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/*
* Copyright (C) 2018 Yusuke Suzuki <yusukesuzuki@slowstart.org>.
* Copyright (C) 2023 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if ENABLE(ASSEMBLER) && (OS(LINUX) || OS(DARWIN))
#include <stdio.h>
#include <wtf/Lock.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/text/CString.h>
namespace JSC {
class PerfLog {
WTF_MAKE_TZONE_ALLOCATED(PerfLog);
WTF_MAKE_NONCOPYABLE(PerfLog);
friend class LazyNeverDestroyed<PerfLog>;
public:
static void log(CString&&, const uint8_t* executableAddress, size_t);
static void flush();
private:
PerfLog();
static PerfLog& singleton();
void write(const AbstractLocker&, const void*, size_t) WTF_REQUIRES_LOCK(m_lock);
void flush(const AbstractLocker&) WTF_REQUIRES_LOCK(m_lock);
FILE* m_file { nullptr };
void* m_marker { nullptr };
uint64_t m_codeIndex { 0 };
int m_fd { -1 };
Lock m_lock;
};
} // namespace JSC
#endif // ENABLE(ASSEMBLER) && (OS(LINUX) || OS(DARWIN))
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