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/*
* Copyright (C) 2008, 2012, 2014 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 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 "LegacyProfiler.h"
#include "CallFrame.h"
#include "CodeBlock.h"
#include "CommonIdentifiers.h"
#include "InternalFunction.h"
#include "JSFunction.h"
#include "JSGlobalObject.h"
#include "Nodes.h"
#include "JSCInlines.h"
#include "Profile.h"
#include "ProfileGenerator.h"
#include "ProfileNode.h"
namespace JSC {
static const char* GlobalCodeExecution = "(program)";
static const char* AnonymousFunction = "(anonymous function)";
static unsigned ProfilesUID = 0;
static CallIdentifier createCallIdentifierFromFunctionImp(ExecState*, JSObject*, const String& defaultSourceURL, unsigned defaultLineNumber, unsigned defaultColumnNumber);
LegacyProfiler* LegacyProfiler::s_sharedLegacyProfiler = nullptr;
LegacyProfiler* LegacyProfiler::profiler()
{
if (!s_sharedLegacyProfiler)
s_sharedLegacyProfiler = new LegacyProfiler();
return s_sharedLegacyProfiler;
}
void LegacyProfiler::startProfiling(ExecState* exec, const String& title, PassRefPtr<Stopwatch> stopwatch)
{
if (!exec)
return;
// Check if we currently have a Profile for this global ExecState and title.
// If so return early and don't create a new Profile.
JSGlobalObject* origin = exec->lexicalGlobalObject();
for (size_t i = 0; i < m_currentProfiles.size(); ++i) {
ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
if (profileGenerator->origin() == origin && profileGenerator->title() == title)
return;
}
exec->vm().setEnabledProfiler(this);
RefPtr<ProfileGenerator> profileGenerator = ProfileGenerator::create(exec, title, ++ProfilesUID, stopwatch);
m_currentProfiles.append(profileGenerator);
}
RefPtr<Profile> LegacyProfiler::stopProfiling(ExecState* exec, const String& title)
{
if (!exec)
return nullptr;
JSGlobalObject* origin = exec->lexicalGlobalObject();
for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) {
ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
if (profileGenerator->origin() == origin && (title.isNull() || profileGenerator->title() == title)) {
profileGenerator->stopProfiling();
RefPtr<Profile> returnProfile = profileGenerator->profile();
m_currentProfiles.remove(i);
if (!m_currentProfiles.size())
exec->vm().setEnabledProfiler(nullptr);
return returnProfile;
}
}
return nullptr;
}
void LegacyProfiler::stopProfiling(JSGlobalObject* origin)
{
for (ptrdiff_t i = m_currentProfiles.size() - 1; i >= 0; --i) {
ProfileGenerator* profileGenerator = m_currentProfiles[i].get();
if (profileGenerator->origin() == origin) {
profileGenerator->stopProfiling();
m_currentProfiles.remove(i);
if (!m_currentProfiles.size())
origin->vm().setEnabledProfiler(nullptr);
}
}
}
static inline void callFunctionForProfilesWithGroup(std::function<void(ProfileGenerator*)> callback, const Vector<RefPtr<ProfileGenerator>>& profiles, unsigned targetProfileGroup)
{
for (const RefPtr<ProfileGenerator>& profile : profiles) {
if (profile->profileGroup() == targetProfileGroup || !profile->origin())
callback(profile.get());
}
}
void LegacyProfiler::suspendProfiling(JSC::ExecState* exec)
{
if (!exec)
return;
callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::setIsSuspended, std::placeholders::_1, true), m_currentProfiles, exec->lexicalGlobalObject()->profileGroup());
}
void LegacyProfiler::unsuspendProfiling(JSC::ExecState* exec)
{
if (!exec)
return;
callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::setIsSuspended, std::placeholders::_1, false), m_currentProfiles, exec->lexicalGlobalObject()->profileGroup());
}
void LegacyProfiler::willExecute(ExecState* callerCallFrame, JSValue function)
{
ASSERT(!m_currentProfiles.isEmpty());
CallIdentifier callIdentifier = createCallIdentifier(callerCallFrame, function, StringImpl::empty(), 0, 0);
callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::willExecute, std::placeholders::_1, callerCallFrame, callIdentifier), m_currentProfiles, callerCallFrame->lexicalGlobalObject()->profileGroup());
}
void LegacyProfiler::willExecute(ExecState* callerCallFrame, const String& sourceURL, unsigned startingLineNumber, unsigned startingColumnNumber)
{
ASSERT(!m_currentProfiles.isEmpty());
CallIdentifier callIdentifier = createCallIdentifier(callerCallFrame, JSValue(), sourceURL, startingLineNumber, startingColumnNumber);
callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::willExecute, std::placeholders::_1, callerCallFrame, callIdentifier), m_currentProfiles, callerCallFrame->lexicalGlobalObject()->profileGroup());
}
void LegacyProfiler::didExecute(ExecState* callerCallFrame, JSValue function)
{
ASSERT(!m_currentProfiles.isEmpty());
CallIdentifier callIdentifier = createCallIdentifier(callerCallFrame, function, StringImpl::empty(), 0, 0);
callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::didExecute, std::placeholders::_1, callerCallFrame, callIdentifier), m_currentProfiles, callerCallFrame->lexicalGlobalObject()->profileGroup());
}
void LegacyProfiler::didExecute(ExecState* callerCallFrame, const String& sourceURL, unsigned startingLineNumber, unsigned startingColumnNumber)
{
ASSERT(!m_currentProfiles.isEmpty());
CallIdentifier callIdentifier = createCallIdentifier(callerCallFrame, JSValue(), sourceURL, startingLineNumber, startingColumnNumber);
callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::didExecute, std::placeholders::_1, callerCallFrame, callIdentifier), m_currentProfiles, callerCallFrame->lexicalGlobalObject()->profileGroup());
}
void LegacyProfiler::exceptionUnwind(ExecState* handlerCallFrame)
{
ASSERT(!m_currentProfiles.isEmpty());
CallIdentifier callIdentifier = createCallIdentifier(handlerCallFrame, JSValue(), StringImpl::empty(), 0, 0);
callFunctionForProfilesWithGroup(std::bind(&ProfileGenerator::exceptionUnwind, std::placeholders::_1, handlerCallFrame, callIdentifier), m_currentProfiles, handlerCallFrame->lexicalGlobalObject()->profileGroup());
}
CallIdentifier LegacyProfiler::createCallIdentifier(ExecState* exec, JSValue functionValue, const String& defaultSourceURL, unsigned defaultLineNumber, unsigned defaultColumnNumber)
{
if (!functionValue)
return CallIdentifier(ASCIILiteral(GlobalCodeExecution), defaultSourceURL, defaultLineNumber, defaultColumnNumber);
if (!functionValue.isObject())
return CallIdentifier(ASCIILiteral("(unknown)"), defaultSourceURL, defaultLineNumber, defaultColumnNumber);
if (asObject(functionValue)->inherits(JSFunction::info()) || asObject(functionValue)->inherits(InternalFunction::info()))
return createCallIdentifierFromFunctionImp(exec, asObject(functionValue), defaultSourceURL, defaultLineNumber, defaultColumnNumber);
if (asObject(functionValue)->inherits(JSCallee::info()))
return CallIdentifier(ASCIILiteral(GlobalCodeExecution), defaultSourceURL, defaultLineNumber, defaultColumnNumber);
return CallIdentifier(asObject(functionValue)->methodTable()->className(asObject(functionValue)), defaultSourceURL, defaultLineNumber, defaultColumnNumber);
}
CallIdentifier createCallIdentifierFromFunctionImp(ExecState* exec, JSObject* function, const String& defaultSourceURL, unsigned defaultLineNumber, unsigned defaultColumnNumber)
{
const String& name = getCalculatedDisplayName(exec, function);
JSFunction* jsFunction = jsDynamicCast<JSFunction*>(function);
if (jsFunction && !jsFunction->isHostOrBuiltinFunction())
return CallIdentifier(name.isEmpty() ? ASCIILiteral(AnonymousFunction) : name, jsFunction->jsExecutable()->sourceURL(), jsFunction->jsExecutable()->firstLine(), jsFunction->jsExecutable()->startColumn());
return CallIdentifier(name.isEmpty() ? ASCIILiteral(AnonymousFunction) : name, defaultSourceURL, defaultLineNumber, defaultColumnNumber);
}
} // namespace JSC
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