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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.
*
* 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.
*/
#include "config.h"
#include "ProfileGenerator.h"
#include "CallFrame.h"
#include "CodeBlock.h"
#include "JSGlobalObject.h"
#include "JSStringRef.h"
#include "JSFunction.h"
#include "Interpreter.h"
#include "LegacyProfiler.h"
#include "Operations.h"
#include "Profile.h"
#include "Tracing.h"
namespace JSC {
static const char* NonJSExecution = "(idle)";
PassRefPtr<ProfileGenerator> ProfileGenerator::create(ExecState* exec, const String& title, unsigned uid)
{
return adoptRef(new ProfileGenerator(exec, title, uid));
}
ProfileGenerator::ProfileGenerator(ExecState* exec, const String& title, unsigned uid)
: m_origin(exec ? exec->lexicalGlobalObject() : 0)
, m_profileGroup(exec ? exec->lexicalGlobalObject()->profileGroup() : 0)
{
m_profile = Profile::create(title, uid);
m_currentNode = m_head = m_profile->head();
if (exec)
addParentForConsoleStart(exec);
}
void ProfileGenerator::addParentForConsoleStart(ExecState* exec)
{
int lineNumber;
intptr_t sourceID;
String sourceURL;
JSValue function;
exec->interpreter()->retrieveLastCaller(exec, lineNumber, sourceID, sourceURL, function);
m_currentNode = ProfileNode::create(exec, LegacyProfiler::createCallIdentifier(exec, function ? function.toThisObject(exec) : 0, sourceURL, lineNumber), m_head.get(), m_head.get());
m_head->insertNode(m_currentNode.get());
}
const String& ProfileGenerator::title() const
{
return m_profile->title();
}
void ProfileGenerator::willExecute(ExecState* callerCallFrame, const CallIdentifier& callIdentifier)
{
if (JAVASCRIPTCORE_PROFILE_WILL_EXECUTE_ENABLED()) {
CString name = callIdentifier.m_name.utf8();
CString url = callIdentifier.m_url.utf8();
JAVASCRIPTCORE_PROFILE_WILL_EXECUTE(m_profileGroup, const_cast<char*>(name.data()), const_cast<char*>(url.data()), callIdentifier.m_lineNumber);
}
if (!m_origin)
return;
ASSERT(m_currentNode);
m_currentNode = m_currentNode->willExecute(callerCallFrame, callIdentifier);
}
void ProfileGenerator::didExecute(ExecState* callerCallFrame, const CallIdentifier& callIdentifier)
{
if (JAVASCRIPTCORE_PROFILE_DID_EXECUTE_ENABLED()) {
CString name = callIdentifier.m_name.utf8();
CString url = callIdentifier.m_url.utf8();
JAVASCRIPTCORE_PROFILE_DID_EXECUTE(m_profileGroup, const_cast<char*>(name.data()), const_cast<char*>(url.data()), callIdentifier.m_lineNumber);
}
if (!m_origin)
return;
ASSERT(m_currentNode);
if (m_currentNode->callIdentifier() != callIdentifier) {
RefPtr<ProfileNode> returningNode = ProfileNode::create(callerCallFrame, callIdentifier, m_head.get(), m_currentNode.get());
returningNode->setStartTime(m_currentNode->startTime());
returningNode->didExecute();
m_currentNode->insertNode(returningNode.release());
return;
}
m_currentNode = m_currentNode->didExecute();
}
void ProfileGenerator::exceptionUnwind(ExecState* handlerCallFrame, const CallIdentifier&)
{
// If the current node was called by the handler (==) or any
// more nested function (>) the we have exited early from it.
ASSERT(m_currentNode);
while (m_currentNode->callerCallFrame() >= handlerCallFrame) {
didExecute(m_currentNode->callerCallFrame(), m_currentNode->callIdentifier());
ASSERT(m_currentNode);
}
}
void ProfileGenerator::stopProfiling()
{
m_profile->forEach(&ProfileNode::stopProfiling);
removeProfileStart();
removeProfileEnd();
ASSERT(m_currentNode);
// Set the current node to the parent, because we are in a call that
// will not get didExecute call.
m_currentNode = m_currentNode->parent();
if (double headSelfTime = m_head->selfTime()) {
RefPtr<ProfileNode> idleNode = ProfileNode::create(0, CallIdentifier(NonJSExecution, String(), 0), m_head.get(), m_head.get());
idleNode->setTotalTime(headSelfTime);
idleNode->setSelfTime(headSelfTime);
idleNode->setVisible(true);
m_head->setSelfTime(0.0);
m_head->addChild(idleNode.release());
}
}
// The console.ProfileGenerator that started this ProfileGenerator will be the first child.
void ProfileGenerator::removeProfileStart()
{
ProfileNode* currentNode = 0;
for (ProfileNode* next = m_head.get(); next; next = next->firstChild())
currentNode = next;
if (currentNode->callIdentifier().m_name != "profile")
return;
// Attribute the time of the node aobut to be removed to the self time of its parent
currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime());
currentNode->parent()->removeChild(currentNode);
}
// The console.ProfileGeneratorEnd that stopped this ProfileGenerator will be the last child.
void ProfileGenerator::removeProfileEnd()
{
ProfileNode* currentNode = 0;
for (ProfileNode* next = m_head.get(); next; next = next->lastChild())
currentNode = next;
if (currentNode->callIdentifier().m_name != "profileEnd")
return;
// Attribute the time of the node aobut to be removed to the self time of its parent
currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime());
ASSERT(currentNode->callIdentifier() == (currentNode->parent()->children()[currentNode->parent()->children().size() - 1])->callIdentifier());
currentNode->parent()->removeChild(currentNode);
}
} // namespace JSC
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