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a2ac9df170
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7843 Commits

Author SHA1 Message Date
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
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
drh
89c3f2ff43 Silently ignore errors trying to set the default journal_mode while doing 
an ATTACH.

FossilOrigin-Name: b9af4ad2efadfb2fb9e338dc081a6231f1536700
 2010-05-15 01:09:38 +00:00