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52 check-ins using file src/btree.c version 56e1732e
2016-10-01
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23:55 | Add SQLITE_USE_ALLOCA to the --lean configuration in speed-check.sh. (check-in: fe07609e user: drh tags: trunk) | |
21:43 | Rearrange fields in the Parse object to reduce the amount of initialization required. (check-in: 361940b4 user: drh tags: trunk) | |
20:43 | Reduce the width of a memset() to avoid double-initializing some variables. (check-in: 34edbfd1 user: drh tags: trunk) | |
19:32 | Remove an unnecessary memset() call. (check-in: a76bff74 user: drh tags: trunk) | |
19:21 | Use sqlite3DbMallocRawNN() where appropriate, instead of sqlite3DbMallocRaw(). (check-in: 54a449a4 user: drh tags: trunk) | |
16:53 | Make sure deleting an unused prepared statement does not reference uninitialized fields in the structure. (check-in: 7983eef0 user: drh tags: trunk) | |
11:39 | Avoid accessing Vdbe.pc if it is uninitialized. Check Vdbe.magic first. (check-in: 6ac6e446 user: drh tags: trunk) | |
00:37 | Avoid unnecessary zeroing of fields in the Vdbe object when it is allocated. (check-in: 1e21bbe8 user: drh tags: trunk) | |
2016-09-30
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22:24 | Avoid initializing the column-cache section of the Parse object, since entries in the cache will be initialized as they are used, and avoiding the initial memset() saves many CPU cycles. (check-in: 63cf7eaf user: drh tags: trunk) | |
21:20 | Fix an always-true conditional left over from the previous commit. (check-in: ab12fce3 user: drh tags: trunk) | |
20:22 | Fix the Parse.aColCache column cache so that all of the valid entries are in the first Parse.nColCache slots. (check-in: 60285020 user: drh tags: trunk) | |
19:14 | Another simplification to the Parse object. (check-in: c1419727 user: drh tags: trunk) | |
18:35 | Remove unnecessary fields from the Parse object. (check-in: 814e41da user: drh tags: trunk) | |
17:46 | Avoid unnecessary Mem initializations when generating a new sqlite3_stmt object. (check-in: 47ae1cda user: drh tags: trunk) | |
2016-09-29
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20:28 | Small size and performance optimization to sqlite3VdbeChangeP5(). (check-in: 3c93c8f5 user: drh tags: trunk) | |
19:50 | Remove the peep-hole optimization of removing OP_Close opcodes that come before OP_Halt, as the extra work of removing those opcodes uses more cycles than just running them. (check-in: 984a96d7 user: drh tags: trunk) | |
19:27 | Size and performance optimization to sqlite3ValueFromExpr() (check-in: 945f82bc user: drh tags: trunk) | |
15:53 | Clarification and typo-fixes in comments. No changes to code. (check-in: e2cd79aa user: drh tags: trunk) | |
2016-09-28
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20:42 | Use Knuth multiplicative hashing for the symbol table. (check-in: cc29ddd6 user: drh tags: trunk) | |
16:05 | Two more typo fixes in comments. (check-in: 40c0fb0a user: drh tags: trunk) | |
16:04 | Fix typos in comments. No code changes. (check-in: 5bbd071d user: drh tags: trunk) | |
2016-09-27
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00:09 | Update requirements marks due to improvements in the wording of documentation. No changes to code. (check-in: bf903b2e user: drh tags: trunk) | |
00:03 | Fix FTS3 test cases due to the flattener change of the previous check-in. (check-in: 0c8b9b21 user: drh tags: trunk) | |
2016-09-26
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14:39 | When flattening a query of the form "SELECT * FROM (SELECT * FROM tbl WHERE x=?) WHERE y=?", ensure that the final WHERE clause is "x=? AND y=?" instead of "y=? AND x=?". Although it is still not guaranteed, this makes the order in which WHERE clause terms are processed comport more closely to users expectations. (check-in: cf7f9e6d user: dan tags: trunk) | |
12:38 | Inline the relevent parts of sqlite3ExprAlloc() into spanExpr(), for a performance improvement. (check-in: fe89225e user: drh tags: trunk) | |
2016-09-24
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17:42 | Omit the LikeOp object from the parser. Change more sqlite3PExpr() calls into sqlite3ExprAlloc() calls. (check-in: 795454a3 user: drh tags: trunk) | |
01:41 | Add -DSQLITE_MAX_EXPR_DEPTH=0 to the --lean option on speed-check.sh. (check-in: a8cb1390 user: drh tags: trunk) | |
2016-09-23
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21:36 | Add the EP_Leaf flag bit to the Expr.flags field to indicate Expr nodes that do not have substructure. Use that bit to avoid unnecessary recursion. (check-in: 8a6ea455 user: drh tags: trunk) | |
20:59 | Use sqlite3ExprAlloc() instead of sqlite3PExpr() for leaf nodes in the expression tree, where appropriate. This is both smaller and faster. (check-in: afac0709 user: drh tags: trunk) | |
18:13 | New test case for the ORDER BY LIMIT optimization. (check-in: 9a5a489d user: drh tags: trunk) | |
2016-09-22
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21:37 | 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. (check-in: ee1382a3 user: drh tags: trunk) | |
18:53 | Remove the internal sqlite3CodeOnce() interface, replacing it with a direct call to sqlite3VdbeAddOp0(v,OP_Once). Slightly smaller and faster. (check-in: c3774c6a user: drh tags: trunk) | |
18:46 | Makefile changes to support building winsqlite3.dll using STDCALL rather than CDECL. (check-in: 5e892d60 user: mistachkin tags: trunk) | |
2016-09-21
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23:58 | Fix speedtest1.c so that it works with SQLITE_OMIT_DEPRECATED. Add the --lean and --cachesize options to speed-check.sh. (check-in: 7785b3a2 user: drh tags: trunk) | |
19:43 | Fix a problem with the fts5 auxiliary function API causing a crash when a query contained a phrase of zero terms. (check-in: 0741812d user: dan tags: trunk) | |
19:00 | Do not run vacuummem.test if ENABLE_MEMORY_MANAGEMENT is defined. (check-in: 4a613d85 user: dan tags: trunk) | |
18:18 | Fix obsolete requirements marks. Add new tests for VACUUM of attached databases. (check-in: 2b44f9aa user: drh tags: trunk) | |
17:53 | Avoid running vacuum5.test in auto-vacuum mode. (check-in: be184bef user: dan tags: trunk) | |
17:47 | Do not run test "delete_db.test" with either the journaltest or inmemoryjournal permutations. Ensure that the multiplexor tests in delete_db.test are performed in non-autovacuum mode. (check-in: 46b7d19e user: dan tags: trunk) | |
14:41 | Update the fts5vocab table to handle "ORDER BY term" efficiently. (check-in: d4928fb5 user: dan tags: trunk) | |
2016-09-20
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22:04 | Improved implementation of 64-bit signed integer multiply that correctly detects overflow (and promotes to floating-point) in some corner cases. Fix for ticket [1ec41379c9c1e400] (check-in: db3ebd7c user: drh tags: trunk) | |
17:49 | Fix harmless compiler warning. (check-in: 72429063 user: mistachkin tags: trunk) | |
17:38 | Fix typo in comment. (check-in: bd3ecbb5 user: mistachkin tags: trunk) | |
01:46 | Further performance enhancements in zeroblob() handling. (check-in: 21b0e3b7 user: drh tags: trunk) | |
01:19 | Avoid unnecessary calls to ExpandBlob() for smaller and faster code. (check-in: 5e196fd1 user: drh tags: trunk) | |
2016-09-19
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23:39 | Very small optimization in the bytecode engine. (check-in: 46002511 user: drh tags: trunk) | |
11:00 | Fix a segfault introduced by the row-value enhancement that comes up on a skip-scan where the first term of the index is unconstrained and the second term is of the form "columm IN (SELECT...)". (check-in: 2401ea5a user: drh tags: trunk) | |
10:24 | Improved performance in sqlite3ExprCodeTarget(). (check-in: 75146165 user: drh tags: trunk) | |
02:19 | Small performance optimization in the expression walker. (check-in: c6e6afb9 user: drh tags: trunk) | |
2016-09-18
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16:08 | Revise the implementation of OP_Once so that it is smaller, faster, and uses less memory. This also fixes an obscure bug introduced 3 days ago by check-in [5990a1bdb4a073]. (check-in: 6bf5ba10 user: drh tags: trunk) | |
2016-09-17
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22:46 | Minor enhancement to the TclKit batch tool: it should download the TclKit EXE alone when the TCLKIT_NOENV environment variable is set. (check-in: baceb988 user: mistachkin tags: trunk) | |
19:34 | Small performance optimization in the freeSpace() routine of btree.c. (check-in: 63962e2a user: drh tags: trunk) | |