tools/CodeProfile.h

   1 /*
   2  * Copyright (C) 2012 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 #ifndef CodeProfile_h
  27 #define CodeProfile_h
  28
  29 #include "SourceCode.h"
  30 #include "TieredMMapArray.h"
  31 #include <wtf/text/CString.h>
  32
  33 namespace JSC {
  34
  35 class CodeProfile {
  36 public:
  37     CodeProfile(const SourceCode& source, CodeProfile* parent)
  38         : m_file(source.provider()->url().utf8())
  39         , m_lineNo(source.firstLine())
  40         , m_parent(parent)
  41     {
  42         if (parent)
  43             parent->addChild(this);
  44     }
  45
  46     void sample(void* pc, void** framePointer);
  47     void report();
  48
  49     CodeProfile* parent()
  50     {
  51         return m_parent;
  52     }
  53
  54     void addChild(CodeProfile* child)
  55     {
  56         m_children.append(adoptPtr(child));
  57     }
  58
  59 private:
  60     enum CodeType {
  61         EngineCode,
  62         GlobalThunk,
  63         RegExpCode,
  64         DFGJIT,
  65         BaselineOnly,
  66         BaselineProfile,
  67         BaselineOSR,
  68         EngineFrame,
  69         NumberOfCodeTypes
  70     };
  71     struct CodeRecord {
  72         CodeRecord(void* pc, CodeType type)
  73             : pc(pc)
  74             , type(type)
  75         {
  76         }
  77         void* pc;
  78         CodeType type;
  79     };
  80
  81     CString m_file;
  82     unsigned m_lineNo;
  83     CodeProfile* m_parent;
  84     Vector< OwnPtr<CodeProfile> > m_children;
  85     TieredMMapArray<CodeRecord> m_samples;
  86
  87     static const char* s_codeTypeNames[NumberOfCodeTypes];
  88 };
  89
  90 }
  91
  92 #endif // CodeProfile_h
  93