1  /*
 2   * Copyright (C) 2016 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  #pragma once
27  
28  #include "BytecodeStructs.h"
29  #include "CodeBlock.h"
30  #include "ObjectPropertyCondition.h"
31  #include "PackedCellPtr.h"
32  #include "Watchpoint.h"
33  
34  namespace JSC {
35  
36  class LLIntPrototypeLoadAdaptiveStructureWatchpoint final : public Watchpoint {
37  public:
38      LLIntPrototypeLoadAdaptiveStructureWatchpoint(CodeBlock*, const ObjectPropertyCondition&, unsigned bytecodeOffset);
39  
40      void install(VM&);
41  
42      static void clearLLIntGetByIdCache(GetByIdModeMetadata&);
43  
44      const ObjectPropertyCondition& key() const { return m_key; }
45  
46      void fireInternal(VM&, const FireDetail&);
47  
48  private:
49      // Own destructor may not be called. Keep members trivially destructible.
50      JSC_WATCHPOINT_FIELD(PackedCellPtr<CodeBlock>, m_owner);
51      JSC_WATCHPOINT_FIELD(Packed<unsigned>, m_bytecodeOffset);
52      JSC_WATCHPOINT_FIELD(ObjectPropertyCondition, m_key);
53  };
54  
55  } // namespace JSC