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 Ref<Profile> Profile::create(const String& title, unsigned uid, double startTime)
  35 {
  36     return adoptRef(*new Profile(title, uid, startTime));
  37 }
  38
  39 Profile::Profile(const String& title, unsigned uid, double startTime)
  40     : m_title(title)
  41     , m_uid(uid)
  42 {
  43     // FIXME: When multi-threading is supported this will be a vector and calls
  44     // into the profiler will need to know which thread it is executing on.
  45     m_rootNode = ProfileNode::create(nullptr, CallIdentifier(ASCIILiteral("Thread_1"), String(), 0, 0), nullptr);
  46     m_rootNode->appendCall(ProfileNode::Call(startTime));
  47 }
  48
  49 Profile::~Profile()
  50 {
  51 }
  52
  53 #ifndef NDEBUG
  54 void Profile::debugPrint()
  55 {
  56     CalculateProfileSubtreeDataFunctor functor;
  57     m_rootNode->forEachNodePostorder(functor);
  58     ProfileNode::ProfileSubtreeData data = functor.returnValue();
  59
  60     dataLogF("Call graph:\n");
  61     m_rootNode->debugPrintRecursively(0, data);
  62 }
  63
  64 typedef WTF::KeyValuePair<FunctionCallHashCount::ValueType, unsigned> NameCountPair;
  65
  66 static inline bool functionNameCountPairComparator(const NameCountPair& a, const NameCountPair& b)
  67 {
  68     return a.value > b.value;
  69 }
  70
  71 void Profile::debugPrintSampleStyle()
  72 {
  73     typedef Vector<NameCountPair> NameCountPairVector;
  74
  75     CalculateProfileSubtreeDataFunctor functor;
  76     m_rootNode->forEachNodePostorder(functor);
  77     ProfileNode::ProfileSubtreeData data = functor.returnValue();
  78
  79     FunctionCallHashCount countedFunctions;
  80     dataLogF("Call graph:\n");
  81     m_rootNode->debugPrintSampleStyleRecursively(0, countedFunctions, data);
  82
  83     dataLogF("\nTotal number in stack:\n");
  84     NameCountPairVector sortedFunctions(countedFunctions.size());
  85     copyToVector(countedFunctions, sortedFunctions);
  86
  87     std::sort(sortedFunctions.begin(), sortedFunctions.end(), functionNameCountPairComparator);
  88     for (NameCountPairVector::iterator it = sortedFunctions.begin(); it != sortedFunctions.end(); ++it)
  89         dataLogF("        %-12d%s\n", (*it).value, String((*it).key).utf8().data());
  90
  91     dataLogF("\nSort by top of stack, same collapsed (when >= 5):\n");
  92 }
  93 #endif
  94
  95 } // namespace JSC