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