/* ** Deprecated external interface. Internal/core SQLite code ** should call sqlite3MemoryAlarm. */ int sqlite3_memory_alarm( void(*xCallback)(void *pArg, sqlite3_int64 used,int N), void *pArg, sqlite3_int64 iThreshold ){ return sqlite3MemoryAlarm(xCallback, pArg, iThreshold); }
sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 n){ sqlite3_int64 priorLimit; sqlite3_int64 excess; #ifndef SQLITE_OMIT_AUTOINIT sqlite3_initialize(); #endif sqlite3_mutex_enter(mem0.mutex); priorLimit = mem0.alarmThreshold; sqlite3_mutex_leave(mem0.mutex); if( n<0 ) return priorLimit; if( n>0 ){ sqlite3MemoryAlarm(softHeapLimitEnforcer, 0, n); }else{ sqlite3MemoryAlarm(0, 0, 0); } excess = sqlite3_memory_used() - n; if( excess>0 ) sqlite3_release_memory((int)(excess & 0x7fffffff)); return priorLimit; }
/* ** Set the soft heap-size limit for the library. Passing a zero or ** negative value indicates no limit. */ void sqlite3_soft_heap_limit(int n){ sqlite3_uint64 iLimit; int overage; if( n<0 ){ iLimit = 0; }else{ iLimit = n; } sqlite3_initialize(); if( iLimit>0 ){ sqlite3MemoryAlarm(softHeapLimitEnforcer, 0, iLimit); }else{ sqlite3MemoryAlarm(0, 0, 0); } overage = (int)(sqlite3_memory_used() - (i64)n); if( overage>0 ){ sqlite3_release_memory(overage); } }