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Overview
| Comment: | Fix the sqlite3_release_memory() interface so that it does not attempt to free SQLITE_CONFIG_PAGECACHE memory. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
0426cd62d5ef2bd09570835c78f8fc3b |
| User & Date: | drh 2010-08-20 09:14:13 |
Context
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2010-08-20
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| 09:53 | Disable the MEMSYS2 auxiliary routines if MEMSYS2 is changed to an alternative memory allocator using SQLITE_CONFIG_MALLOC. check-in: 541dd3b8 user: drh tags: trunk | |
| 09:14 | Fix the sqlite3_release_memory() interface so that it does not attempt to free SQLITE_CONFIG_PAGECACHE memory. check-in: 0426cd62 user: drh tags: trunk | |
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2010-08-19
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| 18:05 | Adjust filename globbing in backcompat.test for Windows. check-in: b0f47963 user: shaneh tags: trunk | |
Changes
Changes to src/pcache1.c.
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sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
iSize = sqlite3MallocSize(p);
sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, -iSize);
sqlite3_free(p);
}
}
/*
** Allocate a new page object initially associated with cache pCache.
*/
static PgHdr1 *pcache1AllocPage(PCache1 *pCache){
int nByte = sizeof(PgHdr1) + pCache->szPage;
void *pPg = pcache1Alloc(nByte);
PgHdr1 *p;
................................................................................
*/
int sqlite3PcacheReleaseMemory(int nReq){
int nFree = 0;
if( pcache1.pStart==0 ){
PgHdr1 *p;
pcache1EnterMutex();
while( (nReq<0 || nFree<nReq) && (p=pcache1.pLruTail) ){
nFree += sqlite3MallocSize(PGHDR1_TO_PAGE(p));
pcache1PinPage(p);
pcache1RemoveFromHash(p);
pcache1FreePage(p);
}
pcache1LeaveMutex();
}
return nFree;
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sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
iSize = sqlite3MallocSize(p);
sqlite3StatusAdd(SQLITE_STATUS_PAGECACHE_OVERFLOW, -iSize);
sqlite3_free(p);
}
}
#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
/*
** Return the size of a pache allocation
*/
static int pcache1MemSize(void *p){
assert( sqlite3_mutex_held(pcache1.mutex) );
if( p>=pcache1.pStart && p<pcache1.pEnd ){
return pcache1.szSlot;
}else{
int iSize;
assert( sqlite3MemdebugHasType(p, MEMTYPE_PCACHE) );
sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
iSize = sqlite3MallocSize(p);
sqlite3MemdebugSetType(p, MEMTYPE_PCACHE);
return iSize;
}
}
#endif /* SQLITE_ENABLE_MEMORY_MANAGEMENT */
/*
** Allocate a new page object initially associated with cache pCache.
*/
static PgHdr1 *pcache1AllocPage(PCache1 *pCache){
int nByte = sizeof(PgHdr1) + pCache->szPage;
void *pPg = pcache1Alloc(nByte);
PgHdr1 *p;
................................................................................
*/
int sqlite3PcacheReleaseMemory(int nReq){
int nFree = 0;
if( pcache1.pStart==0 ){
PgHdr1 *p;
pcache1EnterMutex();
while( (nReq<0 || nFree<nReq) && (p=pcache1.pLruTail) ){
nFree += pcache1MemSize(PGHDR1_TO_PAGE(p));
pcache1PinPage(p);
pcache1RemoveFromHash(p);
pcache1FreePage(p);
}
pcache1LeaveMutex();
}
return nFree;
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