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100 check-ins occurring around 25f2246be404f38b.
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2014-09-01
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| 18:21 | Tweak the documentation for SQLITE_LIMIT_WORKER_THREADS. No changes to executable code. (check-in: 672e7387b1 user: drh tags: trunk) | |
| 17:36 | Add support for using separate worker threads to speed large sorts. The SQLITE_MAX_WORKER_THREADS and SQLITE_DEFAULT_WORKER_THREADS compile-time options and the SQLITE_LIMIT_WORKER_THREADS argument to sqlite3_limit() and the "PRAGMA threads=N" pragma are added. (check-in: b1c0f0bc1b user: drh tags: trunk) | |
| 13:37 | Attempt to make the xDelete method of the unix VFS more robust on VxWorks. (check-in: b0f6b91f36 user: drh tags: trunk) | |
| 13:29 | Micro-optimizations in sqlite3BtreeNext() and sqlite3BtreePrevious(). (check-in: 839c7996ee user: drh tags: trunk) | |
| 01:16 | Fix harmless compiler warnings for MSVC. (check-in: 3ef3246120 user: mistachkin tags: trunk) | |
| 01:15 | Merge updates from trunk. (check-in: 51f33cf129 user: mistachkin tags: asciiMode) | |
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2014-08-30
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| 15:49 | In the command-line shell, added options --lookaside, --pagecache, and --scratch used to configure auxiliary memories. (check-in: f61db04be4 user: drh tags: trunk) | |
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2014-08-29
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| 19:06 | Disable worker threads when SQLITE_THREADSAFE=0. Set the default compile-time maximum number of worker threads to 8 and honor the SQLITE_DEFAULT_WORKER_THREADS compile-time constant (which defaults to 0). (Closed-Leaf check-in: 33fa041049 user: drh tags: threads) | |
| 18:06 | Fix the speedtest1.c test program to set the worker thread count using the threads pragma. (check-in: 2ab4b5adc6 user: drh tags: threads) | |
| 16:20 | Add SQLITE_LIMIT_WORKER_THREADS for controlling the maximum number of worker threads. (check-in: 1b598c68f3 user: drh tags: threads) | |
| 14:40 | Merge recent performance enhancements from trunk onto the threads branch. (check-in: 35c44a3c73 user: drh tags: threads) | |
| 14:20 | Not a fault after all, rather a testing mistake. Move this change back to trunk. Was: Avoid an unnecessary OP_Move operation for expression subqueries. (check-in: 2a74129a21 user: drh tags: trunk) | |
| 12:29 | Contains a fault. Was: Avoid an unnecessary OP_Move operation for expression subqueries. (Closed-Leaf check-in: 462f42af52 user: drh tags: mistake) | |
| 11:24 | Add the sqlite3VdbeChangeDest() routine that can be used to eliminate OP_Move opcodes. (Closed-Leaf check-in: 8c57bcc327 user: drh tags: experimental) | |
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2014-08-28
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| 19:38 | Improved WHERETRACE messages for the estimated output row reductions from range scans. (check-in: fdd478bb11 user: drh tags: trunk) | |
| 17:30 | Fix a problem causing an inaccurate stat4-based estimate for the number of rows visited by a range scan. (check-in: a9daf3ac44 user: drh tags: trunk) | |
| 17:20 | Add a testcase() macro to help verfity the row estimation logic. (Closed-Leaf check-in: 6ba609522e user: drh tags: stat4-experimental) | |
| 16:01 | Fix a problem causing an inaccurate stat4-based estimate for the number of rows visited by a range scan. (check-in: 052d89b554 user: dan tags: stat4-experimental) | |
| 13:42 | Fix a formatting error ("%d" needed in place of "%g") on a WHERETRACE macro inside of the query planner. This fix applies to debugging logic only. (check-in: c931ca2b77 user: drh tags: trunk) | |
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2014-08-27
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| 23:18 | Refactor the sqlite3PcacheFetch() routine into three separate routines, which are significantly faster overall and about 100 bytes smaller in size as well. (check-in: bdb6e4978d user: drh tags: trunk) | |
| 17:53 | Add a VDBE synopsis comment for clarification. (check-in: 029a6dc744 user: mistachkin tags: trunk) | |
| 17:48 | Add a missing ticket number to a comment in index7.test. (check-in: d8b1c43361 user: dan tags: trunk) | |
| 17:37 | When determining whether or not a partial index is usable, do not assume that the cursor number assigned to each table in the query is the same as its index in the FROM clause. Fix for ticket [98d973b8f5]. (check-in: fcebca166f user: dan tags: trunk) | |
| 14:14 | 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. (check-in: 6c1ee3e388 user: drh tags: trunk) | |
| 03:28 | Factor out the exception paths from sqlite3ValueToText() into a separate function so that the main routine is much faster for the common case of no required type or encoding conversions. (check-in: 1624916c6e user: drh tags: trunk) | |
| 00:50 | Performance enhancement in sqlite3VdbeMemNulTerminate(). (check-in: f94cacc393 user: drh tags: trunk) | |
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2014-08-26
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| 15:06 | Change the page cache so that a new sqlite3_pcache object is allocated as soon as the page cache is opened, not delayed until the first fetch request. This give a noticable performance boost. The interface between pager and the page cache has changed slightly, which might break ZIPVFS. (check-in: f1f94a971e user: drh tags: trunk) | |
| 02:15 | Merge recent performance enhancements and the CAST operator enhancements into the sessions branch. (check-in: 08ae974ac8 user: drh tags: sessions) | |
| 02:02 | Merge recent performance enhancements and the CAST operator enhancements into the apple-osx branch. (check-in: 5c27311105 user: drh tags: apple-osx) | |
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2014-08-25
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| 23:44 | Remove the SQLITE_CONFIG_WORKER_THREADS configuration parameter. The number of worker threads in the sorter is now determined only by the PRAGMA threads=N setting. (check-in: e3305d4b4e user: drh tags: threads) | |
| 22:43 | Merge the CAST operator enhancements from trunk. (check-in: 6c8f86e4e0 user: drh tags: threads) | |
| 22:37 | Add an assert() and five testcase() macros to the OP_Cast opcode implementation to help verify that it is fully tested. (check-in: af364cce9d user: drh tags: trunk) | |
| 21:11 | Minor changes to the CAST logic to make it more testable. (check-in: 1ad70ec550 user: drh tags: trunk) | |
| 20:21 | Test cases added for using unary "+" and CAST operators on the RHS of range constraints and verifying that STAT3/4 can use those constraints. (check-in: 42505e5a81 user: drh tags: trunk) | |
| 20:11 | 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. (check-in: 91d8a8d0b7 user: drh tags: trunk) | |
| 19:58 | Add documentation for tokenizer api to fts5.h. Also add a script to extract extension API docs and format them as html. (check-in: e240d467e6 user: dan tags: fts5) | |
| 18:29 | In cases where stat4 data is available but cannot be used because the rhs of a range constraint is too complex a expression, fall back to using the default estimates for number of rows scanned. (check-in: e06dc6f0c3 user: dan tags: trunk) | |
| 15:13 | Query or change the maximum number of worker threads allowed on each database connection separately using the "PRAGMA threads" command. (check-in: 29c5e8a7c9 user: drh tags: threads) | |
| 13:27 | Merge the recent performance enhancements implemented on trunk into the threads branch. (check-in: dfdc900f5d user: drh tags: threads) | |
| 11:33 | Remove the pager_lookup() function since it is redundant with sqlite3PagerLookup(). (check-in: 54164ce47c user: drh tags: trunk) | |
| 11:20 | Change the name of the VdbeMemRelease() macro to VdbeMemReleaseExtern() to more accurately reflect what it does. Performance enhancement to the sqlite3VdbeMemRelease() function. (check-in: 3ca5846da7 user: drh tags: trunk) | |
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2014-08-24
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| 02:53 | The sqlite3VdbeChangeEncoding() routine goes about 3x faster if the sqlite3VdbeMemTranslate() subroutine is not inlined. (check-in: 0c7e1b875a user: drh tags: trunk) | |
| 01:32 | Patch the sqlite3PagerWrite() method in the Pager to run a bit faster. (check-in: c63311e2f3 user: drh tags: trunk) | |
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2014-08-23
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| 23:15 | Faster implementation of pcache1Fetch() (check-in: 0371cc3bb0 user: drh tags: trunk) | |
| 20:25 | Faster implementation of the sqlite3ApiExit() routine. (check-in: bd41d394d4 user: drh tags: trunk) | |
| 19:42 | Another memory allocator performance optimization. (check-in: 6da6f46d0c user: drh tags: trunk) | |
| 19:08 | Fix a variable-declaration after code problem in btree.c. Harmless in GCC and CLANG but unacceptable for MSVC. (check-in: 45abd5c0ba user: drh tags: trunk) | |
| 19:04 | Changes to sqlite3ScratchMalloc() that make the entire memory allocation interface a little faster and about 100 bytes smaller. (check-in: f83daa16f6 user: drh tags: trunk) | |
| 18:17 | Make the implementation of the sqlite3_aggregate_context() interface faster for second an subsequent invocations. This helps all aggregate functions to perform better. (check-in: 802148f311 user: drh tags: trunk) | |
| 17:41 | Improved performance in the type handling of arithmetic operators in the VDBE. (check-in: 0c0a603950 user: drh tags: trunk) | |
| 17:21 | Performance optimization in the applyAffinity() logic inside the VDBE. (check-in: 25f2246be4 user: drh tags: trunk) | |
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2014-08-22
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| 23:33 | 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. (check-in: ce123b5c59 user: drh tags: trunk) | |
| 22:26 | Factor the saveAllCursors() routine of btree.c into two separate routines, for a noticable performance improvement. (check-in: 3eb0843903 user: drh tags: trunk) | |
| 21:58 | Performance enhancements in the b-tree mutex logic. (check-in: 8914530644 user: drh tags: trunk) | |
| 20:35 | Combine the pcacheAddToDirtyList() and pcacheRemoveFromDirtyList() routines into a single pcacheManageDirtyList() routine. The resulting binary code is slightly faster and a few bytes smaller. (check-in: 6bcf1af6a4 user: drh tags: trunk) | |
| 19:12 | Revise #ifdef ordering to prefer the ANSI version of GetVersionEx, when available. (Closed-Leaf check-in: 9fe0f0754c user: mistachkin tags: winrt) | |
| 18:48 | Performance enhancement in sqlite3PutVarint(). (check-in: a929be5519 user: drh tags: trunk) | |
| 18:00 | Split the sqlite3Error() routine into sqlite3Error() and sqlite3ErrorWithMsg(), for a slight size reduction and performance increase. (check-in: cf561d1f0b user: drh tags: trunk) | |
| 15:40 | Performance improvement in the printf() logic by avoiding unnecessary stack pointer movement. (check-in: f7f2160db0 user: drh tags: trunk) | |
| 15:19 | Improve the performance and reduce the size of the sqlite3VdbeSerialGet() routine by avoiding the use of stack. (check-in: ebc10e46c1 user: drh tags: trunk) | |
| 14:56 | Handle the 4-byte integer case in the stackless routine. (Closed-Leaf check-in: 3f55484e81 user: drh tags: experimental) | |
| 14:34 | Get the sqlite3VdbeSerialGet() routine to run faster by avoiding the use of local variables. (check-in: 8267d82174 user: drh tags: experimental) | |
| 13:22 | Change a while-loop into a do-loop in sqlite3VdbeSerialPut() for a small size reduction and performance improvement. (check-in: 750bb0a096 user: drh tags: trunk) | |
| 11:11 | Enhance the spellfix extension with the ability to specify a rowid when inserting new rows. (check-in: 369c480cda user: drh tags: trunk) | |
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2014-08-21
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| 20:26 | Simplify the interface to the symbol table, saving 600 bytes of code space. (check-in: 14b0f561fe user: drh tags: trunk) | |
| 19:11 | For sqlite3_win32_is_nt(), assume WinRT is NT-based. (check-in: 2f59e71fbf user: mistachkin tags: winrt) | |
| 16:09 | Merge all recent trunk changes, especially the fix for ticket [369d57fb8e5ccdff06f1], but also the skip-scan improvement and performance improvements in the b-tree code. (check-in: 0b9e2c3269 user: drh tags: sessions) | |
| 14:10 | Fix a faulty assert() statement. Add comments to clarify the behavior of the sqlite3OpenTableAndIndices() routine in insert.c. Add test cases to verify that the assert() statement is not firing inappropriately. Ticket [369d57fb8e5ccdff06f1]. (check-in: 7029b3404d user: drh tags: trunk) | |
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2014-08-20
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| 23:42 | Increase the version number to 3.8.7 (check-in: 91594aae07 user: drh tags: trunk) | |
| 23:38 | Enhancements to skip-scan such that it is operable when a middle column of an index is skipped while the left-most column is constrained in the WHERE clause. (check-in: bc985caa78 user: drh tags: trunk) | |
| 18:43 | A small performance improvement in freeSpace() by special-casing the relatively common case of an empty freelist. (check-in: 49f44d355f user: drh tags: trunk) | |
| 17:56 | Reimplement the freeSpace() routine in btree.c so that it runs faster. (check-in: fe4fd014b4 user: drh tags: trunk) | |
| 14:37 | Refactor local variable names in the freeSpace() routine of btree.c for improved understandability. (check-in: 7e63089a19 user: drh tags: trunk) | |
| 13:35 | Size reduction and performance improvements in btree.c and the allocateSpace() routine. Also fix an assert() in freeSpace(). (check-in: 121308fa86 user: drh tags: trunk) | |
| 13:25 | Add SQLITE_API macros in front of interface routines in the test_intarray.c extension. (check-in: eea0661798 user: drh tags: trunk) | |
| 13:17 | Change an assert() added by the previous commit into a testcase(). Fix a separate assert() in btree.c:freeSpace(). (Closed-Leaf check-in: fe51d3aa0c user: drh tags: btree-speedup) | |
| 11:56 | Further size reduction and performance improvement in btree.c:allocateSpace(). (check-in: 1cb1cd6493 user: drh tags: btree-speedup) | |
| 10:42 | Fix a typo in the showdb usage message. (check-in: 6c66beae97 user: dan tags: trunk) | |
| 00:54 | Minor performance improvement and size reduction for the btree-page space allocator. (check-in: 73637d12e3 user: drh tags: trunk) | |
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2014-08-19
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| 23:04 | Modify the memsubsys1-3.1.4 test so that it does not fail arbitrarily due to variations in the behavior of system malloc(). (check-in: d280157da0 user: drh tags: trunk) | |
| 20:41 | A better fix for the sqlite3_trace() problem. Ticket [11d5aa455e0d98f3c1e6a] (check-in: 44d5bd4cc3 user: drh tags: trunk) | |
| 20:27 | Make sure the sqlite3_trace() callback is invoked, even if the prepared statement was marked "expired" before it ever entered sqlite3_step(). Ticket [11d5aa455e0d98f3c1e6a08]. (check-in: 0d4d3df4bc user: drh tags: trunk) | |
| 19:28 | Improvements to output formatting with the ".trace" command in the command-line shell. (check-in: d09d63c077 user: drh tags: trunk) | |
| 09:15 | Minor changes to do with the Tcl tea extension package autoconf system. (check-in: f10a611126 user: dan tags: trunk) | |
| 00:33 | Disable the hook-7.5.2 tests when using sessions, since that are not correct in that case. (check-in: 6d5b9332e8 user: drh tags: sessions) | |
| 00:26 | Improved response to error conditions in the ".session" shell command and in the "changeset" command-line program. (check-in: b69f7dd1f3 user: drh tags: sessions) | |
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2014-08-18
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| 20:23 | Fix the autoconf and MSVC makefiles so that they construct the changeset command-line utility upon request. Delete that utility program when "make clean" is run. (check-in: 4dc15fe066 user: drh tags: sessions) | |
| 20:14 | Fix a harmless compiler warning in the sessionAppendDelete() function. (check-in: 1324d08d0c user: drh tags: sessions) | |
| 20:08 | Add the "changeset" command-line tool for analyzing and manipulating changesets in files on disk. Add the ".session" command to the command-line tool. (check-in: 31addb627f user: drh tags: sessions) | |
| 20:01 | A reasonably complete implementation of the "changeset" command-line tool and the ".sessions" command in the command-line shell. (Closed-Leaf check-in: 7b12f1f9c0 user: drh tags: sessions_from_cli) | |
| 19:30 | Add an "automerge=0" mode that disables auto-merging and falls back to fts4-style crisis merges. (check-in: 2397404e15 user: dan tags: fts5) | |
| 17:56 | Add the "changeset" command-line utility for getting an ASCII dump of change sets. (check-in: 55bb3544a6 user: drh tags: sessions_from_cli) | |
| 16:03 | Add miscellaneous test cases to improve coverage of sessions module. (check-in: 0fac6cfffe user: dan tags: sessions) | |
| 15:08 | Begin adding commands to the command-line interface for interacting with the sessions extension. This is the first check-in of a work-in-progress. (check-in: c2fcf0b9f4 user: drh tags: sessions_from_cli) | |
| 13:48 | Merge the latest trunk changes, and in particular the refactoring of the object names in the command-line shell. (check-in: 419d286a2f user: drh tags: sessions) | |
| 13:45 | Refactor the names of state objects in the command-line shell implementation.. (check-in: 11a70e1ae7 user: drh tags: trunk) | |
| 08:42 | Add tests for sessions module. (check-in: 82fdb1975f user: dan tags: sessions) | |
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2014-08-16
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| 19:01 | Fix some missing and out-of-date comments in the sessions module. (check-in: 05c1d9149b user: dan tags: sessions) | |
| 16:47 | Fixes for the sqlite3changeset_concat() API regarding patchsets. (check-in: dccb348595 user: dan tags: sessions) | |
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2014-08-15
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| 20:15 | Begin adding the sqlite3session_patchset() API to the sessions extension. This is an interim commit. (check-in: 60a4565a8c user: dan tags: sessions) | |