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// -*- C++ -*- |
// |
// Copyright (C) 2009-2015 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_hash_func.h |
* @brief Data structures to represent profiling traces. |
*/ |
|
// Written by Lixia Liu and Silvius Rus. |
|
#ifndef _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H |
#define _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H 1 |
|
#include "profile/impl/profiler.h" |
#include "profile/impl/profiler_node.h" |
#include "profile/impl/profiler_trace.h" |
|
namespace __gnu_profile |
{ |
/** @brief A hash performance instrumentation line in the object table. */ |
class __hashfunc_info |
: public __object_info_base |
{ |
public: |
__hashfunc_info(__stack_t __stack) |
: __object_info_base(__stack), _M_longest_chain(0), |
_M_accesses(0), _M_hops(0) { } |
|
void |
__merge(const __hashfunc_info& __o) |
{ |
__object_info_base::__merge(__o); |
_M_longest_chain = std::max(_M_longest_chain, __o._M_longest_chain); |
_M_accesses += __o._M_accesses; |
_M_hops += __o._M_hops; |
} |
|
void |
__destruct(std::size_t __chain, std::size_t __accesses, |
std::size_t __hops) |
{ |
_M_longest_chain = std::max(_M_longest_chain, __chain); |
_M_accesses += __accesses; |
_M_hops += __hops; |
} |
|
void |
__write(FILE* __f) const |
{ std::fprintf(__f, "%Zu %Zu %Zu\n", _M_hops, |
_M_accesses, _M_longest_chain); } |
|
float |
__magnitude() const |
{ return static_cast<float>(_M_hops); } |
|
std::string |
__advice() const |
{ return "change hash function"; } |
|
private: |
std::size_t _M_longest_chain; |
std::size_t _M_accesses; |
std::size_t _M_hops; |
}; |
|
/** @brief A hash performance instrumentation line in the stack table. */ |
class __hashfunc_stack_info |
: public __hashfunc_info |
{ |
public: |
__hashfunc_stack_info(const __hashfunc_info& __o) |
: __hashfunc_info(__o) { } |
}; |
|
/** @brief Hash performance instrumentation producer. */ |
class __trace_hash_func |
: public __trace_base<__hashfunc_info, __hashfunc_stack_info> |
{ |
public: |
__trace_hash_func() |
: __trace_base<__hashfunc_info, __hashfunc_stack_info>() |
{ __id = "hash-distr"; } |
|
~__trace_hash_func() {} |
|
// Call at destruction/clean to set container final size. |
void |
__destruct(__hashfunc_info* __obj_info, |
std::size_t __chain, std::size_t __accesses, std::size_t __hops) |
{ |
if (!__obj_info) |
return; |
|
__obj_info->__destruct(__chain, __accesses, __hops); |
__retire_object(__obj_info); |
} |
}; |
|
inline void |
__trace_hash_func_init() |
{ _GLIBCXX_PROFILE_DATA(_S_hash_func) = new __trace_hash_func(); } |
|
inline void |
__trace_hash_func_free() |
{ delete _GLIBCXX_PROFILE_DATA(_S_hash_func); } |
|
inline void |
__trace_hash_func_report(FILE* __f, __warning_vector_t& __warnings) |
{ __trace_report(_GLIBCXX_PROFILE_DATA(_S_hash_func), __f, __warnings); } |
|
inline __hashfunc_info* |
__trace_hash_func_construct() |
{ |
if (!__profcxx_init()) |
return 0; |
|
if (!__reentrance_guard::__get_in()) |
return 0; |
|
__reentrance_guard __get_out; |
return _GLIBCXX_PROFILE_DATA(_S_hash_func)->__add_object(__get_stack()); |
} |
|
inline void |
__trace_hash_func_destruct(__hashfunc_info* __obj_info, |
std::size_t __chain, std::size_t __accesses, |
std::size_t __hops) |
{ |
_GLIBCXX_PROFILE_DATA(_S_hash_func)->__destruct(__obj_info, __chain, |
__accesses, __hops); |
} |
|
} // namespace __gnu_profile |
#endif /* _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H */ |