| // -*- 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_trace.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 |
| |
| #ifdef __GXX_EXPERIMENTAL_CXX0X__ |
| #include <cstdlib> |
| #include <cstdio> |
| #include <cstring> |
| #else |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #endif |
| #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() |
| :_M_longest_chain(0), _M_accesses(0), _M_hops(0) {} |
| __hashfunc_info(const __hashfunc_info& o); |
| __hashfunc_info(__stack_t __stack) |
| : __object_info_base(__stack), |
| _M_longest_chain(0), _M_accesses(0), _M_hops(0){} |
| virtual ~__hashfunc_info() {} |
| |
| void __merge(const __hashfunc_info& __o); |
| void __destruct(size_t __chain, size_t __accesses, size_t __hops); |
| void __write(FILE* __f) const; |
| float __magnitude() const { return static_cast<float>(_M_hops); } |
| const char* __advice() const { return strdup("change hash function"); } |
| |
| private: |
| size_t _M_longest_chain; |
| size_t _M_accesses; |
| size_t _M_hops; |
| }; |
| |
| inline __hashfunc_info::__hashfunc_info(const __hashfunc_info& __o) |
| : __object_info_base(__o) |
| { |
| _M_longest_chain = __o._M_longest_chain; |
| _M_accesses = __o._M_accesses; |
| _M_hops = __o._M_hops; |
| } |
| |
| inline void __hashfunc_info::__merge(const __hashfunc_info& __o) |
| { |
| _M_longest_chain = std::max(_M_longest_chain, __o._M_longest_chain); |
| _M_accesses += __o._M_accesses; |
| _M_hops += __o._M_hops; |
| } |
| |
| inline void __hashfunc_info::__destruct(size_t __chain, size_t __accesses, |
| size_t __hops) |
| { |
| _M_longest_chain = std::max(_M_longest_chain, __chain); |
| _M_accesses += __accesses; |
| _M_hops += __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_hash_func() {} |
| |
| // Insert a new node at construct with object, callstack and initial size. |
| void __insert(__object_t __obj, __stack_t __stack); |
| // Call at destruction/clean to set container final size. |
| void __destruct(const void* __obj, size_t __chain, |
| size_t __accesses, size_t __hops); |
| }; |
| |
| inline __trace_hash_func::__trace_hash_func() |
| : __trace_base<__hashfunc_info, __hashfunc_stack_info>() |
| { |
| __id = "hash-distr"; |
| } |
| |
| inline void __trace_hash_func::__insert(__object_t __obj, __stack_t __stack) |
| { |
| __add_object(__obj, __hashfunc_info(__stack)); |
| } |
| |
| inline void __hashfunc_info::__write(FILE* __f) const |
| { |
| fprintf(__f, "%Zu %Zu %Zu\n", _M_hops, _M_accesses, _M_longest_chain); |
| } |
| |
| inline void __trace_hash_func::__destruct(const void* __obj, size_t __chain, |
| size_t __accesses, size_t __hops) |
| { |
| if (!__is_on()) return; |
| |
| // First find the item from the live objects and update the informations. |
| __hashfunc_info* __objs = __get_object_info(__obj); |
| if (!__objs) |
| return; |
| |
| __objs->__destruct(__chain, __accesses, __hops); |
| __retire_object(__obj); |
| } |
| |
| inline void __trace_hash_func_init() |
| { |
| _GLIBCXX_PROFILE_DATA(_S_hash_func) = new __trace_hash_func(); |
| } |
| |
| inline void __trace_hash_func_report(FILE* __f, |
| __warning_vector_t& __warnings) |
| { |
| if (_GLIBCXX_PROFILE_DATA(_S_hash_func)) { |
| _GLIBCXX_PROFILE_DATA(_S_hash_func)->__collect_warnings(__warnings); |
| _GLIBCXX_PROFILE_DATA(_S_hash_func)->__write(__f); |
| } |
| } |
| |
| inline void __trace_hash_func_construct(const void* __obj) |
| { |
| if (!__profcxx_init()) return; |
| |
| _GLIBCXX_PROFILE_DATA(_S_hash_func)->__insert(__obj, __get_stack()); |
| } |
| |
| inline void __trace_hash_func_destruct(const void* __obj, size_t __chain, |
| size_t __accesses, size_t __hops) |
| { |
| if (!__profcxx_init()) return; |
| |
| _GLIBCXX_PROFILE_DATA(_S_hash_func)->__destruct(__obj, __chain, __accesses, |
| __hops); |
| } |
| |
| } // namespace __gnu_profile |
| #endif /* _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H */ |