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Changes In Branch mutexInitIsInitReCheck Excluding Merge-Ins
This is equivalent to a diff from 871e091d to 40493680
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2015-10-15
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| 21:30 | Performance optimization for the OP_Column opcode. (check-in: 076be547 user: drh tags: trunk) | |
| 21:13 | Merge updates from trunk. (Leaf check-in: 40493680 user: mistachkin tags: mutexInitIsInitReCheck) | |
| 21:12 | Merge updates from trunk. (Leaf check-in: a447cf90 user: mistachkin tags: mutexInitSimpleCmpSwap) | |
| 20:17 | Experiments with an OP_Unpack opcode that extracts multiple columns from a record without caching. (Leaf check-in: 39ae92f5 user: drh tags: unpack-opcode) | |
| 19:21 | Enhance the use of the column cache for UPDATE statements, making them more efficient for the case where a column is modified to be an expression of other unmodified columns. (check-in: 871e091d user: drh tags: trunk) | |
| 18:04 | Add the OP_IntCopy opcode - an optimized version of OP_SCopy that only works for integer values. (check-in: 3a2f73a4 user: drh tags: trunk) | |
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2015-09-23
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| 16:35 | Merge updates from trunk. (check-in: 0a75ebd2 user: mistachkin tags: mutexInitIsInitReCheck) | |
Changes to src/main.c.
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173 174 175 176 177 178 179 180 181 182 183 184 185 186 | 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 | + + + + + + |
** This operation is protected by the STATIC_MASTER mutex. Note that
** MutexAlloc() is called for a static mutex prior to initializing the
** malloc subsystem - this implies that the allocation of a static
** mutex must not require support from the malloc subsystem.
*/
MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
sqlite3_mutex_enter(pMaster);
if( sqlite3GlobalConfig.isInit ){
assert( sqlite3GlobalConfig.isMutexInit );
assert( sqlite3GlobalConfig.isMallocInit );
sqlite3_mutex_leave(pMaster);
return SQLITE_OK;
}
sqlite3GlobalConfig.isMutexInit = 1;
if( !sqlite3GlobalConfig.isMallocInit ){
rc = sqlite3MallocInit();
}
if( rc==SQLITE_OK ){
sqlite3GlobalConfig.isMallocInit = 1;
if( !sqlite3GlobalConfig.pInitMutex ){
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