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47 Commits

Author SHA1 Message Date
drh
56d65cd7b9 Provide the SQLITE_DEFAULT_LOOKASIDE compile-time option and make it's default 
value be 1200,100 (raised from 512,125 in the latest release).

FossilOrigin-Name: 584da48f9e818f25134e0a62fb7e84f07019511f
 2017-01-02 19:02:20 +00:00
drh
cdfffed790 Change the default lookaside configuration from 500 slots of 128 bytes each to 125 slots of 512 bytes each. This uses the same amount of memory (64,000 bytes) but seems to perform much better in test applications. 
FossilOrigin-Name: 52a12e47de88744187bd1c71f2820885cde414a8
 2016-12-21 21:26:58 +00:00
drh
d12602a9c5 Rename the SQLITE_OMIT_BUILTIN_TEST compile-time option to SQLITE_UNTESTABLE. 
FossilOrigin-Name: f360818737e73ee4f944685a547abc8f14f47819
 2016-12-07 15:49:02 +00:00
drh
22fa36dc04 Clarification and typo-fixes in comments. No changes to code. 
FossilOrigin-Name: e2cd79aa3104c51035bf29c548c322564731b75f
 2016-09-29 15:53:28 +00:00
drh
9e5eb9c8cc Revise the implementation of OP_Once so that it is smaller, faster, and uses 
less memory.  This also fixes an obscure bug introduced 3 days ago by check-in
[5990a1bdb4a073].

FossilOrigin-Name: 6bf5ba10d28f1b0a32aa9a560ae3143a1235eadb
 2016-09-18 16:08:10 +00:00
drh
244b9d6ec6 Performance optimization to sqlite3Dequote() and its callers. 
FossilOrigin-Name: 9efe2265b1e70172778d333c5b9d9a76095427ab
 2016-04-11 19:01:08 +00:00
drh
8c71a98ce1 Add the SQLITE_CONFIG_STMTJRNL_SPILL option for sqlite3_config(). 
FossilOrigin-Name: b6c4202432dc96f8f1740f52d0bf872116357fcc
 2016-03-07 17:37:37 +00:00
drh
80738d9c3e Improvements to the application-defined function mechanism so that it is 
more compact and runs faster, especially when the application defines
thousands of new SQL functions.

FossilOrigin-Name: 3201fbcc5105d23132e6b8b7ac825e66af4f8a39
 2016-02-15 00:34:16 +00:00
drh
f19aa5fa6f Changes to the way that the default BINARY collating sequence is recorded 
result in a slightly smaller and slightly faster executable.  More work could
be done to make this cleaner.

FossilOrigin-Name: 2081d75767dc590b4c8457e5f8e5f18ba5f8eaa7
 2015-12-30 16:51:20 +00:00
drh
4297c7c4be Add a compile-time constant for configuring the default pagecache setup. 
FossilOrigin-Name: ad5fdfbac85682f0f0dee62e1086f40026a58be2
 2015-07-07 21:14:42 +00:00
drh
ee70a84ea7 Enhance separate pcache1 to allocate a block of pages from heap on startup, 
if possible, for a 5.2% performance improvement.

FossilOrigin-Name: aa7341c8736732a0a59f6688cc34e78be02a7bfc
 2015-07-06 18:54:52 +00:00
drh
db222adfd3 Fix errors in the EBCDIC upper-case to lower-case translation table. 
FossilOrigin-Name: 905009f6723040d4da4776b6fd07e83c628dea2b
 2015-02-19 17:16:14 +00:00
drh
3bd1791dfb Add the SQLITE_CONFIG_PMASZ start-time option. 
FossilOrigin-Name: acb0d1e8324f19da3d4d577d58748848de1bcef7
 2015-01-02 15:55:29 +00:00
drh
86a11b8a6a Fix harmless typos in comments. 
FossilOrigin-Name: 94c564da4c2cf5dffe58fdf7a180e9ba4cc3de69
 2014-11-07 13:24:29 +00:00
drh
4d9f188f00 Add various requirements evidence marks for sqlite3_config() options. 
FossilOrigin-Name: d423349d2cd8bc7e04f3d90ca7bab11e1ad86e25
 2014-11-04 17:23:24 +00:00
drh
00729cba46 Updates to documentation and requirements marks. No code changes. 
FossilOrigin-Name: 0f8102d71a0ee828629f037775ad86fe2a544120
 2014-10-04 11:59:33 +00:00
peter.d.reid
60ec914c74 Fix typos in comments. No code changes. 
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
 2014-09-06 16:39:46 +00:00
drh
c007f61bb0 Repurpose the SQLITE_TESTCTRL_FAULT_INSTALL test-control to register a 
callback to be invoked by sqlite3FaultSim().  That test-control has been
unused since 2008-06-20 and was never used in any official release.

FossilOrigin-Name: 0d43a7ad9abe821e33e0bf83a997aa4461b1e3f2
 2014-05-16 14:17:01 +00:00
drh
09fe614372 Add a new sqlite3_test_control() that indicates that database files are 
always well-formed.  Use this during testing to enable assert() statements
that prove conditions that are always true for well-formed databases.

FossilOrigin-Name: 15e4f63d1f3cbcd0aa789fd3e460cd6e4d3338f9
 2013-11-29 15:06:27 +00:00
drh
9b4c59fa1b Refactoring the mmap interface. The controlling pragma is now "mmap_size" 
instead of "mmap_limit".  Also change SQLITE_CONFIG_MMAP_LIMIT and
SQLITE_FCNTL_MMAP_LIMIT to SQLITE_CONFIG_MMAP_SIZE and
SQLITE_FCNTL_MMAP_SIZE, respecctively.  
The default mmap_size is now always 0, meaning that
memory mapped I/O is off by default.  There is a new compile-time option
SQLITE_MAX_MMAP_SIZE that determines a hard upper bound on the mmap_size.
Setting SQLITE_MAX_MMAP_SIZE to zero disables the memory-mapped I/O logic
and causes it to be omitted from the build.  An extra argument is added
to SQLITE_CONFIG_MMAP_SIZE that can optionally lower the SQLITE_MAX_MMAP_SIZE
at start-time. The SQLITE_MAX_MMAP_SIZE is zero for platforms where we 
know that it does not work, meaning that it cannot be turned on by mistake
on those platforms.

FossilOrigin-Name: ea1404a10abd7f68e1f8e0708c8a3199d1f79665
 2013-04-15 17:03:42 +00:00
drh
a1f42c7c32 Add the SQLITE_CONFIG_MMAP_LIMIT configuration option for overriding the 
SQLITE_DEFAULT_MMAP_LIMIT compile-time setting.  Enhance "PRAGMA mmap_limit"
so that without a specific database name, it sets the limit on all database
files and changes the default for any future databases that might be added
using ATTACH.

FossilOrigin-Name: 78141d0a16dd1d56b575fccd149de7fa789cb06c
 2013-04-01 22:38:06 +00:00
dan
ac45593931 Add an option to register global hooks used for logging all SQL executed by an application. 
FossilOrigin-Name: cd501bbccf3e62b002317592cc331770b32c129a
 2012-11-26 19:50:41 +00:00
drh
de9a7b8a94 Add the ability to disable the covering-index-scan optimization at compile-time, 
start-time, or at run-time.  Add test cases to check this configurability.

FossilOrigin-Name: ccb8ecc30c8e6c7760131250297c2e452bbac43b
 2012-09-17 20:44:46 +00:00
drh
13e0ea9923 Fix harmless compiler warnings. 
FossilOrigin-Name: 1e6a698aab9270637d3ea00fd6b0e94f4172e875
 2011-12-11 02:29:25 +00:00
dan
22e21ff4fc Experimental change to the pcache interface to allow page buffers to be allocated separately from their associated container structures. 
FossilOrigin-Name: c275c9d323cb1dccb031b199d413ac3a0b244fea
 2011-11-08 20:08:44 +00:00
drh
432e0bc6dc Increase the default lookaside cache line size from 100 to 128 bytes. 
FossilOrigin-Name: db019465036171fcad31181bec7d6ac185f50430
 2011-09-19 13:01:53 +00:00
dan
dec6f79d40 Add a missing initializer for sqlite3GlobalConfig.bLocaltimeFault. 
FossilOrigin-Name: 7fe8ba2ec762d258b04e775766c82e5e541ab5d1
 2011-06-21 15:27:54 +00:00
dan
cd74b611f4 Add the start of the "uri-filenames" feature. 
FossilOrigin-Name: b8a8132e7148a7c90ca1352f20ab71d97b0bc4b0
 2011-04-22 19:37:32 +00:00
drh
094430eb71 Make the result of an IN or NOT IN expression with an empty set on the 
right-hand side always either false or true, respectively, even if the
left-hand side is NULL.  Ticket [80e031a00f45dc]

FossilOrigin-Name: c288ac644d0bfda2b9bc204dc86df8e74d4f6843
 2010-07-14 18:24:06 +00:00
drh
f83dc1ef3f Remove global variables when compiled with SQLITE_OMIT_WSD 
FossilOrigin-Name: dd10a547f10364058025c48b28d8fd240bf46aff
 2010-06-03 12:09:52 +00:00
drh
3f28070109 Add a new, experimental logging interface designed to aid in debugging of 
deeply embedded projects that use SQLite.

FossilOrigin-Name: 103321e37ae46eacfad4e127d13477ad5dd02bab
 2010-02-18 18:45:09 +00:00
drh
af2b572028 Use the sqlite3CtypeMap[] to improve the speed and reduce the size of the 
logic in the tokenizer that recognizes identifiers.

FossilOrigin-Name: 1c9243b0760741f48b15efb0da661255177aed8b
 2009-11-16 15:11:51 +00:00
drh
a6c2ed91ca Optimizations to the main loop inside sqlite3VdbeExec() to help VDBE byte code 
run a few percent faster.

FossilOrigin-Name: d622ac6ac7a297754494d3a33dbaeea02836272e
 2009-11-14 23:22:23 +00:00
dan
e1ab219309 Add tests to check that sqlite recovers from an error in sqlite3_initialize() correctly. 
FossilOrigin-Name: 904a371c6c9d3f20332b37767b06161fa0a78113
 2009-08-17 15:16:19 +00:00
drh
9ac06509f1 Enhanced documentation and minor code tweaks in preparation for hardening 
the sqlite3_initialize/shutdown interfaces against initialization failures.

FossilOrigin-Name: 98c49e6135ae6268a80de88f8b0284f88ef32e1d
 2009-08-17 13:42:29 +00:00
drh
c7a3bb94c2 Make the pending byte adjustable via sqlite3_test_control() on all builds, 
not just on test builds. (CVS 6263)

FossilOrigin-Name: e8f192e2a93350a136d86bd9caceff65f52f3513
 2009-02-05 16:31:45 +00:00
drh
dc86e2b2cd Fix some minor compiler warnings. Added sqlite3Isalpha() for use in 
the soundex() function. (CVS 6203)

FossilOrigin-Name: bfc71edca471221add6b32b867d0b15171974eaf
 2009-01-24 11:30:42 +00:00
danielk1977
78ca0e7eb4 When not compiling for an EBCDIC system, use built-in alternatives to the tolowe 
r(), toupper() and other ctype.h library functions. Ticket #3597. (CVS 6196)

FossilOrigin-Name: 1041abd6784d283bebf646c54e93599522f7889d
 2009-01-20 16:53:39 +00:00
drh
1875f7a3db The amalgamation now compiles cleanly on GCC with options 
-pedantic-errors -Wno-long-long. (CVS 5991)

FossilOrigin-Name: 73c7302c5f76a2f61ecd75f8bda69bb500d3119c
 2008-12-08 18:19:17 +00:00
danielk1977
0a732f59b0 Add support for the SQLITE_THREADSAFE=2 and SQLITE_DEFAULT_MEMSTATUS compilation options. (CVS 5676) 
FossilOrigin-Name: 85c2a58901338c1c4652c2cbee51e5f48d289191
 2008-09-04 17:17:38 +00:00
danielk1977
075c23af26 Begin adding support for the SQLITE_OMIT_WSD macro. Some (many) WSD variables still need wrappers added to them. (CVS 5652) 
FossilOrigin-Name: 573d92abb9adb1c321ebc2fcadcf14374213b093
 2008-09-01 18:34:20 +00:00
drh
777c5386c3 Move date+time functions to start-time initialization. Additional 
start-time function cleanup. (CVS 5585)

FossilOrigin-Name: 80d6a31cb3851704c09ac9d99fe4bc241df3c180
 2008-08-21 20:21:34 +00:00
drh
70a8ca3c1e Initialize the global built-in function table at start-time 
instead of at compile-time.  This is less prone to malfunction when
compile-time parameters very. (CVS 5583)

FossilOrigin-Name: ef6936e50adb9ebea39c890167403fff01bbb5ed
 2008-08-21 18:49:27 +00:00
drh
633e6d57d9 Implement the "lookaside" memory allocation cache. Use of this cache makes 
the speed1.test script run about 15% faster.  Added new interfaces to
control the cache. (CVS 5488)

FossilOrigin-Name: e48f9697e9fea339e150ddc32940760027dd07d9
 2008-07-28 19:34:53 +00:00
drh
0a687d123e Improved enforcement of the SQLITE_LIMIT_LENGTH limit. (CVS 5368) 
FossilOrigin-Name: ee93150878436ce6e992ea8a1d348fb58b03b5e2
 2008-07-08 14:52:07 +00:00
drh
fec00eabb3 Continuing progress on the new memory allocation subsystem. Added the 
sqlite3_mem_methods structure for defining new memory allocators at
run-time. (CVS 5219)

FossilOrigin-Name: f00305f4cd2f487f660f34a21c1c24a0b37c7275
 2008-06-14 16:56:21 +00:00
drh
40257ffd0a Progress toward implementation of sqlite3_config() and a rework of the 
mutex and memory allocation subsystems.  This is an incremental check-in. (CVS 5218)

FossilOrigin-Name: a03c5af115889f477e17187a198a7d2d40bc76bf
 2008-06-13 18:24:27 +00:00