43 Commits (473ac70acae41c5f1fecbb0b57e9f5be5b26ab68)

Author	SHA1	Message	Date
Tom Lane	95a03e9cdf	Another round of code cleanup on bufmgr. Use BM_VALID flag to keep track ... of whether we have successfully read data into a buffer; this makes the error behavior a bit more transparent (IMHO anyway), and also makes it work correctly for local buffers which don't use Start/TerminateBufferIO. Collapse three separate functions for writing a shared buffer into one. This overlaps a bit with cleanups that Neil proposed awhile back, but seems not to have committed yet.	22 years ago
Tom Lane	011c3e62e7	Code review for ARC patch. Eliminate static variables, improve handling ... of VACUUM cases so that VACUUM requests don't affect the ARC state at all, avoid corner case where BufferSync would uselessly rewrite a buffer that no longer contains the page that was to be flushed. Make some minor other cleanups in and around the bufmgr as well, such as moving PinBuffer and UnpinBuffer into bufmgr.c where they really belong.	22 years ago
Jan Wieck	fc65a3e1fd	Fixed bug where FlushRelationBuffers() did call StrategyInvalidateBuffer() ... for already empty buffers because their buffer tag was not cleard out when the buffers have been invalidated before. Also removed the misnamed BM_FREE bufhdr flag and replaced the checks, which effectively ask if the buffer is unpinned, with checks against the refcount field. Jan	22 years ago
Jan Wieck	f425b605f4	Cost based vacuum delay feature. ... Jan	22 years ago
Jan Wieck	dfdd59e918	Adjusted calculation of shared memory requirements to new ... ARC buffer replacement strategy. Jan	22 years ago
PostgreSQL Daemon	969685ad44	$Header: -> $PostgreSQL Changes ...	22 years ago
Peter Eisentraut	c9190ef074	Conditionalize variable that is only used conditionally, to avoid warning.	22 years ago
Jan Wieck	cfeca62148	Background writer process ... This first part of the background writer does no syncing at all. It's only purpose is to keep the LRU heads clean so that regular backends seldom to never have to call write(). Jan	22 years ago
Jan Wieck	1f45555892	Changed parameter name for shared cache status report interval to ... debug_shared_buffers = <seconds> as per previous discussion. Jan	22 years ago
Jan Wieck	6b86d62b00	2nd try for the ARC strategy. ... I added a couple more Assertions while tracking down the exact cause of the former bug. All 93 regression tests pass now. Jan	22 years ago
Jan Wieck	923e994d79	ARC strategy backed out ... sorry ... Jan	22 years ago
Jan Wieck	48adc0b34b	Replacement of the buffer replacement strategy with an ARC ... algorithm adopted for PostgreSQL. Jan	22 years ago
Bruce Momjian	f3c3deb7d0	Update copyrights to 2003.	22 years ago
Tom Lane	cfa191f3b8	Error message editing in backend/storage.	22 years ago
Bruce Momjian	d84fe82230	Update copyright to 2002.	23 years ago
Bruce Momjian	ea08e6cd55	New pgindent run with fixes suggested by Tom. Patch manually reviewed, ... initdb/regression tests pass.	24 years ago
Bruce Momjian	6783b2372e	Another pgindent run. Fixes enum indenting, and improves #endif ... spacing. Also adds space for one-line comments.	24 years ago
Bruce Momjian	b81844b173	pgindent run on all C files. Java run to follow. initdb/regression ... tests pass.	24 years ago
Tom Lane	499abb0c0f	Implement new 'lightweight lock manager' that's intermediate between ... existing lock manager and spinlocks: it understands exclusive vs shared lock but has few other fancy features. Replace most uses of spinlocks with lightweight locks. All remaining uses of spinlocks have very short lock hold times (a few dozen instructions), so tweak spinlock backoff code to work efficiently given this assumption. All per my proposal on pghackers 26-Sep-01.	24 years ago
Tom Lane	55432fedd2	Implement LockBufferForCleanup(), which will allow concurrent VACUUM ... to wait until it's safe to remove tuples and compact free space in a shared buffer page. Miscellaneous small code cleanups in bufmgr, too.	24 years ago
Bruce Momjian	623bf843d2	Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group.	25 years ago
Tom Lane	680b7357ce	Rearrange bufmgr header files so that buf_internals.h need not be ... included by everything that includes bufmgr.h --- it's supposed to be internals, after all, not part of the API! This fixes the conflict against FreeBSD headers reported by Rosenman, by making it unnecessary for s_lock.h to be included by plperl.c.	25 years ago
Tom Lane	1f6d8b90b8	Buffer manager modifications to keep a local buffer-dirtied bit as well ... as a shared dirtybit for each shared buffer. The shared dirtybit still controls writing the buffer, but the local bit controls whether we need to fsync the buffer's file. This arrangement fixes a bug that allowed some required fsyncs to be missed, and should improve performance as well. For more info see my post of same date on pghackers.	26 years ago
Bruce Momjian	5c25d60244	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
Tom Lane	e812458b27	Several changes here, not very related but touching some of the same files. ... * Buffer refcount cleanup (per my "progress report" to pghackers, 9/22). * Add links to backend PROC structs to sinval's array of per-backend info, and use these links for routines that need to check the state of all backends (rather than the slow, complicated search of the ShmemIndex hashtable that was used before). Add databaseOID to PROC structs. * Use this to implement an interlock that prevents DESTROY DATABASE of a database containing running backends. (It's a little tricky to prevent a concurrently-starting backend from getting in there, since the new backend is not able to lock anything at the time it tries to look up its database in pg_database. My solution is to recheck that the DB is OK at the end of InitPostgres. It may not be a 100% solution, but it's a lot better than no interlock at all...) * In ALTER TABLE RENAME, flush buffers for the relation before doing the rename of the physical files, to ensure we don't get failures later from mdblindwrt(). * Update TRUNCATE patch so that it actually compiles against current sources :-(. You should do "make clean all" after pulling these changes.	26 years ago
Bruce Momjian	3406901a29	Move some system includes into c.h, and remove duplicates.	26 years ago
Bruce Momjian	a71802e12e	Final cleanup.	26 years ago
Bruce Momjian	2e6b1e63a3	Remove unused #includes in *.c files.	26 years ago
Bruce Momjian	07842084fe	pgindent run over code.	26 years ago
Bruce Momjian	6724a50787	Change my-function-name-- to my_function_name, and optimizer renames.	27 years ago
Bruce Momjian	fa1a8d6a97	OK, folks, here is the pgindent output.	27 years ago
Bruce Momjian	af74855a60	Renaming cleanup, no pgindent yet.	27 years ago
Bruce Momjian	6bd323c6b3	Remove un-needed braces around single statements.	27 years ago
Bruce Momjian	27db9ecd0b	Fix macros that were not properly surrounded by parens or braces.	27 years ago
Bruce Momjian	679d39b9c8	Goodbye ABORT. Hello ERROR for all errors.	28 years ago
Bruce Momjian	0d9fc5afd6	Change elog(WARN) to elog(ERROR) and elog(ABORT).	28 years ago
Bruce Momjian	075cede748	Add typdefs to pgindent run.	28 years ago
Bruce Momjian	319dbfa736	Another PGINDENT run that changes variable indenting and case label indenting. Also static variable indenting.	28 years ago
Bruce Momjian	1ccd423235	Massive commit to run PGINDENT on all *.c and *.h files.	28 years ago
Bruce Momjian	1d8bbfd2e7	Make functions static where possible, enclose unused functions in #ifdef NOT_USED.	28 years ago
Bruce Momjian	aaeef4d17d	All external function definitions now have prototypes that are checked.	29 years ago
Marc G. Fournier	66637f4a2f	Clean up Makefile ... Add #include "postgres.h" as required Remove #include "utils/elog.h"	29 years ago
Marc G. Fournier	d31084e9d1	Postgres95 1.01 Distribution - Virgin Sources	29 years ago