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     WTF_MAKE_FAST_ALLOCATED;
  37 public:
  38     CodeProfile(const SourceCode& source, CodeProfile* parent)
  39         : m_file(source.provider()->url().utf8())
  40         , m_lineNo(source.firstLine())
  41         , m_parent(parent)
  42     {
  43         if (parent)
  44             parent->addChild(this);
  45     }
  46
  47     void sample(void* pc, void** framePointer);
  48     void report();
  49
  50     CodeProfile* parent()
  51     {
  52         return m_parent;
  53     }
  54
  55     void addChild(CodeProfile* child)
  56     {
  57         m_children.append(adoptPtr(child));
  58     }
  59
  60 private:
  61     enum CodeType {
  62         EngineCode,
  63         GlobalThunk,
  64         RegExpCode,
  65         DFGJIT,
  66         BaselineOnly,
  67         BaselineProfile,
  68         BaselineOSR,
  69         EngineFrame,
  70         NumberOfCodeTypes
  71     };
  72     struct CodeRecord {
  73         CodeRecord(void* pc, CodeType type)
  74             : pc(pc)
  75             , type(type)
  76         {
  77         }
  78         void* pc;
  79         CodeType type;
  80     };
  81
  82     CString m_file;
  83     unsigned m_lineNo;
  84     CodeProfile* m_parent;
  85     Vector< OwnPtr<CodeProfile>> m_children;
  86     TieredMMapArray<CodeRecord> m_samples;
  87
  88     static const char* s_codeTypeNames[NumberOfCodeTypes];
  89 };
  90
  91 }
  92
  93 #endif // CodeProfile_h
  94