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Overview
| Comment: | Optimization to sqlite3VtabUnlockList() for the common case when there is no work to do. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
fc8d45086dc2bcb9bce756088e99e63c |
| User & Date: | drh 2019-10-05 19:24:52 |
Context
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2019-10-05
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| 19:53 | Omit the check for conflicting shared-cache locks in sqlite3Prepare() if the database connection uses no shared cache. We might be able to go back and remove this code completely, due to the newer Schema.iGeneration logic, but that will take more analysis. This check-in gives the speed benefit but not the reduction in code size. check-in: 0b73a092 user: drh tags: trunk | |
| 19:24 | Optimization to sqlite3VtabUnlockList() for the common case when there is no work to do. check-in: fc8d4508 user: drh tags: trunk | |
| 18:33 | Call sqlite3Prepare() directly, rather than going through sqlite3_prepare(), when processing the sqlite_master.sql column for a schema. check-in: cc49380e user: drh tags: trunk | |
Changes
Changes to src/vtab.c.
301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 |
** the database handle mutex is held.
**
** As a result, a sqlite3.pDisconnect cannot be accessed simultaneously
** by multiple threads. It is thread-safe.
*/
void sqlite3VtabUnlockList(sqlite3 *db){
VTable *p = db->pDisconnect;
db->pDisconnect = 0;
assert( sqlite3BtreeHoldsAllMutexes(db) );
assert( sqlite3_mutex_held(db->mutex) );
if( p ){
sqlite3ExpirePreparedStatements(db, 0);
do {
VTable *pNext = p->pNext;
sqlite3VtabUnlock(p);
p = pNext;
}while( p );
}
|
< > |
301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 |
** the database handle mutex is held.
**
** As a result, a sqlite3.pDisconnect cannot be accessed simultaneously
** by multiple threads. It is thread-safe.
*/
void sqlite3VtabUnlockList(sqlite3 *db){
VTable *p = db->pDisconnect;
assert( sqlite3BtreeHoldsAllMutexes(db) );
assert( sqlite3_mutex_held(db->mutex) );
if( p ){
db->pDisconnect = 0;
sqlite3ExpirePreparedStatements(db, 0);
do {
VTable *pNext = p->pNext;
sqlite3VtabUnlock(p);
p = pNext;
}while( p );
}
|