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/*
* Copyright (C) 2015 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#ifndef ScriptProfilingScope_h
#define ScriptProfilingScope_h
#include "Debugger.h"
#include "JSGlobalObject.h"
#include <wtf/Optional.h>
namespace JSC {
class ScriptProfilingScope {
public:
ScriptProfilingScope(JSGlobalObject* globalObject, ProfilingReason reason)
: m_globalObject(globalObject)
, m_reason(reason)
{
if (shouldStartProfile())
m_startTime = m_globalObject->debugger()->willEvaluateScript();
}
~ScriptProfilingScope()
{
if (shouldEndProfile())
m_globalObject->debugger()->didEvaluateScript(m_startTime.value(), m_reason);
}
private:
bool shouldStartProfile() const
{
if (!m_globalObject)
return false;
if (!m_globalObject->hasDebugger())
return false;
if (!m_globalObject->debugger()->hasProfilingClient())
return false;
if (m_globalObject->debugger()->isAlreadyProfiling())
return false;
return true;
}
bool shouldEndProfile() const
{
// Did not start a profile.
if (!m_startTime)
return false;
// Debugger may have been removed.
if (!m_globalObject->hasDebugger())
return false;
// Profiling Client may have been removed.
if (!m_globalObject->debugger()->hasProfilingClient())
return false;
return true;
}
JSGlobalObject* m_globalObject { nullptr };
Optional<double> m_startTime;
ProfilingReason m_reason;
};
}
#endif // ScriptProfilingScope_h
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