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winFileMapping
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7475 Commits

Author SHA1 Message Date
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
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
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
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
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
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
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
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
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
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
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