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27,211 Commits 1,607 Branches 185 Tags
8dd4697e48c04a405c9c8da4a68b948e45b1f159
Commit Graph

477 Commits

Author SHA1 Message Date
drh
f09ac0b336 Slightly faster function dispatch in the virtual machine by avoiding 
unnecessary reinitialization of variables that are already correctly
initialized.

FossilOrigin-Name: edd4e6876cc08ab907bb21f075380de946562d4c56a04923760848b4b11536ac
 2018-01-23 03:44:06 +00:00
drh
ce2fbd1b02 Add the experimental sqlite3_value_nochange() interface usable by xUpdate 
methods of virtual tables to see if a column has actually changed values.

FossilOrigin-Name: 8b7be15ece9e2e83959bb0e21e240106fe1077431242c3cc6b81f1baa2382f40
 2018-01-12 21:00:14 +00:00
drh
6f390beb7f Add the sqlite3_vtab_nochange() method which virtual table implementations 
can use to optimize UPDATEs.

FossilOrigin-Name: d444b1ff39f0a1673a977b8047e1e14a49d461c9934be080d27c2392a830c1c0
 2018-01-11 17:04:26 +00:00
drh
526740b1b9 Make sure the sqlite3_result_pointer() interface does not leave a VM register 
in an inconsistent state.  Fix for ticket [7486aa54b968e9b5].  Test cases
are in TH3.

FossilOrigin-Name: d2f9230c5c7ad6166e7d2b649f77960fa58b1cb583e529a43882753ab348413c
 2017-08-24 13:55:46 +00:00
drh
a485ad191f In the KeyInfo object, refactor the nField and nXField elements into 
nKeyField and nAllField, which are more useful and run a little faster.

FossilOrigin-Name: aea5990eab5e85f92df966aa641db2271c81052010ad2d80982475c4275a1284
 2017-08-02 22:43:14 +00:00
drh
754ee285fa Avoid redundant calls to sqlite3ApiExit() in sqlite3_step(). 
FossilOrigin-Name: 527974d4caba8bce7c89a28ea04a573b14c558657c14d9ad3c64bf1e0884caf8
 2017-08-02 19:04:37 +00:00
drh
59533aa5e0 Only attempt to invoke WAL callbacks when a transaction has committed. 
FossilOrigin-Name: bcc6dacb9114df709ef1bde24264c2193d9e39fc7fab024d5ebfc6056033274c
 2017-08-02 18:28:26 +00:00
drh
34fcf36d62 In sqlite3_bind_pointer(), invoke the destructor if the bind index is 
out of range, like sqlite3_bind_blob() does.

FossilOrigin-Name: d6684d2a744e6e04b8796c3b5ecb81c6577728b698c1ab5f4a828b2ac114b8a2
 2017-07-27 16:42:36 +00:00
drh
a0024e6c99 Improved implementation of the destructor on pointer-passing interfaces. 
FossilOrigin-Name: 601ad6795927fff8c3cc1711a2fd90912499573e94aa5bc8f18cbd4b89778f58
 2017-07-27 15:53:24 +00:00
drh
22930062d5 Add a destructor argument to sqlite3_bind_pointer() 
and sqlite3_result_pointer().

FossilOrigin-Name: 3d9e841f6011480ebb8a6d860da72af7fa545983e08835ddef2cac96e5f5cd4b
 2017-07-27 03:48:02 +00:00
drh
06d4940a48 Interchange to branches within an "if" statement in sqlite3_value_pointer() 
in order to work around a bug in gcc.

FossilOrigin-Name: 8a606e4abab4efa03f2e5ffc33d7c5faa3c663f339da87b4ce9f3feed5dc7194
 2017-07-17 17:46:29 +00:00
drh
9a541c0361 Improve the sqlite3_result_pointer() interface so that it cannot be faked 
using sqlite3_result_null() and sqlite3_result_subtype().

FossilOrigin-Name: c13264d5ef0470fb24e09f7bc12f19be3b77eab06d41f55607b38dddb532a132
 2017-07-17 11:39:46 +00:00
drh
ae3ec3f920 Add an experimental "pointer type" parameter to sqlite3_bind_pointer(), 
sqlite3_result_pointer(), and sqlite3_value_pointer().  The pointer type is
a string that must compare equal using strcmp() or else the pointer comes
through as a NULL.

FossilOrigin-Name: 211cce04e97d2e325a6ea3e99738fc71115d673dc13daeffb03ac3140deb11de
 2017-07-17 00:40:19 +00:00
drh
3a96a5d919 Add APIs for binding pointers that can be used by app-defined functions. 
FossilOrigin-Name: d9f4a831ba957ead3890b36d0e33e30cfa4c79b7de6400e623b9746a0a5a02d0
 2017-06-30 23:09:03 +00:00
drh
2c2f392dca Add interfaces sqlite3_prepare_v3() and sqlite3_prepare16_v3() with the 
extra prepFlags argument.  Add the SQLITE_PREPARE_PERSISTENT option as one
bit in that argument.

FossilOrigin-Name: 4a25c5883380fe5990d8180adb58c3bdc7a3d081bc4c69cd4de3cd57074fb251
 2017-06-01 00:54:35 +00:00
drh
3528f6b62b Add the SQLITE_STMTSTATUS_MEMUSED option for sqlite3_stmt_status() that reports 
the amount of heap memory used for a single prepared statement.

FossilOrigin-Name: b57d510465458dec5b5fc778fd6e8833392964201f9febebf526e60a543da0c2
 2017-05-31 16:21:54 +00:00
drh
e70d01f143 More efficient error handling and reset in the binding mechanism. 
FossilOrigin-Name: 9a3e3b34ba6eafce2f560c13225a3673e18d696b29295b59d958e938fa593baf
 2017-05-29 22:44:18 +00:00
drh
f7fa4e71f4 Negative N values in sqlite3_get_auxdata() and sqlite3_set_auxdata() can be 
used to access an auxiliary data cache over all functions in a single prepared 
statement.

FossilOrigin-Name: ff5306752e83e760255a10f20168c0f090929a4fee2a5f720dfab36f0ee72fae
 2017-05-11 15:20:18 +00:00
drh
e694139788 Rename fields of the internal AuxData object to make them unique and easier 
to search for.

FossilOrigin-Name: 2be9850cef6492e168243807c34af72119ffbe414027a12c4eda6c421b5b950d
 2017-05-10 19:42:52 +00:00
drh
2996796dcf If a reprepare is needed after binding to a variable with a number larger 
than 32, set only the high-order bit of the Vdbe.expmask rather than setting
all bits.  This could potentially result in fewer false-positive reprepares.

FossilOrigin-Name: 45797feefe90cb7da53256b0c42fdaa1221d0a27
 2017-03-03 21:51:40 +00:00
dan
bda4cb876c Save a few bytes and a few cycles by setting Vdbe.expmask to zero for 
statements prepared using legacy interface sqlite3_prepare().

FossilOrigin-Name: a8fd705258643863493476f8b42ee981608a339f
 2017-02-23 16:30:16 +00:00
dan
cb9a364390 Experimental change to invoke the preupdate hook when WITHOUT ROWID tables are 
written.

FossilOrigin-Name: 856f8604c59c8fdd9bfb7d86fc0e212f091ab49a
 2017-01-30 19:44:53 +00:00
dan
7271d7a19c Fix another pre-update hook issue, this time in sqlite3preupdate_old(). 
FossilOrigin-Name: c7651d21bfdfd9b8cf04b26e0264bc58c03d247f
 2017-01-25 18:53:27 +00:00
dan
2a86c1962c Fix a problem with the pre-update hook on this branch. 
FossilOrigin-Name: 6fc4fbfa29cfa795edf32e4a1f2d0eceb3007f68
 2017-01-25 17:44:13 +00:00
drh
9bf755cc44 Use the VList object to replace Parse.azVar for tracking the mapping between 
SQL parameter names and parameter numbers.  There is a performance
improvement, though there are still a few hiccups in the current code.

FossilOrigin-Name: 68ecafa1425a41358c88f41efea3262f1b4490f2
 2016-12-23 03:59:31 +00:00
drh
a582b01698 Simplifications to the way UnpackedRecord objects are allocated. Smaller 
and faster code that also fixes a subtle (currently unreachable) bug.

FossilOrigin-Name: f7ab01f254cd9d7006b8dec29adb234a671b8e6f
 2016-12-21 19:45:54 +00:00
drh
cb3cabd01b Refactor the sqlite3BtreeKey() and sqlite3BtreeData() internal interfaces 
into sqlite3BtreePayload() and sqlite3BtreePayloadChecked(), respectively.
This is a continuation of the optimization started by check-in
[2d831074cf].  The result is a slightly smaller and faster binary.

FossilOrigin-Name: 49ebc219faea30eaa61def4a3fba2817b9c58a86
 2016-11-25 19:18:28 +00:00
dan
e43635aaa7 In the sessions module, avoid recording a change if an UPDATE statement 
overwrites a column with REAL affinity containing an integer value with the same value.

FossilOrigin-Name: b861328ab9ceec6926d97658c3606e6ae9ad39bf
 2016-10-21 21:21:45 +00:00
drh
76336d5b9d Avoid accessing Vdbe.pc if it is uninitialized. Check Vdbe.magic first. 
FossilOrigin-Name: 6ac6e4462a08cb2f3d28e4a23218fc1b110a2148
 2016-10-01 11:39:53 +00:00
drh
28f17017ee Fix a potential null-pointer dereference and crash in the case where one 
thread is calling sqlite3_column_text() and another thread is calling
sqlite3_step() on the same prepared statement at the same instant.

FossilOrigin-Name: ee1382a36303eff8d94275ac3b12e5ce398ee620
 2016-09-22 21:37:18 +00:00
drh
ff535a2499 Further performance enhancements in zeroblob() handling. 
FossilOrigin-Name: 21b0e3b75c531a5ce33a1503f9bf647d56f56a5b
 2016-09-20 01:46:15 +00:00
drh
69c338263a Rename the Db.zName field to Db.zDbSName to make it more descriptive and to 
distinguish it from all of the other "zName" variables scattered throughout
the code.

FossilOrigin-Name: 92a22f01343a898455fd61c3b8e7d7c954f5b569
 2016-08-18 14:33:11 +00:00
drh
557341e8fa Add requirements marks to the sqlite3_trace_v2() interface documentation. 
FossilOrigin-Name: ebd388e94da4a2b29c2a546f832d359619803ec5
 2016-07-23 02:07:26 +00:00
drh
fca760c841 Add the sqlite3_expanded_sql() interface. Refinements to the 
sqlite3_trace_v2() interface to make it more useful.

FossilOrigin-Name: 99ee7ee58d45b29a0000492306ddc0b90563ff51
 2016-07-14 01:09:08 +00:00
drh
3d2a529df6 First cut at implementing the new sqlite3_trace_v2() interface. 
FossilOrigin-Name: cb0062feb018f52689938a58cb76886d431c33f0
 2016-07-13 22:55:01 +00:00
drh
a7c90c42ea Change the sqlite3BtreeKeySize() interface into sqlite3BtreeIntegerKey() and 
make it only work for table btrees.  Change sqlite3BtreeDataSize() into
sqlite3BtreePayloadSize() and make it work for all btrees.  Combine
sqlite3BtreeDataFetch() and sqlite3BtreeKeyFetch() into a single
sqlite3BtreePayloadFetch() routine.  These changes seem to make the
b-tree interface more rational and they reduce both binary size and
CPU usage.

FossilOrigin-Name: bef35e18dd19732f7859287b097feeb593e5900f
 2016-06-04 20:37:10 +00:00
drh
d3e1af4aa0 Merge all the latest changes from trunk. 
FossilOrigin-Name: b86590043e17705ada90562cf30f69b3e3ef65a4
 2016-02-25 18:54:30 +00:00
drh
5b081d8a28 Add extra API armor on the sqlite3_bind_blob() interface. 
FossilOrigin-Name: 80de1ad5eb4c3839756b6467d5b8195b4abfb1f8
 2016-02-18 01:29:12 +00:00
mistachkin
fad3039c51 Enhance ability to debug out-of-memory errors. 
FossilOrigin-Name: 6a9c4a3ebfb7cc0738ef6634440ccab44a21ff28
 2016-02-13 23:43:46 +00:00
drh
0ac7cfaf99 Merge enhancements from trunk. 
FossilOrigin-Name: a533608cb0de3cbc1e28a794aab99864b8c249f4
 2016-02-05 14:15:34 +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
33c1eb6477 Merge all recent enhancements from trunk. 
FossilOrigin-Name: f3f9200115caf4b356f90ec97c351d1afbcb9bf6
 2016-02-02 02:22:30 +00:00
dan
5b6c8e4e1d A different way to clear the subtype on VDBE registers when the value of the register is overwritten with new content. To fix [[f45ac567eaa9f93]. 
FossilOrigin-Name: 2e9fb1295cd31fc29c97444c3dec82fef68e939f
 2016-01-30 15:46:03 +00:00
drh
20f272c96f Merge recent enhancements from trunk. 
FossilOrigin-Name: 327af5f644a49b2f41d5456958f9d61a2b704e1c
 2016-01-20 11:33:37 +00:00
drh
2d80151f32 Combine the xFunc and xStep pointers of the FuncDef object into a single 
pointer xSFunc.

FossilOrigin-Name: 0d1b3d7d3ca66cb0b97493f1aeade1703af3c9f4
 2016-01-14 22:19:58 +00:00
drh
1bb15fc973 Merge recent enhancements from trunk. 
FossilOrigin-Name: d1a1278d7f3306536dc9cbd8fb300898f1e373e8
 2015-12-02 20:40:26 +00:00
drh
9ec0efd946 Merge all the latest trunk enhancements into the sessions branch. 
FossilOrigin-Name: c91065f8edb1e54076791716fc20d3fcfe3070dc
 2015-09-24 14:26:51 +00:00
drh
8faee877cb Fix compiler warnings. 
FossilOrigin-Name: 5c31ee62a196b914673384a611534fd778dc64b0
 2015-09-19 18:08:13 +00:00
drh
91762f2d18 Merge the latest trunk enhancements. 
FossilOrigin-Name: 22ce9218fb2bb56cc5dd4e32077a16f669250d5f
 2015-09-14 10:47:29 +00:00
drh
bcdf78a61c Experimental implementation of sqlite3_result_subtype() and 
sqlite3_value_subtype() interfaces.

FossilOrigin-Name: 7b5be299c617a3d3ed327ed30ef0a66a62c85b1f
 2015-09-10 20:34:56 +00:00