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Overview
| Comment: | Avoid taking locks on unused database connections when committing a read transaction. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
c0ee614fd988f445c4884a37f494479b |
| User & Date: | drh 2010-10-14 01:17:30 |
Context
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2010-10-21
| ||
| 02:05 | Fix the query planner so that it uses the multi-index OR-clause solution if that is the lowest cost estimate. A prior bug cause the multi-index solution to be ignored in some circumstances. (check-in: 28ba6255 user: drh tags: trunk) | |
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2010-10-19
| ||
| 14:08 | Experimental changes to fts4 to try to selectively avoid loading very large doclists. (check-in: 5ae0ba44 user: dan tags: experimental) | |
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2010-10-14
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| 01:17 | Avoid taking locks on unused database connections when committing a read transaction. (check-in: c0ee614f user: drh tags: trunk) | |
| 01:16 | Check-in [d3c95e3a4e08d0] was incorrect. This is the correct fix for sqlit3_bind_blob(). Ticket [860399cc408f2dd5f4] (check-in: ea8c2f5f user: drh tags: trunk) | |
Changes
Changes to src/btree.c.
3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 |
** the rollback journal (which causes the transaction to commit) and
** drop locks.
**
** This will release the write lock on the database file. If there
** are no active cursors, it also releases the read lock.
*/
int sqlite3BtreeCommitPhaseTwo(Btree *p){
BtShared *pBt = p->pBt;
sqlite3BtreeEnter(p);
btreeIntegrity(p);
/* If the handle has a write-transaction open, commit the shared-btrees
** transaction and set the shared state to TRANS_READ.
*/
if( p->inTrans==TRANS_WRITE ){
int rc;
assert( pBt->inTransaction==TRANS_WRITE );
assert( pBt->nTransaction>0 );
rc = sqlite3PagerCommitPhaseTwo(pBt->pPager);
if( rc!=SQLITE_OK ){
sqlite3BtreeLeave(p);
return rc;
}
|
< > > |
3163 3164 3165 3166 3167 3168 3169 3170 3171 3172 3173 3174 3175 3176 3177 3178 3179 3180 3181 3182 3183 3184 3185 3186 3187 |
** the rollback journal (which causes the transaction to commit) and
** drop locks.
**
** This will release the write lock on the database file. If there
** are no active cursors, it also releases the read lock.
*/
int sqlite3BtreeCommitPhaseTwo(Btree *p){
if( p->inTrans==TRANS_NONE ) return SQLITE_OK;
sqlite3BtreeEnter(p);
btreeIntegrity(p);
/* If the handle has a write-transaction open, commit the shared-btrees
** transaction and set the shared state to TRANS_READ.
*/
if( p->inTrans==TRANS_WRITE ){
int rc;
BtShared *pBt = p->pBt;
assert( pBt->inTransaction==TRANS_WRITE );
assert( pBt->nTransaction>0 );
rc = sqlite3PagerCommitPhaseTwo(pBt->pPager);
if( rc!=SQLITE_OK ){
sqlite3BtreeLeave(p);
return rc;
}
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