database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2026-10-26 21:59:27 +03:00
Code Activity
21,924 Commits 1,786 Branches 392 Tags
decimal
Commit Graph

163 Commits

Author SHA1 Message Date
drh
d924e7bc78 Use the sqlite3Realloc() interface internally, rather than the public 
sqlite3_realloc64() equivalent, to avoid unnecessary calls to
sqlite3_initialize().

FossilOrigin-Name: 1313557b512297e7b75ed748894379b2022aecf696d5a58318e46a668321c1ff
 2020-05-17 00:26:44 +00:00
drh
acc175215a Do not retry on a failed realloc() unless SQLITE_ENABLE_MEMORY_MANAGEMENT 
is available, meaning that the retry has some possibility of success.

FossilOrigin-Name: e9a8f910b5e2b84dd77364783f0610bca970cc88aa037c88636c72145b99f411
 2020-05-08 10:44:23 +00:00
drh
23bef340be Use AtomicStore() when setting the mem0.nearlyFull boolean to avoid 
harmless TSAN warnings and to forestall doubts about threadsafety.

FossilOrigin-Name: ce980af65a9b528f112baa22a95020a98ac5340155a0b53b09c46f99aad9b12b
 2020-04-28 14:01:31 +00:00
drh
9f603fcefd Use an AtomicLoad() macro in sqlite3HeapNearlyFull(). 
FossilOrigin-Name: 7556bc632e271d8a1e4fd836ce91e28213768ac09c90857b91171e9cd1009884
 2020-04-28 11:45:41 +00:00
dan
892edb69c4 Use __atomic_load_n() and __atomic_store_n() for a few more things where they are available. 
FossilOrigin-Name: a49f8ec552bede7da731e0571ccf49de1a30e7be3a5673150436c8b411ba6ffc
 2020-03-30 13:35:05 +00:00
drh
cf014f6cbd Refactor names. Use "small" instead of "mini" to describe the smaller 
of the two lookaside memory allocation sizes.

FossilOrigin-Name: 88d244983854cdc1a369c5df09ae00f1098784db768ba4e17b963d187dcb1009
 2019-12-31 15:12:34 +00:00
drh
e6068027ca Cleanup and performance enhancements for mini-lookaside. 
FossilOrigin-Name: 74805668430051032ae9b256c84e252755ee03075fc08293c948675ed40ec280
 2019-12-13 15:48:21 +00:00
numist
1b47c9c98e Reduce the number of call sites to dbMallocRawFinish in the case where n > lookaside.sz 
FossilOrigin-Name: e392e7f22861ce4b66e4bf84b59c8fd38568fc241a699e001f47fd82011f4d28
 2019-12-12 20:58:32 +00:00
numist
c947d6a4dc Fix an issue where malloc could be used to fulfill a small allocation when a large lookaside slot could have beeen used instead. 
FossilOrigin-Name: 611020e3378f4c81c277cccd84807ae51a816bbab6c3d887c91c5e5af3b5225f
 2019-12-12 20:39:47 +00:00
drh
0225d819c4 Change the size of a mini-lookaside allocation to a macro (MINI_SZ) rather 
than a magic number (128).

FossilOrigin-Name: 5e1949bca998f3c8c23a8ebf01c7a2e7a2af1fdad43886271e1fe0f25411551d
 2019-12-12 17:17:24 +00:00
numist
115d663c05 More efficient implementation of a lookaside allocator that supports mini (in this case, harcoded to 128B) slots. 
FossilOrigin-Name: b02fdc09c838f355d9efce57f817d6a86153153b4a1f2b763914f4aaa34cb76e
 2019-12-12 02:50:07 +00:00
drh
31999c5cac Fix a bug in the hard_heap_limit pragma so that it returns the new value of 
the hard_heap_limit, not the soft_heap_limit.  Change SQLITE_MAX_MEMORY so
that it works by setting the default hard_heap_limit value.

FossilOrigin-Name: 33fd0c3abcad5555a150990a22d9c1bab99e79be01143fccb9fafc9b52cf92c8
 2019-11-14 17:46:32 +00:00
drh
803f06bf62 Merge recent enhancements from trunk. 
FossilOrigin-Name: b8a631fd30d0732505679230684b3362c965438197a2b11518f01a77599c9202
 2019-11-14 15:21:15 +00:00
drh
31f69626df Performance optimization to the lookaside-memory disabling mechanism. 
FossilOrigin-Name: 17ce1c49cb0ed6fdd8c7c33431bc2afa217f1092c99b8dd608890a8e7aec7fb1
 2019-10-05 14:39:36 +00:00
drh
10c0e7115b Add the sqlite3_hard_heap_limit64() interface and the corresponding 
"PRAGMA hard_heap_limit=N" command.

FossilOrigin-Name: b0ccef61a7f92d20228becbf4f997bf0f4e46dad2deaf0896dc63b976ad1dd11
 2019-04-25 18:15:38 +00:00
drh
1cf197583d Give the sqlite3 object a pointer to the current Parse so that if an OOM 
occurs, it can automatically set the Parse.rc value to SQLITE_NOMEM.  This
avoids a frequent extra test of db.mallocFailed in the innermost parser loop.

FossilOrigin-Name: 5c6638040b3017c6be016441422d965a3ca00dd6ae1f78cadc0b54562978f64e
 2019-02-08 14:55:30 +00:00
drh
e75d1f5290 Tag an unreachable branch using ALWAYS(). 
FossilOrigin-Name: c42c734f11c58724f5d8b32cb1c92e274be350028868d6ed045b2cfd274c64e7
 2018-01-10 13:58:23 +00:00
drh
9b2e0435d2 Add and use the internal sqlite3DbSpanDup() interface. 
FossilOrigin-Name: a8e1545cb7aacb6a26a8c92a3ad4a3d584d150c3a00d2828c8adbb1ee19fcb6d
 2017-12-27 19:43:22 +00:00
drh
52fb8e1945 Faster memory allocation from lookaside by not trying to keep track of the 
number of outstanding allocations, and rather computing that value only
when requested.

FossilOrigin-Name: a06263f1efd2d45eac88b8d59e8fe8e458670fa3808c795feaa7f247fc36cbe9
 2017-08-29 20:21:12 +00:00
drh
b2a0f75c06 Remove the rarely-used scratch memory allocator. This makes the code smaller, 
faster, and easier to maintain.  In place of the scratch allocator, add the
SQLITE_CONFIG_SMALL_MALLOC configuration option that provides a hint to SQLite
that large memory allocations should be avoided.

FossilOrigin-Name: 54b000246cfb5c7b8adb61a17357ef5a49adddde9e48e8937834d5ba0beb8a6b
 2017-08-28 15:51:35 +00:00
drh
dbd6a7dc06 Split off sqlite3DbFreeNN() from sqlite3DbFree() and use it in cases where 
we know that the argument to be freed is never NULL.

FossilOrigin-Name: ad90e8bb5e47945607c8fb47b6ade8cfc52a9b684805cc40132629be0ecc14cc
 2017-04-05 12:39:49 +00:00
drh
a6bf20b587 Fix an error in the SQLITE_MAX_MEMORY implementation resulting from a bad 
merge.  Update the OSSFuzz interface so that it times out after running
the byte-code engine for 10 seconds.

FossilOrigin-Name: f8560c60d10c0365b33342ab05b5a953987b0471
 2017-03-10 17:03:11 +00:00
drh
1e45c7db56 Add the -DSQLITE_MAX_MEMORY=N compile-time option. The default is no limit. 
FossilOrigin-Name: eabd4ef498a0f0d97d65e321c4d06ab90523ed61
 2017-03-10 16:22:40 +00:00
drh
e43d6aee45 Add the SQLITE_MAX_MEMORY compile-time option that provides a hard upper bound 
on the amount of memory that SQLite will use, per process.

FossilOrigin-Name: 77dfe2abdae88dea81217f352d87e5ba2c822715
 2017-03-10 15:55:54 +00:00
drh
d879e3eb8d Change all legacy instances of "#if SQLITE_DEBUG" to "#ifdef SQLITE_DEBUG" for 
consistency.

FossilOrigin-Name: 670f10b24230863688270d12ac519609ade2302b
 2017-02-13 13:35:55 +00:00
mistachkin
40b84365e4 Typo fixes in comment. No changes to code. 
FossilOrigin-Name: c09dd5c0befaf5028abfead8114bd74a30ffe5d4
 2017-02-08 18:13:46 +00:00
drh
087a29c78b Always invoke the xRoundup() method of the memory allocator before calling 
xMalloc().

FossilOrigin-Name: 77b470b0df73dc5ae5ad2f0170ef7c50558c7c88
 2017-02-08 16:01:57 +00:00
drh
be7a0cee4e Fix the build for SQLITE_ENABLE_MEMORY_MANAGEMENT. 
FossilOrigin-Name: 8c85b8fdd7f0ba65fba83361d361a567b797a184
 2017-01-13 12:53:35 +00:00
drh
1d21bac8aa Avoid unnecessary calls to the xRoundup() method of the memory allocator when 
the soft heap limit is not set.

FossilOrigin-Name: 4209b89eab01814228a178963238e0dffffad2a4
 2017-01-10 16:09:46 +00:00
drh
1aa346950e Avoid a potential (harmless) signed integer overflow in memory usage 
accounting when calling sqlite3_realloc() to reduce the size of an
allocation.

FossilOrigin-Name: 2d71cbdf6bc24f0269027c70b39ea7f342436bdb
 2016-12-27 12:08:36 +00:00
drh
cee11adaaa Small size reduction and performance increase in the string duplicator. 
FossilOrigin-Name: cda998f080cb00779d8c0d1c83d8fe2b74462cd4
 2016-10-17 00:48:06 +00:00
mistachkin
fad3039c51 Enhance ability to debug out-of-memory errors. 
FossilOrigin-Name: 6a9c4a3ebfb7cc0738ef6634440ccab44a21ff28
 2016-02-13 23:43:46 +00:00
drh
f5818aa560 Make sure variable declarations occur at the beginning of blocks, even 
with SQLITE_DEBUG enabled.

FossilOrigin-Name: 2f7778e64d93ef237e23ceac01ea9808df5cf2a1
 2016-02-06 19:48:50 +00:00
drh
575fad6500 Add the slightly faster sqlite3DbMallocRawNN(db,n) routine for the majority 
cases where db is guaranteed to be not NULL.

FossilOrigin-Name: 0a802e96ab06e2643834b83671fa8353da1a348d
 2016-02-05 13:38:36 +00:00
drh
b84e574c89 Further performance improvements that fall out of the mallocFailed changes. 
FossilOrigin-Name: d94416ddca8f7ed727dd335d38155ea5945a86b7
 2016-02-05 02:42:54 +00:00
drh
4a642b6060 Improvements to the way that OOM errors are processed. 
FossilOrigin-Name: c3ef03478a5788c855b3aef385d43ae7f494f440
 2016-02-05 01:55:27 +00:00
drh
1da26a48dd Performance improvement in sqlite3DbMallocRaw(). 
FossilOrigin-Name: ff8eadbed5004ab03438f737492387dee6b9750a
 2016-01-20 03:36:32 +00:00
drh
ac536e613a Move pointer range comparisons into a macro, where they can be dealt with 
in a more portable way.

FossilOrigin-Name: ad3124c834b080aaaf24934d6f08b3601ac3ae53
 2015-12-10 15:09:17 +00:00
drh
56d90be183 Remove an unreachable branch in malloc.c. 
FossilOrigin-Name: a36b7fe92372a13ff0b6e08f1704496045c6f62a
 2015-10-26 12:55:56 +00:00
drh
59a052359d Remove a superfluous conditional from the memory allocation initialization. 
FossilOrigin-Name: 9ccf8f8d35723f2a9b59010b6d5f37a14164a188
 2015-10-15 17:21:35 +00:00
drh
039ca6ab59 Performance optimizations to the sqlite3MallocSize() by requiring the 
argument to always be non-NULL.

FossilOrigin-Name: cb65989b0710c65e4df69063b346344fdb1d12c7
 2015-10-15 16:20:57 +00:00
drh
b02392e6f0 Change sqlite3StatusSet() into sqlite3StatusHighwater() so that only the 
highwater mark is recorded.  This gives a small size reduction and
performance improvement.

FossilOrigin-Name: 6422d223dd10018703c6b083d29a3c35c837fc97
 2015-10-15 15:28:56 +00:00
drh
5fb72e5f3e No-op the sqlite3_memory_alarm() interface in a different way, that does 
not break legacy memory behavior.  This is a re-do of
check-in [5d3f5df4da9f40d5].

FossilOrigin-Name: 8250e2a487ee12c9a2dea5603ab60aed51e5dc7b
 2015-09-10 01:22:09 +00:00
drh
4ef299a32c The sqlite3_memory_alarm() interface has been deprecated and undocumented 
for almost 8 years (since version 3.5.3).  Change it into a no-op.

FossilOrigin-Name: 5d3f5df4da9f40d5897b5c23b2ea9333fc18ac2c
 2015-09-02 14:56:56 +00:00
drh
054bbabc76 Small size reduction and performance increase in sqlite3DbMallocSize(). 
FossilOrigin-Name: 8a80967f849eed002a701235ed7fb406099d566e
 2015-09-01 20:09:33 +00:00
drh
01c5c00c12 Preserve the number of requested PAGECACHE pages even if the memory pointer 
or size is zero.  Enhance the pcache1.c header comment to explain the memory
layout of a page cache line.

FossilOrigin-Name: dacb2a615ce1c0573baf4518000454038745cf2a
 2015-07-04 18:15:04 +00:00
drh
597d2b6412 Change sqlite3ApiExit() so that its first argument is never NULL. 
FossilOrigin-Name: 791b706ec6c3e80885666e48e01524f0e9a7557e
 2015-06-30 03:13:47 +00:00
drh
22c17b8bf5 Simplifications to error message processing. Fix a possible problem in error 
message formatting when vacuuming a database with a corrupt schema.

FossilOrigin-Name: 56ef98a04765c34c1c2f3ed7a6f03a732f3b886e
 2015-05-15 04:13:15 +00:00
drh
df5e1a00de Fix the sqlite3_memory_used() and sqlite3_memory_highwater() interfaces so 
that they really do provide a 64-bit answer.

FossilOrigin-Name: 8a0d5d5e9a4515603c47e9354af47550155a6f2d
 2015-05-10 02:01:08 +00:00
drh
592f0cb15e Avoid leaving the malloc subsystem in a partially initialized state if 
the low-level initialization callback fails.

FossilOrigin-Name: 3e872011ff5e27738c282f46d2b5803d94fe4b76
 2015-03-26 17:04:23 +00:00