1  /*
 2   * Copyright (C) 2015 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 "TrackedReferences.h"
28  
29  #include "JSCJSValueInlines.h"
30  #include <wtf/CommaPrinter.h>
31  
32  namespace JSC {
33  
34  TrackedReferences::TrackedReferences()
35  {
36  }
37  
38  TrackedReferences::~TrackedReferences()
39  {
40  }
41  
42  void TrackedReferences::add(JSCell* cell)
43  {
44      if (cell)
45          m_references.add(cell);
46  }
47  
48  void TrackedReferences::add(JSValue value)
49  {
50      if (value.isCell())
51          add(value.asCell());
52  }
53  
54  void TrackedReferences::check(JSCell* cell) const
55  {
56      if (!cell)
57          return;
58      
59      if (m_references.contains(cell))
60          return;
61      
62      dataLog("Found untracked reference: ", JSValue(cell), "\n");
63      dataLog("All tracked references: ", *this, "\n");
64      RELEASE_ASSERT_NOT_REACHED();
65  }
66  
67  void TrackedReferences::check(JSValue value) const
68  {
69      if (value.isCell())
70          check(value.asCell());
71  }
72  
73  void TrackedReferences::dump(PrintStream& out) const
74  {
75      CommaPrinter comma;
76      for (JSCell* cell : m_references)
77          out.print(comma, RawPointer(cell));
78  }
79  
80  } // namespace JSC
81