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Edit File : profiler_node.h \| Size : 3.71 KB
// -- C++ -- // // Copyright (C) 2009-2018 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // <http://www.gnu.org/licenses/>. /** @file profile/impl/profiler_node.h * @brief Data structures to represent a single profiling event. / // Written by Lixia Liu and Silvius Rus. #ifndef _GLIBCXX_PROFILE_PROFILER_NODE_H #define _GLIBCXX_PROFILE_PROFILER_NODE_H 1 #include <cstdio> // FILE, fprintf #include <vector> #if defined _GLIBCXX_HAVE_EXECINFO_H #include <execinfo.h> #endif namespace __gnu_profile { typedef void __instruction_address_t; typedef std::_GLIBCXX_STD_C::vector<__instruction_address_t> __stack_npt; typedef __stack_npt* __stack_t; std::size_t __stack_max_depth(); inline __stack_t __get_stack() { #if defined _GLIBCXX_HAVE_EXECINFO_H __try { std::size_t __max_depth = __stack_max_depth(); if (__max_depth == 0) return 0; __stack_npt __buffer(__max_depth); int __depth = backtrace(&__buffer[0], __max_depth); return new(std::nothrow) __stack_npt(__buffer.begin(), __buffer.begin() + __depth); } __catch(...) { return 0; } #else return 0; #endif } inline std::size_t __size(__stack_t __stack) { if (!__stack) return 0; else return __stack->size(); } // XXX inline void __write(FILE* __f, __stack_t __stack) { if (!__stack) return; __stack_npt::const_iterator __it; for (__it = __stack->begin(); __it != __stack->end(); ++__it) std::fprintf(__f, "%p ", __it); } /* @brief Hash function for summary trace using call stack as index. / class __stack_hash { public: std::size_t operator()(__stack_t __s) const { if (!__s) return 0; std::size_t __index = 0; __stack_npt::const_iterator __it; for (__it = __s->begin(); __it != __s->end(); ++__it) __index += reinterpret_cast<std::size_t>(__it); return __index; } bool operator() (__stack_t __stack1, __stack_t __stack2) const { if (!__stack1 && !__stack2) return true; if (!__stack1 \|\| !__stack2) return false; if (__stack1->size() != __stack2->size()) return false; std::size_t __byte_size = __stack1->size() * sizeof(__stack_npt::value_type); return __builtin_memcmp(&(__stack1)[0], &(__stack2)[0], __byte_size) == 0; } }; /** @brief Base class for a line in the object table. / class __object_info_base { public: __object_info_base(__stack_t __stack) : _M_stack(__stack), _M_valid(true) { } bool __is_valid() const { return _M_valid; } void __set_invalid() { _M_valid = false; } void __merge(const __object_info_base& __o) { _M_valid &= __o._M_valid; } __stack_t __stack() const { return _M_stack; } protected: __stack_t _M_stack; bool _M_valid; }; } // namespace __gnu_profile #endif / _GLIBCXX_PROFILE_PROFILER_NODE_H */ Back

Edit File : profiler_node.h | Size : 3.71 KB

// -*- C++ -*-
//
// Copyright (C) 2009-2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3.  If not see
// <http://www.gnu.org/licenses/>.

/** @file profile/impl/profiler_node.h
 *  @brief Data structures to represent a single profiling event.
 */

// Written by Lixia Liu and Silvius Rus.

#ifndef _GLIBCXX_PROFILE_PROFILER_NODE_H
#define _GLIBCXX_PROFILE_PROFILER_NODE_H 1

#include <cstdio> // FILE, fprintf

#include <vector>
#if defined _GLIBCXX_HAVE_EXECINFO_H
#include <execinfo.h>
#endif

namespace __gnu_profile
{
  typedef void* __instruction_address_t;
  typedef std::_GLIBCXX_STD_C::vector<__instruction_address_t> __stack_npt;
  typedef __stack_npt* __stack_t;

std::size_t __stack_max_depth();

inline __stack_t
  __get_stack()
  {
#if defined _GLIBCXX_HAVE_EXECINFO_H
    __try
      {
	std::size_t __max_depth = __stack_max_depth();
	if (__max_depth == 0)
	  return 0;
	__stack_npt __buffer(__max_depth);
	int __depth = backtrace(&__buffer[0], __max_depth);
	return new(std::nothrow) __stack_npt(__buffer.begin(),
					     __buffer.begin() + __depth);
      }
    __catch(...)
      {
	return 0;
      }
#else
    return 0;
#endif
  }

inline std::size_t
  __size(__stack_t __stack)
  {
    if (!__stack)
      return 0;
    else
      return __stack->size();
  }

// XXX
  inline void
  __write(FILE* __f, __stack_t __stack)
  {
    if (!__stack)
      return;
  
    __stack_npt::const_iterator __it;
    for (__it = __stack->begin(); __it != __stack->end(); ++__it)
      std::fprintf(__f, "%p ", *__it);
  }

/** @brief Hash function for summary trace using call stack as index.  */
  class __stack_hash 
  {
  public:
    std::size_t
    operator()(__stack_t __s) const
    {
      if (!__s) 
	return 0;

std::size_t __index = 0;
      __stack_npt::const_iterator __it;
      for (__it = __s->begin(); __it != __s->end(); ++__it)
	__index += reinterpret_cast<std::size_t>(*__it);
      return __index;
    }

bool operator() (__stack_t __stack1, __stack_t __stack2) const
    {
      if (!__stack1 && !__stack2)
	return true;
      if (!__stack1 || !__stack2)
	return false;
      if (__stack1->size() != __stack2->size())
	return false;

std::size_t __byte_size
	= __stack1->size() * sizeof(__stack_npt::value_type);
      return __builtin_memcmp(&(*__stack1)[0], &(*__stack2)[0],
			      __byte_size) == 0;
    }
  };

/** @brief Base class for a line in the object table.  */
  class __object_info_base
  {
  public:
    __object_info_base(__stack_t __stack)
    : _M_stack(__stack), _M_valid(true) { }

bool
    __is_valid() const 
    { return _M_valid; }
    
    void
    __set_invalid()
    { _M_valid = false; }

void
    __merge(const __object_info_base& __o)
    { _M_valid &= __o._M_valid; }

__stack_t
    __stack() const
    { return _M_stack; }
    
  protected:
    __stack_t _M_stack;
    bool _M_valid;
  };

} // namespace __gnu_profile
#endif /* _GLIBCXX_PROFILE_PROFILER_NODE_H */

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