198 Commits (b5aad11a1b253bbd45405dc926f1ebef90f8f28c)

Author	SHA1	Message	Date
Bruce Momjian	4b2c2850bf	Clean up #include in /include directory. Add scripts for checking includes.	27 years ago
Bruce Momjian	0cf1b79528	Cleanup of /include #include's, for 6.6 only.	27 years ago
Bruce Momjian	8aa780bdd3	cleanup	27 years ago
Bruce Momjian	d20abcd8c5	typo fix.	27 years ago
Vadim B. Mikheev	78f7ccc982	1. Fix for elog(ERROR, "EvalPlanQual: t_xmin is uncommitted ?!") ... and possibly for other cases too: DO NOT cache status of transaction in unknown state (i.e. non-committed and non-aborted ones) Example: T1 reads row updated/inserted by running T2 and cache T2 status. T2 commits. Now T1 reads a row updated by T2 and with HEAP_XMAX_COMMITTED in t_infomask (so cached T2 status is not changed). Now T1 EvalPlanQual gets updated row version without HEAP_XMIN_COMMITTED -> TransactionIdDidCommit(t_xmin) and TransactionIdDidAbort(t_xmin) return FALSE and T2 decides that t_xmin is not committed and gets ERROR above. It's too late to find more smart way to handle such cases and so I just changed xact status caching and got rid TransactionIdFlushCache() from code. Changed: transam.c, xact.c, lmgr.c and transam.h - last three just because of TransactionIdFlushCache() is removed. 2. heapam.c: T1 marked a row for update. T2 waits for T1 commit/abort. T1 commits. T3 updates the row before T2 locks row page. Now T2 sees that new row t_xmax is different from xact id (T1) T2 was waiting for. Old code did Assert here. New one goes to HeapTupleSatisfiesUpdate. Obvious changes too. 3. Added Assert to vacuum.c 4. bufmgr.c: break Assert(buf->r_locks == 0 && !buf->ri_lock) into two Asserts.	27 years ago
Bruce Momjian	07842084fe	pgindent run over code.	27 years ago
Vadim B. Mikheev	fdf6be80f9	1. Vacuum is updated for MVCC. ... 2. Much faster btree tuples deletion in the case when first on page index tuple is deleted (no movement to the left page(s)). 3. Remember blkno of new root page in BTPageOpaque of left/right siblings when root page is splitted.	27 years ago
Bruce Momjian	6724a50787	Change my-function-name-- to my_function_name, and optimizer renames.	27 years ago
Vadim B. Mikheev	e3a1ab764e	READ COMMITTED isolevel is implemented and is default now.	27 years ago
Vadim B. Mikheev	3f7fbf85dc	Initial MVCC code. ... New code for locking buffer' context.	27 years ago
Vadim B. Mikheev	6beba218d7	New HeapTuple structure/interface.	27 years ago
Bruce Momjian	beac8c1c46	Fix for vacuum and cache use. Fix for BSDI 4.0.	28 years ago
Bruce Momjian	173c555948	Make functions static or ifdef NOT_USED. Prevent pg_version creation.	28 years ago
Bruce Momjian	fa1a8d6a97	OK, folks, here is the pgindent output.	28 years ago
Bruce Momjian	af74855a60	Renaming cleanup, no pgindent yet.	28 years ago
Bruce Momjian	4a70002149	fix for index problem.	28 years ago
Bruce Momjian	7971539020	heap_fetch requires buffer pointer, must be released; heap_getnext ... no longer returns buffer pointer, can be gotten from scan; descriptor; bootstrap can create multi-key indexes; pg_procname index now is multi-key index; oidint2, oidint4, oidname are gone (must be removed from regression tests); use System Cache rather than sequential scan in many places; heap_modifytuple no longer takes buffer parameter; remove unused buffer parameter in a few other functions; oid8 is not index-able; remove some use of single-character variable names; cleanup Buffer variables usage and scan descriptor looping; cleaned up allocation and freeing of tuples; 18k lines of diff;	28 years ago
Vadim B. Mikheev	be8300b18f	Use Snapshot in heap access methods.	28 years ago
Bruce Momjian	0da6358f37	Cleanup use of 16 that should be NAMEDATALEN.	28 years ago
Bruce Momjian	fce7556d33	Change error message and remove non-functional update message, from ... Vadim.	28 years ago
Bruce Momjian	6bd323c6b3	Remove un-needed braces around single statements.	28 years ago
Bruce Momjian	a32450a585	pgindent run before 6.3 release, with Thomas' requested changes.	28 years ago
Bruce Momjian	24cab6bd0d	Goodbye register keyword. Compiler knows better.	28 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	0889dcd6f7	Remove archive stuff.	28 years ago
Bruce Momjian	e9e1ff226f	Remove all time travel stuff. Small parser cleanup.	28 years ago
Vadim B. Mikheev	32cd09ac6d	Good Bye, Time Travel!	29 years ago
Bruce Momjian	8cb4154492	Inline frequently called functions.	29 years ago
Bruce Momjian	59f6a57e59	Used modified version of indent that understands over 100 typedefs.	29 years ago
Bruce Momjian	075cede748	Add typdefs to pgindent run.	29 years ago
Bruce Momjian	319dbfa736	Another PGINDENT run that changes variable indenting and case label indenting. Also static variable indenting.	29 years ago
Bruce Momjian	1ccd423235	Massive commit to run PGINDENT on all *.c and *.h files.	29 years ago
Vadim B. Mikheev	40ac5a692b	heap_delete returns int now (for non-functional deletes).	29 years ago
Bruce Momjian	1d8bbfd2e7	Make functions static where possible, enclose unused functions in #ifdef NOT_USED.	29 years ago
Bruce Momjian	ea5b5357cd	Remove more (void) and fix -Wall warnings.	29 years ago
Vadim B. Mikheev	b3d8beaa1a	Catch non-functional delete attempts.	29 years ago
Marc G. Fournier	159f8c63ad	From: Dan McGuirk <mcguirk@indirect.com> ... Reply-To: hackers@hub.org, Dan McGuirk <mcguirk@indirect.com> To: hackers@hub.org Subject: [HACKERS] tmin writeback optimization I was doing some profiling of the backend, and noticed that during a certain benchmark I was running somewhere between 30% and 75% of the backend's CPU time was being spent in calls to TransactionIdDidCommit() from HeapTupleSatisfiesNow() or HeapTupleSatisfiesItself() to determine that changed rows' transactions had in fact been committed even though the rows' tmin values had not yet been set. When a query looks at a given row, it needs to figure out whether the transaction that changed the row has been committed and hence it should pay attention to the row, or whether on the other hand the transaction is still in progress or has been aborted and hence the row should be ignored. If a tmin value is set, it is known definitively that the row's transaction has been committed. However, if tmin is not set, the transaction referred to in xmin must be looked up in pg_log, and this is what the backend was spending a lot of time doing during my benchmark. So, implementing a method suggested by Vadim, I created the following patch that, the first time a query finds a committed row whose tmin value is not set, sets it, and marks the buffer where the row is stored as dirty. (It works for tmax, too.) This doesn't result in the boost in real time performance I was hoping for, however it does decrease backend CPU usage by up to two-thirds in certain situations, so it could be rather beneficial in high-concurrency settings.	29 years ago
Bruce Momjian	94515e3522	Removed unlinked patch that is not neede now that Vadim has properly fixed it.	29 years ago
Bruce Momjian	6da0055274	Fix for SELECT INTO ... GROUP/ORDER BY where table already exists unlink error.	29 years ago
Marc G. Fournier	466f5fd729	More cleanups	30 years ago
Marc G. Fournier	302b809793	Changes required so that access/* compiles cleanly... ... cleaning up behind myself before *yawn* bed :)	30 years ago
Marc G. Fournier	f578f8fb68	Cleaned out -I../.. -I../../include from Makefile ... Added missing include files	30 years ago
Marc G. Fournier	b446f38510	-Wall'd	30 years ago
Marc G. Fournier	5a0b450c78	First pass at fixing my own mistakes ... Mainly...fix up the includes I removed, as well as prototypes Pointed out by D'Arcy	30 years ago
Marc G. Fournier	dd007d4c39	Another directory cleaned out	30 years ago
Marc G. Fournier	208a30f23d	The patch does several things: ... It adds a WITH OIDS option to the copy command, which allows dumping and loading of oids. If a copy command tried to load in an oid that is greater than its current system max oid, the system max oid is incremented. No checking is done to see if other backends are running and have cached oids. pg_dump as its first step when using the -o (oid) option, will copy in a dummy row to set the system max oid value so as rows are loaded in, they are certain to be lower than the system oid. pg_dump now creates indexes at the end to speed loading Submitted by: Bruce Momjian <maillist@candle.pha.pa.us>	30 years ago
Marc G. Fournier	d31084e9d1	Postgres95 1.01 Distribution - Virgin Sources	30 years ago