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 "Profile.h" 36 #include "Profiler.h" 37 #include "Tracing.h" 38 39 namespace JSC { 40 41 static const char* NonJSExecution = "(idle)"; 42 43 PassRefPtr<ProfileGenerator> ProfileGenerator::create(ExecState* exec, const UString& title, unsigned uid) 44 { 45 return adoptRef(new ProfileGenerator(exec, title, uid)); 46 } 47 48 ProfileGenerator::ProfileGenerator(ExecState* exec, const UString& title, unsigned uid) 49 : m_origin(exec ? exec->lexicalGlobalObject() : 0) 50 , m_profileGroup(exec ? exec->lexicalGlobalObject()->profileGroup() : 0) 51 { 52 m_profile = Profile::create(title, uid); 53 m_currentNode = m_head = m_profile->head(); 54 if (exec) 55 addParentForConsoleStart(exec); 56 } 57 58 void ProfileGenerator::addParentForConsoleStart(ExecState* exec) 59 { 60 int lineNumber; 61 intptr_t sourceID; 62 UString sourceURL; 63 JSValue function; 64 65 exec->interpreter()->retrieveLastCaller(exec, lineNumber, sourceID, sourceURL, function); 66 m_currentNode = ProfileNode::create(exec, Profiler::createCallIdentifier(exec, function ? function.toThisObject(exec) : 0, sourceURL, lineNumber), m_head.get(), m_head.get()); 67 m_head->insertNode(m_currentNode.get()); 68 } 69 70 const UString& ProfileGenerator::title() const 71 { 72 return m_profile->title(); 73 } 74 75 void ProfileGenerator::willExecute(ExecState* callerCallFrame, const CallIdentifier& callIdentifier) 76 { 77 if (JAVASCRIPTCORE_PROFILE_WILL_EXECUTE_ENABLED()) { 78 CString name = callIdentifier.m_name.utf8(); 79 CString url = callIdentifier.m_url.utf8(); 80 JAVASCRIPTCORE_PROFILE_WILL_EXECUTE(m_profileGroup, const_cast<char*>(name.data()), const_cast<char*>(url.data()), callIdentifier.m_lineNumber); 81 } 82 83 if (!m_origin) 84 return; 85 86 ASSERT(m_currentNode); 87 m_currentNode = m_currentNode->willExecute(callerCallFrame, callIdentifier); 88 } 89 90 void ProfileGenerator::didExecute(ExecState* callerCallFrame, const CallIdentifier& callIdentifier) 91 { 92 if (JAVASCRIPTCORE_PROFILE_DID_EXECUTE_ENABLED()) { 93 CString name = callIdentifier.m_name.utf8(); 94 CString url = callIdentifier.m_url.utf8(); 95 JAVASCRIPTCORE_PROFILE_DID_EXECUTE(m_profileGroup, const_cast<char*>(name.data()), const_cast<char*>(url.data()), callIdentifier.m_lineNumber); 96 } 97 98 if (!m_origin) 99 return; 100 101 ASSERT(m_currentNode); 102 if (m_currentNode->callIdentifier() != callIdentifier) { 103 RefPtr<ProfileNode> returningNode = ProfileNode::create(callerCallFrame, callIdentifier, m_head.get(), m_currentNode.get()); 104 returningNode->setStartTime(m_currentNode->startTime()); 105 returningNode->didExecute(); 106 m_currentNode->insertNode(returningNode.release()); 107 return; 108 } 109 110 m_currentNode = m_currentNode->didExecute(); 111 } 112 113 void ProfileGenerator::exceptionUnwind(ExecState* handlerCallFrame, const CallIdentifier&) 114 { 115 // If the current node was called by the handler (==) or any 116 // more nested function (>) the we have exited early from it. 117 ASSERT(m_currentNode); 118 while (m_currentNode->callerCallFrame() >= handlerCallFrame) { 119 didExecute(m_currentNode->callerCallFrame(), m_currentNode->callIdentifier()); 120 ASSERT(m_currentNode); 121 } 122 } 123 124 void ProfileGenerator::stopProfiling() 125 { 126 m_profile->forEach(&ProfileNode::stopProfiling); 127 128 removeProfileStart(); 129 removeProfileEnd(); 130 131 ASSERT(m_currentNode); 132 133 // Set the current node to the parent, because we are in a call that 134 // will not get didExecute call. 135 m_currentNode = m_currentNode->parent(); 136 137 if (double headSelfTime = m_head->selfTime()) { 138 RefPtr<ProfileNode> idleNode = ProfileNode::create(0, CallIdentifier(NonJSExecution, UString(), 0), m_head.get(), m_head.get()); 139 140 idleNode->setTotalTime(headSelfTime); 141 idleNode->setSelfTime(headSelfTime); 142 idleNode->setVisible(true); 143 144 m_head->setSelfTime(0.0); 145 m_head->addChild(idleNode.release()); 146 } 147 } 148 149 // The console.ProfileGenerator that started this ProfileGenerator will be the first child. 150 void ProfileGenerator::removeProfileStart() 151 { 152 ProfileNode* currentNode = 0; 153 for (ProfileNode* next = m_head.get(); next; next = next->firstChild()) 154 currentNode = next; 155 156 if (currentNode->callIdentifier().m_name != "profile") 157 return; 158 159 // Attribute the time of the node aobut to be removed to the self time of its parent 160 currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime()); 161 currentNode->parent()->removeChild(currentNode); 162 } 163 164 // The console.ProfileGeneratorEnd that stopped this ProfileGenerator will be the last child. 165 void ProfileGenerator::removeProfileEnd() 166 { 167 ProfileNode* currentNode = 0; 168 for (ProfileNode* next = m_head.get(); next; next = next->lastChild()) 169 currentNode = next; 170 171 if (currentNode->callIdentifier().m_name != "profileEnd") 172 return; 173 174 // Attribute the time of the node aobut to be removed to the self time of its parent 175 currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime()); 176 177 ASSERT(currentNode->callIdentifier() == (currentNode->parent()->children()[currentNode->parent()->children().size() - 1])->callIdentifier()); 178 currentNode->parent()->removeChild(currentNode); 179 } 180 181 } // namespace JSC 182
