1/*
2 * Copyright (C) 2019 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#if ENABLE(WEBASSEMBLY)
29
30#include <wtf/HashSet.h>
31#include <wtf/Lock.h>
32
33namespace JSC { namespace Wasm {
34
35class Callee;
36
37class CalleeRegistry {
38 WTF_MAKE_FAST_ALLOCATED;
39 WTF_MAKE_NONCOPYABLE(CalleeRegistry);
40public:
41 static void initialize();
42 static CalleeRegistry& singleton();
43
44 Lock& getLock() { return m_lock; }
45
46 void registerCallee(Callee* callee)
47 {
48 auto locker = holdLock(m_lock);
49 m_calleeSet.add(callee);
50 }
51
52 void unregisterCallee(Callee* callee)
53 {
54 auto locker = holdLock(m_lock);
55 m_calleeSet.remove(callee);
56 }
57
58 const HashSet<Callee*>& allCallees(const AbstractLocker&)
59 {
60 return m_calleeSet;
61 }
62
63 bool isValidCallee(const AbstractLocker&, Callee* callee)
64 {
65 if (!HashSet<Callee*>::isValidValue(callee))
66 return false;
67 return m_calleeSet.contains(callee);
68 }
69
70 CalleeRegistry() = default;
71
72private:
73 Lock m_lock;
74 HashSet<Callee*> m_calleeSet;
75};
76
77} } // namespace JSC::Wasm
78
79#endif // ENABLE(WEBASSEMBLY)
80