1/* 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "ProfileGenerator.h" 28 29#include "CallFrame.h" 30#include "CodeBlock.h" 31#include "JSGlobalObject.h" 32#include "JSStringRef.h" 33#include "JSFunction.h" 34#include "Interpreter.h" 35#include "LegacyProfiler.h" 36#include "Operations.h" 37#include "Profile.h" 38#include "Tracing.h" 39 40namespace JSC { 41 42static const char* NonJSExecution = "(idle)"; 43 44PassRefPtr<ProfileGenerator> ProfileGenerator::create(ExecState* exec, const String& title, unsigned uid) 45{ 46 return adoptRef(new ProfileGenerator(exec, title, uid)); 47} 48 49ProfileGenerator::ProfileGenerator(ExecState* exec, const String& title, unsigned uid) 50 : m_origin(exec ? exec->lexicalGlobalObject() : 0) 51 , m_profileGroup(exec ? exec->lexicalGlobalObject()->profileGroup() : 0) 52{ 53 m_profile = Profile::create(title, uid); 54 m_currentNode = m_head = m_profile->head(); 55 if (exec) 56 addParentForConsoleStart(exec); 57} 58 59void ProfileGenerator::addParentForConsoleStart(ExecState* exec) 60{ 61 int lineNumber; 62 intptr_t sourceID; 63 String sourceURL; 64 JSValue function; 65 66 exec->interpreter()->retrieveLastCaller(exec, lineNumber, sourceID, sourceURL, function); 67 m_currentNode = ProfileNode::create(exec, LegacyProfiler::createCallIdentifier(exec, function ? function.toThisObject(exec) : 0, sourceURL, lineNumber), m_head.get(), m_head.get()); 68 m_head->insertNode(m_currentNode.get()); 69} 70 71const String& ProfileGenerator::title() const 72{ 73 return m_profile->title(); 74} 75 76void ProfileGenerator::willExecute(ExecState* callerCallFrame, const CallIdentifier& callIdentifier) 77{ 78 if (JAVASCRIPTCORE_PROFILE_WILL_EXECUTE_ENABLED()) { 79 CString name = callIdentifier.m_name.utf8(); 80 CString url = callIdentifier.m_url.utf8(); 81 JAVASCRIPTCORE_PROFILE_WILL_EXECUTE(m_profileGroup, const_cast<char*>(name.data()), const_cast<char*>(url.data()), callIdentifier.m_lineNumber); 82 } 83 84 if (!m_origin) 85 return; 86 87 ASSERT(m_currentNode); 88 m_currentNode = m_currentNode->willExecute(callerCallFrame, callIdentifier); 89} 90 91void ProfileGenerator::didExecute(ExecState* callerCallFrame, const CallIdentifier& callIdentifier) 92{ 93 if (JAVASCRIPTCORE_PROFILE_DID_EXECUTE_ENABLED()) { 94 CString name = callIdentifier.m_name.utf8(); 95 CString url = callIdentifier.m_url.utf8(); 96 JAVASCRIPTCORE_PROFILE_DID_EXECUTE(m_profileGroup, const_cast<char*>(name.data()), const_cast<char*>(url.data()), callIdentifier.m_lineNumber); 97 } 98 99 if (!m_origin) 100 return; 101 102 ASSERT(m_currentNode); 103 if (m_currentNode->callIdentifier() != callIdentifier) { 104 RefPtr<ProfileNode> returningNode = ProfileNode::create(callerCallFrame, callIdentifier, m_head.get(), m_currentNode.get()); 105 returningNode->setStartTime(m_currentNode->startTime()); 106 returningNode->didExecute(); 107 m_currentNode->insertNode(returningNode.release()); 108 return; 109 } 110 111 m_currentNode = m_currentNode->didExecute(); 112} 113 114void ProfileGenerator::exceptionUnwind(ExecState* handlerCallFrame, const CallIdentifier&) 115{ 116 // If the current node was called by the handler (==) or any 117 // more nested function (>) the we have exited early from it. 118 ASSERT(m_currentNode); 119 while (m_currentNode->callerCallFrame() >= handlerCallFrame) { 120 didExecute(m_currentNode->callerCallFrame(), m_currentNode->callIdentifier()); 121 ASSERT(m_currentNode); 122 } 123} 124 125void ProfileGenerator::stopProfiling() 126{ 127 m_profile->forEach(&ProfileNode::stopProfiling); 128 129 removeProfileStart(); 130 removeProfileEnd(); 131 132 ASSERT(m_currentNode); 133 134 // Set the current node to the parent, because we are in a call that 135 // will not get didExecute call. 136 m_currentNode = m_currentNode->parent(); 137 138 if (double headSelfTime = m_head->selfTime()) { 139 RefPtr<ProfileNode> idleNode = ProfileNode::create(0, CallIdentifier(NonJSExecution, String(), 0), m_head.get(), m_head.get()); 140 141 idleNode->setTotalTime(headSelfTime); 142 idleNode->setSelfTime(headSelfTime); 143 idleNode->setVisible(true); 144 145 m_head->setSelfTime(0.0); 146 m_head->addChild(idleNode.release()); 147 } 148} 149 150// The console.ProfileGenerator that started this ProfileGenerator will be the first child. 151void ProfileGenerator::removeProfileStart() 152{ 153 ProfileNode* currentNode = 0; 154 for (ProfileNode* next = m_head.get(); next; next = next->firstChild()) 155 currentNode = next; 156 157 if (currentNode->callIdentifier().m_name != "profile") 158 return; 159 160 // Attribute the time of the node aobut to be removed to the self time of its parent 161 currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime()); 162 currentNode->parent()->removeChild(currentNode); 163} 164 165// The console.ProfileGeneratorEnd that stopped this ProfileGenerator will be the last child. 166void ProfileGenerator::removeProfileEnd() 167{ 168 ProfileNode* currentNode = 0; 169 for (ProfileNode* next = m_head.get(); next; next = next->lastChild()) 170 currentNode = next; 171 172 if (currentNode->callIdentifier().m_name != "profileEnd") 173 return; 174 175 // Attribute the time of the node aobut to be removed to the self time of its parent 176 currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime()); 177 178 ASSERT(currentNode->callIdentifier() == (currentNode->parent()->children()[currentNode->parent()->children().size() - 1])->callIdentifier()); 179 currentNode->parent()->removeChild(currentNode); 180} 181 182} // namespace JSC 183