1/*
2 * Copyright (C) 2015-2017 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 "ObjectPropertyCondition.h"
29#include "Watchpoint.h"
30#include <wtf/FastMalloc.h>
31#include <wtf/Noncopyable.h>
32
33namespace JSC {
34
35class AdaptiveInferredPropertyValueWatchpointBase {
36 WTF_MAKE_NONCOPYABLE(AdaptiveInferredPropertyValueWatchpointBase);
37 WTF_MAKE_FAST_ALLOCATED;
38
39public:
40 AdaptiveInferredPropertyValueWatchpointBase(const ObjectPropertyCondition&);
41
42 const ObjectPropertyCondition& key() const { return m_key; }
43
44 void install(VM&);
45
46 virtual ~AdaptiveInferredPropertyValueWatchpointBase() = default;
47
48 class StructureWatchpoint final : public Watchpoint {
49 public:
50 StructureWatchpoint()
51 : Watchpoint(Watchpoint::Type::AdaptiveInferredPropertyValueStructure)
52 { }
53
54 void fireInternal(VM&, const FireDetail&);
55 };
56 // Own destructor may not be called. Keep members trivially destructible.
57 static_assert(sizeof(StructureWatchpoint) == sizeof(Watchpoint), "");
58
59 class PropertyWatchpoint final : public Watchpoint {
60 public:
61 PropertyWatchpoint()
62 : Watchpoint(Watchpoint::Type::AdaptiveInferredPropertyValueProperty)
63 { }
64
65 void fireInternal(VM&, const FireDetail&);
66 };
67 // Own destructor may not be called. Keep members trivially destructible.
68 static_assert(sizeof(PropertyWatchpoint) == sizeof(Watchpoint), "");
69
70protected:
71 virtual bool isValid() const;
72 virtual void handleFire(VM&, const FireDetail&) = 0;
73
74private:
75 void fire(VM&, const FireDetail&);
76
77 ObjectPropertyCondition m_key;
78 StructureWatchpoint m_structureWatchpoint;
79 PropertyWatchpoint m_propertyWatchpoint;
80};
81
82} // namespace JSC
83