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8,116 Commits 1,607 Branches 185 Tags
f65bc9119c8d02a9deefc19e891da0d5ee88bc2d
Commit Graph

357 Commits

Author SHA1 Message Date
drh
f65bc9119c Fix a typo in a comment in os_unix.c. 
FossilOrigin-Name: e1e7312580a8b19825b0c52fa8af6c9382f99f22
 2010-07-14 20:51:34 +00:00
dan
ddb0ac4b9f On unix, try to create the *-wal and *-shm files with the same permissions as the associated database file. 
FossilOrigin-Name: e5d180eed245437b61bfb257ee01e2571c93afe7
 2010-07-14 14:48:58 +00:00
drh
5d4feffe7d Fix the unix driver to return an I/O error if unlink fails for any reason 
other than the file not existing in the first place.

FossilOrigin-Name: 90d73c66bfa880cdeb688b3016c8b1c58bfcf35f
 2010-07-14 01:45:22 +00:00
drh
e11fedc589 Change the name of the xShmClose VFS method to xShmUnmap, everywhere. 
FossilOrigin-Name: c2d27cf51d33e6f38bab37008d39074051f75274
 2010-07-14 00:14:30 +00:00
drh
6e1f482824 Tweaks to the new shared-memory interface design - mostly comment changes. 
FossilOrigin-Name: 6336de7aa96a6e1e68cc123e5d5f485d790d95a2
 2010-07-13 23:41:40 +00:00
dan
da9fe0c327 Changes so that the xShmOpen VFS method is no longer required. Its job can be done by the first call to xShmMap. Rename xShmClose to xShmUnmap. 
FossilOrigin-Name: f4780bde62c6c19146d2723c101540b8db898d38
 2010-07-13 18:44:03 +00:00
drh
2667be5e3f Remove the unused xRename() method from the sqlite3_vfs object. 
Add better documentation on the xCurrentTimeInt64() method.

FossilOrigin-Name: 51ec0e5432dd6849b83a3d969a018482eb3bb083
 2010-07-03 17:13:31 +00:00
drh
0ab216a6b4 Fix compiler warnings in the proxy locking code. 
FossilOrigin-Name: 26c7689cfedf03e65bcd51df68d128101ed2c1ec
 2010-07-02 17:10:40 +00:00
drh
ff82894faa Suppress various compiler warnings. 
FossilOrigin-Name: e82d008eaffb5522080cad6c69c1b194b78eadbd
 2010-06-26 21:34:06 +00:00
drh
bd9676c19e Adjust the shared-memory locking range to account for the new version number 
values in the wal-index header.

FossilOrigin-Name: a6dc0df304876b51cef5402b0e21330f10aabccf
 2010-06-23 17:58:38 +00:00
dan
248af428ea Merge latest trunk change. 
FossilOrigin-Name: f6d26e07b70965e332b1589804ca938593a5f432
 2010-06-21 06:00:15 +00:00
drh
19515c8da1 Fix an uninitialized variable in os_unix.c. 
FossilOrigin-Name: 822a0283c6bc1c75001f3d1c528a4ff89c6b039c
 2010-06-19 23:53:11 +00:00
drh
7234c6d6f6 Change the unix VFS to always allocate shared-memory using a file in the 
same directory as the database.  Otherwise, a chroot might cause different
processes to use different shared memory files resulting in database
corruption.

FossilOrigin-Name: 2241788bc85fbc48e9cfecb95fe0a858338e37cb
 2010-06-19 15:10:09 +00:00
dan
83acd423a1 Change the implementation of the unix implementation of xAccess() so that it returns 0 (does not exist) to an SQLITE_ACCESS_EXISTS query on a file that exists but is zero bytes in size. 
FossilOrigin-Name: 077b0e5bcd849130c8df373fc2134c4b44351882
 2010-06-18 11:10:06 +00:00
dan
b0ac3e3a17 Fix a memory leak that can occur in os_unix.c if an IO error occurs within the xUnlock method. 
FossilOrigin-Name: 6c5c04eea1f0e8d61883ee8675c249fbf895dc01
 2010-06-16 10:55:42 +00:00
drh
6b017cc6d4 Move the xShmMap method to in between xShmLock and xShmBarrier, since it seems 
to fit in there logically.

FossilOrigin-Name: 58dfd83d8b7905391e2a06bb918ffa209c6de6b5
 2010-06-14 18:01:46 +00:00
dan
9785fc9510 Add the new xShmMap (formerly xShmPage) to os_win.c. 
FossilOrigin-Name: 13e7a8242206bca4b5bf356ef074e66474d39609
 2010-06-14 16:16:33 +00:00
dan
188019153d Remove xShmGet/Size/Release from the sqlite3_vfs structure. Change the name of xShmPage to xShmMap. Remove some code that is now unused from os_unix.c and some of the test VFS implementations. 
FossilOrigin-Name: fc0cabc15c97dde6a852b4f07df6d30f1d2c04bc
 2010-06-14 14:07:50 +00:00
dan
13a3cb82ce Experimental change to the xShmXXX parts of the VFS interface. 
FossilOrigin-Name: ca68472db01c14a899892007d1cbaff5e86ae193
 2010-06-11 19:04:21 +00:00
dan
7df6c2c04b In os_unix.c, call munmap() to unmap a shared-memory region prior to closing the associated file descriptor. 
FossilOrigin-Name: 95cc976f1520bdaedd8f93b0e9fbef94e4e2c8cc
 2010-06-07 19:26:54 +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
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
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
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
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
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
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
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
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
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
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
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
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
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
5939f44375 Mark the shared-memory in the WAL implementation as volatile. 
FossilOrigin-Name: 0a6787908e989bd5e6af25acbdc59ebc8fa61d6d
 2010-05-18 13:27:12 +00:00
drh
ff59a114bd Fix a typo that (by bad luck) was not a syntax error but which caused some 
important lines of code to be skipped when SQLITE_DEBUG was not used.

FossilOrigin-Name: 9ef99d97d25aae81df971d40ad10c544b8f30053
 2010-05-14 20:15:51 +00:00
drh
d91c68f6cc Simplifications to the SHM implementation in os_unix.c, taking advantage 
of the removal of the LinuxThreads mess.

FossilOrigin-Name: d1debe5def82a6bc72f11b8787176ac60259630f
 2010-05-14 14:52:25 +00:00
drh
8af6c228f8 Simplify os_unix.c by removing support for LinuxThreads. Linux systems must 
either use NPTL or else not share database connections across threads.

FossilOrigin-Name: e294b696ba91512b1ca5547774c51ea07b4cb5bc
 2010-05-14 12:43:01 +00:00
drh
308c2a5c0f Change the OSTRACEn() macro to OSTRACE(()). Also rename some internal fields 
and variables in os_unix.c to be more meaningful and searchable.

FossilOrigin-Name: 5fe529f239cddbf4b7ea57abb02d95cc0d94f5f5
 2010-05-14 11:30:18 +00:00
drh
a925fd256b Change the xShmSize() implementation in os_unix.c so that it will only 
increase and never decrease the size of a shared-memory segment.

FossilOrigin-Name: 149d2ae4a6fe2f86822f286d2a7092c51bec7ebb
 2010-05-13 08:33:35 +00:00
drh
d9e5c4f6ed Refactoring the VFS-SHM methods used by WAL. This version compiles and 
runs non-WAL test cases but crashes and burns on wal.test.

FossilOrigin-Name: 2b00152c1ac0b3735aa6cfab61259ff04d81c701
 2010-05-12 18:01:39 +00:00
dan
97c1f6c8f2 Have os_unix.c use the suffix "-wal-index" for wal-index files instead of "-wal-inde". 
FossilOrigin-Name: 885e854e7cdc79ecc9d5772d563ddc0f61753ab6
 2010-05-11 16:29:54 +00:00
drh
09b1330026 Fix an off-by-one error while constructing the name of the mmap file for 
the wal-index under os_unix.c.

FossilOrigin-Name: 6e3735f72cb7d2f4d16c8f9bc59ff159c75243e5
 2010-05-10 19:51:32 +00:00
drh
1c5bb4d69c Fix an uninitialized variable in OSX proxy locking. 
FossilOrigin-Name: 96d6eaf4d2be453191b36875811d9556ad0763ed
 2010-05-10 17:29:28 +00:00
drh
e874d9ed79 Change the xShmOpen() method of the VFS to take the database file name as 
its argument, not the WAL file name.  Also fix some unrelated compiler
warnings.

FossilOrigin-Name: a65c2939267ef6acec4e355a207f98f217e263d6
 2010-05-07 20:02:23 +00:00
dan
65be0d8cce Instead of transitioning to RECOVER state from CHECKPOINT when a recovery is required, perform the recovery while holding the CHECKPOINT lock. 
FossilOrigin-Name: bb0b6021e721c2e4f1533ab18381604c6b7b31d5
 2010-05-06 18:48:27 +00:00
drh
ccd13d1f80 Further simplifications to the SHM locking logic. Remove the SQLITE_SHM_QUERY 
option.  Unify the WRITE to READ and RECOVER to READ transitions.

FossilOrigin-Name: e9bfa6e4ce7d1edc6be8b9173ac3b6bfd180632a
 2010-05-05 19:09:49 +00:00
drh
4bc79def36 Simplifications to the SHM locking implementation in os_unix.c. 
FossilOrigin-Name: 9de05bfb09e29bafdf5782263330fe8eefcfaba3
 2010-05-05 18:20:07 +00:00