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13,388 Commits 1,573 Branches 184 Tags
592f0cb15e44e69577d1f72b4586093ca48ea7e6
Commit Graph

774 Commits

Author SHA1 Message Date
drh
466fd815fb Simplify the EXPLAIN output of virtual table P4 parameters to only show the 
pointer to the sqlite3_vtab object and omit the sqlite3_module object.

FossilOrigin-Name: 85610bbbc60cb4a6ec856123447fdb2ba948e52f
 2015-03-24 14:57:02 +00:00
drh
f496a7dc81 More defenses against virtual table being deleted out from under a running 
statement.

FossilOrigin-Name: 116c99823022c017946b6088878a2d46759deb6e
 2015-03-24 14:05:50 +00:00
drh
a68d628291 Prevent a virtual table from being destroyed while it is in use. 
FossilOrigin-Name: fba674c083286dabb37fed9357b67593b56ed3a5
 2015-03-24 13:32:53 +00:00
drh
086723a4a8 Replace the Vdbe.inVtabMethod field with the sqlite3.nVDestroy counter. 
FossilOrigin-Name: 9faefb96272967e731e83ef516a8c1e1b876391b
 2015-03-24 12:51:52 +00:00
drh
75a4d7c3da When deleting the master journal to commit a multi-database transaction, do 
not sync the directory if PRAGMA synchronous=OFF for all participating
database files.

FossilOrigin-Name: 018d7671402a0f8103d1306641655b69f9fa235d
 2015-03-16 16:44:55 +00:00
mistachkin
1b3ee49225 Fix harmless compiler warning seen with MSVC. 
FossilOrigin-Name: 78c2e62bb4c529595aaaf2e1f5f26387ad977b1b
 2015-01-21 00:51:08 +00:00
drh
1af3c64d03 Fix the assert() of the previous check-in so that it works even when 
compiled without SQLITE_DEBUG.

FossilOrigin-Name: 38868f845e1ad4d61354ab1ad39dd19e3e07c7fd
 2015-01-19 20:57:19 +00:00
drh
e1bb802c54 An alternative way of implementing the assert() that verifies the relative 
values of KeyInfo.nField+KeyInfo.nXField and the number of columns in a record.
This version of the assert() only fires when the high-speed comparison
routines are used - which is to say it only fires when the constraint
actually matters.

FossilOrigin-Name: bf744b4908b096f301565f6a4ea8d56667c1d76a
 2015-01-19 19:48:52 +00:00
dan
0466883300 Experimental opimizations to speed up FK constraint CASCADE and SET NULL action processing. 
FossilOrigin-Name: 35a20a5f22245c70faa51965951e8cc011defa93
 2014-12-16 20:13:30 +00:00
drh
9b5444af6c Work around overzealous NULL pointer checking in memcpy() and memset() for 
some systems.

FossilOrigin-Name: 0d04f380e1bd17104b3cf76b64d0cfc79a726606
 2014-12-02 13:46:53 +00:00
drh
1b40e63f9b Fix the encoding of some integers to use the minimum amount of space: 
-128, -32768, -8388608, -217483648, and -140737488355328.

FossilOrigin-Name: 2d7c8da5f16e64eaa7b0c2d66898682ea3d102a0
 2014-11-20 02:58:10 +00:00
drh
654858d7f4 Add some requirements marks to the record formatting logic. Comment changes 
only - the code is unaltered.

FossilOrigin-Name: 9a9627e178a67bbfc85366aaea900e674d22fb53
 2014-11-20 02:18:14 +00:00
drh
518140ed04 Change the SQLITE_SCANSTAT_EST parameter so that it returns a double for 
the estimated number of output rows per loop, rather than a 64-bit integer.
Revise the output format for the ".scanstats on" in the shell to make use
of this new capability.

FossilOrigin-Name: f9684000665ae7ef6f89c3773612b8286b8f545a
 2014-11-06 03:55:10 +00:00
dan
e2f771b047 Add further tests. Fixes so that compilation without ENABLE_STMT_SCANSTATUS works. 
FossilOrigin-Name: a2303c719222f1effb51acc6b37930561148c00c
 2014-11-03 15:33:17 +00:00
dan
037b5324bd Remove unused variable from struct WhereInfo. Add some explanatory comments to new code. 
FossilOrigin-Name: f5313e0c680d9baebefb1cf50ddadedd4418a334
 2014-11-03 11:25:32 +00:00
dan
43764a8efb Minor performance enhancements to SQLITE_ENABLE_STMT_SCANSTATUS code. 
FossilOrigin-Name: f13d6ba8a72d75838c4aaf85326c1129da027f8b
 2014-11-01 21:00:04 +00:00
dan
6f9702ed4d If SQLITE_ENABLE_STMT_SCANSTATUS is defined, record the number of times each VDBE opcode is executed. Derive the values returned by sqlite3_stmt_scanstatus() from these records on demand. 
FossilOrigin-Name: 9ea37422a8cc2fce51bb10508e5e90f40fd4b511
 2014-11-01 20:38:06 +00:00
dan
04489b6dce Add the experimental sqlite3_stmt_scanstatus() API. 
FossilOrigin-Name: 6a9bab34aeb6a01b612211a28c140de60a3e883c
 2014-10-31 20:11:32 +00:00
dan
c3da667b25 Modify the documentation for sqlite3_changes() to make it more testable. Add tests and minor fixes for the same. 
FossilOrigin-Name: 41cdd0c422d61533a94870cb5ad094682956d472
 2014-10-28 18:24:16 +00:00
drh
f526dcad29 Three small optimizations to vdbeaux.c. 
FossilOrigin-Name: 04892f8ba6c55cec4fe37bfe59b6349fd2a40698
 2014-10-13 17:42:05 +00:00
drh
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
drh
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
drh
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
drh
39c4b82b5a Fix the header comment in sqlite3VdbeDeletePriorOpcode(). No changes to 
code.

FossilOrigin-Name: 7fb1626866c2f8dad84c7e6184824be3efd71ca2
 2014-09-29 15:42:01 +00:00
drh
069c23c947 Small size reduction and performance increase for releaseMemArray(). 
FossilOrigin-Name: 24cd32d681df58f687b2afbe4b13d579e3efdd4b
 2014-09-19 16:13:12 +00:00
drh
7abda85607 Updates to comments. No code changes. 
FossilOrigin-Name: 9b42c3da6b2593a10b8fe4b2fcc3d650132625c1
 2014-09-19 16:02:06 +00:00
drh
322f2852f2 Add the sqlite3VdbeMemClearAndResize() interface to be used in place of 
sqlite3VdbeMemGrow().

FossilOrigin-Name: 5b9b8987797abf7c68d2c3154f6657be9b8b1c8f
 2014-09-19 00:43:39 +00:00
drh
17bcb10299 Add the Mem.szMalloc element to the Mem object and use it to keep track of 
the size of the Mem.zMalloc allocation.

FossilOrigin-Name: 9c09ac353df6041808cace41880f4729ee73f5e1
 2014-09-18 21:25:33 +00:00
drh
74eaba4de2 Merge the Mem.r value into the MemValue union as Mem.u.r. Hence, a Mem can 
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
drh
d3b74200a8 In the Mem object, stop requiring that Mem.xDel be NULL when the MEM_Dyn 
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
drh
8740a60016 Make sure registers are cleared properly prior to being used to store 
the result of an OP_Column operator.

FossilOrigin-Name: 78fb8838d80b229418c347c63579989432e1af7d
 2014-09-16 20:05:21 +00:00
drh
897a2d50f2 Remove an unused parameter from sqlite3VdbeIdxRowid(). This is cosmetic 
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
drh
75179ded97 Reduce the number of arguments to RecordCompare functions from 4 to 3, 
resulting in a small performance increase.

FossilOrigin-Name: 8239c35aedd583af79505378bb7dbb78346a3f45
 2014-09-16 14:37:35 +00:00
drh
035e563bf6 Reorder the elements of the Mem object for a small size reduction and 
performance improvement.

FossilOrigin-Name: 0be3019ed794c10de67dfd645ceea7d45815bc4b
 2014-09-16 14:16:31 +00:00
drh
7f4b19f170 Changes to sqlite3VdbeRecordUnpack() to make it slightly smaller and faster. 
FossilOrigin-Name: 8fb90da77ce0e662c1ef1ae0d854e5164494b7af
 2014-09-16 13:30:05 +00:00
drh
982ff72f0f Performance improvement to the sqlite3MemCompare() routine by factoring out 
sqlite3BlobCompare().

FossilOrigin-Name: 20ed2321b09ba076e50f9fc2f42c135b25746d72
 2014-09-16 03:24:43 +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
4d015c6902 Merge the recent performance enhancements implemented on trunk into the 
threads branch.

FossilOrigin-Name: dfdc900f5d1a31ee5c5f35a630c4a8253e69093b
 2014-08-25 13:27:02 +00:00
drh
6848dad894 Another performance tweak: Split the sqlite3BtreeCursorHasMoved() routine 
into two with the second routine named sqlite3BtreeCursorRestore().  The first
now only reports whether or not the cursor has moved and the second tries to
restore the cursor.  This allows the sqlite3VdbeCursorMoveto() routine to be
refactored to avoid stack pointer movements, for a noticable performance gain.

FossilOrigin-Name: ce123b5c592556a8cd38b01fcc91ba76231d3098
 2014-08-22 23:33:03 +00:00
drh
13f40da31d Split the sqlite3Error() routine into sqlite3Error() and 
sqlite3ErrorWithMsg(), for a slight size reduction and performance increase.

FossilOrigin-Name: cf561d1f0bb60b3d638632d20bd686dda4fa4a04
 2014-08-22 18:00:11 +00:00
drh
8932becbef Handle the 4-byte integer case in the stackless routine. 
FossilOrigin-Name: 3f55484e81000c75e231f5580632a68e782ded4f
 2014-08-22 14:56:13 +00:00
drh
14a924a5cd Get the sqlite3VdbeSerialGet() routine to run faster by avoiding the use 
of local variables.

FossilOrigin-Name: 8267d82174099e548a4f78d06af0c6324c89b83d
 2014-08-22 14:34:05 +00:00
drh
3f5b199eb5 Change a while-loop into a do-loop in sqlite3VdbeSerialPut() for a small 
size reduction and performance improvement.

FossilOrigin-Name: 750bb0a0960606ab24037e0992e9f7a17524cc3e
 2014-08-22 13:22:32 +00:00
drh
83b25d32d7 Merge the pre-3.8.6 changes into the threads branch. 
FossilOrigin-Name: a608fd1d52606a009c3acc7f1d184b86a7df3c82
 2014-08-14 14:02:48 +00:00
drh
81e069eee5 Improve the comments associated with SQLITE_TEST_REALLOC_STRESS and add 
an extra assert() to prove an assumption.

FossilOrigin-Name: 35c454616321d480ecbc4efdf6869bbcdf0d3aa2
 2014-08-12 14:29:20 +00:00
dan
76ccd89d13 If SQLITE_TEST_REALLOC_STRESS is defined, extend the op-code array used by virtual-machine programs by one element at a time, instead of doubling its size with each realloc(). 
FossilOrigin-Name: 4c291827224b84487a38e7ccba2edabc0f15b5ba
 2014-08-12 13:38:52 +00:00
drh
3c19bbea0a The SQLITE_IOERR_BLOCKED extended error code is not longer used, so remove 
assert() statements and documentation for that error code.  Also make other
documentation improvements.

FossilOrigin-Name: 36b7c5cefcad6bad044806092593c84876fee8bc
 2014-08-08 15:38:11 +00:00
drh
966d9f267f Merge recent trunk changes into the threads branch. 
FossilOrigin-Name: 163c247bd8280ab14fe577329c631c8bd884707f
 2014-07-28 15:01:37 +00:00
drh
eac5bd7870 Try to fix harmless compiler warnings reported by Fortify. 
FossilOrigin-Name: e0fa6fdc14ac5458f9200cbae124f8025ea534ea
 2014-07-25 21:35:39 +00:00
drh
2bd2c29a95 Merge all recent trunk changes into the threads branch. 
FossilOrigin-Name: 770685892c8f09b9cddb2fbb2877cfb291e19425
 2014-07-24 16:54:28 +00:00