75ab50ce8f
Use comments to mark several branches as optimizations. No changes to code.
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FossilOrigin-Name: 33e627472780b872716c504f2d585cc057c390a5
2016-04-28 14:15:12 +00:00
10c0a2a7c9
Remove an unnecessary conditional from the sqlite3DecOrHexToI64() routine.
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FossilOrigin-Name: fcf85bfe50b254e825ee63a4cd0aa0b333b06eed
2016-04-28 03:52:18 +00:00
609d5846ba
Change the sqlite3Atoi64() routine so that it returns failure if not all of
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the input characters are consumed, even if it consumed all characters up to
the first 0x00. This has no impact on external APIs as far as I can tell.
FossilOrigin-Name: 46d4ffff3bd33d7e901e76cfac1cbde38d4f61d0
2016-04-28 00:32:16 +00:00
ad975d539e
More simplification of the sqlite3AtoF() routine. Add special comments
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to indicate branches that are for optimization purposes only and that give
the correct answer even if always or never taken.
FossilOrigin-Name: 0065fe97cb8e5076acae1bf1560fd2f69dab9014
2016-04-27 15:24:13 +00:00
c6daa01c05
Remove still more unnecessary branches from sqlite3AtoF().
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FossilOrigin-Name: 3adfe9f3e6ce7cc09fcb570d9b65e830a96cac15
2016-04-27 02:35:03 +00:00
15af62acff
Further simplifications to sqlite3AtoF() to remove unneeded branches.
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FossilOrigin-Name: dd69e53cb077873171af5312c633ca185595bf31
2016-04-26 23:14:45 +00:00
e5f06fdc87
Remove an unnecessary line from the sqlite3AtoF() routine.
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FossilOrigin-Name: a9d007494cfe30a26dca5352655dc7702351476e
2016-04-26 21:02:53 +00:00
244b9d6ec6
Performance optimization to sqlite3Dequote() and its callers.
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FossilOrigin-Name: 9efe2265b1e70172778d333c5b9d9a76095427ab
2016-04-11 19:01:08 +00:00
40dc357a01
Remove an unnecessary branch in the sqlite3LogEstToInt() routine.
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FossilOrigin-Name: da81d7afeb0566a09a505ba5fce901e991e4a029
2016-04-05 23:39:53 +00:00
d7564865ad
The sqlite3_column_decltype() routine should return NULL, not an empty string,
...
if the column has no declared type.
FossilOrigin-Name: 605eba4a756e7185119088e2242f82691d078b01
2016-03-22 20:05:09 +00:00
80fbee092e
Improved comments. No logical changes to code.
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FossilOrigin-Name: a6b6c6c466f3feb257b4fc08ef6b9a27a68ca073
2016-03-21 11:57:13 +00:00
8d2f41ccd2
Do a better job of capturing all system errno values regardless of when
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they occur.
FossilOrigin-Name: 7d49998d571d841a6d1b55f5f9889e613daaab2a
2016-03-21 11:38:01 +00:00
1b9f2141a7
Experimental implementation of the sqlite3_system_errno() interface.
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FossilOrigin-Name: 6782c87b3722fbd09684a5b1e5df05247956f1c6
2016-03-17 16:01:23 +00:00
ecdf20d3a4
Use #ifdefs to remove code that is unreachable in some configurations, replacing
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it with an assert().
FossilOrigin-Name: f96ec84d605fd73c323344a753acf35b76307af9
2016-03-10 14:28:24 +00:00
14bfd99143
Fix an incorrect #ifdef on sqlite3LogEstToInt().
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FossilOrigin-Name: dca7b23354a6b08c926b6ed3f7345d942a409862
2016-03-05 14:00:09 +00:00
6f17c09fcf
Fix an assert() in sqlite3VarintLen(), even though it is impossible to hit
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in SQLite due to the way sqlite3VarintLen() is used.
FossilOrigin-Name: 251424c5869f43012fc1e1a545de362036b883db
2016-03-04 21:18:09 +00:00
94eaafa9ce
Reduce the amount of heap required to store many schemas by storing each
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column datatype appended to the column name, rather than as a separate
allocation.
FossilOrigin-Name: 842b21162713bb141b845b01c136457a31af4ab0
2016-02-29 15:53:11 +00:00
d566c95179
Change the "PRAGMA stats" command to report size values in LogEst units.
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The eliminates the need for sqlite3LogEstToInt() unless non-standard
compile-time options are used, so leave it out except in those cases.
FossilOrigin-Name: 832c237fcbe83dd4f5a18a06acb0aeb7e2b9e712
2016-02-25 21:19:03 +00:00
469753d949
Add an SQLITE_DISABLE_INTRINSIC #ifdef to the sqlite3Put4Byte() function.
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FossilOrigin-Name: ba9c6827d0890aaed9168c221fefbdbe89f4f9d3
2016-02-19 13:20:02 +00:00
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
575fad6500
Add the slightly faster sqlite3DbMallocRawNN(db,n) routine for the majority
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cases where db is guaranteed to be not NULL.
FossilOrigin-Name: 0a802e96ab06e2643834b83671fa8353da1a348d
2016-02-05 13:38:36 +00:00
40aced5c65
Add the sqlite3TokenInit() utility function.
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FossilOrigin-Name: 7323175337b7ba85ac932ca892b28860f6a5b688
2016-01-22 17:48:09 +00:00
62aaa6ca88
Fix over-length source code lines. No logic changes.
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FossilOrigin-Name: 198d191b2f5ef7d63ac0093c701955c9052fd734
2015-11-21 17:27:42 +00:00
59a5364cf9
Performance improvement in sqlite3VarintLen().
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FossilOrigin-Name: adf9fefb00ae1dbb07a921c6796cb0a9505c6d19
2015-09-01 22:29:07 +00:00
60e0807801
Add SQLITE_DISABLE_INTRINSIC define to disable use of intrinsic functions (e.g. for certain older compilers and/or platforms).
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FossilOrigin-Name: f0075d735a76ce326619b6ba7f0d556e492f1c41
2015-07-29 21:47:39 +00:00
f156c9b684
Enable use of the __builtin_bswap32() only with GCC 4.3 and higher.
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FossilOrigin-Name: 030f60a7ba171650ce8c0ac32dc166eab80aca32
2015-07-03 17:54:49 +00:00
647ca46fc5
Make use of the _byteswap_ushort() and _byteswap_ulong() compiler intrinsics for MSVC, when available.
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FossilOrigin-Name: fe144dd73f7097a17c24c7812c2a1cc40466e6da
2015-06-30 17:28:40 +00:00
329428e208
Remove the use of htonl() in the previous check-in due to linkage issues.
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Add the get2byteAligned() macro and use it for access to the cell offsets
on btree pages for about a 1% performance gain.
FossilOrigin-Name: 79ff36b7170c9e7e7a9935c8b9d1665867771087
2015-06-30 13:28:18 +00:00
5372e4d4f9
Make use of htonl() and <nowiki>__builtin_bswap32()</nowiki> for faster
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implementations of sqlite3Get4byte() and sqlite3Put4byte().
FossilOrigin-Name: bc27ebd7f73e9fc8e00da6ec82632e439fcce812
2015-06-30 12:47:09 +00:00
1116bf1359
Implement sqlite3Strlen30() using strlen() from the C library.
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FossilOrigin-Name: 8001aa52bd12f900092387fe3571463e89efd977
2015-06-30 03:18:33 +00:00
935f2e7074
Disregard leading zeros when converting strings to 32-bit integers.
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FossilOrigin-Name: 691cc201e135a01c4cc4057be7e5d99285ab392d
2015-04-18 04:45:00 +00:00
0ede9ebec7
Improvements to compile-time-option hygiene. Use "#if OPTION" instead of
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"#ifdef OPTION" in cases where that makes sense, so that -DOPTION=0 will work.
Add the "Have-Not" configuration in releasetest.tcl which disables all of
the "HAVE_component" compile-time options.
FossilOrigin-Name: 9e92a5ed5aaba20461ed4ce8359d6e34e7773d68
2015-01-10 16:49:23 +00:00
9ca95730e3
Add the SQLITE_ENABLE_API_ARMOR compile-time option. This is a work in
...
progress and is not yet completely functional.
FossilOrigin-Name: c297a84bc678f81ffc0aa9139ab73f0ca87c1971
2014-10-24 00:35:58 +00:00
60ec914c74
Fix typos in comments. No code changes.
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FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
2014-09-06 16:39:46 +00:00
2f2b2b8580
Performance enhancement in sqlite3PutVarint().
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FossilOrigin-Name: a929be551924144c9bc7aab608404d59e479abb5
2014-08-22 18:48:25 +00:00
13f40da31d
Split the sqlite3Error() routine into sqlite3Error() and
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sqlite3ErrorWithMsg(), for a slight size reduction and performance increase.
FossilOrigin-Name: cf561d1f0bb60b3d638632d20bd686dda4fa4a04
2014-08-22 18:00:11 +00:00
9296c18a50
Change the hex literal processing so that only the SQL parser understands
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hex literals. Casting and coercing string literals into numeric values does
not understand hexadecimal integers. This preserves backwards compatibility.
Also: Throw an error on any hex literal that is too big to fit into 64 bits.
FossilOrigin-Name: 6c6f0de59bf96b79c8ace8c9bfe48c7a6a306a50
2014-07-23 13:40:49 +00:00
fce4da1b73
Test cases for hex literals.
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FossilOrigin-Name: 19054339c47448bcdfd1f7be35daa3826c409077
2014-07-23 01:56:32 +00:00
28e048c618
Add support for parsing C-style hexadecimal literals.
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FossilOrigin-Name: 34a1f38b7a23c64f5c6e5b34c19a20480be53961
2014-07-23 01:26:51 +00:00
c007f61bb0
Repurpose the SQLITE_TESTCTRL_FAULT_INSTALL test-control to register a
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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
224155dd1c
Fix long-standing typos in comments.
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FossilOrigin-Name: b9f91317c34d07769a95dc2f905a6ccabceb64a3
2014-04-30 13:19:09 +00:00
53a6eb3f3c
Faster implementation for sqlite3MulInt64().
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FossilOrigin-Name: 010c48f671e909cb406f3716102a0032bc72a592
2014-02-10 12:59:15 +00:00
693e671936
Fixes for various clang warnings.
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FossilOrigin-Name: 87bf60637e5863c54c5e2d05aaaca0835b7aace8
2014-01-24 22:58:00 +00:00
a3cc007df4
Simplication and optimization of error message handling.
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FossilOrigin-Name: 9d347f547e7ba9590b0c68edf50a14ad94a2bb92
2013-12-13 16:23:55 +00:00
47676fedf6
Fix two potential (and apparently harmless) shift overflows discovered by
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the -fcatch-undefined-behavior option of clang.
FossilOrigin-Name: e19eead8c9977ed4f00eac54c5bc7e90db78caa8
2013-12-05 16:41:55 +00:00
a256c1a4b3
Fix typos in the header comment on the sqlite3Atoi64() routine.
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FossilOrigin-Name: c85e0c546ea6c6be46deea5c7a716b5fb553c7b4
2013-12-01 01:18:29 +00:00
de1a8b8c69
Change the REAL-to-INTEGER casting behavior so that if the REAL value
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is greater than 9223372036854775807.0 then it is cast to the latest
possible integer, 9223372036854775807. This is sensible and the way
most platforms work in hardware. The former behavior was that oversize
REALs would be cast to the smallest possible integer, -9223372036854775808,
which is the way Intel hardware works.
FossilOrigin-Name: 6f53fc7106658d44edf63068f9a8522fa5a7688b
2013-11-26 15:45:02 +00:00
bf539c4d5c
Begin an experimental refactoring to estimate the average number of bytes
...
in table and index rows and to use that information in query planner.
Begin by renaming WhereCost to LogEst and making that type and its
conversion routines available outside of where.c.
FossilOrigin-Name: 66c4a251d61582b47d5cbe50cbca160a9209bd06
2013-10-05 18:16:02 +00:00
9ccd8659ff
Change the PRAGMA parser to use a binary search for the pragma name.
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Also: Minor performance enhancement to sqlite3DbFree() and to the
token dequoter.
FossilOrigin-Name: 870c030b4e1854e6e0d39907fadbd82774c16f56
2013-09-13 16:36:46 +00:00
12886632c6
Adjustment to an extreme corner case in the sqlite3Atoi64() routine.
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FossilOrigin-Name: 39534b4baa53b9360696a9d5ee8cc2108af34592
2013-03-28 11:40:14 +00:00
drh