Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Reduce the number of calls to sqlite3BeginBenignMalloc(). |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
0bee6583665782fac5d9e82bdf19b6f0 |
| User & Date: | drh 2015-09-01 19:51:37.710 |
Context
|
2015-09-01
| ||
| 20:09 | Small size reduction and performance increase in sqlite3DbMallocSize(). (check-in: 8a80967f84 user: drh tags: trunk) | |
| 19:51 | Reduce the number of calls to sqlite3BeginBenignMalloc(). (check-in: 0bee658366 user: drh tags: trunk) | |
|
2015-08-29
| ||
| 19:41 | Enhance the json_extract() function so that if given multiple PATH arguments it will return a JSON array with all of the answers. Also update comments within the json1 extension to reflect stricter interpretation of JSON and PATH arguments. (check-in: 1da60c3dda user: drh tags: trunk) | |
Changes
Changes to src/pcache1.c.
| ︙ | ︙ | |||
388 389 390 391 392 393 394 | } } #endif /* SQLITE_ENABLE_MEMORY_MANAGEMENT */ /* ** Allocate a new page object initially associated with cache pCache. */ | | > > | 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 |
}
}
#endif /* SQLITE_ENABLE_MEMORY_MANAGEMENT */
/*
** Allocate a new page object initially associated with cache pCache.
*/
static PgHdr1 *pcache1AllocPage(PCache1 *pCache, int benignMalloc){
PgHdr1 *p = 0;
void *pPg;
assert( sqlite3_mutex_held(pCache->pGroup->mutex) );
if( pCache->pFree || (pCache->nPage==0 && pcache1InitBulk(pCache)) ){
p = pCache->pFree;
pCache->pFree = p->pNext;
p->pNext = 0;
}else{
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
/* The group mutex must be released before pcache1Alloc() is called. This
** is because it might call sqlite3_release_memory(), which assumes that
** this mutex is not held. */
assert( pcache1.separateCache==0 );
assert( pCache->pGroup==&pcache1.grp );
pcache1LeaveMutex(pCache->pGroup);
#endif
if( benignMalloc ) sqlite3BeginBenignMalloc();
#ifdef SQLITE_PCACHE_SEPARATE_HEADER
pPg = pcache1Alloc(pCache->szPage);
p = sqlite3Malloc(sizeof(PgHdr1) + pCache->szExtra);
if( !pPg || !p ){
pcache1Free(pPg);
sqlite3_free(p);
pPg = 0;
}
#else
pPg = pcache1Alloc(pCache->szAlloc);
p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage];
#endif
if( benignMalloc ) sqlite3EndBenignMalloc();
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
pcache1EnterMutex(pCache->pGroup);
#endif
if( pPg==0 ) return 0;
p->page.pBuf = pPg;
p->page.pExtra = &p[1];
p->isBulkLocal = 0;
|
| ︙ | ︙ | |||
863 864 865 866 867 868 869 |
}
}
/* Step 5. If a usable page buffer has still not been found,
** attempt to allocate a new one.
*/
if( !pPage ){
| < | < | 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 |
}
}
/* Step 5. If a usable page buffer has still not been found,
** attempt to allocate a new one.
*/
if( !pPage ){
pPage = pcache1AllocPage(pCache, createFlag==1);
}
if( pPage ){
unsigned int h = iKey % pCache->nHash;
pCache->nPage++;
pPage->iKey = iKey;
pPage->pNext = pCache->apHash[h];
|
| ︙ | ︙ |