Exemplo n.º 1
0
int sqlite3DbMallocSize(sqlite3 *db, void *p){
  assert( db==0 || sqlite3_mutex_held(db->mutex) );
  if( p==0 ){
    return 0;
  }else if( isLookaside(db, p) ){
    return db->lookaside.sz;
  }else{
    return sqlite3GlobalConfig.m.xSize(p);
  }
}
Exemplo n.º 2
0
int sqlite3DbMallocSize(sqlite3 *db, void *p){
  assert( db==0 || sqlite3_mutex_held(db->mutex) );
  if( db && isLookaside(db, p) ){
    return db->lookaside.sz;
  }else{
    assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) );
    assert( sqlite3MemdebugHasType(p, MEMTYPE_LOOKASIDE|MEMTYPE_HEAP) );
    assert( db!=0 || sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) );
    return sqlite3GlobalConfig.m.xSize(p);
  }
}
Exemplo n.º 3
0
/*
** Free memory that might be associated with a particular database
** connection.
*/
void sqlite3DbFree(sqlite3 *db, void *p){
  assert( db==0 || sqlite3_mutex_held(db->mutex) );
  if( isLookaside(db, p) ){
    LookasideSlot *pBuf = (LookasideSlot*)p;
    pBuf->pNext = db->lookaside.pFree;
    db->lookaside.pFree = pBuf;
    db->lookaside.nOut--;
  }else{
    sqlite3_free(p);
  }
}
Exemplo n.º 4
0
int systemCtxMallocSize(appContext *db, void *p)
{
	assert(db == 0 || system_mutex_held(db->mutex));
	if (db && isLookaside(db, p))
		return db->lookaside.sz;
	else
	{
		assert(systemMemdebugHasType(p, MEMTYPE_DB));
		assert(systemMemdebugHasType(p, MEMTYPE_LOOKASIDE | MEMTYPE_HEAP));
		assert(db != 0 || systemMemdebugNoType(p, MEMTYPE_LOOKASIDE));
		return systemGlobalConfig.m.xSize(p);
	}
}
Exemplo n.º 5
0
/*
** Free memory that might be associated with a particular database
** connection.
*/
void sqlite3DbFree(sqlite3 *db, void *p){
  assert( db==0 || sqlite3_mutex_held(db->mutex) );
  if( isLookaside(db, p) ){
    LookasideSlot *pBuf = (LookasideSlot*)p;
    pBuf->pNext = db->lookaside.pFree;
    db->lookaside.pFree = pBuf;
    db->lookaside.nOut--;
  }else{
    assert( sqlite3MemdebugHasType(p, MEMTYPE_DB|MEMTYPE_HEAP) );
    sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
    sqlite3_free(p);
  }
}
Exemplo n.º 6
0
int sqlite3DbMallocSize(sqlite3 *db, void *p){
  assert( p!=0 );
  if( db==0 || !isLookaside(db,p) ){
#if SQLITE_DEBUG
    if( db==0 ){
      assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
      assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
    }else{
      assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
      assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
    }
#endif
    return sqlite3GlobalConfig.m.xSize(p);
  }else{
    assert( sqlite3_mutex_held(db->mutex) );
    return db->lookaside.sz;
  }
}
Exemplo n.º 7
0
void sqlite3DbFree(sqlite3 *db, void *p){
  assert( db==0 || sqlite3_mutex_held(db->mutex) );
  if( db ){
    if( db->pnBytesFreed ){
      *db->pnBytesFreed += sqlite3DbMallocSize(db, p);
      return;
    }
    if( isLookaside(db, p) ){
      LookasideSlot *pBuf = (LookasideSlot*)p;
      pBuf->pNext = db->lookaside.pFree;
      db->lookaside.pFree = pBuf;
      db->lookaside.nOut--;
      return;
    }
  }
  assert( sqlite3MemdebugHasType(p, MEMTYPE_DB) );
  assert( sqlite3MemdebugHasType(p, MEMTYPE_LOOKASIDE|MEMTYPE_HEAP) );
  assert( db!=0 || sqlite3MemdebugNoType(p, MEMTYPE_LOOKASIDE) );
  sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
  sqlite3_free(p);
}
Exemplo n.º 8
0
/*
** Resize the block of memory pointed to by p to n bytes. If the resize fails, set the mallocFailed flag in the connection object.
*/
void *systemCtxRealloc(appContext *db, void *p, int n)
{
	void *pNew = 0;
	assert(db != 0);
	assert(system_mutex_held(db->mutex));
	if (db->mallocFailed == 0)
	{
		if (p == 0)
			return systemCtxMallocRaw(db, n);
		if (isLookaside(db, p))
		{
			if (n <= db->lookaside.sz)
				return p;
			pNew = systemCtxMallocRaw(db, n);
			if (pNew)
			{
				memcpy(pNew, p, db->lookaside.sz);
				systemCtxFree(db, p);
			}
		}
		else
		{
			assert(systemMemdebugHasType(p, MEMTYPE_DB));
			assert(systemMemdebugHasType(p, MEMTYPE_LOOKASIDE|MEMTYPE_HEAP));
			systemMemdebugSetType(p, MEMTYPE_HEAP);
			pNew = system_realloc(p, n);
			if (!pNew)
			{
				systemMemdebugSetType(p, MEMTYPE_DB|MEMTYPE_HEAP);
				db->mallocFailed = 1;
			}
			systemMemdebugSetType(pNew, MEMTYPE_DB | (db->lookaside.bEnabled ? MEMTYPE_LOOKASIDE : MEMTYPE_HEAP));
		}
	}
	return pNew;
}
Exemplo n.º 9
0
/*
** Resize the block of memory pointed to by p to n bytes. If the
** resize fails, set the mallocFailed flag in the connection object.
*/
void *sqlite3DbRealloc(sqlite3 *db, void *p, int n){
  void *pNew = 0;
  if( db->mallocFailed==0 ){
    if( p==0 ){
      return sqlite3DbMallocRaw(db, n);
    }
    if( isLookaside(db, p) ){
      if( n<=db->lookaside.sz ){
        return p;
      }
      pNew = sqlite3DbMallocRaw(db, n);
      if( pNew ){
        memcpy(pNew, p, db->lookaside.sz);
        sqlite3DbFree(db, p);
      }
    }else{
      pNew = sqlite3_realloc(p, n);
      if( !pNew ){
        db->mallocFailed = 1;
      }
    }
  }
  return pNew;
}