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100 check-ins occurring around 82969f27e5ea843c.

2010-04-27
14:37
Fix a problem with identifying a corrupt database in WAL mode. check-in: c8658da4 user: dan tags: wal
11:49
Add the xShmRelease() method to the VFS. The os_unix.c implementation of the shared memory logic is still non-functional. check-in: ed715b47 user: drh tags: wal
06:49
Run trans.test and avtrans.test as part of the "wal" permutation. check-in: c8893310 user: dan tags: wal
05:42
Fix a problem that occurs when one process causes the log-summary file to grow and then a second process attempts to read the database. check-in: b51a5f8b user: dan tags: wal
01:56
Merge in recent changes from the trunk check-in: 7a0ac682 user: drh tags: wal
2010-04-26
19:17
Optimization: Convert an ORDER BY clause into a no-op if the query also contains a GROUP BY clause that will force the same output order. check-in: ca9d86ba user: drh tags: trunk
17:42
Do not attempt to set journal_mode=wal on :memory: or temp file databases. check-in: 30d01344 user: dan tags: wal
17:36
Change the default_cache_size pragma to always store a positive value. check-in: 36fb2cae user: drh tags: trunk
17:30
Identify the SQLite version meta-value entry in the db-header output of showdb. check-in: 245d934b user: drh tags: trunk
16:57
Fixes for problems with small caches and SAVEPOINT rollback in WAL mode. check-in: 6a944f02 user: dan tags: wal
16:47
Further enhancements to the showdb utility: A page number followed by "b" causes a btree decoding to occur on the page. check-in: 2ff824e5 user: drh tags: trunk
15:44
Enhancements to the showdb.c utility program. Automatically detect the page size and adjust the display accordingly. Add the "dbheader" display option. check-in: 23eb408b user: drh tags: trunk
12:39
Add the "wal" permutation to run existing test files savepoint.test and savepoint2.test in WAL mode. check-in: 205e5d8a user: dan tags: wal
10:40
Add mutexes to fix a race condition in wal.c. This isn't a very good fix. check-in: 3d159939 user: dan tags: wal
00:19
Change the names of the log.c and log.h source files to wal.c and wal.h. check-in: 56fe5d76 user: drh tags: wal
00:04
Begin moving WAL-specific I/O into the VFS. This checkin contains VFS infrastructure but it is untested and is not yet hooked up to the WAL. The version number is bumped to 3.7.0 because of the VFS extension. check-in: f5e615c2 user: drh tags: wal
2010-04-25
20:58
Remove an unreachable branch from the function initialization logic. check-in: 064d3ddd user: drh tags: trunk
2010-04-24
19:07
Add comment explaining checksum mechanism. check-in: 3e9ef515 user: dan tags: wal
18:44
Fix bugs in WAL mode rollback. check-in: 31215969 user: dan tags: wal
14:33
Merge with [0291ed974d]. Merge with [0291ed974d]. Merge with [0291ed974d]. check-in: a352f628 user: dan tags: wal
14:02
When commands such as ALTER TABLE and VACUUM use SQL internally, make sure they use only the built-in functions and not application-defined overrides for those functions. check-in: 0291ed97 user: drh tags: trunk
04:53
Merge with [e79dac3c2f]. check-in: 1e793d3a user: dan tags: wal
04:49
Reserve some space at the start of the log-summary file to apply locks to. check-in: a031aa1f user: dan tags: wal
2010-04-23
19:15
Fixes and tests for backup of a WAL database. check-in: 480d12db user: dan tags: wal
14:29
Merge of notify.c changes from experimental. Reset stored blocking connection when registered unlock_notify callback is cleared. check-in: e79dac3c user: shaneh tags: trunk
11:44
Add very simple test cases for backup and VACUUM of WAL databases. More to come. check-in: 1077d813 user: dan tags: wal
2010-04-22
19:14
Create a version of the log checksummer that works on big-endian platforms. Remove the 512KB size limit on the log-summary. check-in: 5d6d4423 user: dan tags: wal
06:27
Further tests and changes related to switching between WAL and rollback modes. check-in: 12363184 user: dan tags: wal
2010-04-21
18:37
Tests for (and changes to) the code to switch between WAL and rollback modes. check-in: 9f4f933f user: dan tags: wal
11:43
If, after obtaining a SHARED lock, there exists a *-wal file in the file-system, use WAL mode. This is necessary to recover from a crash that damages the first page of the database file. check-in: 33cabf27 user: dan tags: wal
06:19
Minor changes to test cases to account for the fact that databases with read/write versions of 2 are now understood. check-in: 278ed41e user: dan tags: wal
2010-04-20
18:53
Use the read and write version fields of the database header to mark a database as operating in wal-mode. check-in: 96bef18c user: dan tags: wal
2010-04-19
18:03
Add the sqlite3_log_hook() interface for scheduling checkpoints. check-in: 9bda6014 user: dan tags: wal
2010-04-17
18:50
Add some comments regarding file-locks to log.c. check-in: 9d51c3b7 user: dan tags: wal
17:34
Do not sync any files in wal mode if "PRAGMA synchronous=off" is set. If files are synced, pass either SQLITE_SYNC_FULL or SQLITE_SYNC_NORMAL to the xSync() callback as configured by "PRAGMA fullfsync". check-in: 0ae91b00 user: dan tags: wal
16:10
It is possible for sqlite3.pUnlockConnection to be non-NULL when sqlite3.pBlockingConnection is NULL, as the notify1.test script demonstrates. Closed-Leaf check-in: 95ff76ef user: drh tags: experimental
15:45
Merge with trunk commit [3e646e3f4c]. check-in: 43463970 user: dan tags: wal
15:42
In synchronous=normal mode, do not sync the log after every transaction. In synchronous=full mode, sync the log and add any extra frames required to avoid blast-radius related problems after each transaction. check-in: 9bc9b684 user: dan tags: wal
12:53
Change sqlite3_step() so that it automatically calls sqlite3_reset() instead of returning SQLITE_MISUSE when invoked on a prepared statement that previously returned any value other than SQLITE_ROW. check-in: 3e646e3f user: drh tags: trunk
12:31
Enhancements to wal-mode locking scheme. check-in: 8549c286 user: dan tags: wal
2010-04-16
22:05
Changes for branch coverage of notify.c. Fixed quirk of unlock_notify() where it would still think it was blocked after a callback was cleared (even after the transaction on the blocking connection was closed). check-in: c54e8dad user: shaneh tags: experimental
13:59
Change the log file format to include a small (12 byte) header at the start of the file. check-in: 9865d14d user: dan tags: wal
11:30
Fix bug in log recovery (last frame in log was being ignored). Also remove an incorrect assert statement. check-in: 67d2a89e user: dan tags: wal
2010-04-15
23:24
Disable query flattening when the outer query is a compound SELECT and the inner query has a LIMIT clause. Ticket [02a8e81d44]. check-in: f96782b3 user: drh tags: trunk
16:45
Allow writers to write dirty pages to the log mid-transaction in order to free memory. check-in: ecd828f9 user: dan tags: wal
13:33
Merge two leaves on the WAL branch. check-in: c9ed66cc user: dan tags: wal
13:29
The query planner fix of check-in [33b1f584ef] should have been on the trunk. check-in: f538d759 user: drh tags: trunk
12:36
Fix a problem in the result set size estimation logic of the query planner - a problem introduced by the two previous changes. check-in: 33b1f584 user: drh tags: wal
10:58
Change the way checksums are calculated. check-in: 84955c2e user: dan tags: wal
02:37
Bring over the recent query planner enhancements from the trunk. check-in: 82969f27 user: drh tags: wal
01:04
Further refinements to table order selection on join query planning. check-in: defaf0d9 user: drh tags: trunk
2010-04-14
19:01
The query planner uses non-indexable WHERE clause terms to reduce the estimated number of output rows, then uses the estimated number of output rows as a tie-breaker when choosing table order. check-in: b87cb0c2 user: drh tags: trunk
18:50
Add tests and fix bugs in WAL locking mechanism. check-in: c18077f2 user: dan tags: wal
18:06
Add tests to check inter-process WAL locking. check-in: 9435f313 user: dan tags: wal
15:49
Improve the logLockRegion() function in log.c. check-in: 5e9dd3bd user: dan tags: wal
11:23
Fixes for locking issues in WAL mode. check-in: a9617eff user: dan tags: wal
2010-04-13
19:27
Add experimental locking scheme. check-in: 3f958e87 user: dan tags: wal
15:30
Fix an uninitialized variable in readDbPage of pager.c. check-in: f4e1150f user: drh tags: wal
11:56
Remove old code to interpret an argument (no longer used) to "PRAGMA checkpoint". check-in: 27dc5977 user: dan tags: wal
11:45
Fix other problems in the WAL test scripts. check-in: dcb31181 user: dan tags: wal
11:35
Fix test script issues preventing walthread.test from running. check-in: d90b1dde user: dan tags: wal
11:18
Fix a pager bug introduced by the wal code. check-in: 4a0b29dc user: dan tags: wal
06:20
Sync wal branch with [012cf101bf]. check-in: 9d690f24 user: dan tags: wal
06:18
Test that the rollback-hook is invoked if a commit-hook implementation returns non-zero (causing a rollback). Remove documentation comment that says otherwise from sqlite.h.in. check-in: 012cf101 user: dan tags: trunk
2010-04-12
20:54
Add e_fts3.test to the set of tests excluded from the inmemory_journal exclusion list, since it does simulated OOM errors which trigger I/O errors and SQLite is unable to recover from I/O errors without a persistent journal. check-in: e7e7127f user: drh tags: trunk
19:44
Recent changes cause the xSync method of the memory journal implementation to be used, so remove the assert(0). check-in: 1f2cb940 user: drh tags: trunk
19:43
Clear a global variable in e_fts3.test before it is used. check-in: ae89dfd2 user: drh tags: trunk
19:32
Remove duplicate secure_delete pragma implemention. check-in: c15fda14 user: drh tags: wal
19:05
Add "log.h", which should have been part of the previous commit. check-in: 8de9f010 user: dan tags: wal
19:00
Import experimental write-ahead-logging code. check-in: 409d61ba user: dan tags: wal
17:08
Fix a problem where a process in exclusive mode could delete a hot-journal file without rolling it back from within sqlite3_close() or DETACH. This problem was introduced by commits from the past few days; it is not present in any release. check-in: 51a61395 user: dan tags: trunk
14:51
Reset the simulated device in the test harness to its default configuration whenever it is restarted. check-in: 562d20e6 user: drh tags: trunk
2010-04-10
17:52
Fix issues and clarify the operation of pager_playback_one_page(). A block comment in pager.c identifies 13 invariants on the pager subsystem. Ticket [9d68c883132c8]. check-in: 09065976 user: drh tags: trunk
2010-04-09
23:05
Add a test case for the OOM-fault corruption issue. Ticket [9d68c883132c8]. check-in: 0a64a937 user: drh tags: trunk
15:34
Candidate fix for a pager bug associated with sqlite3PagerMovepage(). check-in: 8c046eb6 user: drh tags: trunk
09:14
Avoid unnecessary calls to sqlite3_step() with null prepared statements while parsing the schema. check-in: ae04d2d1 user: drh tags: trunk
2010-04-08
17:35
Fix a typo in a comment. No changes to code. check-in: 332cb551 user: drh tags: trunk
17:28
Fix code coverage problems in where.c. check-in: b04a5282 user: drh tags: trunk
16:30
Additional automatic index tests. check-in: 99d8e325 user: drh tags: trunk
15:01
New test cases for automatic indices. New testcase() macros associated with column-used bitmasks. check-in: e1aa48ac user: drh tags: trunk
15:01
Fix the computation of the number of rows in a table during automatic index generation. check-in: edeab06a user: drh tags: trunk
14:38
Fix an integer overflow bug in the automatic index logic. The bug was detected by the testcase() macros added in the previous check-in. Also add some more testcase() macros, since this issue points up their importance. check-in: af97b488 user: drh tags: trunk
14:15
Add testcase() macros to the automatic index logic to insure that boundary cases are tested. check-in: 72865478 user: drh tags: trunk
11:35
Make sure F_OK, R_OK, and W_OK are defined in test_demovfs.c. Define them manually if they are not. This is necessary to get the module to compile on some systems. check-in: 7c8afc32 user: drh tags: trunk
01:16
Merge automatic index changes into the trunk. check-in: bf7b8d86 user: drh tags: trunk
00:40
When constructing automatic indices do not include the same column more than once. Closed-Leaf check-in: d067d9f7 user: drh tags: experimental
2010-04-07
20:32
Pull over the latest changes from the trunk. check-in: e388fe8b user: drh tags: experimental
20:29
When rolling back a savepoint to the beginning of the transaction, make sure to initialize the database size in the btree layer correctly even if the database size field of the header is zeroed. check-in: a3540c6a user: drh tags: trunk
19:32
Add an interface to the SQLITE_STMTSTATUS_AUTOINDEX status information to the TCL bindings. Add some simple automatic index test cases. check-in: 1f404412 user: drh tags: experimental
16:54
Wrap all automatic index changes inside SQLITE_OMIT_AUTOMATIC_INDEX. Add the automatic_index PRAGMA to turn it on and off. check-in: a811a47f user: drh tags: experimental
14:59
Make sure that all automatic indices are covering indices. Otherwise, the table and index might be used together in a query but the table could get out of sync with the automatic index through out-of-band changes. check-in: 23643131 user: drh tags: experimental
14:33
Enhance comments on the SrcList object definition to better explain the operation of the SrcList.a[].colUsed field. No changes to code. check-in: c0f67ea1 user: drh tags: experimental
14:32
Fix the trace output of the OP_Function opcode to show the correct register numbers. check-in: 064c283e user: drh tags: experimental
07:57
Add file test_demovfs.c, containing a simple VFS implementation that demonstrates how writes to the journal file may be safely buffered by the VFS layer to improve performance on some embedded systems. check-in: af3b72d9 user: dan tags: trunk
2010-04-06
22:33
Veryquick.test is now working. The SQLITE_STMTSTATUS_AUTOINDEX counter added. check-in: abbf16e5 user: drh tags: experimental
18:51
Runs quicktest without hitting an assert now. Some tests get unexpected results still and there is a memory leak. check-in: a8224448 user: drh tags: experimental
18:28
Progress toward getting automatic indices to work. Still failing in corner cases. check-in: ac6d0fba user: drh tags: experimental
15:57
Automatically generate transient indices for tables in joins that would otherwise have to use a full table scan. check-in: 1b2a0412 user: drh tags: experimental
2010-04-05
15:11
Minor comment changes to the OP_OpenEphemeral header. No changes to code. check-in: 8e1d7ef4 user: drh tags: trunk
2010-04-03
13:08
Silently abandon a rollback if the journal has been truncated. check-in: 7626f6c9 user: drh tags: trunk