1  /*
 2   * Copyright (C) 2017-2018 Apple Inc. All rights reserved.
 3   *
 4   * Redistribution and use in source and binary forms, with or without
 5   * modification, are permitted provided that the following conditions
 6   * are met:
 7   * 1. Redistributions of source code must retain the above copyright
 8   *    notice, this list of conditions and the following disclaimer.
 9   * 2. Redistributions in binary form must reproduce the above copyright
10   *    notice, this list of conditions and the following disclaimer in the
11   *    documentation and/or other materials provided with the distribution.
12   *
13   * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
24   */
25  
26  #include "config.h"
27  #include "JSDestructibleObjectHeapCellType.h"
28  
29  #include "JSCJSValueInlines.h"
30  #include "JSDestructibleObject.h"
31  #include "MarkedBlockInlines.h"
32  
33  namespace JSC {
34  
35  struct JSDestructibleObjectDestroyFunc {
36      ALWAYS_INLINE void operator()(VM&, JSCell* cell) const
37      {
38          static_cast<JSDestructibleObject*>(cell)->classInfo()->methodTable.destroy(cell);
39      }
40  };
41  
42  JSDestructibleObjectHeapCellType::JSDestructibleObjectHeapCellType()
43      : HeapCellType(CellAttributes(NeedsDestruction, HeapCell::JSCell))
44  {
45  }
46  
47  JSDestructibleObjectHeapCellType::~JSDestructibleObjectHeapCellType()
48  {
49  }
50  
51  void JSDestructibleObjectHeapCellType::finishSweep(MarkedBlock::Handle& handle, FreeList* freeList)
52  {
53      handle.finishSweepKnowingHeapCellType(freeList, JSDestructibleObjectDestroyFunc());
54  }
55  
56  void JSDestructibleObjectHeapCellType::destroy(VM& vm, JSCell* cell)
57  {
58      JSDestructibleObjectDestroyFunc()(vm, cell);
59  }
60  
61  } // namespace JSC
62