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7944 Commits

Author SHA1 Message Date
dan
3cac5dc9bc Clarify an assert in sqlite3WalExclusiveMode(). 
FossilOrigin-Name: 255850699ddbf4aad8cc3223aefbada35daa0703
 2010-06-04 18:37:59 +00:00
dan
0153a9bc04 Remove an unnecessary branch from wal.c. 
FossilOrigin-Name: 8e54786c9a0c5c399f228f56c73271f84d75694b
 2010-06-04 17:16:52 +00:00
dan
0dc7b74fbe Add an English language error message to corresponding to SQLITE_PROTOCOL. "locking protocol". 
FossilOrigin-Name: ca327e32cfe1633f2c9d3f058e411f108aaa2b3c
 2010-06-04 15:59:58 +00:00
dan
23dced35ea Add test for the code that detects an inconsistent pair of wal-index headers to wal2.test. 
FossilOrigin-Name: 157feba10f7ac01eecf79715c44bb16c98958280
 2010-06-04 12:22:35 +00:00
dan
d764c7de25 If an attempt to sync the database file as part of a checkpoint fails, do not update the shared "nBackfill" variable. Otherwise, another process could wrap the log and overwrite content before it is synced into the database. 
FossilOrigin-Name: b813233d7604a5fd91e1af91d5d812032eec700a
 2010-06-04 11:56:22 +00:00
dan
83f42d1b38 Fix a problem where an SQLITE_BUSY in the checkpoint code was being treated as an IO error (abandoning, instead of just limiting, the checkpoint). 
FossilOrigin-Name: 02c4040ce2b4c970b3dee09f7c9ad5a2a3a9aa49
 2010-06-04 10:37:05 +00:00
dan
d03f523d3b Fix another problem in test_vfs.c. 
FossilOrigin-Name: df7d59899ceb2743764b0433cb68f4bc33f16344
 2010-06-03 19:10:08 +00:00
dan
961ff45104 Have test_vfs.c simulate IO errors in xShmLock. 
FossilOrigin-Name: fcbf7cf189506e43fc2f0820aedffb195038d3a9
 2010-06-03 18:20:19 +00:00
drh
05cb5b244b Performance fix for winShmClose(). 
FossilOrigin-Name: ed7774de04978803e979580240148eba1de9166d
 2010-06-03 18:02:48 +00:00
dan
db9d981a8d Add extra tests for removing elements from wal-index hash tables as part of a rollback. 
FossilOrigin-Name: af3e598ad9315a4642dd8fa098dfdbd727770aed
 2010-06-03 16:58:46 +00:00
dan
459564f43f Delay opening the sub-journal until SQLite actually needs to write data to it. 
FossilOrigin-Name: c43deb33ae5f191ea2e054181759beeeb9ea71bf
 2010-06-03 12:35:28 +00:00
drh
f83dc1ef3f Remove global variables when compiled with SQLITE_OMIT_WSD 
FossilOrigin-Name: dd10a547f10364058025c48b28d8fd240bf46aff
 2010-06-03 12:09:52 +00:00
dan
1f55e28d2a Enhancements to test_vfs.c and walfault.test. 
FossilOrigin-Name: ac0de2f39e948f3b00e96eebf56ebee70472020d
 2010-06-03 09:25:10 +00:00
dan
40ad9d2870 If an error (OOM or SQLITE_FULL error) occurs while executing an SQL statement and a statement-transaction is automatically rolled back as a result, if a second error occurs during the statement rollback do a full transaction rollback instead. Otherwise the client can be left with an inconsistent cache. 
FossilOrigin-Name: eb80ddc665132c607c258b59131025a296269dad
 2010-06-03 09:17:38 +00:00
dan
8e64db2b09 If a malloc fails while allocating a savepoint object at the pager level, do not try to roll that savepoint back later on. 
FossilOrigin-Name: 91cb08ffb6332a142542c012b58aa49206ee5704
 2010-06-03 09:01:11 +00:00
drh
2d37e1cfb9 When a lock fails due to an I/O error (not an SQLITE_BUSY) then the checkpoint 
should fail.

FossilOrigin-Name: c6eb0a27270df69018576232d8f97c16d63d8f6e
 2010-06-02 20:38:20 +00:00
dan
6e6bd5658f Fix a problem with rolling back to a savepoint opened before the writer decided to wrap the log file. 
FossilOrigin-Name: 6b4aed6aae7dc9e92807d27375cbe1e83c15841b
 2010-06-02 18:59:03 +00:00
dan
10ec894c3a If an error occurs while writing frames to the log to commit a transaction, do not mark the pages as clean in the cache. Otherwise, the subsequent rollback does not roll them back (leaving the client to continue with a cache that makes it appear that the transaction was committed - inconsistent with the database on disk). 
FossilOrigin-Name: cb571c1b71a37b3a10d640987c77a6eec508235d
 2010-06-02 17:15:24 +00:00
shaneh
2796d336d2 Added implementation of vfslog_time() for Windows testing. 
FossilOrigin-Name: b3109f85bde0b24bfbcfe6c0f7bbe973be196c1d
 2010-06-02 16:40:54 +00:00
shaneh
a1a889ecb4 Updated wal2.test for windows testing. 
FossilOrigin-Name: c3606f3985e4ab38479409c13f3a01d1be4f8189
 2010-06-02 16:39:53 +00:00
drh
c11895b808 Make sure the directory used by os_unix.c for shared-memory files is always 
the same, regardless of individual client permissions and environment
variable settings.

FossilOrigin-Name: f97bd520f06a16c61ccdd9ebeda7e138896b9ac2
 2010-06-02 15:59:05 +00:00
drh
38933f2c11 When walTryBeginRead() encounters an I/O error trying to set a lock 
(as opposed to SQLITE_BUSY) be sure to propagate that error back up
the call stack.

FossilOrigin-Name: aa2c2b67a7f50c97a44cca1af5c437bf5410869c
 2010-06-02 15:43:18 +00:00
drh
aab4c02e47 Changes to make WAL more robust against SHM locking failures and OOM errors. 
FossilOrigin-Name: ebf4041383c3cdddb5861960359abd209d4a1028
 2010-06-02 14:45:51 +00:00
drh
048129dcb9 In the rowhash.test, make sure global variables are cleared prior to use. 
FossilOrigin-Name: 28efe0a40405567f3eaf334b6603282d5adac792
 2010-06-02 14:43:30 +00:00
drh
0af3723478 Undo one of the "const" markers from the previous check-in because the 
value needs to be changable, even if it is not actually ever changed in
the current implementation.

FossilOrigin-Name: c24ac3563f46fc6bcf7e45ee171afd3ae7d2faa8
 2010-06-02 12:58:22 +00:00
dan
558814f8c6 Add some 'const' markers to static data that is really constant. 
FossilOrigin-Name: e7073e23b80e7cae0c76d42f014ee9b2d40a8f2f
 2010-06-02 05:53:53 +00:00
drh
8b3cf82ddf The shared-memory used by WAL on linux now really is shared memory in /dev/shm. 
On other unix flavors, the file is in a temporary directory rather than in the
same directory as the database.

FossilOrigin-Name: fc18c4aadb908c3b6f9b6481a2efca6a0daadc64
 2010-06-01 21:02:51 +00:00
dan
0235ab9944 Changes to the way faults are injected into xShmXXX VFS calls. 
FossilOrigin-Name: 716d99f3929b466c7a17190e0f18de8ab0e7f1fa
 2010-06-01 19:15:18 +00:00
dan
a4bc123f83 Change the OOM and IO error test cases in walfault.test so that each test case runs both types of error simulation. 
FossilOrigin-Name: b627e1536822bb7e3ef91867661a53be0efc13ef
 2010-06-01 17:46:38 +00:00
dan
9971e710e4 Delay the decision to restart the log file until data is actually ready to be written to the log file (instead of at the start of a write transaction). 
FossilOrigin-Name: b1abfaaf5309cc0d0dda4fb2c237862c8cf83261
 2010-06-01 15:44:57 +00:00
drh
964bf9c8bb The incremental checkpoint feature is not perfect yet, but it is working 
well enough to merge it into the trunk.

FossilOrigin-Name: 1d3e569e59ba89cc167f0a48951ecd82f10322ba
 2010-06-01 15:24:29 +00:00
dan
98fbfe703e Merge with [15abbc3416]. 
FossilOrigin-Name: f4b9003a2d3db88eaabb4b291e6cea8e8ea6ff51
 2010-06-01 14:30:49 +00:00
dan
f9b7671066 If an attempt to get a read-lock on the WAL fails with SQLITE_BUSY_RECOVER, call the busy-handler at the btree level. 
FossilOrigin-Name: ce64496509a213c08c9dedae2a7a456b393d22e5
 2010-06-01 14:12:45 +00:00
drh
f77bbd9fc5 Fix a bug introduced by the previous check-in but only seen if 
SQLITE_ENABLE_EXPENSIVE_ASSERTS is turned on.

FossilOrigin-Name: 9c9ec8994bf701249efce6c7bb911de4525808c8
 2010-06-01 13:17:44 +00:00
drh
9c1564779e Fix an off-by-one boundary-value issue in walCleanupHash(). 
FossilOrigin-Name: f039552e6330b6a04281748f985b41937f534bd0
 2010-06-01 12:58:41 +00:00
dan
72bcac9ca7 Do not hold the shared-memory mutex in os_unix.c if returning NULL. 
FossilOrigin-Name: 9622dd468c8914262e9d8bd8dbca9e22ec6ee75c
 2010-06-01 11:08:56 +00:00
dan
e877296705 If the checkpoint fails to obtain an exclusive lock on one of the read-lock bytes, do not consider this an error. 
FossilOrigin-Name: 9e95e35728cf69a0ae50e774d7f6c71a41b17d97
 2010-06-01 10:44:28 +00:00
dan
5f3f3b2962 Fixes to the test cases in wal2.test. 
FossilOrigin-Name: cd5fbcbce8b55f24c0bf349b179c26e333ff7172
 2010-06-01 07:51:47 +00:00
drh
181e091ff3 Comment edits and cleanup in wal.c. No functional code changes. 
FossilOrigin-Name: e8e666ab8273f5db5265f0773b39820f75b6df1a
 2010-06-01 01:08:08 +00:00
drh
ad24581e65 Attempt to get the filectrl.test script running. 
FossilOrigin-Name: e46a8f2b752f86c4d8942ee125210516026ffdc2
 2010-06-01 00:28:42 +00:00
drh
b29ad8502e Fix os_unix.c so that it will compile and build on a Mac. 
FossilOrigin-Name: bc707c83e5f9849d9d201d695d0d071ca9ed93cb
 2010-06-01 00:03:57 +00:00
drh
61e4acecf4 Fix issues with locking_mode=EXCLUSIVE in WAL. 
FossilOrigin-Name: 8deba0cebd135a18da68530fab9e7d19dc21ddcb
 2010-05-31 20:28:37 +00:00
drh
4b82c387c9 Add an "isInit" field in the wal-index header that must be non-zero for 
a valid header.  Use this to detect an uninitialized wal-index.

FossilOrigin-Name: a16fde190183d1ae252d1aa305b23fdb88c603dc
 2010-05-31 18:24:19 +00:00
drh
15d6809222 Fix an inconsistent #ifdef in wal.c. Fix os_unix.c so that it does not allow 
moving an SHM lock directly exclusive to shared without going through unlocked.

FossilOrigin-Name: 552658da2845c2323167b6c7db6e5c00090f280c
 2010-05-31 16:56:14 +00:00
dan
d0aa34277f Avoid dropping the checkpoint lock after a recovery run as a precursor to a checkpoint operation. 
FossilOrigin-Name: cc25cfa04630a43c1de26f2dbdacbe46c110a2b5
 2010-05-31 16:41:53 +00:00
dan
3dee6da994 Zero the checkpoint header as the last step of successful WAL recovery. Avoid an unnecessary lock/unlock in WalBeginReadTransaction. 
FossilOrigin-Name: db3509c55dfe288650b803622e3a0828c6e59aea
 2010-05-31 16:17:54 +00:00
drh
20e1f08e0b Get the new xShmLock interface design working on os_win.c. 
FossilOrigin-Name: 149a7082e266edf0dc25c23823a9e240f5285215
 2010-05-31 16:10:12 +00:00
drh
18b7f604aa Make sure WAL alway requests enough shared-memory space. 
FossilOrigin-Name: 138f128317b6695530ca3fde7be4cdf22548cd22
 2010-05-31 14:39:31 +00:00
drh
4222441dee Remove the tests that enable tracing based on the existance of the "vdbe_*" 
files when in SQLITE_DEBUG mode.

FossilOrigin-Name: cdbb4e7ca7ec27e7e80dd66529d9d565f547887a
 2010-05-31 14:28:25 +00:00
dan
dcb1169fb7 Update another test case in wal.test. 
FossilOrigin-Name: 99fde69e61d12cf95b47db70c4647c30be2d2f45
 2010-05-31 14:18:45 +00:00
drh
a2ac9df170 Change WAL test cases to account for the improved concurrency in the new 
checkpoint logic.

FossilOrigin-Name: 2d6f2485053e6d2a67abda9a80693ca68f4556d2
 2010-05-31 13:11:49 +00:00
drh
34116eaf6a Do not fail a checkpoint just because active readers prevent backfill. 
FossilOrigin-Name: 9aa4243e0cedcc9204994d04af1b2b7a80c048bd
 2010-05-31 12:30:52 +00:00
drh
c74c333408 Add WALTRACE() macros to help with debugging and analysis. 
FossilOrigin-Name: 765c33181a7b9d99b452ce750d69f217b3c81a5d
 2010-05-31 12:15:19 +00:00
dan
1beb939db1 Another minor fix to checkpoint on the WAL branch. 
FossilOrigin-Name: 853f1e3f7720af2723b552bdf086bb106e6e93fe
 2010-05-31 12:02:30 +00:00
dan
0cc5b2b6c6 Fix a bug in checkpoint introduced by [181ceb32ea]. 
FossilOrigin-Name: b499dbc88a67b4200b5f527be88be4ac90f7043f
 2010-05-31 11:39:53 +00:00
dan
d54ff60bf4 Fix some asserts and other things in the new WAL branch. 
FossilOrigin-Name: 181ceb32ead7f540a7c6437f53a5b0f3e78162db
 2010-05-31 11:16:30 +00:00
dan
8521abfd48 Changes to the way one of the WAL/OOM tests works. 
FossilOrigin-Name: 15abbc34168f7a5bd418254c2b16aac97029e6ea
 2010-05-31 06:38:34 +00:00
drh
c99597ca10 WAL runs but quickly deadlocks. 
FossilOrigin-Name: ace58acbf1fad13d2be96cafebc3a22875098d03
 2010-05-31 01:41:15 +00:00
drh
73b64e4d2e Initial code for incremental checkpoint in WAL mode. This check-in compiles 
on unix and runs as long as you do not engage WAL mode.  WAL mode crashes and
burns.  Consider this check-in a baseline implementation for getting the new
capability up and running.

FossilOrigin-Name: ef3ba7a17ff90674d702e5694b9e792851ab6998
 2010-05-30 19:55:15 +00:00
dan
a7a0c615d7 Add tests to fkey2.test to check that ON CONFLICT clauses do not affect SQLite's behaviour when an FK constraint is violated. 
FossilOrigin-Name: e9e5b1001986348ef0f88c19de87b94559a5451e
 2010-05-29 08:40:37 +00:00
dan
94b7f76b96 i 
i
Minor changes to checksum related test cases.

FossilOrigin-Name: 60c22bde52121993d4bea11eef38ab285c737e2c
 2010-05-29 06:18:54 +00:00
dan
5f168a5d53 Add a test to walcksum.test to stress the checksum calculation. 
FossilOrigin-Name: 778d0c1768f73057be912793631e0cf0575858fb
 2010-05-28 04:16:28 +00:00
drh
bab7b91e99 Make sure the wal-index mapping is always large enough to cover the entire 
active area of the wal-index.

FossilOrigin-Name: 42705babba0e9d2ef078845854bebbd168f23366
 2010-05-26 17:31:58 +00:00
drh
026ac28b28 Change the semantics of xShmGet() such that it will never increase the size 
of shared memory.  xShmSize() must be used to grow the size of shared memory.
A shared memory segment size cannot be shrunk (except by dropping it).

FossilOrigin-Name: 72de00731245277b2209103ec0a76e3d4f56530e
 2010-05-26 15:06:38 +00:00
drh
51b21b169a Updated header comments in wal.c. No functional code changes. 
FossilOrigin-Name: 687632a6b3a0aeb006c1eda5c27d5489f08c230e
 2010-05-25 15:53:31 +00:00
dan
fa408ada0a Add a busy-handler to a test case in walthread.test to prevent errors. 
FossilOrigin-Name: d3d348aa975c58c37088eb2830081880896b85e7
 2010-05-25 15:23:51 +00:00
dan
d77766edf7 Modify walcrash2.test so that it works with DEFAULT_AUTOVACUUM=1. 
FossilOrigin-Name: 77438882dd53ac4d98b24e2846c87a2418b4e3d8
 2010-05-25 13:49:09 +00:00
drh
1b78eaf0ba Update header comments in wal.c to correctly describe the WAL file format. 
Update the locking region offsets in os_unix.c and os_win.c and add assert()
statement to verify that the locking region offsets are correct.

FossilOrigin-Name: 40030c0739f821ea8ee188c28c579507f10448bc
 2010-05-25 13:40:03 +00:00
dan
ca6b5baba4 If a writer exits unexpectedly in the middle of a transaction, have the following writer remove any wal-index hash-table entries left by the interrupted transaction. 
FossilOrigin-Name: ed77556adcdf7011b95b9969b360269fb2ebe4e5
 2010-05-25 10:50:56 +00:00
drh
82043b3077 Remove unreachable code associated with WAL from the pager. 
FossilOrigin-Name: 54c1718e6d15a20414cae15895eb5e83217722e2
 2010-05-25 02:24:01 +00:00
drh
f53303573a OOM errors during an auto-checkpoint are benign. 
FossilOrigin-Name: 3d252ce5d0d843e4e65beed672598e65c5745129
 2010-05-24 20:27:44 +00:00
drh
0b9441354b Remove the walmode.test case from the inmemory_journal test of 
permutations.test.

FossilOrigin-Name: 27ba9c21fb591190b73010ced394cc62c1edff54
 2010-05-24 20:24:38 +00:00
drh
c2857bf2a5 Fix the wal2.test script so that it works in auto_vacuum mode. 
FossilOrigin-Name: 6a818afb93ca8383abb55e3835e14c74c3e3de23
 2010-05-24 17:00:19 +00:00
dan
71d8991932 Change the checksum used in WAL files so that each frames checksum depends on the content of the WAL header and all frame headers and content up to and including the frame to which the checksum is attached. 
FossilOrigin-Name: 8a53f12c83a107684b99f4a9de371b5ea3ca810a
 2010-05-24 13:57:42 +00:00
drh
c81791573a Make sure a WAL frame of all zeros is detected as an invalid frame. 
FossilOrigin-Name: 02d99ad4b51065c67cc7689916130774be1c4c87
 2010-05-24 13:28:36 +00:00
drh
00f699d57b Fix up test_osinst.c to work with SQLITE_OMIT_VIRTUALTABLE. 
FossilOrigin-Name: 51fd38152b92db637d1d346fca35ec2d3e4d4f57
 2010-05-24 12:34:14 +00:00
dan
b8fd6c2fe6 Change the WAL file format to support two kinds of checksums - one that is fast to calculate on little-endian architectures and another that is fast on big-endian architectures. A flag in the wal-header indicates which the file uses. 
FossilOrigin-Name: 65ba804dd1d31d1eef6ae3f40a3ade344a410b84
 2010-05-24 10:39:36 +00:00
dan
9c0928dcb6 Add a couple of missing methods to test_osinst.c.. 
FossilOrigin-Name: 5c9e9c06ae350043e66f36087da4021a52e6ee17
 2010-05-22 08:22:39 +00:00
drh
4fa95bfc39 Add several EXPENSIVE_ASSERT code blocks to validate the wal-index hash table. 
Fix the bugs that these code blocks fine.  Rename walClearHash() to 
walCleanupHash() and simplify its interface.

FossilOrigin-Name: 7aade899e55f4565f02d301e1e83fb0bac2ea500
 2010-05-22 00:55:39 +00:00
dan
3b1eca0ade Fix another bug in walClearHash(). 
FossilOrigin-Name: 40f80ffe70ca691dfa146f6d84956ed0784fc63d
 2010-05-21 19:15:04 +00:00
drh
c527669df5 Comment out the SQLITE_FCNTL_SIZE_HINT from os_unix.c since it does not 
seem to provide any performance gain there.

FossilOrigin-Name: 7d01309da658d6b658c1b2e53bbdc5112fb0a4d9
 2010-05-21 18:24:06 +00:00
dan
8067adbc3f Correct an off-by-one bug in the previous commit. 
FossilOrigin-Name: 75a1130d86faf18e73cb46cda5d029f1e913e4e6
 2010-05-21 16:23:43 +00:00
dan
6f1501481f Remove entries from wal-index hash tables when a rollback or savepoint rollback occurs. 
FossilOrigin-Name: 36795c2b23a78978528cace193e386138adacd41
 2010-05-21 15:31:56 +00:00
drh
f0b20f8801 Fix the wal-index header read routine so that it correctly detects a zero 
header as being malformed and in need of a wal-index rebuild.

FossilOrigin-Name: 1a4eb3a3efe86c7caff4d9a5894953bce378f841
 2010-05-21 13:16:18 +00:00
drh
286a288493 Add a new xShmBarrier method to the VFS - a shared-memory fence operation. 
Implement the same in both unix and win32.  Use it to make the WAL subsystem
more robust.

FossilOrigin-Name: 1bd011c9fed5ef29fb616b4d0a52df3b82221b1f
 2010-05-20 23:51:06 +00:00
drh
7e263728f2 Make use of the extra information in the WAL header and frame header to 
enhance robustness.

FossilOrigin-Name: 9580ecb7e3beb1949a71784a3dcd1823a88e4a9d
 2010-05-20 21:21:09 +00:00
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
shaneh
7c767e1113 Merge WIN32 WAL support into trunk. Still some issues with locking to resolve. 
FossilOrigin-Name: 43377663fc3569c361867cdea19e8abaf91a163f
 2010-05-19 23:41:55 +00:00
drh
f5d6e478d3 Add the SQLITE_FCNTL_SIZE_HINT to the os_win.c VFS. 
FossilOrigin-Name: 9894118d20c08951565c2096552d4a3d2413f7b0
 2010-05-19 19:39:26 +00:00
drh
9ff27ecdb2 Add the SQLITE_FCNTL_SIZE_HINT operator to sqlite3_file_control() and use it 
to give the VFS hints about the ultimate size of a database file when the
file is growing.

FossilOrigin-Name: 2b7e3b4a30d6a7c4a8a4b8e7dd2ed728b565c96d
 2010-05-19 19:26:05 +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
drh
584c754d65 Revise the checksumming algorithm in wal.c. More variable refactoring. 
FossilOrigin-Name: 542b90eba6440a0bccef329788fd17a2d3fbeee6
 2010-05-19 18:08:10 +00:00
drh
6e81096fa2 Refactoring some variable names in wal.c. 
FossilOrigin-Name: 1d201ff51f7c5ecdf71a91ed25204b7130894282
 2010-05-19 17:49:50 +00:00
drh
027a128a78 Add a large comment to wal.c describing the WAL and wal-index file formats. 
FossilOrigin-Name: a71a22b52f4570e934063553a81b39268127dc44
 2010-05-19 01:53:53 +00:00
drh
29d4dbefaf Update the wal-index hash format so that hash-table space is reused following 
a rollback, thus preventing hash table overflows.  Add assert()s to verify
that hash tables do not overfill.  Further refactoring of the wal-index code.

FossilOrigin-Name: ada9a8c7b69c5dd2d66bbf62b61181651e6d2142
 2010-05-18 23:29:52 +00:00
drh
a2a42013d2 Refactoring of the WalIterator implementation. 
FossilOrigin-Name: b5b60fdcc5dcf41f2c79912075ac241f7ce220d6
 2010-05-18 18:01:08 +00:00
drh
5939f44375 Mark the shared-memory in the WAL implementation as volatile. 
FossilOrigin-Name: 0a6787908e989bd5e6af25acbdc59ebc8fa61d6d
 2010-05-18 13:27:12 +00:00
drh
e730fec883 Comment clarifications in wal.c. 
FossilOrigin-Name: a029be10172e2e6a2ef4e3eb2ea1bd0ca85b16ed
 2010-05-18 12:56:50 +00:00
drh
69c4696784 Remove an unreachable test from wal.c. 
FossilOrigin-Name: 7162c45673d1068d1fda55a70207a3cd77575502
 2010-05-17 20:16:50 +00:00
dan
982d4c0c72 Add a note to the documentation of sqlite3_wal_hook() to say not to return SQLITE_ROW or SQLITE_DONE. Or any other value that is not a valid SQLite error code. 
FossilOrigin-Name: 2f0b6cbf7b4fa31242ff4f6163226c22ae4f8c9b
 2010-05-15 10:24:46 +00:00