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 54namespace __gnu_profile 55{ 56typedef const void* __object_t; 57typedef void* __instruction_address_t; 58typedef std::_GLIBCXX_STD_PR::vector<__instruction_address_t> __stack_npt; 59typedef __stack_npt* __stack_t; 60 61size_t __stack_max_depth(); 62 63inline __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 79inline __size(const __stack_t& __stack) 80{ 81 if (!__stack) { 82 return 0; 83 } else { 84 return __stack->size(); 85 } 86} 87 88inline 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. */ 101class __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. */ 130class __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 146inline __object_info_base::__object_info_base(__stack_t __stack) 147{ 148 _M_stack = __stack; 149 _M_valid = true; 150} 151 152inline __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. */ 159template<typename __object_info> 160class __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 */ 173