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* Copyright (C) 2008 Apple Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "CommonIdentifiers.h"
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#include "CallFrame.h"
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#include "CodeBlock.h"
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#include "InternalFunction.h"
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#include "JSFunction.h"
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#include "JSGlobalObject.h"
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#include "ProfileGenerator.h"
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#include "ProfileNode.h"
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static const char* GlobalCodeExecution = "(program)";
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static const char* AnonymousFunction = "(anonymous function)";
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static unsigned ProfilesUID = 0;
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static CallIdentifier createCallIdentifierFromFunctionImp(ExecState*, JSObject*, const String& defaultSourceURL, int defaultLineNumber);
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Profiler* Profiler::s_sharedProfiler = 0;
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Profiler* Profiler::profiler()
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if (!s_sharedProfiler)
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s_sharedProfiler = new Profiler();
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return s_sharedProfiler;
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void Profiler::startProfiling(ExecState* exec, const String& title)
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ASSERT_ARG(title, !title.isNull());
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// Check if we currently have a Profile for this global ExecState and title.
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// If so return early and don't create a new Profile.
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JSGlobalObject* origin = exec ? exec->lexicalGlobalObject() : 0;
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for (size_t i = 0; i < m_currentProfiles.size(); ++i) {
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ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
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if (profileGenerator->origin() == origin && profileGenerator->title() == title)
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exec->globalData().m_enabledProfiler = this;
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RefPtr<ProfileGenerator> profileGenerator = ProfileGenerator::create(exec, title, ++ProfilesUID);
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m_currentProfiles.append(profileGenerator);
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PassRefPtr<Profile> Profiler::stopProfiling(ExecState* exec, const String& title)
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JSGlobalObject* origin = exec ? exec->lexicalGlobalObject() : 0;
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for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) {
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ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
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if (profileGenerator->origin() == origin && (title.isNull() || profileGenerator->title() == title)) {
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profileGenerator->stopProfiling();
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RefPtr<Profile> returnProfile = profileGenerator->profile();
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m_currentProfiles.remove(i);
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if (!m_currentProfiles.size())
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exec->globalData().m_enabledProfiler = 0;
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void Profiler::stopProfiling(JSGlobalObject* origin)
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for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) {
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ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
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if (profileGenerator->origin() == origin) {
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profileGenerator->stopProfiling();
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m_currentProfiles.remove(i);
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if (!m_currentProfiles.size())
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origin->globalData().m_enabledProfiler = 0;
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static inline void dispatchFunctionToProfiles(ExecState* callerOrHandlerCallFrame, const Vector<RefPtr<ProfileGenerator> >& profiles, ProfileGenerator::ProfileFunction function, const CallIdentifier& callIdentifier, unsigned currentProfileTargetGroup)
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for (size_t i = 0; i < profiles.size(); ++i) {
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if (profiles[i]->profileGroup() == currentProfileTargetGroup || !profiles[i]->origin())
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(profiles[i].get()->*function)(callerOrHandlerCallFrame, callIdentifier);
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void Profiler::willExecute(ExecState* callerCallFrame, JSValue function)
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ASSERT(!m_currentProfiles.isEmpty());
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dispatchFunctionToProfiles(callerCallFrame, m_currentProfiles, &ProfileGenerator::willExecute, createCallIdentifier(callerCallFrame, function, "", 0), callerCallFrame->lexicalGlobalObject()->profileGroup());
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void Profiler::willExecute(ExecState* callerCallFrame, const String& sourceURL, int startingLineNumber)
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ASSERT(!m_currentProfiles.isEmpty());
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CallIdentifier callIdentifier = createCallIdentifier(callerCallFrame, JSValue(), sourceURL, startingLineNumber);
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dispatchFunctionToProfiles(callerCallFrame, m_currentProfiles, &ProfileGenerator::willExecute, callIdentifier, callerCallFrame->lexicalGlobalObject()->profileGroup());
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void Profiler::didExecute(ExecState* callerCallFrame, JSValue function)
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ASSERT(!m_currentProfiles.isEmpty());
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dispatchFunctionToProfiles(callerCallFrame, m_currentProfiles, &ProfileGenerator::didExecute, createCallIdentifier(callerCallFrame, function, "", 0), callerCallFrame->lexicalGlobalObject()->profileGroup());
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void Profiler::didExecute(ExecState* callerCallFrame, const String& sourceURL, int startingLineNumber)
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ASSERT(!m_currentProfiles.isEmpty());
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dispatchFunctionToProfiles(callerCallFrame, m_currentProfiles, &ProfileGenerator::didExecute, createCallIdentifier(callerCallFrame, JSValue(), sourceURL, startingLineNumber), callerCallFrame->lexicalGlobalObject()->profileGroup());
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void Profiler::exceptionUnwind(ExecState* handlerCallFrame)
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ASSERT(!m_currentProfiles.isEmpty());
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dispatchFunctionToProfiles(handlerCallFrame, m_currentProfiles, &ProfileGenerator::exceptionUnwind, createCallIdentifier(handlerCallFrame, JSValue(), "", 0), handlerCallFrame->lexicalGlobalObject()->profileGroup());
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CallIdentifier Profiler::createCallIdentifier(ExecState* exec, JSValue functionValue, const String& defaultSourceURL, int defaultLineNumber)
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return CallIdentifier(GlobalCodeExecution, defaultSourceURL, defaultLineNumber);
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if (!functionValue.isObject())
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return CallIdentifier("(unknown)", defaultSourceURL, defaultLineNumber);
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if (asObject(functionValue)->inherits(&JSFunction::s_info) || asObject(functionValue)->inherits(&InternalFunction::s_info))
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return createCallIdentifierFromFunctionImp(exec, asObject(functionValue), defaultSourceURL, defaultLineNumber);
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return CallIdentifier(makeString("(", asObject(functionValue)->methodTable()->className(asObject(functionValue)), " object)"), defaultSourceURL, defaultLineNumber);
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CallIdentifier createCallIdentifierFromFunctionImp(ExecState* exec, JSObject* function, const String& defaultSourceURL, int defaultLineNumber)
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const String& name = getCalculatedDisplayName(exec, function);
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JSFunction* jsFunction = jsDynamicCast<JSFunction*>(function);
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if (jsFunction && !jsFunction->isHostFunction())
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return CallIdentifier(name.isEmpty() ? AnonymousFunction : name, jsFunction->jsExecutable()->sourceURL(), jsFunction->jsExecutable()->lineNo());
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return CallIdentifier(name.isEmpty() ? AnonymousFunction : name, defaultSourceURL, defaultLineNumber);