profiler/Profile.cpp

   1 /*
   2  * Copyright (C) 2008, 2014 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 "Profile.h"
  28
  29 #include "ProfileNode.h"
  30 #include <wtf/DataLog.h>
  31
  32 namespace JSC {
  33
  34 PassRefPtr<Profile> Profile::create(const String& title, unsigned uid)
  35 {
  36     return adoptRef(new Profile(title, uid));
  37 }
  38
  39 Profile::Profile(const String& title, unsigned uid)
  40     : m_title(title)
  41     , m_uid(uid)
  42     , m_idleTime(0)
  43 {
  44     // FIXME: When multi-threading is supported this will be a vector and calls
  45     // into the profiler will need to know which thread it is executing on.
  46     m_head = ProfileNode::create(0, CallIdentifier("Thread_1", String(), 0, 0), 0, 0);
  47 }
  48
  49 Profile::~Profile()
  50 {
  51 }
  52
  53 void Profile::forEach(void (ProfileNode::*function)())
  54 {
  55     ProfileNode* currentNode = m_head->firstChild();
  56     for (ProfileNode* nextNode = currentNode; nextNode; nextNode = nextNode->firstChild())
  57         currentNode = nextNode;
  58
  59     if (!currentNode)
  60         currentNode = m_head.get();
  61
  62     ProfileNode* endNode = m_head->traverseNextNodePostOrder();
  63     while (currentNode && currentNode != endNode) {
  64         (currentNode->*function)();
  65         currentNode = currentNode->traverseNextNodePostOrder();
  66     }
  67 }
  68
  69 #ifndef NDEBUG
  70 void Profile::debugPrintData() const
  71 {
  72     dataLogF("Call graph:\n");
  73     m_head->debugPrintData(0);
  74 }
  75
  76 typedef WTF::KeyValuePair<FunctionCallHashCount::ValueType, unsigned> NameCountPair;
  77
  78 static inline bool functionNameCountPairComparator(const NameCountPair& a, const NameCountPair& b)
  79 {
  80     return a.value > b.value;
  81 }
  82
  83 void Profile::debugPrintDataSampleStyle() const
  84 {
  85     typedef Vector<NameCountPair> NameCountPairVector;
  86
  87     FunctionCallHashCount countedFunctions;
  88     dataLogF("Call graph:\n");
  89     m_head->debugPrintDataSampleStyle(0, countedFunctions);
  90
  91     dataLogF("\nTotal number in stack:\n");
  92     NameCountPairVector sortedFunctions(countedFunctions.size());
  93     copyToVector(countedFunctions, sortedFunctions);
  94
  95     std::sort(sortedFunctions.begin(), sortedFunctions.end(), functionNameCountPairComparator);
  96     for (NameCountPairVector::iterator it = sortedFunctions.begin(); it != sortedFunctions.end(); ++it)
  97         dataLogF("        %-12d%s\n", (*it).value, String((*it).key).utf8().data());
  98
  99     dataLogF("\nSort by top of stack, same collapsed (when >= 5):\n");
 100 }
 101 #endif
 102
 103 } // namespace JSC