1/*
2 * Copyright (C) 2014 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 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#pragma once
30
31#include "JSCJSValue.h"
32#include "Structure.h"
33
34namespace JSC {
35
36class TypeLocation;
37
38class TypeProfilerLog {
39 WTF_MAKE_FAST_ALLOCATED;
40public:
41 struct LogEntry {
42 WTF_MAKE_STRUCT_FAST_ALLOCATED;
43 public:
44 friend class LLIntOffsetsExtractor;
45
46 JSValue value;
47 TypeLocation* location;
48 StructureID structureID;
49
50 static ptrdiff_t structureIDOffset() { return OBJECT_OFFSETOF(LogEntry, structureID); }
51 static ptrdiff_t valueOffset() { return OBJECT_OFFSETOF(LogEntry, value); }
52 static ptrdiff_t locationOffset() { return OBJECT_OFFSETOF(LogEntry, location); }
53 };
54
55
56 TypeProfilerLog(VM&);
57 ~TypeProfilerLog();
58
59 JS_EXPORT_PRIVATE void processLogEntries(VM&, const String&);
60 LogEntry* logEndPtr() const { return m_logEndPtr; }
61
62 void visit(SlotVisitor&);
63
64 static ptrdiff_t logStartOffset() { return OBJECT_OFFSETOF(TypeProfilerLog, m_logStartPtr); }
65 static ptrdiff_t currentLogEntryOffset() { return OBJECT_OFFSETOF(TypeProfilerLog, m_currentLogEntryPtr); }
66
67private:
68 friend class LLIntOffsetsExtractor;
69
70 VM& m_vm;
71 unsigned m_logSize;
72 LogEntry* m_logStartPtr;
73 LogEntry* m_currentLogEntryPtr;
74 LogEntry* m_logEndPtr;
75};
76
77} // namespace JSC
78