contrib/sqlite3/sqlite3.c

18392 /************** Begin file mem0.c ********************************************/
18453 /************** End of mem0.c ************************************************/
22091 } mem0 = { 0, 0, 0, 0, 0, 0 };
22093 #define mem0 GLOBAL(struct Mem0Global, mem0)
22099   return mem0.mutex;
22132   sqlite3_mutex_enter(mem0.mutex);
22133   priorLimit = mem0.alarmThreshold;
22135     sqlite3_mutex_leave(mem0.mutex);
22138   mem0.alarmThreshold = n;
22140   mem0.nearlyFull = (n>0 && n<=nUsed);
22141   sqlite3_mutex_leave(mem0.mutex);
22159   memset(&mem0, 0, sizeof(mem0));
22160   mem0.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM);
22169     mem0.pScratchFree = pSlot;
22170     mem0.nScratchFree = n;
22176     mem0.pScratchEnd = (void*)&pSlot[1];
22178     mem0.pScratchEnd = 0;
22189   if( rc!=SQLITE_OK ) memset(&mem0, 0, sizeof(mem0));
22199   return mem0.nearlyFull;
22209   memset(&mem0, 0, sizeof(mem0));
22236   if( mem0.alarmThreshold<=0 ) return;
22237   sqlite3_mutex_leave(mem0.mutex);
22239   sqlite3_mutex_enter(mem0.mutex);
22249   assert( sqlite3_mutex_held(mem0.mutex) );
22252   if( mem0.alarmThreshold>0 ){
22254     if( nUsed >= mem0.alarmThreshold - nFull ){
22255       mem0.nearlyFull = 1;
22258       mem0.nearlyFull = 0;
22263   if( p==0 && mem0.alarmThreshold>0 ){
22291     sqlite3_mutex_enter(mem0.mutex);
22293     sqlite3_mutex_leave(mem0.mutex);
22342   sqlite3_mutex_enter(mem0.mutex);
22344   if( mem0.nScratchFree && sqlite3GlobalConfig.szScratch>=n ){
22345     p = mem0.pScratchFree;
22346     mem0.pScratchFree = mem0.pScratchFree->pNext;
22347     mem0.nScratchFree--;
22349     sqlite3_mutex_leave(mem0.mutex);
22351     sqlite3_mutex_leave(mem0.mutex);
22354       sqlite3_mutex_enter(mem0.mutex);
22356       sqlite3_mutex_leave(mem0.mutex);
22360   assert( sqlite3_mutex_notheld(mem0.mutex) );
22387     if( SQLITE_WITHIN(p, sqlite3GlobalConfig.pScratch, mem0.pScratchEnd) ){
22391       sqlite3_mutex_enter(mem0.mutex);
22392       pSlot->pNext = mem0.pScratchFree;
22393       mem0.pScratchFree = pSlot;
22394       mem0.nScratchFree++;
22395       assert( mem0.nScratchFree <= (u32)sqlite3GlobalConfig.nScratch );
22397       sqlite3_mutex_leave(mem0.mutex);
22405         sqlite3_mutex_enter(mem0.mutex);
22410         sqlite3_mutex_leave(mem0.mutex);
22469     sqlite3_mutex_enter(mem0.mutex);
22473     sqlite3_mutex_leave(mem0.mutex);
22545     sqlite3_mutex_enter(mem0.mutex);
22549           mem0.alarmThreshold-nDiff ){
22553     if( pNew==0 && mem0.alarmThreshold>0 ){
22561     sqlite3_mutex_leave(mem0.mutex);