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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libstdc++-v3/] [include/] [profile/] [impl/] [profiler_node.h] - Blame information for rev 742

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1 742 jeremybenn
// -*- C++ -*-
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//
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// Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library.  This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3.  If not see
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// <http://www.gnu.org/licenses/>.
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/** @file profile/impl/profiler_node.h
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 *  @brief Data structures to represent a single profiling event.
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 */
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// Written by Lixia Liu and Silvius Rus.
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#ifndef _GLIBCXX_PROFILE_PROFILER_NODE_H
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#define _GLIBCXX_PROFILE_PROFILER_NODE_H 1
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#include <cstdio> // FILE, fprintf
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#include <vector>
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#if defined _GLIBCXX_HAVE_EXECINFO_H
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#include <execinfo.h>
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#endif
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namespace __gnu_profile
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{
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  typedef const void* __object_t;
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  typedef void* __instruction_address_t;
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  typedef std::_GLIBCXX_STD_C::vector<__instruction_address_t> __stack_npt;
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  typedef __stack_npt* __stack_t;
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  std::size_t __stack_max_depth();
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  inline __stack_t
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  __get_stack()
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  {
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#if defined _GLIBCXX_HAVE_EXECINFO_H
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    std::size_t __max_depth = __stack_max_depth();
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    if (__max_depth == 0)
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      return 0;
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    __stack_npt __buffer(__max_depth);
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    int __depth = backtrace(&__buffer[0], __max_depth);
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    __stack_t __stack = new __stack_npt(__depth);
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    __builtin_memcpy(&(*__stack)[0], &__buffer[0],
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                     __depth * sizeof(__object_t));
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    return __stack;
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#else
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    return 0;
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#endif
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  }
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  inline std::size_t
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  __size(__stack_t __stack)
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  {
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    if (!__stack)
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      return 0;
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    else
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      return __stack->size();
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  }
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  // XXX
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  inline void
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  __write(FILE* __f, __stack_t __stack)
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  {
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    if (!__stack)
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      return;
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    __stack_npt::const_iterator __it;
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    for (__it = __stack->begin(); __it != __stack->end(); ++__it)
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      std::fprintf(__f, "%p ", *__it);
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  }
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  /** @brief Hash function for summary trace using call stack as index.  */
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  class __stack_hash
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  {
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  public:
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    std::size_t
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    operator()(__stack_t __s) const
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    {
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      if (!__s)
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        return 0;
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      std::size_t __index = 0;
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      __stack_npt::const_iterator __it;
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      for (__it = __s->begin(); __it != __s->end(); ++__it)
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        __index += reinterpret_cast<std::size_t>(*__it);
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      return __index;
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    }
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    bool operator() (__stack_t __stack1, __stack_t __stack2) const
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    {
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      if (!__stack1 && !__stack2)
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        return true;
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      if (!__stack1 || !__stack2)
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        return false;
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      if (__stack1->size() != __stack2->size())
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        return false;
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      std::size_t __byte_size
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        = __stack1->size() * sizeof(__stack_npt::value_type);
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      return __builtin_memcmp(&(*__stack1)[0], &(*__stack2)[0],
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                              __byte_size) == 0;
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    }
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  };
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  /** @brief Base class for a line in the object table.  */
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  class __object_info_base
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  {
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  public:
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    __object_info_base() { }
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    __object_info_base(__stack_t __stack)
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    : _M_stack(__stack), _M_valid(true) { }
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    __object_info_base(const __object_info_base& __o)
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    : _M_stack(__o._M_stack), _M_valid(__o._M_valid) { }
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    virtual ~__object_info_base() { }
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    bool
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    __is_valid() const
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    { return _M_valid; }
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    __stack_t
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    __stack() const
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    { return _M_stack; }
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    virtual void __write(FILE* __f) const = 0;
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  protected:
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    __stack_t _M_stack;
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    bool _M_valid;
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  };
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  /** @brief Base class for a line in the stack table.  */
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  template<typename __object_info>
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    class __stack_info_base
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    {
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    public:
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      __stack_info_base() { }
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      __stack_info_base(const __object_info& __info) = 0;
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      virtual ~__stack_info_base() {}
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      void __merge(const __object_info& __info) = 0;
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      virtual float __magnitude() const = 0;
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      virtual const char* __get_id() const = 0;
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    };
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} // namespace __gnu_profile
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#endif /* _GLIBCXX_PROFILE_PROFILER_NODE_H */

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