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Overview
| Comment: | Interchange two conditions in an "if" statment in sqlite3PagerAcquire() for very slight (0.06%) overall performance increase. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
fbcc1a3ebb016225c3580181c908a290 |
| User & Date: | drh 2013-12-08 19:54:52 |
Context
|
2013-12-08
| ||
| 22:59 | Avoid unnecessary calls to sqlite3VarintLen() from the OP_MakeRecord opcode. check-in: 7a234fc3 user: drh tags: trunk | |
| 19:54 | Interchange two conditions in an "if" statment in sqlite3PagerAcquire() for very slight (0.06%) overall performance increase. check-in: fbcc1a3e user: drh tags: trunk | |
|
2013-12-07
| ||
| 17:01 | Increase the version number to 3.8.3. check-in: 23d00f22 user: drh tags: trunk | |
Changes
Changes to src/pager.c.
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}else{
if( bMmapOk && pagerUseWal(pPager) ){
rc = sqlite3WalFindFrame(pPager->pWal, pgno, &iFrame);
if( rc!=SQLITE_OK ) goto pager_acquire_err;
}
if( iFrame==0 && bMmapOk ){
void *pData = 0;
rc = sqlite3OsFetch(pPager->fd,
(i64)(pgno-1) * pPager->pageSize, pPager->pageSize, &pData
);
if( rc==SQLITE_OK && pData ){
|
| |
5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 5302 |
}else{
if( bMmapOk && pagerUseWal(pPager) ){
rc = sqlite3WalFindFrame(pPager->pWal, pgno, &iFrame);
if( rc!=SQLITE_OK ) goto pager_acquire_err;
}
if( bMmapOk && iFrame==0 ){
void *pData = 0;
rc = sqlite3OsFetch(pPager->fd,
(i64)(pgno-1) * pPager->pageSize, pPager->pageSize, &pData
);
if( rc==SQLITE_OK && pData ){
|