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100 check-ins occurring around 208e7d5d3a891543.

2010-05-12
06:54
Remove a branch made redundant by the earlier exclusive-mode changes. check-in: c501b2ed user: dan tags: trunk
2010-05-11
16:29
Have os_unix.c use the suffix "-wal-index" for wal-index files instead of "-wal-inde". check-in: 885e854e user: dan tags: trunk
14:00
When an attempt to change journal_mode fails due to locks, be sure to leave internal structures in a consistent state. check-in: cf3d1e0b user: drh tags: trunk
12:19
Changes so that WAL and exclusive-locking mode work together. check-in: 71e7b1cf user: dan tags: trunk
02:49
Initial port of WAL VFS support from os_unix.c to os_win.c. check-in: 111ad59f user: shaneh tags: wal-win32
02:46
Updates to WAL TCL test scripts to support running on Windows. check-in: 6a563080 user: shaneh tags: trunk
2010-05-10
19:51
Fix an off-by-one error while constructing the name of the mmap file for the wal-index under os_unix.c. check-in: 6e3735f7 user: drh tags: trunk
18:10
Merge [96d6eaf4d2] and [40b0a6357b]. check-in: c67756c4 user: dan tags: trunk
17:29
Fix an uninitialized variable in OSX proxy locking. check-in: 96d6eaf4 user: drh tags: trunk
14:46
Modify the format of the wal-index to use a hash table to index log file segments. check-in: 40b0a635 user: dan tags: trunk
14:10
If an ATTACH command fails due to OP_JournalMode but still attaches the database, make sure VACUUM still detaches it when done. check-in: 6ecdc7ba user: drh tags: trunk
11:20
Enhance the OP_JournalMode opcode with an ignore-errors option and use that option the ATTACH command. check-in: 0bdea4cf user: drh tags: trunk
2010-05-07
20:34
When running a checkpoint while in locking_mode=EXCLUSIVE, be sure to move the wal-index lock to UNLOCK from READ prior to promoting to CHECKPOINT. check-in: be114bdf user: drh tags: trunk
20:02
Change the xShmOpen() method of the VFS to take the database file name as its argument, not the WAL file name. Also fix some unrelated compiler warnings. check-in: a65c2939 user: drh tags: trunk
18:23
Additional tweaks to API documentation. No functional code changes. check-in: e1230782 user: drh tags: trunk
13:57
Updates to documentation on the C interfaces supporting WAL. No functional changes to code. check-in: 681ba20c user: drh tags: trunk
13:52
Fix a recently introduced problem in wal.test. check-in: 79b52d0f user: dan tags: trunk
12:49
Change wal.test and walhook.test so that they work with DEFAULT_AUTOVACUUM=1 builds. check-in: 4cde9290 user: dan tags: trunk
09:43
Test another IO error case in wal.c. check-in: 8b3b5ab8 user: dan tags: trunk
06:59
Fix a problem with checkpointing large log files created by an external process. check-in: 8f94bde5 user: dan tags: trunk
05:46
Since walIndexTryHdr() can no longer encounter any error conditions, change tehe function signature so that it does not return an error code. This removes unreachable branches from other code. check-in: 061a282c user: dan tags: trunk
00:28
Another attempt to fix permutations.test so that it excludes WAL tests from the journaltest permutation. check-in: 58c40442 user: drh tags: trunk
2010-05-06
22:21
Remove savepoint6.test from the set of tests run by journaltest since savepoint6.test uses journal_mode=WAL. check-in: 811b45a9 user: drh tags: trunk
21:37
The PRAGMA journal_mode=WAL; command now makes WAL the default journal mode for new databases added with ATTACH, so the behavior is consistent with the other journal modes. check-in: c3520460 user: drh tags: trunk
20:19
Make sure to do a clean shutdown of the library upon existing the shell in order to remove WAL files. check-in: c1762dda user: drh tags: trunk
19:55
Exclude all WAL tests from the journaltest permutation. check-in: 46c97d7e user: drh tags: trunk
19:20
Changes to support SQLITE_OMIT_WAL. check-in: 32a8501d user: shaneh tags: trunk
19:04
Updates to the VFS SHM locking documentation. check-in: 9927ce42 user: drh tags: trunk
18:48
Instead of transitioning to RECOVER state from CHECKPOINT when a recovery is required, perform the recovery while holding the CHECKPOINT lock. check-in: bb0b6021 user: dan tags: trunk
18:27
If recovery is run before a checkpoint, change back to a CHECKPOINT lock before performing the actual checkpoint. check-in: dc98ee16 user: dan tags: trunk
18:04
Only pass -1 as the size parameter to xShmGet when the caller does not care what size mapping is returned. Only call xShmSize when the underlying allocation (not the mapping) should be resized. check-in: 637f51dd user: dan tags: trunk
17:28
Fix a bug whereby an old snapshot could be checkpointed (and subsequent transactions discarded) if the last connection to disconnect from a WAL database happended to be holding an out-of-date wal-index header. check-in: d0c0034b user: dan tags: trunk
16:06
After throwing an error to say that one cannot change into WAL mode within a tranactions, do not then go and change into WAL mode. check-in: 56a17dae user: drh tags: trunk
15:56
Further coverage tests. check-in: 98a9713e user: dan tags: trunk
15:36
Update configure scripts for WAL support. check-in: 2edc5129 user: shaneh tags: trunk
14:42
Add tests to cover a couple of branches in wal.c. check-in: 429f437f user: dan tags: trunk
13:36
Unset a tcl variable before reusing it in wal.test. check-in: e83efb23 user: dan tags: trunk
12:15
Add tests for some lock-contention cases. check-in: f0fcb9c9 user: dan tags: trunk
11:56
Remove the noop-mutex implementations of mutex_held() and mutex_notheld() since they are both unreachable. check-in: 6767b62a user: drh tags: trunk
11:55
Add two text files containing pager design notes to the doc/ subfolder. check-in: ed817fc8 user: drh tags: trunk
11:32
Add test cases to test the libraries handling of corrupt wal-index headers. check-in: 9465b267 user: dan tags: trunk
07:43
Add tests for handling errors returned by xShm VFS methods. check-in: fbbcacb1 user: dan tags: trunk
2010-05-05
20:00
Change the behavior of the sqlite3_wal_hook() callback. It should now return SQLITE_OK or an error code and the error code is propagated back up the stack. If a checkpoint is desired, the callback should invoke sqlite3_wal_callback() itself. check-in: 1b14195e user: drh tags: trunk
19:09
Further simplifications to the SHM locking logic. Remove the SQLITE_SHM_QUERY option. Unify the WRITE to READ and RECOVER to READ transitions. check-in: e9bfa6e4 user: drh tags: trunk
19:04
Test the handling of errors returned by the xShmXXX() APIs. check-in: 72663123 user: dan tags: trunk
18:46
Do not compare page sizes on source and destination of backup until transactions are started and the page sizes are locked. This is a fix to check-in [7bd44794c4]. check-in: ec715778 user: drh tags: trunk
18:20
Simplifications to the SHM locking implementation in os_unix.c. check-in: 9de05bfb user: drh tags: trunk
16:23
Prohibit backup if the destination is using WAL and has a different page size from the source. check-in: 7bd44794 user: drh tags: trunk
15:33
When closing a WAL database, if the exclusive lock on the database file is obtained and the database successfully checkpointed, delete the wal-index file from the file system. check-in: 2ac5d96c user: dan tags: trunk
04:11
Make sure the page size of the main database is fixed following a failed VACUUM attempt. Otherwise, two consecutive failed VACUUM attempts with attempted page_size changes on encrypted or WAL databases could result in database corruption. check-in: 208e7d5d user: drh tags: trunk
03:39
Do not attempt to modify the page_size when running VACUUM on a WAL database. check-in: 58a1a59b user: drh tags: trunk
00:22
Get the previous mutex fix working with SQLITE_DEBUG and with the amalgamation. check-in: df19928f user: drh tags: trunk
00:05
When the in single-threaded mode, the sqlite3_mutex_alloc() interface still returns a non-NULL value. The mutex doesn't do anything, but it tests non-NULL. This way, extensions (or VFSes) that use sqlite3_mutex_alloc() can tell the difference between an OOM error and mutexes being disabled. check-in: 451fd175 user: drh tags: trunk
2010-05-04
18:50
When sqlite3PagerPagecount() is called without any locks, always return the physical file size, not the logical file size. check-in: 4016b422 user: drh tags: trunk
17:38
Be sure to release all wal-index locks before closing the wal-index. check-in: b15b67fa user: drh tags: trunk
17:20
Relax an over-zealous assert() in sqlite3WalUndo(). check-in: 8f9d22d5 user: drh tags: trunk
16:33
Take care not to invoke the xShmClose method of the VFS with a NULL shared memory object. check-in: 1465d384 user: drh tags: trunk
15:20
Add a test case to verify that log files containing pages that are not a power-of-two bytes in size are handled correctly. check-in: c2bf693f user: dan tags: trunk
14:47
Fix problems with recovering wal files that use a page-size other than the default. check-in: 1a391f3c user: dan tags: trunk
11:06
Fix a typo in walfault.test. check-in: 232dbe8e user: dan tags: trunk
10:36
Test that the correct number of padding frames are appended to the log file after committing a transaction in synchronous=FULL mode. check-in: a60104aa user: dan tags: trunk
2010-05-03
19:20
Unset some global TCL variables prior to use in test where prior tests can have those same variables set to an array value. check-in: 49bef00e user: drh tags: trunk
19:17
Fix a bug in the computation of the current time for the alternative CURRENT_TIMESTAMP functions used when SQLITE_OMIT_DATETIME is defined. check-in: e7ded46b user: drh tags: trunk
18:51
Documentation stubs for sqlite3_wal_autocheckpoint and sqlite3_wal_checkpoint. check-in: 31376242 user: drh tags: trunk
18:22
Fix a bug in the xCurrentTime() method of the os_unix.c VFS. check-in: 551df11a user: drh tags: trunk
18:01
Add a test to simulate an OOM during log recovery to walfault.test. check-in: 7ed85e87 user: dan tags: trunk
17:24
Clear global variable "seconds" before use in walthread.test. check-in: a35551a5 user: drh tags: trunk
17:18
Fix a couple of errors in WAL code that can occur in an OOM situation. check-in: 9d3f3736 user: dan tags: trunk
16:36
Update the crash-test VFS in test6.c to pass-through the shared-memory methods to the real underlying VFS. This fixes the walcrash.test script. check-in: ea09ff37 user: drh tags: trunk
16:30
Change the VFS definition so that all methods take a VFS object pointer as their first parameter. check-in: 43b5b07f user: drh tags: trunk
15:58
Have sqlite3_wal_checkpoint() handle a zero-length string in the same way as a NULL pointer. Fix "PRAGMA wal_checkpoint" so that it checkpoints all attached databases. check-in: 7fecd21f user: dan tags: trunk
14:32
Use VFS method xCurrentTimeInt64 instead of xCurrentTime when it is available. Provide an implementation of xCurrentTimeInt64 for os_unix.c. check-in: ab77b3ae user: drh tags: trunk
14:08
Merge the write-ahead-logging changes into the trunk. check-in: de9ae443 user: drh tags: trunk
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
21:03
Avoid assertion faults in queries using indices with redundant columns. Ticket [3dbdcdb14e7f41]. check-in: 946e06cd user: drh tags: trunk
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