c22284f4b3
Reduce the CPU load imposed by sqlit3VdbeCursorMoveto() by factoring out
...
some of its functions and by avoiding unnecessary calls.
FossilOrigin-Name: c2799aece17d347c64217a0e407bb10e50c184a3
2014-10-13 16:02:20 +00:00
b53a5a9e50
Remove the VdbeCursor.lastRowid cache of the current rowid, since maintaining
...
the correct cache value uses more CPU cycles than just recomputing the rowid
on the occasions when it is actually needed. Replace it with the
VdbeCursor.aOffset field which used to be computed from VdbeCursor.aType
when needed. Saves 100 bytes of code space and runs 0.2% faster.
FossilOrigin-Name: 91384a7d727ef0f285cd430e829ba9f3852db50e
2014-10-12 22:37:22 +00:00
4fa4a54f7e
Remove the SQLITE_ENABLE_TREE_EXPLAIN compile-time option. Add alternative
...
debugging display routines: sqlite3TreeViewExpr(), sqlite3TreeViewExprList(),
and sqlite3TreeViewSelect().
FossilOrigin-Name: 4ff51325d6b41d0c59e303b573700ec80c51d216
2014-09-30 12:33:33 +00:00
a15cc47f81
Simplifications to the SQL function and aggregate calling procedures.
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FossilOrigin-Name: 3467049a1705b49905ea88a5c6becb6fe318f2fa
2014-09-25 13:17:30 +00:00
322f2852f2
Add the sqlite3VdbeMemClearAndResize() interface to be used in place of
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sqlite3VdbeMemGrow().
FossilOrigin-Name: 5b9b8987797abf7c68d2c3154f6657be9b8b1c8f
2014-09-19 00:43:39 +00:00
17bcb10299
Add the Mem.szMalloc element to the Mem object and use it to keep track of
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the size of the Mem.zMalloc allocation.
FossilOrigin-Name: 9c09ac353df6041808cace41880f4729ee73f5e1
2014-09-18 21:25:33 +00:00
26c79a060b
Correct typos in comments. No changes to code.
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FossilOrigin-Name: 55879932116d373c95a5f32ec44b53a9c3f4db24
2014-09-18 18:55:47 +00:00
74eaba4de2
Merge the Mem.r value into the MemValue union as Mem.u.r. Hence, a Mem can
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now store an integer or a real but not both at the same time. Strings are
still stored in a separate element Mem.z, for now.
FossilOrigin-Name: 4c8c89d7e62aecfe2eb735f7bb114aed6b452847
2014-09-18 17:52:15 +00:00
d3b74200a8
In the Mem object, stop requiring that Mem.xDel be NULL when the MEM_Dyn
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bit is clear. Also reduce the amount of initialization of Mem objects.
All for a small size reduction and performance increase.
FossilOrigin-Name: fdddb477c89dabb9f7bf2d5ccb32534868df3a03
2014-09-17 16:41:15 +00:00
0725cabe3a
Improved interface to the Mem object handling. Small size reduction and
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performance increase.
FossilOrigin-Name: 4e437844322cc20eef92928b53fa6b37eded586e
2014-09-17 14:52:46 +00:00
897a2d50f2
Remove an unused parameter from sqlite3VdbeIdxRowid(). This is cosmetic
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only as the C-compiler optimizers were already omitting this parameter on
amalgamation builds.
FossilOrigin-Name: a10a6bba4963761b490b7243b388dcc920c4cfed
2014-09-16 14:55:08 +00:00
035e563bf6
Reorder the elements of the Mem object for a small size reduction and
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performance improvement.
FossilOrigin-Name: 0be3019ed794c10de67dfd645ceea7d45815bc4b
2014-09-16 14:16:31 +00:00
60ec914c74
Fix typos in comments. No code changes.
...
FossilOrigin-Name: e62aab5e9290503869e1f4d5e0fefd2b4dee0a69
2014-09-06 16:39:46 +00:00
503ae86508
Merge recent performance enhancements from trunk onto the threads branch.
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FossilOrigin-Name: 35c44a3c73e2e8b14ff194c41986f4bdb9dfe737
2014-08-29 14:40:07 +00:00
9bd038f12e
In the sqlite3_context object, keep a pointer to the result value rather
...
than storing the result value in the sqlite3_context object and using
memcpy() to move the value back into its register
after the function returns. This runs faster and saves over 500 bytes
of code space.
FossilOrigin-Name: 6c1ee3e388eb110de815270467b1e50592c0ba6c
2014-08-27 14:14:06 +00:00
6c4ec84256
Merge the CAST operator enhancements from trunk.
...
FossilOrigin-Name: 6c8f86e4e08d5d57e21496277613e0f9dcc06514
2014-08-25 22:43:17 +00:00
4169e430a2
Allow CAST expressions and unary "+" operators to be used in the DEFAULT
...
argument of an ALTER TABLE ADD COLUMN and to be understand on the RHS of
range constraints interpreted by STAT3/4. This involves a rewrite of the
implementation of the CAST operator.
FossilOrigin-Name: 91d8a8d0b792ea5c4fe68fd9caaf3345eddea486
2014-08-25 20:11:52 +00:00
4d015c6902
Merge the recent performance enhancements implemented on trunk into the
...
threads branch.
FossilOrigin-Name: dfdc900f5d1a31ee5c5f35a630c4a8253e69093b
2014-08-25 13:27:02 +00:00
12b7c7d8c3
Change the name of the VdbeMemRelease() macro to VdbeMemReleaseExtern() to
...
more accurately reflect what it does. Performance enhancement to the
sqlite3VdbeMemRelease() function.
FossilOrigin-Name: 3ca5846da7da5e08192a4c96288197be3b7ab6f7
2014-08-25 11:20:27 +00:00
bd9507c8da
Performance optimization in the applyAffinity() logic inside the VDBE.
...
FossilOrigin-Name: 25f2246be404f38b4f8dd70397cd1454d46358c4
2014-08-23 17:21:37 +00:00
966d9f267f
Merge recent trunk changes into the threads branch.
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FossilOrigin-Name: 163c247bd8280ab14fe577329c631c8bd884707f
2014-07-28 15:01:37 +00:00
8af3f772c1
Add constraints (enforced only when SQLITE_DEBUG is enabled) on the use of
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OP_Next and OP_Prev.
FossilOrigin-Name: 2230c74f1efa591770176c9b40e920724a3c39e1
2014-07-25 18:01:06 +00:00
2bd2c29a95
Merge all recent trunk changes into the threads branch.
...
FossilOrigin-Name: 770685892c8f09b9cddb2fbb2877cfb291e19425
2014-07-24 16:54:28 +00:00
3526319b48
Add the OP_ReopenIdx opcode that works like OP_OpenRead except that it becomes
...
a no-op if the cursor is already open on the same index. Update the
OR-optimization logic to make use of OP_ReopenIdx in order to avoid
unnecessary cursor open requests sent to the B-Tree layer.
FossilOrigin-Name: 77f412caf0192d3e7fecb377d6d72123d8b64424
2014-07-22 20:02:19 +00:00
6614181610
Merge the latest trunk changes into the threads branch.
...
FossilOrigin-Name: ae23a65eb1547fbe8b86ab71477071990a22d31d
2014-06-30 20:25:03 +00:00
3eddb23e31
Change the VDBE to export the sqlite3MemCompare() routine and thus free
...
where.c from the dependency on vdbeInt.h.
FossilOrigin-Name: d186d1ac3c47f0d814636c4b8386a6065a294750
2014-06-28 14:28:06 +00:00
958d261bb8
Fix harmless compiler warnings.
...
FossilOrigin-Name: f8f72ecb9052a4cace1db75879fb8b5131ea4f50
2014-04-18 13:40:07 +00:00
fad9f9a8a6
When sorting data for a CREATE INDEX statement in single-threaded mode, assume that keys are delivered to the sorter in primary key order. Also fix various comments that had fallen out of date.
...
FossilOrigin-Name: 821d1ac4504243fa13b9e3c0d56361ad9fb80d78
2014-04-01 18:41:51 +00:00
a1f7c0a21c
Enhance the sqlite3VdbeRecordCompare() routines so that if they encounter
...
database corruption, they will set the UnpackedRecord.isCorrupt field and
return 0. The sqlite3BtreeMovetoUnpacked() routine detects this and returns
SQLITE_CORRUPT, causing the corruption to be reported back to the top-level.
FossilOrigin-Name: 7fa85eaaaf6d211378620d728a759fdfe30a15b0
2014-03-28 03:12:48 +00:00
65ea12cb4a
Make it possible for block-sort to use the OP_SorterOpen sorter in addition
...
to a generic OP_OpenEphemeral.
FossilOrigin-Name: 7ce2daafd39a117041bfdd0a7132e2764fe7a74b
2014-03-19 17:41:36 +00:00
079a307259
First attempt at getting block-sort to work. This is an incremental check-in.
...
There are many problems still to be worked out.
FossilOrigin-Name: 59742dd4c5259883850044d0938248b009ebd045
2014-03-19 14:10:55 +00:00
afc14f72ef
Experimental simplification of memory flags/type handling.
...
FossilOrigin-Name: bac2820e13a79d91d0f8938c643134a9d6900327
2014-03-05 01:29:18 +00:00
295aedf097
Fix compiler warnings.
...
FossilOrigin-Name: ba8993727e5752cbc92c7d78437e9e0510c899f7
2014-03-03 18:25:24 +00:00
c91b2fd310
Change the MEM_Dyn flag so that it means that Mem.xDel exists and must be
...
used to free the string or blob. Add tighter invariant checks on Mem.
FossilOrigin-Name: 44e1c33767cae3bf2cbd2238831fe67197009b43
2014-03-01 18:13:23 +00:00
75fd054201
Factor the Mem invariant checker into a separate procedure (rather than a
...
macro) so that it can be more easily extended.
FossilOrigin-Name: 354699d50e7d251504a7b3d6fbec9e5bcf99557f
2014-03-01 16:24:44 +00:00
defbd9dade
Add extra assert() statements trying to catch a Mem object in an inconsistent
...
state.
FossilOrigin-Name: 4aeb3ae435c78070232fef21a147fde4e1c5cd31
2014-03-01 14:45:18 +00:00
1b27b8c0a0
Faster and smaller implementation of sqlite3_value_type().
...
FossilOrigin-Name: 5708bc24b8cab623b833121183042b43e5a7021b
2014-02-10 03:21:57 +00:00
5f61229504
Do away with the "multi-register pseudo-table" abstration. Instead, just
...
use an OP_SCopy to load results directory from the result registers of
the co-routine.
FossilOrigin-Name: 1e64dd782a126f48d78c43a664844a41d0e6334e
2014-02-08 23:20:32 +00:00
ed71a839fd
Change the OP_InitCoroutine instruction to jump over the co-routine
...
implementation.
FossilOrigin-Name: a522f364a6b8ca6f69c353b30609a2166f6e94cf
2014-02-07 19:18:10 +00:00
a5750cfe01
Add the OP_Undef and OP_IsUndef opcodes. With these, use the first register
...
in the result register range as the flag to indicate EOF on an INSERT from
a SELECT, rather than allocating a separate boolean register for that task.
FossilOrigin-Name: 6fb7448550f28a3c93053e125faeaf11de1011d0
2014-02-07 13:20:31 +00:00
73d5b8f550
Move elements of the Vdbe object that are only used during statement
...
preparation out into the Parse object.
FossilOrigin-Name: c289a253c0c053ac8fc344efe138262c327d8096
2013-12-23 19:09:07 +00:00
9ac7962ace
Show changes to the column cache when PRAGMA vdbe_addoptrace=ON is set.
...
FossilOrigin-Name: 4c6a659c432e4f7c0285f58675a67f967b07bb0d
2013-12-18 15:11:47 +00:00
a9ab481fca
Fix harmless compiler warnings.
...
FossilOrigin-Name: a7e5fcd66659750eb2f4675082df324e7cf35427
2013-12-11 11:00:44 +00:00
024045fe6e
Avoid unnecessary calls to sqlite3VdbeSerialType() from within
...
sqlite3VdbeSerialPut().
FossilOrigin-Name: 079c04a5013074b68f7d90f1ce8bf8e7092ad8a2
2013-12-10 21:38:08 +00:00
038b7bc4ef
Simplifications to the OP_MakeRecord opcode and the sqlite3VdbeSerialPut()
...
helper function.
FossilOrigin-Name: 7277a769694787e0332d1a4efc02041834661e2a
2013-12-09 23:17:22 +00:00
501932ca68
Changes some offset and amount parameters from "int" to "u32" to avoid
...
harmless signed/unsigned comparison warnings.
FossilOrigin-Name: 4e8c5d0795cb7c603182bfa70f3855d654f0997e
2013-11-21 21:59:53 +00:00
5cc1023e1c
Reduce the size of VdbeCursor again, this time without a performance hit.
...
FossilOrigin-Name: 933939932c44bccb0958f203a5bd24e683c1cf38
2013-11-21 01:04:02 +00:00
1fd522ff49
Unpack some fields, adding some space back to the VdbeCursor object,
...
in order to help the code to run a little faster.
FossilOrigin-Name: f8d5efcd7b92492b833b6cd1cb6bec006c6a0809
2013-11-21 00:10:35 +00:00
14da87f8c5
Reduce the size of the VdbeCursor object from 144 to 120 bytes.
...
FossilOrigin-Name: 5f9d50688508affd0bc8e4d52e21dacfacdbb5ce
2013-11-20 21:51:33 +00:00
399af1d2c2
Refactoring the OP_Column opcode for improved performance and
...
maintainability.
FossilOrigin-Name: 7c914e3997d2b28164a2fa7eb4398262b6ddb4b2
2013-11-20 17:25:55 +00:00
drh