release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/include/c++/4.5.3/profile/impl/profiler_node.h

   1 // -*- C++ -*-
   2 //
   3 // Copyright (C) 2009 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 2, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING.  If not, write to
  18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19 // MA 02111-1307, USA.
  20
  21 // As a special exception, you may use this file as part of a free
  22 // software library without restriction.  Specifically, if other files
  23 // instantiate templates or use macros or inline functions from this
  24 // file, or you compile this file and link it with other files to
  25 // produce an executable, this file does not by itself cause the
  26 // resulting executable to be covered by the GNU General Public
  27 // License.  This exception does not however invalidate any other
  28 // reasons why the executable file might be covered by the GNU General
  29 // Public License.
  30
  31 /** @file profile/impl/profiler_node.h
  32  *  @brief Data structures to represent a single profiling event.
  33  */
  34
  35 // Written by Lixia Liu and Silvius Rus.
  36
  37 #ifndef _GLIBCXX_PROFILE_PROFILER_NODE_H
  38 #define _GLIBCXX_PROFILE_PROFILER_NODE_H 1
  39
  40 #ifdef __GXX_EXPERIMENTAL_CXX0X__
  41 #include <cstdio>
  42 #include <cstdint>
  43 #include <cstring>
  44 #else
  45 #include <stdio.h>
  46 #include <stdint.h>
  47 #include <string.h>
  48 #endif
  49 #include <vector>
  50 #if defined _GLIBCXX_HAVE_EXECINFO_H
  51 #include <execinfo.h>
  52 #endif
  53
  54 namespace __gnu_profile
  55 {
  56 typedef const void* __object_t;
  57 typedef void* __instruction_address_t;
  58 typedef std::_GLIBCXX_STD_PR::vector<__instruction_address_t> __stack_npt;
  59 typedef __stack_npt* __stack_t;
  60
  61 size_t __stack_max_depth();
  62
  63 inline __stack_t __get_stack()
  64 {
  65 #if defined _GLIBCXX_HAVE_EXECINFO_H
  66   size_t __max_depth = __stack_max_depth();
  67   if (__max_depth == 0)
  68     return NULL;
  69   __stack_npt __buffer(__max_depth);
  70   int __depth = backtrace(&__buffer[0], __max_depth);
  71   __stack_t __stack = new __stack_npt(__depth);
  72   memcpy(&(*__stack)[0], &__buffer[0], __depth * sizeof(__object_t));
  73   return __stack;
  74 #else
  75   return NULL;
  76 #endif
  77 }
  78
  79 inline __size(const __stack_t& __stack)
  80 {
  81   if (!__stack) {
  82     return 0;
  83   } else {
  84     return __stack->size();
  85   }
  86 }
  87
  88 inline void __write(FILE* __f, const __stack_t __stack)
  89 {
  90   if (!__stack) {
  91     return;
  92   }
  93
  94   __stack_npt::const_iterator __it;
  95   for (__it = __stack->begin(); __it != __stack->end(); ++__it) {
  96     fprintf(__f, "%p ", *__it);
  97   }
  98 }
  99
 100 /** @brief Hash function for summary trace using call stack as index.  */
 101 class __stack_hash
 102 {
 103  public:
 104   size_t operator()(const __stack_t __s) const
 105   {
 106     if (!__s) {
 107       return 0;
 108     }
 109
 110     uintptr_t __index = 0;
 111     __stack_npt::const_iterator __it;
 112     for (__it = __s->begin(); __it != __s->end(); ++__it) {
 113       __index += reinterpret_cast<uintptr_t>(*__it);
 114     }
 115     return __index;
 116   }
 117
 118   bool operator() (const __stack_t __stack1, const __stack_t __stack2) const
 119   {
 120     if (!__stack1 && !__stack2) return true;
 121     if (!__stack1 || !__stack2) return false;
 122     if (__stack1->size() != __stack2->size()) return false;
 123
 124     size_t __byte_size = __stack1->size() * sizeof(__stack_npt::value_type);
 125     return memcmp(&(*__stack1)[0], &(*__stack2)[0], __byte_size) == 0;
 126   }
 127 };
 128
 129 /** @brief Base class for a line in the object table.  */
 130 class __object_info_base
 131 {
 132  public:
 133   __object_info_base() {}
 134   __object_info_base(__stack_t __stack);
 135   __object_info_base(const __object_info_base& o);
 136   virtual ~__object_info_base() {}
 137   bool __is_valid() const { return _M_valid; }
 138   __stack_t __stack() const { return _M_stack; }
 139   virtual void __write(FILE* f) const = 0;
 140
 141  protected:
 142   __stack_t _M_stack;
 143   bool _M_valid;
 144 };
 145
 146 inline __object_info_base::__object_info_base(__stack_t __stack)
 147 {
 148   _M_stack = __stack;
 149   _M_valid = true;
 150 }
 151
 152 inline __object_info_base::__object_info_base(const __object_info_base& __o)
 153 {
 154   _M_stack = __o._M_stack;
 155   _M_valid = __o._M_valid;
 156 }
 157
 158 /** @brief Base class for a line in the stack table.  */
 159 template<typename __object_info>
 160 class __stack_info_base
 161 {
 162  public:
 163   __stack_info_base() {}
 164   __stack_info_base(const __object_info& __info) = 0;
 165   virtual ~__stack_info_base() {}
 166   void __merge(const __object_info& __info) = 0;
 167   virtual float __magnitude() const = 0;
 168   virtual const char* __get_id() const = 0;
 169 };
 170
 171 } // namespace __gnu_profile
 172 #endif /* _GLIBCXX_PROFILE_PROFILER_NODE_H */