database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-06 15:49:35 +03:00
Code Activity
10,496 Commits 1,606 Branches 185 Tags
7a5bcc0f08d1b8b45adb9870c31e4c1b68c644bd
Commit Graph

840 Commits

Author SHA1 Message Date
drh
32055c2499 Allow the error message from "PRAGMA integrity_check" to be longer than 
20,000 bytes.

FossilOrigin-Name: 120c82d56ecb574f46db01679317b8062d8779ed
 2012-12-12 14:30:03 +00:00
mistachkin
5f070c7bc8 More warning fixes. 
FossilOrigin-Name: 51a6a797e1d61c4361b87cdf3467bfd3ce161cc3
 2012-10-18 10:35:19 +00:00
dan
b483eba051 Ensure that when the source of a backup is a database that is zero bytes in size, the final destination database consists of at least one page. Truncating it to zero bytes is equivalent to zeroing the schema cookie and change counter, which can cause problems for existing clients. 
FossilOrigin-Name: af5c9ee4a453f71c03f24ad08824ced6c1b97afb
 2012-10-13 19:58:11 +00:00
mistachkin
e7c54168fa Work around an optimization issue with the MSVC compiler for ARM. 
FossilOrigin-Name: 7d301fdfeec540e4a58f43bff04d219e9f769dc4
 2012-10-02 22:54:27 +00:00
drh
a1f3853793 Omit the sqlite3GetReservedNoMutex() routine in build configurations where 
it is not used.

FossilOrigin-Name: f193dbb6b96b2f49dd0d6345802c9c006cd99e3c
 2012-10-01 12:44:26 +00:00
dan
0094f37e1f Avoid calling sqlite3BtreeEnter() in a corner case where the corresponding database handle mutex (sqlite3.mutex) may not be held. This prevents a potential deadlock or crash that can occur if the backup API, shared-cache mode and SQLITE_HAVE_CODEC are all in use. 
FossilOrigin-Name: 89b8c377a6f03d9fa885f3f94c1f0b1eec263dea
 2012-09-28 20:23:42 +00:00
mistachkin
70a1b71fb6 Modify the clearCell function to use SQLITE_CORRUPT_BKPT in the one place it was not. 
FossilOrigin-Name: 472beb306a4fa7103837d4417aef7d66eef49993
 2012-09-28 18:13:35 +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
drh
f2f105d40e Remove tab characters from source code files. Replace them with spaces. 
FossilOrigin-Name: 7edd10a960d5ff121e470b0549b0aa9fb7760022
 2012-08-20 15:53:54 +00:00
drh
ec73930adc Add an assert() to the btree rebalancer in order to silence a 
clang/scan-build warning.

FossilOrigin-Name: 6730579cf5c6c74cb293e7237d896d3a3a36b691
 2012-08-14 18:43:39 +00:00
dan
7d6885ae8a When populating an index b-tree as part of a CREATE INDEX or REINDEX statement, distribute cells between up to three siblings in balance_nonroot() instead of four. This produces identical database files, but is slightly faster. 
FossilOrigin-Name: b0d31e779ecf01c5a235443c05f488b177ac3045
 2012-08-08 14:04:56 +00:00
dan
f64cc49962 When building a b-tree as part of a CREATE INDEX or REINDEX statement, attempt to pack keys into pages as tightly as possible. 
FossilOrigin-Name: efea62b96c6a242c8ac2bdad70e50c87aee5e871
 2012-08-08 11:55:15 +00:00
dan
428c218c90 When reusing pages as part of creating a new index, allocate the leaves from each free-list trunk page in ascending order, instead of trying to maximize localization for each individual allocation. This increases the chance that pages will be written to disk in ascending order by a large CREATE INDEX statement, improving overall performance. 
FossilOrigin-Name: d045f8b2d44e388d8c4549ff02d4ca7eff4e2038
 2012-08-06 18:50:11 +00:00
drh
9c67b2aae0 Add the mode=memory option to URI filenames, which when present forces the 
database to be an in-memory database.  This enables named in-memory databases.

FossilOrigin-Name: 651520fa84ee0c488bef660bab9865500309d5e9
 2012-05-28 13:58:00 +00:00
drh
d4e0bb0e65 Have user interfaces report out the filename of in-memory databases as an 
empty string, as it always has.  This simplifies the changes.

FossilOrigin-Name: 595dfdbffefb2598cba89980f885289d1c5f5833
 2012-05-27 01:19:04 +00:00
drh
4ab9d254e0 Only allow :memory: databases to share cache if there are created using a 
URI filename.  This minimizes the risk of breakages in legacy applications
that have shared-cache enabled but also use :memory: databases which they
expect to keep separate.

FossilOrigin-Name: e3ad61e0308a8442c2bdb7cdb3465576cd39ed4a
 2012-05-26 20:08:49 +00:00
drh
afc8b7f0c1 Enable the use of shared cache for an in-memory database, so that separate 
database connections can share the same in-memory database.

FossilOrigin-Name: 4590e433f2a595bb80fb061024b0a3d2ca25b7b2
 2012-05-26 18:06:38 +00:00
dan
1235bb1815 Modify the integrity-check code to reduce the size of the large allocation from 4 bytes to 1 bit for each page in the database file. 
FossilOrigin-Name: fa3a498dfe9ed59c30da5eaa0d7cad167fd4e393
 2012-04-03 17:43:28 +00:00
drh
d60f4f4c95 When an incremental blob cursor is invalidated (occurs when an SQL statement modifies or deletes the row the blob cursor points to) release all page references held by the cursor. Otherwise, the presence of these references may cause other code in btree.c to incorrectly infer that the database is corrupt. 
FossilOrigin-Name: 341b703ce16361a64ed8bba64ff46792132c0b56
 2012-03-23 14:23:52 +00:00
drh
0f198a7409 Change the ROLLBACK command so that pending statements to not block it. The 
pending statements instead return SQLITE_ABORT upon next access.  Note: This
causes separate shared-cache connections in read_uncommitted mode to abort as
well.

FossilOrigin-Name: 9b66c79e054c8a109d1ee8d35fed1c42814c330d
 2012-02-13 16:43:16 +00:00
drh
2cbd78b70e Reduce the size of the MemPage object by about 32 bytes. Other structure 
size optimizations.

FossilOrigin-Name: 21695c3476804477cb378b5a643196380e7e2281
 2012-02-02 19:37:18 +00:00
drh
33f111dc72 Remove the undocumented PRAGMA omit_readlock hack. 
FossilOrigin-Name: 96900c47e4fc6ed55cefc10d55d3d8d16bcb1d31
 2012-01-17 15:29:14 +00:00
dan
6c2688c8d4 Fix typos in a testcase() macro introduced by the previous commit. 
FossilOrigin-Name: 0467742fd6ef33dfe4df66e5046f075fe8e0260d
 2012-01-12 15:05:03 +00:00
dan
bb246c4da0 Remove some assert() statements that can fail with corrupt databases. 
FossilOrigin-Name: 7654ae71bd26ae5d713935624d2b6cb8d2e4633f
 2012-01-12 14:25:55 +00:00
mistachkin
0547e2ff7b Fix harmless compiler warning seen with MSVC. 
FossilOrigin-Name: 9612bcd648c7654050ddb2f955a28cbc527a8c2e
 2012-01-08 00:54:02 +00:00
drh
c91663499e Combine various boolean variables in the BtShared structure into a single 
boolean vector.  Also make performance improvement simplifications to
sqlite3BtreeMovetoUnpacked().

FossilOrigin-Name: 119493318e0ad4c2858fe1484b0d71669bd81531
 2012-01-05 23:32:06 +00:00
drh
2f32fbae31 Remove an incorrect assert() in btree.c. 
FossilOrigin-Name: c1691d998a03fee3bef137ccf2e8ca45acac2df4
 2012-01-02 16:38:57 +00:00
dan
27d47fbe6e Avoid 32-bit overflow when calculating the byte offset of an overflow page in SQLITE_DIRECT_OVERFLOW_READ code. Fix for [ac0ff496b7]. 
FossilOrigin-Name: c5256b59ad70104c1e181b9f49d1d712cf4cc9f6
 2011-12-21 17:00:16 +00:00
drh
070ad6b6fe Restore the test for sqlite3OsFullPathname() failure that was mistakenly 
removed when [ceee03c79a] was backed out by [69ec53fc1c].

FossilOrigin-Name: 4d3cf9e1d8ac356db5a708913f614e42a6a56b94
 2011-11-17 11:43:19 +00:00
drh
3def2357e6 Make sure a corrupt index does not cause a buffer overread in 
sqlite3VdbeRecordCompare().

FossilOrigin-Name: 471cf0d8e7857110e525e029c2d535cb518dba6a
 2011-11-11 00:27:15 +00:00
drh
30ddce6ff4 Added the tool/warnings-clang.sh script. Changes so that there are no 
warnings with either gcc or clang even including FTS4 and RTREE and
both with and without SQLITE_THREADSAFE=0.

FossilOrigin-Name: 39408702a989f907261c298bf0947f3e68bd10fe
 2011-10-15 00:16:30 +00:00
drh
b07028f71c Add assert() statements and eliminate needless variable assignments in order 
to get the clang scan-build utility to report zero problems against the
SQLite core.  Clang's static analysis did find one real problem - but it was
in the command-line shell, not in the SQLite core.

FossilOrigin-Name: 60fee9574b0125705787e33c16f116cf188c8323
 2011-10-14 21:49:18 +00:00
drh
8a575d9aa9 Clarify a comment and fix a code formatting issue in btree.c. 
FossilOrigin-Name: 4f1a558d0013fbf3fe00bdf5883e61a1f3779831
 2011-10-12 17:00:28 +00:00
dan
f4ba109356 Add the SQLITE_DIRECT_OVERFLOW_READ compile time option. 
FossilOrigin-Name: 2ab14a846727857175eac7961b7338c4d3b417ca
 2011-10-08 14:57:07 +00:00
mistachkin
0fe5f95c7f Remove 'const' from a variable that might actually be written when an OOM error occurs. Also, fix a couple MSVC/Win32 compiler warnings. 
FossilOrigin-Name: 3035dc1c7398791d550f4c02774ef7f961b4bb02
 2011-09-14 18:19:08 +00:00
dan
42acb3e597 Fix a minor performance regression in btreeMoveto(). 
FossilOrigin-Name: d0712dfb24867a807c9cddcc12bd0aebe1d3e085
 2011-09-05 20:16:38 +00:00
dan
03e9cfc223 Refactor the sqlite3VdbeRecordUnpack() interface to better accommodate the vdbesort.c module. 
FossilOrigin-Name: f115b2303509c678dbe83b2fa3d9c40d82882813
 2011-09-05 14:20:27 +00:00
drh
34163c6831 Remove some dead code. Fix a faulty assert(). Improve some variable names. 
FossilOrigin-Name: a9a64592cf88580cb254fb0aac65a2f2085976ec
 2011-09-02 21:42:33 +00:00
dan
7733a4db4b Combine two malloc calls in vdbesort.c. 
FossilOrigin-Name: cf48ad8353e28339d00f448bb729e10a7f2aad72
 2011-09-02 18:03:16 +00:00
dan
5134d1357e Instead of a temporary b-tree, use a linked-list and merge-sort to sort records in main memory in vdbesort.c. 
FossilOrigin-Name: 7769fb988d9be0f2d8129aaac19620ac88f9b4a6
 2011-09-02 10:31:11 +00:00
drh
e42a9b431b Add checks to make sure cells in corrupt database files 
do not overflow a page when doing autovacuum.
Problem detected by valgrind.

FossilOrigin-Name: d0b347b412376d22e9f0770ac083dafb5e480dd0
 2011-08-31 13:27:19 +00:00
dan
a205a486d2 Experimental changes to improve the performance of OP_Next. 
FossilOrigin-Name: 1a249845251199c00817893add300a1a654b4df9
 2011-08-27 18:48:57 +00:00
drh
2a5d9908f9 Create a new pager type, PAGER_SORTER, for use in the external merge sort. 
Such pagers are always held in memory but do report when they are under
memory pressure by calling pagerStress.

FossilOrigin-Name: c71d73201d950355862dd8d5de142c9673888755
 2011-08-26 00:34:45 +00:00
dan
06199d84e8 When copying a rollback mode database over a WAL database using the backup API, leave the destination database in WAL mode (instead of switching it to rollback mode). Fix for [af95b8c609]. 
FossilOrigin-Name: 35e6ac18e3d030095da57fff87a288939e9be93f
 2011-08-23 11:47:06 +00:00
dan
c6e734554f Change to using packed-memory-arrays instead of b-trees when performing an offline merge-sort for CREATE INDEX. This makes it easier to control the number of disc seeks required when merging. 
FossilOrigin-Name: a4770d079c1b236eb54751e75a44cccc997c6b93
 2011-08-04 12:14:04 +00:00
drh
2ce71b4e7a Add assert() statements to verify that u16 pointers associated with 
the enhancement in [897f56a158] are always 2-byte aligned.

FossilOrigin-Name: 98ccfa930e8e5f10808a518e3e22e85e8a8a65c2
 2011-06-06 13:38:11 +00:00
drh
afb9817f8c Performance improvement to the btree search routine. 
FossilOrigin-Name: 65db822f200bafe9abe59b33b17b2c643c17c5e8
 2011-06-04 01:43:53 +00:00
drh
61d2fe955c Performance improvements on memory copies inside of btree by moving 2 bytes 
at a time instead of just 1 byte at a time.

FossilOrigin-Name: 897f56a158ebe62758c9998e4941ae046c75fb99
 2011-06-03 23:28:33 +00:00
drh
68f2a57698 Factor an "if" out of a loop in balance_nonroot() for about a 1% performance 
increase.

FossilOrigin-Name: 1bd72d0c616e20fdb395c72ecd96579090ae26cb
 2011-06-03 17:50:49 +00:00
drh
c3f1d5f095 Minor performance improvements. 
FossilOrigin-Name: f9950c6af1813f724dacd7455f472acec921b06a
 2011-05-30 23:42:16 +00:00