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103 check-ins tagged with "wal"

2010-05-03
14:05
If the sqlite3_wal_checkpoint() API is passed a NULL pointer in place of a database name, attempt to checkpoint all attached databases. Closed-Leaf check-in: 27a5c09c user: dan tags: wal
13:37
Make sure the mutex is held while calling sqlite3ApiExit() in sqlite3_wal_checkpoint(). Other cleanup of WAL logic. check-in: 11a85b82 user: drh tags: wal
12:14
Have sqlite3_wal_checkpoint() populate the database handle error message and error code (as returned by sqlite3_errmsg() and sqlite3_errcode()). check-in: ff234cf5 user: dan tags: wal
11:05
Add the "PRAGMA wal_autocheckpoint" command. Rename "PRAGMA checkpoint" to "PRAGMA wal_checkpoint". check-in: 714e5947 user: dan tags: wal
08:19
Merge two wal leaves. check-in: 23c0e6c3 user: dan tags: wal
08:04
Add the sqlite3_wal_checkpoint() and sqlite3_wal_autocheckpoint() APIs. check-in: 9803196d user: dan tags: wal
2010-05-01
20:17
Change the SHM interface so that it does not take the name of the shared object but rather the name of the WAL file and derives its own name from that. Remove the xShmDelete method from the VFS and replace it with a delete flag on xShmClose. check-in: 94dea5f9 user: drh tags: wal
18:23
Remove the xShmPush and xShmPull methods from the VFS. check-in: 69e07fdb user: drh tags: wal
17:57
Define an invariant to guarantee deadlock-free operation of SHM in os_unix.c and check that invariant with assert() statements. check-in: 6af2dca7 user: drh tags: wal
17:50
Rework mutexes on the SHM implemention for os_unix to avoid a deadlock during WAL recovery. check-in: 1a0f69be user: drh tags: wal
16:40
Support compile-time option SQLITE_OMIT_WAL, for building without WAL support. check-in: 9b230c43 user: dan tags: wal
11:33
Fix a typo in the walmode.test test script introducted yesterday. check-in: dcabc90c user: drh tags: wal
11:19
Fix the sqlite3_mutex_alloc() interface to return NULL (not segfault) when operating in threadsafe mode. (This is a general-purpose bug fix which really ought to be ported to trunk.) check-in: 64840a3c user: drh tags: wal
08:30
Add test case demonstrating deadlock during recovery of very large log files. No fix yet. check-in: 63ea318e user: dan tags: wal
00:59
Do not allow journal_mode=WAL if the underlying VFS does not support xShmOpen. check-in: d1fcccec user: drh tags: wal
2010-04-30
22:28
Merge in changes from the trunk. check-in: 76bf0eee user: drh tags: wal
17:47
Change the SHM VFS logic in os_unix.c so that it does not hold an exclusive lock n the mapped memory when also holding a CHECKPOINT lock. This improves concurrency between readers and checkpointers. check-in: 8660cda6 user: drh tags: wal
17:28
Remove some obsolete debugging parameters. check-in: a012aed4 user: drh tags: wal
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
16:48
In the debugging output for SHM-LOCK in os_unix.c, use symbolic names for the lock states rather than raw numbers. check-in: 2afc33de user: drh 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
16:12
Correctly record the fact that the SHM lock reached PENDING if it did so but failed to reach CHECKPOINT. check-in: d9250e84 user: drh tags: wal
15:54
Fix a couple uninitialized variables in the xShmLock method of the unix VFS. Improved debugging logic for xShmLock. check-in: 69567c5f user: drh 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
14:39
Separate the concepts of underlying storage size and mapped size in the VFS shared-memory implementation. check-in: 4cbe49f1 user: drh 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
02:13
The first 6 WAL tests now work. It's a start. check-in: a92c1851 user: drh tags: wal
2010-04-29
22:34
Refactor wal.c to use the VFS. This check-in compiles and links and works ok as long as you leave WAL turned off, but WAL does not work. check-in: 62db5fa3 user: drh tags: wal
16:40
Untested implementation of the shared-memory dead-man-switch. check-in: 70661128 user: drh tags: wal
15:17
Progress towards a VFS that will support WAL. Locking code is in place but is untested. Still no support for the DMS. check-in: 1bde41cf user: drh tags: wal
14:58
Close all open database connections at the end of wal.test. check-in: 3cc55a75 user: dan tags: wal
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
17:21
Changes to the interface design for the xShmLock method of the VFS. check-in: 348409de user: drh tags: wal
14:42
Rename the sqlite3_log_hook() to sqlite3_wal_hook(). Added comments to wal.h. check-in: bbc38511 user: drh tags: wal
2010-04-27
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
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
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
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
2010-04-24
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
13:33
Merge two leaves on the WAL branch. check-in: c9ed66cc user: dan tags: wal
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
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
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
2010-04-12
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
2010-02-01
15:47
Add log.c. Closed-Leaf check-in: 7b31373f user: dan tags: wal
15:47
Create new branch named "wal" check-in: 784b718e user: dan tags: wal