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79 events for the month beginning 2010-04-01 by user dan

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2010-04-30
17:05
Fix a problem with resizing the wal-index mapping after the mapping has been extended by an external process. (check-in: 79d356fe user: dan tags: wal)
16:50
Fix a problem with calculating the required size of the wal-index when appending frames. (check-in: 9526b111 user: dan tags: wal)
16:41
Fix a problem in the previous commit. Both unixShm.lockState and unixShm.readLock should be set to READ when downgrading from a WRITE to a READ lock (check-in: 90119fec user: dan tags: wal)
16:38
Fix a bug whereby upgrading from a READ_FULL to a WRITE lock, and then back to a read lock was dropping all WAL locks. (check-in: 55f5af5e user: dan tags: wal)
16:24
Reapply commits [837d82a929] and [c05e7dca17] that were accidentally overwritten. (check-in: 598de527 user: dan tags: wal)
16:19
Add xShmXXX() methods to the test VFS in test_devsym.test. (check-in: 1d203424 user: dan tags: wal)
15:49
When closing a WAL connection, attempt an exclusive lock on the database file. If the lock is obtained, checkpoint the database and delete the wal and wal-index files. (check-in: c05e7dca user: dan tags: wal)
15:24
If a reader attempts to upgrade to a writer, but is not reading the most recent database snapshot, return SQLITE_BUSY. (check-in: 837d82a9 user: dan tags: wal)
11:43
Add a missing walIndexUnmap() call to the checkpoint code. Change a couple of SQLITE_CANTOPEN constants to SQLITE_CANTOPEN_BKPT. (check-in: 1f9e8c5c user: dan tags: wal)
10:24
Fix an assert() in sqlite3WalRead(). (check-in: 2e7a0050 user: dan tags: wal)
10:06
Add missing mutexes to unixShmClose(). (check-in: a4741cb5 user: dan tags: wal)
09:52
Fix a couple of assert() statements in os_unix.c and wal.c. Combine sqlite3WalIsDirty() with sqlite3WalUndo(). (check-in: a8f958be user: dan tags: wal)
09:32
Add a missing walIndexUnmap() to sqlite3WalSnapshotOpen(). (check-in: 72b95fde user: dan tags: wal)
06:02
Merge latest bugfix into wal branch. (check-in: 265e66e6 user: dan tags: wal)
06:00 Closed ticket [c39ff61c]: Erroneous FK constraint failure when reusing statement plus 2 other changes (artifact: 07e0b188 user: dan)
05:59 Edit [f660be615a0c1f46|f660be61]: Timestamp 2010-04-30 05:57:56. (artifact: c81af780 user: dan)
05:57
Zero the "immediate FK constraint counter" associated with a statement object when sqlite3_reset() is called. Fix for [c39ff61c43]. (check-in: f660be61 user: dan tags: trunk)
2010-04-29
22:58 Edit [f660be615a0c1f46|f660be61]: Timestamp 2010-04-30 07:57:56. (artifact: 471f0782 user: dan)
22:55 Add attachment fk_bug.c to ticket [c39ff61c] (artifact: ea580399 user: dan)
22:53 New ticket [c39ff61c] Erroneous FK constraint failure when reusing statement. (artifact: 0e827cda user: dan)
14:58
Close all open database connections at the end of wal.test. (check-in: 3cc55a75 user: dan tags: wal)
14:53 Edit [d1cadeed4eea20d8|d1cadeed]: Edit check-in comment. Timestamp 2010-04-29 14:51:33. (artifact: aa69ba77 user: dan)
14:51
Fix a bug in the WAL checkpoint code causing SQLite to use an inconsistent cache in a subsequent transaction. (check-in: d1cadeed user: dan tags: wal)
08:47
Add tests to walthread.test. (check-in: 9e891e75 user: dan tags: wal)
2010-04-28
18:17
Add a test to walthread.test for changing between WAL and rollback modes. (check-in: da229e44 user: dan tags: wal)
17:49
Merge two "wal" leaves. (check-in: 13d2d5a6 user: dan tags: wal)
17:48
Change walthread.test so that tests can be run with either multiple threads or multiple processes. (check-in: 25f85f68 user: dan tags: wal)
2010-04-27
19:13 Edit [be44349d2b790fb4|be44349d]: Edit check-in comment. Timestamp 2010-04-27 18:43:17. (artifact: fbda362c user: dan)
18:49
Merge two "wal" leaves. (check-in: 8c2d43ba user: dan tags: wal)
18:43
Add a test to check that a checkpointer releases its locks before returning, even if it has been prevented by a conflicting lock from checkpointing the database. (check-in: be44349d user: dan tags: wal)
14:37
Fix a problem with identifying a corrupt database in WAL mode. (check-in: c8658da4 user: dan 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)
2010-04-26
17:42
Do not attempt to set journal_mode=wal on :memory: or temp file databases. (check-in: 30d01344 user: dan tags: wal)
16:57
Fixes for problems with small caches and SAVEPOINT rollback in WAL mode. (check-in: 6a944f02 user: dan tags: wal)
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)
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)
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)
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)
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)
12:31
Enhancements to wal-mode locking scheme. (check-in: 8549c286 user: dan tags: wal)
2010-04-16
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
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)
14:28 New ticket [02a8e81d] LIMIT clause on sub-select in FROM clause of a SELECT in a UNION ALL interpreted incorrectly. (artifact: 5b18826a user: dan)
13:33
Merge two leaves on the WAL branch. (check-in: c9ed66cc user: dan tags: wal)
10:58
Change the way checksums are calculated. (check-in: 84955c2e user: dan tags: wal)
2010-04-14
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)
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
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)
17:10 Edit [51a6139508246986|51a61395]: Edit check-in comment. Timestamp 2010-04-12 17:08:45. (artifact: 5072fa36 user: dan)
17:09 Edit [51a6139508246986|51a61395]: Edit check-in comment. Timestamp 2010-04-12 17:08:45. (artifact: cf186cd3 user: dan)
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)
2010-04-07
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)
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