1/*
2 * Copyright (C) 2011-2018 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#pragma once
27
28#include "DumpContext.h"
29#include "Structure.h"
30#include <wtf/TinyPtrSet.h>
31
32namespace JSC {
33
34class TrackedReferences;
35
36class StructureSet : public TinyPtrSet<Structure*> {
37public:
38 // I really want to do this:
39 // using TinyPtrSet::TinyPtrSet;
40 //
41 // But I can't because Windows.
42
43 StructureSet()
44 {
45 }
46
47 StructureSet(Structure* structure)
48 : TinyPtrSet(structure)
49 {
50 }
51
52 Structure* onlyStructure() const
53 {
54 return onlyEntry();
55 }
56
57 void markIfCheap(SlotVisitor&) const;
58 bool isStillAlive(VM&) const;
59
60 void dumpInContext(PrintStream&, DumpContext*) const;
61 void dump(PrintStream&) const;
62};
63
64} // namespace JSC
65