogs now works too, although I left it disabled on shared catalogs because the resulting pg_index.indisclustered update would only be visible in one database. Since reindexing shared system catalogs is now fully transactional and crash-safe, the former special cases in REINDEX behavior have been removed; shared catalogs are treated the same as non-shared. This commit does not do anything about the recently-discussed problem of deadlocks between VACUUM FULL/CLUSTER on a system catalog and other concurrent queries; will address that in a separate patch. As a stopgap, parallel_schedule has been tweaked to run vacuum.sql by itself, to avoid such failures during the regression tests.
2010-02-07 15:48:13 -05:00
Two-phase commit. Original patch by Heikki Linnakangas, with additional hacking by Alvaro Herrera and Tom Lane.
2005-06-17 18:32:51 -04:00
extern void inval_twophase_postcommit(TransactionId xid, uint16 info,
Standard pgindent run for 8.1.
2005-10-14 22:49:52 -04:00
void *recdata, uint32 len);
Two-phase commit. Original patch by Heikki Linnakangas, with additional hacking by Alvaro Herrera and Tom Lane.
2005-06-17 18:32:51 -04:00
New pgindent run with fixes suggested by Tom. Patch manually reviewed, initdb/regression tests pass.
2001-11-05 12:46:40 -05:00
#endif /* INVAL_H */
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