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20,353 Commits 1,608 Branches 185 Tags
ccf6e7d0f0cbcd829b13c482aa43c27a59ea335c
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311 Commits

Author SHA1 Message Date
drh
8997087a00 Improved testability. 
FossilOrigin-Name: e83d3a2a4e06665e8a056f63063bd6df03f063b9
 2016-01-11 00:52:32 +00:00
drh
b7c2f86b85 All WAL frame overwrites even if there are active savepoints. This is safe 
because a ROLLBACK TO will cause all reverted pages to be rewritten to the
WAL file prior to COMMIT.

FossilOrigin-Name: 99b31a6b491c1c51227f478d3713b020d37a17cf
 2016-01-09 23:55:47 +00:00
dan
c9a9022b21 If it is known that checksums will be recalculated on transaction commit, skip calculating checksums when appending frames to the wal file. When recalculating checksums, recalculate them starting with the first overwritten frame - not the first frame in the transaction. 
FossilOrigin-Name: 16b34f2537bbc7846d8e6dc2b35daae5af241c1b
 2016-01-09 18:57:35 +00:00
dan
d6f7c97952 If a single page is written to the wal file more than once, have each subsequent copy overwrite the original frame. 
FossilOrigin-Name: 5d113aef2c7d746e8eda88d4e36c04a39b0a11be
 2016-01-09 16:39:29 +00:00
drh
21d61853e7 Add the experimental SQLITE_FCNTL_JOURNAL_POINTER file control for obtaining 
the sqlite3_file pointer associated with a rollback journal or WAL file.

FossilOrigin-Name: a02ace9a746ff02fc1a5969bf13939b568624f93
 2016-01-08 02:27:01 +00:00
dan
0f308f5d47 Add a new assert() statement to the snapshot-specific part of sqlite3WalBeginReadTrans(). 
FossilOrigin-Name: d8a12023be32bdc6df18b0a5f38b917799854342
 2015-12-11 14:59:49 +00:00
drh
c49e960d41 Fix a variable type mismatch problem in the snapshot logic. 
FossilOrigin-Name: 93fb8010e4999b6b832d63a7c5a152f65d4415a3
 2015-12-11 03:16:54 +00:00
drh
71b62fa456 Fix a bad assert related to snapshots. 
FossilOrigin-Name: 767ee30efa5dd469e3a51d4e44cbe473061819b9
 2015-12-11 01:22:22 +00:00
drh
e230a8994e Snapshot documentation updates. Comment changes only - no changes to code. 
FossilOrigin-Name: ef51a398a04963508389ffe2f9d8359c1ec48261
 2015-12-10 22:48:22 +00:00
dan
a7aeb39836 Return SQLITE_BUSY (not SQLITE_BUSY_SNAPSHOT) if sqlite3_snapshot_open() fails to obtain the shared checkpointer lock. 
FossilOrigin-Name: 5343060bcc6c99029f731f8020d2cba3f405f207
 2015-12-10 19:11:34 +00:00
dan
3bf83ccd70 Have sqlite3_snapshot_open() avoid a race condition by taking a shared CHECKPOINTER lock while checking pInfo->nBackfillAttempted. 
FossilOrigin-Name: 8084eae0bc4f6513b1147fb890a6b2813f1c0a09
 2015-12-10 15:45:15 +00:00
mistachkin
c9fb38e7ad Fix spacing typo in comment. No changes to code. 
FossilOrigin-Name: 3a18526fc2253658dad84c5e600481c8a62efe40
 2015-12-10 03:16:47 +00:00
drh
998147ec38 Add the nBackfillAttempted field in formerly unused space in WalCkptInfo and 
use that field to close the race condition on opening a snapshot.

FossilOrigin-Name: cb68e9d0738fc7db7316947b4d2aab91aae819f2
 2015-12-10 02:15:03 +00:00
dan
65127cd57d Update sqlite3_snapshot_open() to reduce the chances of reading a corrupt snapshot created by a checkpointer process exiting unexpectedly. 
FossilOrigin-Name: 7315f7cbf4179aadda0f1a0baa1526a9b9f9729f
 2015-12-09 20:05:27 +00:00
dan
818b11aebb Add tests for snapshot_get(), _open() and _free(). 
FossilOrigin-Name: 502cc6f353358946080d9bcd335aed526825b88a
 2015-12-07 14:33:07 +00:00
dan
fc1acf33b8 Add untested implementations of experimental APIs sqlite3_snapshot_get(), _open() and _free(). 
FossilOrigin-Name: 0715eb00aa8891400cd50a15509d3d7b13789626
 2015-12-05 20:51:54 +00:00
drh
ab37277367 Remove more (dead) SQLITE_FCNTL_WAL_BLOCK logic from wal.c - code that was 
missed during the [e1d5320ca08933] check-in.

FossilOrigin-Name: 58c15c6af964563ac7ece8606d16730ccf9ee72b
 2015-12-02 16:10:16 +00:00
dan
5c472d0860 Fix an assert() enabled by SQLITE_ENABLE_EXPENSIVE_ASSERT in wal.c. 
FossilOrigin-Name: 8d2ed150a7a15626965cf994ef48c3ab61eca6ec
 2015-09-09 19:44:33 +00:00
dan
b8c7cfb834 When searching the wal file for a frame, do not search that part that was already checkpointed when the snapshot being read was at the head of the wal file. 
FossilOrigin-Name: 90760e72327eb0593cbfa6d7058b554198cd8044
 2015-08-13 20:23:46 +00:00
dan
6df003c7a5 Avoid reading frames that have already been checkpointed from the wal file. 
FossilOrigin-Name: 5669ac4a40429abc3f44540fc9d2f3b79b404bdf
 2015-08-12 19:42:08 +00:00
mistachkin
6b67a8ae03 Fix harmless compiler warning in MSVC 2015. 
FossilOrigin-Name: 01c8b9ccfa0f336dfead7c004de3de571753f707
 2015-07-21 19:22:35 +00:00
drh
f6bff3f5d6 Avoid a harmless compiler warning. 
FossilOrigin-Name: 2288842b8f191ff05a157db7f77af867bfa83c4f
 2015-07-17 01:16:10 +00:00
drh
f4fa0b8073 Fix some harmless compiler warnings. 
FossilOrigin-Name: 110cd84f5e842c4dcd9b9398cea211e25f36b3aa
 2015-07-15 18:35:54 +00:00
drh
f3cdcdccbe Use sqlite3_malloc64() in place of sqlite3_malloc() internally. 
FossilOrigin-Name: 48f553b05c05373c0af4b9c3a542979db3a2ee19
 2015-04-29 16:50:28 +00:00
dan
1fe0af200d Add a comment to wal.c to explain why a race condition is safe. 
FossilOrigin-Name: bc33af866403c23d548dd4705675315810d52d7f
 2015-04-13 17:43:43 +00:00
drh
bbf76eec34 Arrange for some of the transient locks in WAL mode to block, as a single 
to the OS to fix priority inversions.

FossilOrigin-Name: c6e6d5f4e06c3ac0bfb620c0c728fbc7230c4a02
 2015-03-10 20:22:35 +00:00
dan
976b003344 Ensure that "PRAGMA wal_checkpoint = TRUNCATE|FULL|RESTART" block on other connections and truncate the database file as required even if the entire wal file has already been checkpointed. 
FossilOrigin-Name: 53429689d4fcf472edbc89cc50b5e69ba3270634
 2015-01-29 19:12:12 +00:00
drh
622a53d54a Reinstate an assert() by adding an "|| CORRUPT_DB" term. 
FossilOrigin-Name: 95ce20348d9b868a0407adccdb222a0e4c762945
 2014-12-29 11:50:39 +00:00
drh
a25165fa68 Add an implementation mark and fix a comment describing the OP_Checkpoint 
opcode.

FossilOrigin-Name: 7475b90c558157802b036162376fceacc1b9ab4a
 2014-12-04 04:50:59 +00:00
drh
dd90d7ee81 Add evidence marks and assert()s used as evidence for checkpoint requirements. 
FossilOrigin-Name: b2da8afc7657266fbe8e683c6e50fe18216cbcf3
 2014-12-03 19:25:41 +00:00
dan
0fe8c1b967 When attempting to restart a wal file, make any required calls to sqlite3_randomness() before waiting on or checking for wal file readers. This restores the behaviour exhibited by the trunk. 
FossilOrigin-Name: 6ee08769f0ffbb3d620c66b89180ece7782dc820
 2014-12-02 19:35:09 +00:00
dan
f26a1549ac Add the SQLITE_CHECKPOINT_TRUNCATE option. 
FossilOrigin-Name: 8e20a43419e46b6b9d1f60ec7ea420bbfb3ef358
 2014-12-02 19:04:54 +00:00
drh
664f85dd59 Add an ALWAYS on an always-true branch in wal.c. 
Fix the ANALYZE command so that it resets the "unordered" and "noskipscan"
flags on indices when reloading the sqlite_stat1 table.

FossilOrigin-Name: 9ed97a85feee6593faefa2b54cc4cf9a60f515f9
 2014-11-19 14:05:41 +00:00
drh
47b7fc7843 Experimental changes that permit read operations to continue after a 
ROLLBACK, as long as the schema is unchanged.

FossilOrigin-Name: fa6e6a9ae276cad60e9a4abc1bc23cf2809ea786
 2014-11-11 01:33:57 +00:00
drh
cbd55b0362 Change the definition of SQLITE_CONFIG_SCRATCH so that at most one scratch 
buffer is used per thread.  Use the generic heap memory allocator for the
WalIterator object when running a checkpoint.

FossilOrigin-Name: 391c9b85abcb5ba300fb2e116384639310c69ed2
 2014-11-04 14:22:27 +00:00
peter.d.reid
60ec914c74 Fix typos in comments. No code changes. 
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
 2014-09-06 16:39:46 +00:00
drh
5b6e3b9781 Increase the WAL-mode SQLITE_PROTOCOL timeout to 10 seconds. 
FossilOrigin-Name: 2aeacf81df92b4fe5d1825c1dc1cd176b8af8bd9
 2014-06-12 17:10:18 +00:00
dan
dd973548f1 Ensure that if the "psow=0" URI option or FCNTL_POWERSAFE_OVERWRITE file-control is used to clear the power-safe overwrite flag, extra padding frames are added to the WAL file. 
FossilOrigin-Name: 48c821fd97a8f03757c90560c37a46bd0843570e
 2014-02-13 19:27:08 +00:00
dan
e5b6ea797e Avoid passing a flags argument with the internal WAL_SYNC_TRANSACTIONS bit set when calling sqlite3OsSync(). 
FossilOrigin-Name: e3b79e920c298a39613631d689d1a2f182d00496
 2014-02-13 18:46:59 +00:00
dan
f73819af05 Add extended error code SQLITE_BUSY_SNAPSHOT - returned in WAL mode when a read-transaction cannot be upgraded to a write-transaction because it is reading from a snapshot other than the most recently committed. 
FossilOrigin-Name: 361c22969aa75340ed696e00e3dc5d17d5493bee
 2013-06-27 11:46:27 +00:00
drh
d040e76442 Add new primary error codes SQLITE_NOTICE and SQLITE_WARNING for use with 
sqlite3_log().  Add new extended error codes SQLITE_NOTICE_RECOVER_WAL and
SQLITE_NOTICE_RECOVER_ROLLBACK to use with sqlite3_log() messages that occur
on each recovery.

FossilOrigin-Name: be7d2c5482c41baf000d7fb5dccc31b974e91064
 2013-04-10 23:48:37 +00:00
dan
f55a4cf80c Ensure that a checkpoint does not use an out-of-date mapping. 
FossilOrigin-Name: a1040f0397d57855500926494c978623286ddc77
 2013-04-01 16:56:41 +00:00
dan
0943f0bdc8 Fix a typo in a log message in wal.c. 
FossilOrigin-Name: 83fc48d16572443373e5de62adbd4cd53c2f7786
 2013-04-01 14:35:01 +00:00
dan
f23da96636 Replace the sqlite3_io_methods.xMremap interface with sqlite3_io_methods.xFetch and xUnfetch. 
FossilOrigin-Name: 1431be95579160fb70408d43e17fc23c7b69ab4a
 2013-03-23 21:00:41 +00:00
dan
e5586a1a79 Improve a comment in wal.c. No code changes. 
FossilOrigin-Name: 60b9f5e4dd2af54975ba78437239f0bebd472fd2
 2013-03-23 17:29:06 +00:00
dan
99bd10979a Allow the database file to be memory mapped in wal mode. 
FossilOrigin-Name: d190ddabc386bc9654b99e33fb81b2f6e67b54d6
 2013-03-22 18:20:14 +00:00
dan
7eb0575287 Fix a failing assert() in wal.c. 
FossilOrigin-Name: 8745530b9a877db77fe2ca3ea9c6bc99ce033055
 2012-10-15 11:28:24 +00:00
dan
c9a5326974 Ensure that the value returned by xSectorSize() is reasonable (currently defined as between 2^5 and 2^16 bytes) before using it to calculate the amount of padding to add to a wal file. 
FossilOrigin-Name: 6b4ff83bff07d427af585c9fd03be90abf2fc82f
 2012-10-01 06:50:55 +00:00
mistachkin
d5578433ff Fix all known instances of 'repeated the' style typos in comments. No changes to code. 
FossilOrigin-Name: 9b19b847533f944f289d93dcdba29c0d67bf251c
 2012-08-25 10:01:29 +00:00
dan
5373b76bdc Ensure that there is always at least one aReadMark slot usable by an unprivileged reader while a checkpoint is running. Also, if one or more transactions are recovered from a log file, initialize one of the aReadMark slots to contain mxFrame as part of the recovery process. 
FossilOrigin-Name: e4163596339c2166f9c4356ab824fff8bda8d0b0
 2012-07-17 14:37:12 +00:00