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89 Commits

Author SHA1 Message Date
drh
23ea97b641 Convert the wal-header and frame-header to 24 bytes. Extra information in 
both headers is designed to enhance robustness after crashes, though the
extra information is currently unused.  This is a snapshot of a work in
progress.

FossilOrigin-Name: 669706431f186f92fdc0856a6206419a1e843f46
 2010-05-20 16:45:58 +00:00
drh
4c1cb6ab05 Fix a bug in the new checkpoint computation. Also update the checkpoint 
algorithm in the test scripts to align with the new implementation.

FossilOrigin-Name: 8b6056f2ee596f31b157a792fac05d11f7cb63bb
 2010-05-19 19:09:37 +00:00
shaneh
a10069dd22 Updates for to WAL TCL test scripts to support running on Windows. 
FossilOrigin-Name: 6a5630806c87b0f4e5632c37c357f98effd9608a
 2010-05-11 02:46:16 +00:00
dan
c6315a44b2 Fix a recently introduced problem in wal.test. 
FossilOrigin-Name: 79b52d0ff7a7b717bde55b97ff05ad17418bc7d7
 2010-05-07 13:52:42 +00:00
dan
65bddc1223 Change wal.test and walhook.test so that they work with DEFAULT_AUTOVACUUM=1 builds. 
FossilOrigin-Name: 4cde92909c20982f7d4e6b550f55d786df398ccd
 2010-05-07 12:49:22 +00:00
dan
998ad21271 Fix a problem with checkpointing large log files created by an external process. 
FossilOrigin-Name: 8f94bde568be52ecc5a976b7a09776ea7b4bb511
 2010-05-07 06:59:08 +00:00
dan
b7d53f54ae 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subsequent transactions discarded) if the last connection to disconnect from a WAL database happended to be holding an out-of-date wal-index header. 
FossilOrigin-Name: d0c0034b0baa83046c1d6b94c886f7039e4e06f5
 2010-05-06 17:28:08 +00:00
dan
c9e4665e7d Unset a tcl variable before reusing it in wal.test. 
FossilOrigin-Name: e83efb232fe8d30714f4c7cffeef80092aea4df7
 2010-05-06 13:36:47 +00:00
dan
2cee6abf8e Add a test case to verify that log files containing pages that are not a power-of-two bytes in size are handled correctly. 
FossilOrigin-Name: c2bf693f933313991d85394009e79a7903037a18
 2010-05-04 15:20:45 +00:00
dan
b6e099a973 Fix problems with recovering wal files that use a page-size other than the default. 
FossilOrigin-Name: 1a391f3c55dc9d4266552fa26d2a9839c6bafce4
 2010-05-04 14:47:39 +00:00
dan
8d6ad1cc2c Test that the correct number of padding frames are appended to the log file after committing a transaction in synchronous=FULL mode. 
FossilOrigin-Name: a60104aa7e38e7d9f2ff2eae02687dc9c5dd5d77
 2010-05-04 10:36:20 +00:00
dan
af0cfd366a 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. 
FossilOrigin-Name: 7fecd21f45b9ce773ffbcef6c84066474e8cd01c
 2010-05-03 15:58:50 +00:00
dan
87c1fe1b69 Have sqlite3_wal_checkpoint() populate the database handle error message and error code (as returned by sqlite3_errmsg() and sqlite3_errcode()). 
FossilOrigin-Name: ff234cf574c7ae384ab1ebc79b2171ef0541bc91
 2010-05-03 12:14:15 +00:00
dan
5a299f9134 Add the "PRAGMA wal_autocheckpoint" command. Rename "PRAGMA checkpoint" to "PRAGMA wal_checkpoint". 
FossilOrigin-Name: 714e5947264571386f966aa8fcdd5607b5832238
 2010-05-03 11:05:08 +00:00
dan
5cf53537a8 Support compile-time option SQLITE_OMIT_WAL, for building without WAL support. 
FossilOrigin-Name: 9b230c43dfa112e3e1589f9775926807bd36b36e
 2010-05-01 16:40:20 +00:00
drh
1b48aa49a4 Remove some obsolete debugging parameters. 
FossilOrigin-Name: a012aed498bf41a5f6f3006182b0c4c2ab0fe1bb
 2010-04-30 17:28:35 +00:00
dan
185cca609b Close all open database connections at the end of wal.test. 
FossilOrigin-Name: 3cc55a7568daa3796483f632e33478969e381cf5
 2010-04-29 14:58:53 +00:00
dan
31c03907fd Fix a but in the WAL checkpoint code causing SQLite to use an inconsistent cache in a subsequent transaction. 
FossilOrigin-Name: d1cadeed4eea20d8892726cc8c69f4f3f57d0cd4
 2010-04-29 14:51:33 +00:00
dan
8b348af860 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. 
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.

FossilOrigin-Name: be44349d2b790fb470fcc9fb6a12e8b1076dc645
 2010-04-27 18:43:16 +00:00
dan
31f98fc8e4 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. 
FossilOrigin-Name: b51a5f8bc660616aa264025dd7ad4bdab458814b
 2010-04-27 05:42:32 +00:00
dan
4cd78b4d89 Fixes for problems with small caches and SAVEPOINT rollback in WAL mode. 
FossilOrigin-Name: 6a944f028d4a070bef29e1fbc6fbef481ebcd34c
 2010-04-26 16:57:10 +00:00
dan
cd11fb28c3 Add mutexes to fix a race condition in wal.c. This isn't a very good fix. 
FossilOrigin-Name: 3d159939cc2beb18c4ca0c8e9a99a75d4107e6e4
 2010-04-26 10:40:52 +00:00
dan
74d6cd887f Fix bugs in WAL mode rollback. 
FossilOrigin-Name: 31215969f59be536fe87431bb9fbfa7d13027e35
 2010-04-24 18:44:05 +00:00
dan
ce4f05f374 Create a version of the log checksummer that works on big-endian platforms. Remove the 512KB size limit on the log-summary. 
FossilOrigin-Name: 5d6d4423d1def39bd2424703120aa985085c3f8e
 2010-04-22 19:14:13 +00:00
dan
b978002743 Tests for (and changes to) the code to switch between WAL and rollback modes. 
FossilOrigin-Name: 9f4f933f2c6596064fcfc7fb5add87e8c5b57448
 2010-04-21 18:37:57 +00:00
dan
a470aeb4ac 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. 
FossilOrigin-Name: 33cabf271b8f4dda508a610bf59964273fe2cb84
 2010-04-21 11:43:38 +00:00
dan
e04dc88be5 Use the read and write version fields of the database header to mark a database as operating in wal-mode. 
FossilOrigin-Name: 96bef18c1411c3e0348295886f105e1646c46320
 2010-04-20 18:53:15 +00:00
dan
6703239d2f 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. 
FossilOrigin-Name: 9bc9b6847303d0324543a9ded8dd0473490122d8
 2010-04-17 15:42:43 +00:00
dan
3de777fd8c Enhancements to wal-mode locking scheme. 
FossilOrigin-Name: 8549c286497f3d2cd118be1334fce00d6f8a26c4
 2010-04-17 12:31:37 +00:00
dan
97a313554d Change the log file format to include a small (12 byte) header at the start of the file. 
FossilOrigin-Name: 9865d14d6041874bc1239ce7a061d5c75f2d33c9
 2010-04-16 13:59:31 +00:00
dan
4a4b01dc1c Fix bug in log recovery (last frame in log was being ignored). Also remove an incorrect assert statement. 
FossilOrigin-Name: 67d2a89ec2d593a077eb19a6ea2b06cb1c2e9ba8
 2010-04-16 11:30:18 +00:00
dan
4cc6fb6165 Allow writers to write dirty pages to the log mid-transaction in order to free memory. 
FossilOrigin-Name: ecd828f96909895535d7dc744e5a8530e234e04d
 2010-04-15 16:45:34 +00:00
dan
49320f8568 Add tests and fix bugs in WAL locking mechanism. 
FossilOrigin-Name: c18077f2465fc34830f11c9832e76be5746eaeea
 2010-04-14 18:50:08 +00:00
dan
e264d983d1 Add tests to check inter-process WAL locking. 
FossilOrigin-Name: 9435f3135849e0d38fde1669201db508561a6308
 2010-04-14 18:06:50 +00:00
dan
b9bf16bfde Fixes for locking issues in WAL mode. 
FossilOrigin-Name: a9617eff39177250e2f118f25fdd4b3acb8b0478
 2010-04-14 11:23:30 +00:00
dan
f05c86dd73 Remove old code to interpret an argument (no longer used) to "PRAGMA checkpoint". 
FossilOrigin-Name: 27dc5977c19e717afd65d3805557e38dec7bedcb
 2010-04-13 11:56:03 +00:00
dan
80a1526a9a Fix other problems in the WAL test scripts. 
FossilOrigin-Name: dcb31181db246dd3f81ce63b144dd0cf95f06ee3
 2010-04-13 11:45:31 +00:00
dan
d3f8f94652 Fix test script issues preventing walthread.test from running. 
FossilOrigin-Name: d90b1dde0702ceb0eae2a3da36733a7e5b1a6b3a
 2010-04-13 11:35:01 +00:00
dan
7c24610e64 Import experimental write-ahead-logging code. 
FossilOrigin-Name: 409d61baeb0a19d1700c973f16c8acef7b8506cd
 2010-04-12 19:00:29 +00:00