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/
usr/
include/
c++/
4.6/
profile/
impl/
- drwxr-xr-x
|
Viewing file:  profiler_node.h (4.68 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
// -*- C++ -*-
//
// Copyright (C) 2009, 2010 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 2, 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.
// You should have received a copy of the GNU General Public License
// along with this library; see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
// MA 02111-1307, USA.
// As a special exception, you may use this file as part of a free
// software library without restriction. Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to
// produce an executable, this file does not by itself cause the
// resulting executable to be covered by the GNU General Public
// License. This exception does not however invalidate any other
// reasons why the executable file might be covered by the GNU General
// Public License.
/** @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 const void* __object_t;
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
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);
__stack_t __stack = new __stack_npt(__depth);
__builtin_memcpy(&(*__stack)[0], &__buffer[0],
__depth * sizeof(__object_t));
return __stack;
#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;
__UINTPTR_TYPE__ __index = 0;
__stack_npt::const_iterator __it;
for (__it = __s->begin(); __it != __s->end(); ++__it)
__index += reinterpret_cast<__UINTPTR_TYPE__>(*__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() { }
__object_info_base(__stack_t __stack)
: _M_stack(__stack), _M_valid(true) { }
__object_info_base(const __object_info_base& __o)
: _M_stack(__o._M_stack), _M_valid(__o._M_valid) { }
virtual ~__object_info_base() { }
bool
__is_valid() const
{ return _M_valid; }
__stack_t
__stack() const
{ return _M_stack; }
virtual void __write(FILE* __f) const = 0;
protected:
__stack_t _M_stack;
bool _M_valid;
};
/** @brief Base class for a line in the stack table. */
template<typename __object_info>
class __stack_info_base
{
public:
__stack_info_base() { }
__stack_info_base(const __object_info& __info) = 0;
virtual ~__stack_info_base() {}
void __merge(const __object_info& __info) = 0;
virtual float __magnitude() const = 0;
virtual const char* __get_id() const = 0;
};
} // namespace __gnu_profile
#endif /* _GLIBCXX_PROFILE_PROFILER_NODE_H */
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