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// -*- C++ -*- |
// |
// Copyright (C) 2009-2013 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 |
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#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; |
|
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; |
} |
}; |
|
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/** @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) { } |
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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; |
}; |
|
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/** @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 */ |