contrib/sqlite3/sqlite3.c

15562 /************** Begin file mem0.c ********************************************/
15622 /************** End of mem0.c ************************************************/
18815   ** The alarm callback and its arguments.  The mem0.mutex lock will
18839 } mem0 = { 0, 0, 0, 0, 0, 0, 0, 0 };
18841 #define mem0 GLOBAL(struct Mem0Global, mem0)
18866   sqlite3_mutex_enter(mem0.mutex);
18867   mem0.alarmCallback = xCallback;
18868   mem0.alarmArg = pArg;
18869   mem0.alarmThreshold = iThreshold;
18871   mem0.nearlyFull = (iThreshold>0 && iThreshold<=nUsed);
18872   sqlite3_mutex_leave(mem0.mutex);
18901   sqlite3_mutex_enter(mem0.mutex);
18902   priorLimit = mem0.alarmThreshold;
18903   sqlite3_mutex_leave(mem0.mutex);
18926   memset(&mem0, 0, sizeof(mem0));
18928     mem0.mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM);
18938     mem0.pScratchFree = pSlot;
18939     mem0.nScratchFree = n;
18945     mem0.pScratchEnd = (void*)&pSlot[1];
18947     mem0.pScratchEnd = 0;
18967   return mem0.nearlyFull;
18977   memset(&mem0, 0, sizeof(mem0));
19011   if( mem0.alarmCallback==0 ) return;
19012   xCallback = mem0.alarmCallback;
19014   pArg = mem0.alarmArg;
19015   mem0.alarmCallback = 0;
19016   sqlite3_mutex_leave(mem0.mutex);
19018   sqlite3_mutex_enter(mem0.mutex);
19019   mem0.alarmCallback = xCallback;
19020   mem0.alarmArg = pArg;
19030   assert( sqlite3_mutex_held(mem0.mutex) );
19033   if( mem0.alarmCallback!=0 ){
19035     if( nUsed >= mem0.alarmThreshold - nFull ){
19036       mem0.nearlyFull = 1;
19039       mem0.nearlyFull = 0;
19044   if( p==0 && mem0.alarmCallback ){
19074     sqlite3_mutex_enter(mem0.mutex);
19076     sqlite3_mutex_leave(mem0.mutex);
19119   sqlite3_mutex_enter(mem0.mutex);
19120   if( mem0.nScratchFree && sqlite3GlobalConfig.szScratch>=n ){
19121     p = mem0.pScratchFree;
19122     mem0.pScratchFree = mem0.pScratchFree->pNext;
19123     mem0.nScratchFree--;
19126     sqlite3_mutex_leave(mem0.mutex);
19132       sqlite3_mutex_leave(mem0.mutex);
19134       sqlite3_mutex_leave(mem0.mutex);
19139   assert( sqlite3_mutex_notheld(mem0.mutex) );
19165     if( p>=sqlite3GlobalConfig.pScratch && p<mem0.pScratchEnd ){
19169       sqlite3_mutex_enter(mem0.mutex);
19170       pSlot->pNext = mem0.pScratchFree;
19171       mem0.pScratchFree = pSlot;
19172       mem0.nScratchFree++;
19173       assert( mem0.nScratchFree <= (u32)sqlite3GlobalConfig.nScratch );
19175       sqlite3_mutex_leave(mem0.mutex);
19183         sqlite3_mutex_enter(mem0.mutex);
19188         sqlite3_mutex_leave(mem0.mutex);
19236     sqlite3_mutex_enter(mem0.mutex);
19240     sqlite3_mutex_leave(mem0.mutex);
19301     sqlite3_mutex_enter(mem0.mutex);
19305           mem0.alarmThreshold-nDiff ){
19311     if( pNew==0 && mem0.alarmCallback ){
19319     sqlite3_mutex_leave(mem0.mutex);