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/*
* Copyright (C) 2008 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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.
*/
#include "config.h"
#include "Profiler.h"
#include "CommonIdentifiers.h"
#include "CallFrame.h"
#include "CodeBlock.h"
#include "JSFunction.h"
#include "JSGlobalObject.h"
#include "Nodes.h"
#include "Profile.h"
#include "ProfileGenerator.h"
#include "ProfileNode.h"
#include <stdio.h>
namespace JSC {
static const char* GlobalCodeExecution = "(program)";
static const char* AnonymousFunction = "(anonymous function)";
static unsigned ProfilesUID = 0;
static CallIdentifier createCallIdentifierFromFunctionImp(ExecState*, JSFunction*);
Profiler* Profiler::s_sharedProfiler = 0;
Profiler* Profiler::s_sharedEnabledProfilerReference = 0;
Profiler* Profiler::profiler()
{
if (!s_sharedProfiler)
s_sharedProfiler = new Profiler();
return s_sharedProfiler;
}
void Profiler::startProfiling(ExecState* exec, const UString& title)
{
ASSERT_ARG(title, !title.isNull());
// Check if we currently have a Profile for this global ExecState and title.
// If so return early and don't create a new Profile.
ExecState* globalExec = exec ? exec->lexicalGlobalObject()->globalExec() : 0;
for (size_t i = 0; i < m_currentProfiles.size(); ++i) {
ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
if (profileGenerator->originatingGlobalExec() == globalExec && profileGenerator->title() == title)
return;
}
s_sharedEnabledProfilerReference = this;
RefPtr<ProfileGenerator> profileGenerator = ProfileGenerator::create(title, exec, ++ProfilesUID);
m_currentProfiles.append(profileGenerator);
}
PassRefPtr<Profile> Profiler::stopProfiling(ExecState* exec, const UString& title)
{
ExecState* globalExec = exec ? exec->lexicalGlobalObject()->globalExec() : 0;
for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) {
ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
if (profileGenerator->originatingGlobalExec() == globalExec && (title.isNull() || profileGenerator->title() == title)) {
profileGenerator->stopProfiling();
RefPtr<Profile> returnProfile = profileGenerator->profile();
m_currentProfiles.remove(i);
if (!m_currentProfiles.size())
s_sharedEnabledProfilerReference = 0;
return returnProfile;
}
}
return 0;
}
static inline void dispatchFunctionToProfiles(const Vector<RefPtr<ProfileGenerator> >& profiles, ProfileGenerator::ProfileFunction function, const CallIdentifier& callIdentifier, unsigned currentProfileTargetGroup)
{
for (size_t i = 0; i < profiles.size(); ++i) {
if (profiles[i]->profileGroup() == currentProfileTargetGroup || !profiles[i]->originatingGlobalExec())
(profiles[i].get()->*function)(callIdentifier);
}
}
void Profiler::willExecute(ExecState* exec, JSValue function)
{
ASSERT(!m_currentProfiles.isEmpty());
dispatchFunctionToProfiles(m_currentProfiles, &ProfileGenerator::willExecute, createCallIdentifier(exec, function, "", 0), exec->lexicalGlobalObject()->profileGroup());
}
void Profiler::willExecute(ExecState* exec, const UString& sourceURL, int startingLineNumber)
{
ASSERT(!m_currentProfiles.isEmpty());
CallIdentifier callIdentifier = createCallIdentifier(exec, JSValue(), sourceURL, startingLineNumber);
dispatchFunctionToProfiles(m_currentProfiles, &ProfileGenerator::willExecute, callIdentifier, exec->lexicalGlobalObject()->profileGroup());
}
void Profiler::didExecute(ExecState* exec, JSValue function)
{
ASSERT(!m_currentProfiles.isEmpty());
dispatchFunctionToProfiles(m_currentProfiles, &ProfileGenerator::didExecute, createCallIdentifier(exec, function, "", 0), exec->lexicalGlobalObject()->profileGroup());
}
void Profiler::didExecute(ExecState* exec, const UString& sourceURL, int startingLineNumber)
{
ASSERT(!m_currentProfiles.isEmpty());
dispatchFunctionToProfiles(m_currentProfiles, &ProfileGenerator::didExecute, createCallIdentifier(exec, JSValue(), sourceURL, startingLineNumber), exec->lexicalGlobalObject()->profileGroup());
}
CallIdentifier Profiler::createCallIdentifier(ExecState* exec, JSValue functionValue, const UString& defaultSourceURL, int defaultLineNumber)
{
if (!functionValue)
return CallIdentifier(GlobalCodeExecution, defaultSourceURL, defaultLineNumber);
if (!functionValue.isObject())
return CallIdentifier("(unknown)", defaultSourceURL, defaultLineNumber);
if (asObject(functionValue)->inherits(&JSFunction::info)) {
JSFunction* function = asFunction(functionValue);
if (!function->executable()->isHostFunction())
return createCallIdentifierFromFunctionImp(exec, function);
}
if (asObject(functionValue)->inherits(&InternalFunction::info))
return CallIdentifier(static_cast<InternalFunction*>(asObject(functionValue))->name(exec), defaultSourceURL, defaultLineNumber);
return CallIdentifier(makeString("(", asObject(functionValue)->className(), " object)"), defaultSourceURL, defaultLineNumber);
}
CallIdentifier createCallIdentifierFromFunctionImp(ExecState* exec, JSFunction* function)
{
ASSERT(!function->isHostFunction());
const UString& name = function->calculatedDisplayName(exec);
return CallIdentifier(name.isEmpty() ? AnonymousFunction : name, function->jsExecutable()->sourceURL(), function->jsExecutable()->lineNo());
}
} // namespace JSC
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