profiler/ProfileGenerator.cpp

   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 "JSGlobalObject.h"
  31 #include "JSStringRef.h"
  32 #include "JSFunction.h"
  33 #include "Interpreter.h"
  34 #include "Profile.h"
  35 #include "Profiler.h"
  36 #include "Tracing.h"
  37
  38 namespace JSC {
  39
  40 static const char* NonJSExecution = "(idle)";
  41
  42 PassRefPtr<ProfileGenerator> ProfileGenerator::create(const UString& title, ExecState* originatingExec, unsigned uid)
  43 {
  44     return adoptRef(new ProfileGenerator(title, originatingExec, uid));
  45 }
  46
  47 ProfileGenerator::ProfileGenerator(const UString& title, ExecState* originatingExec, unsigned uid)
  48     : m_originatingGlobalExec(originatingExec ? originatingExec->lexicalGlobalObject()->globalExec() : 0)
  49     , m_profileGroup(originatingExec ? originatingExec->lexicalGlobalObject()->profileGroup() : 0)
  50 {
  51     m_profile = Profile::create(title, uid);
  52     m_currentNode = m_head = m_profile->head();
  53     if (originatingExec)
  54         addParentForConsoleStart(originatingExec);
  55 }
  56
  57 void ProfileGenerator::addParentForConsoleStart(ExecState* exec)
  58 {
  59     int lineNumber;
  60     intptr_t sourceID;
  61     UString sourceURL;
  62     JSValuePtr function;
  63
  64     exec->interpreter()->retrieveLastCaller(exec, lineNumber, sourceID, sourceURL, function);
  65     m_currentNode = ProfileNode::create(Profiler::createCallIdentifier(&exec->globalData(), function ? function.toThisObject(exec) : 0, sourceURL, lineNumber), m_head.get(), m_head.get());
  66     m_head->insertNode(m_currentNode.get());
  67 }
  68
  69 const UString& ProfileGenerator::title() const
  70 {
  71     return m_profile->title();
  72 }
  73
  74 void ProfileGenerator::willExecute(const CallIdentifier& callIdentifier)
  75 {
  76     if (JAVASCRIPTCORE_PROFILE_WILL_EXECUTE_ENABLED()) {
  77         CString name = callIdentifier.m_name.UTF8String();
  78         CString url = callIdentifier.m_url.UTF8String();
  79         JAVASCRIPTCORE_PROFILE_WILL_EXECUTE(m_profileGroup, const_cast<char*>(name.c_str()), const_cast<char*>(url.c_str()), callIdentifier.m_lineNumber);
  80     }
  81
  82     if (!m_originatingGlobalExec)
  83         return;
  84
  85     ASSERT_ARG(m_currentNode, m_currentNode);
  86     m_currentNode = m_currentNode->willExecute(callIdentifier);
  87 }
  88
  89 void ProfileGenerator::didExecute(const CallIdentifier& callIdentifier)
  90 {
  91     if (JAVASCRIPTCORE_PROFILE_DID_EXECUTE_ENABLED()) {
  92         CString name = callIdentifier.m_name.UTF8String();
  93         CString url = callIdentifier.m_url.UTF8String();
  94         JAVASCRIPTCORE_PROFILE_DID_EXECUTE(m_profileGroup, const_cast<char*>(name.c_str()), const_cast<char*>(url.c_str()), callIdentifier.m_lineNumber);
  95     }
  96
  97     if (!m_originatingGlobalExec)
  98         return;
  99
 100     ASSERT_ARG(m_currentNode, m_currentNode);
 101     if (m_currentNode->callIdentifier() != callIdentifier) {
 102         RefPtr<ProfileNode> returningNode = ProfileNode::create(callIdentifier, m_head.get(), m_currentNode.get());
 103         returningNode->setStartTime(m_currentNode->startTime());
 104         returningNode->didExecute();
 105         m_currentNode->insertNode(returningNode.release());
 106         return;
 107     }
 108
 109     m_currentNode = m_currentNode->didExecute();
 110 }
 111
 112 void ProfileGenerator::stopProfiling()
 113 {
 114     m_profile->forEach(&ProfileNode::stopProfiling);
 115
 116     removeProfileStart();
 117     removeProfileEnd();
 118
 119     ASSERT_ARG(m_currentNode, m_currentNode);
 120
 121     // Set the current node to the parent, because we are in a call that
 122     // will not get didExecute call.
 123     m_currentNode = m_currentNode->parent();
 124
 125    if (double headSelfTime = m_head->selfTime()) {
 126         RefPtr<ProfileNode> idleNode = ProfileNode::create(CallIdentifier(NonJSExecution, 0, 0), m_head.get(), m_head.get());
 127
 128         idleNode->setTotalTime(headSelfTime);
 129         idleNode->setSelfTime(headSelfTime);
 130         idleNode->setVisible(true);
 131
 132         m_head->setSelfTime(0.0);
 133         m_head->addChild(idleNode.release());
 134     }
 135 }
 136
 137 // The console.ProfileGenerator that started this ProfileGenerator will be the first child.
 138 void ProfileGenerator::removeProfileStart()
 139 {
 140     ProfileNode* currentNode = 0;
 141     for (ProfileNode* next = m_head.get(); next; next = next->firstChild())
 142         currentNode = next;
 143
 144     if (currentNode->callIdentifier().m_name != "profile")
 145         return;
 146
 147     // Attribute the time of the node aobut to be removed to the self time of its parent
 148     currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime());
 149     currentNode->parent()->removeChild(currentNode);
 150 }
 151
 152 // The console.ProfileGeneratorEnd that stopped this ProfileGenerator will be the last child.
 153 void ProfileGenerator::removeProfileEnd()
 154 {
 155     ProfileNode* currentNode = 0;
 156     for (ProfileNode* next = m_head.get(); next; next = next->lastChild())
 157         currentNode = next;
 158
 159     if (currentNode->callIdentifier().m_name != "profileEnd")
 160         return;
 161
 162     // Attribute the time of the node aobut to be removed to the self time of its parent
 163     currentNode->parent()->setSelfTime(currentNode->parent()->selfTime() + currentNode->totalTime());
 164
 165     ASSERT(currentNode->callIdentifier() == (currentNode->parent()->children()[currentNode->parent()->children().size() - 1])->callIdentifier());
 166     currentNode->parent()->removeChild(currentNode);
 167 }
 168
 169 } // namespace JSC