1/*
2 * Copyright (C) 2018 Yusuke Suzuki <[email protected]>.
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(ASSEMBLER) && OS(LINUX)
29
30#include <stdio.h>
31#include <wtf/Lock.h>
32#include <wtf/text/CString.h>
33
34namespace JSC {
35
36class PerfLog {
37 WTF_MAKE_FAST_ALLOCATED;
38 WTF_MAKE_NONCOPYABLE(PerfLog);
39public:
40 static void log(CString&&, const uint8_t* executableAddress, size_t);
41
42private:
43 PerfLog();
44 static PerfLog& singleton();
45
46 void write(const AbstractLocker&, const void*, size_t);
47 void flush(const AbstractLocker&);
48
49 FILE* m_file { nullptr };
50 void* m_marker { nullptr };
51 uint64_t m_codeIndex { 0 };
52 int m_fd { -1 };
53 Lock m_lock;
54};
55
56} // namespace JSC
57
58#endif // ENABLE(ASSEMBLER) && OS(LINUX)
59