release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/include/c++/4.5.3/profile/impl/profiler_hash_func.h

   1 // -*- C++ -*-
   2 //
   3 // Copyright (C) 2009, 2010 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 2, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING.  If not, write to
  18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19 // MA 02111-1307, USA.
  20
  21 // As a special exception, you may use this file as part of a free
  22 // software library without restriction.  Specifically, if other files
  23 // instantiate templates or use macros or inline functions from this
  24 // file, or you compile this file and link it with other files to
  25 // produce an executable, this file does not by itself cause the
  26 // resulting executable to be covered by the GNU General Public
  27 // License.  This exception does not however invalidate any other
  28 // reasons why the executable file might be covered by the GNU General
  29 // Public License.
  30
  31 /** @file profile/impl/profiler_trace.h
  32  *  @brief Data structures to represent profiling traces.
  33  */
  34
  35 // Written by Lixia Liu and Silvius Rus.
  36
  37 #ifndef _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H
  38 #define _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H 1
  39
  40 #ifdef __GXX_EXPERIMENTAL_CXX0X__
  41 #include <cstdlib>
  42 #include <cstdio>
  43 #include <cstring>
  44 #else
  45 #include <stdlib.h>
  46 #include <stdio.h>
  47 #include <string.h>
  48 #endif
  49 #include "profile/impl/profiler.h"
  50 #include "profile/impl/profiler_node.h"
  51 #include "profile/impl/profiler_trace.h"
  52
  53 namespace __gnu_profile
  54 {
  55
  56 /** @brief A hash performance instrumentation line in the object table.  */
  57 class __hashfunc_info: public __object_info_base
  58 {
  59  public:
  60   __hashfunc_info()
  61       :_M_longest_chain(0), _M_accesses(0), _M_hops(0) {}
  62   __hashfunc_info(const __hashfunc_info& o);
  63   __hashfunc_info(__stack_t __stack)
  64       : __object_info_base(__stack),
  65         _M_longest_chain(0), _M_accesses(0), _M_hops(0){}
  66   virtual ~__hashfunc_info() {}
  67
  68   void __merge(const __hashfunc_info& __o);
  69   void __destruct(size_t __chain, size_t __accesses, size_t __hops);
  70   void __write(FILE* __f) const;
  71   float __magnitude() const { return static_cast<float>(_M_hops); }
  72   const char* __advice() const { return strdup("change hash function"); }
  73
  74 private:
  75   size_t _M_longest_chain;
  76   size_t _M_accesses;
  77   size_t _M_hops;
  78 };
  79
  80 inline __hashfunc_info::__hashfunc_info(const __hashfunc_info& __o)
  81     : __object_info_base(__o)
  82 {
  83   _M_longest_chain = __o._M_longest_chain;
  84   _M_accesses      = __o._M_accesses;
  85   _M_hops          = __o._M_hops;
  86 }
  87
  88 inline void __hashfunc_info::__merge(const __hashfunc_info& __o)
  89 {
  90   _M_longest_chain  = std::max(_M_longest_chain, __o._M_longest_chain);
  91   _M_accesses      += __o._M_accesses;
  92   _M_hops          += __o._M_hops;
  93 }
  94
  95 inline void __hashfunc_info::__destruct(size_t __chain, size_t __accesses,
  96                                         size_t __hops)
  97 {
  98   _M_longest_chain  = std::max(_M_longest_chain, __chain);
  99   _M_accesses      += __accesses;
 100   _M_hops          += __hops;
 101 }
 102
 103 /** @brief A hash performance instrumentation line in the stack table.  */
 104 class __hashfunc_stack_info: public __hashfunc_info {
 105  public:
 106   __hashfunc_stack_info(const __hashfunc_info& __o) : __hashfunc_info(__o) {}
 107 };
 108
 109 /** @brief Hash performance instrumentation producer.  */
 110 class __trace_hash_func
 111     : public __trace_base<__hashfunc_info, __hashfunc_stack_info>
 112 {
 113  public:
 114   __trace_hash_func();
 115   ~__trace_hash_func() {}
 116
 117   // Insert a new node at construct with object, callstack and initial size.
 118   void __insert(__object_t __obj, __stack_t __stack);
 119   // Call at destruction/clean to set container final size.
 120   void __destruct(const void* __obj, size_t __chain,
 121                   size_t __accesses, size_t __hops);
 122 };
 123
 124 inline __trace_hash_func::__trace_hash_func()
 125     : __trace_base<__hashfunc_info, __hashfunc_stack_info>()
 126 {
 127   __id = "hash-distr";
 128 }
 129
 130 inline void __trace_hash_func::__insert(__object_t __obj, __stack_t __stack)
 131 {
 132   __add_object(__obj, __hashfunc_info(__stack));
 133 }
 134
 135 inline void __hashfunc_info::__write(FILE* __f) const
 136 {
 137   fprintf(__f, "%Zu %Zu %Zu\n", _M_hops, _M_accesses, _M_longest_chain);
 138 }
 139
 140 inline void __trace_hash_func::__destruct(const void* __obj, size_t __chain,
 141                                           size_t __accesses, size_t __hops)
 142 {
 143   if (!__is_on()) return;
 144
 145   // First find the item from the live objects and update the informations.
 146   __hashfunc_info* __objs = __get_object_info(__obj);
 147   if (!__objs)
 148     return;
 149
 150   __objs->__destruct(__chain, __accesses, __hops);
 151   __retire_object(__obj);
 152 }
 153
 154 inline void __trace_hash_func_init()
 155 {
 156   _GLIBCXX_PROFILE_DATA(_S_hash_func) = new __trace_hash_func();
 157 }
 158
 159 inline void __trace_hash_func_report(FILE* __f,
 160                                      __warning_vector_t& __warnings)
 161 {
 162   if (_GLIBCXX_PROFILE_DATA(_S_hash_func)) {
 163     _GLIBCXX_PROFILE_DATA(_S_hash_func)->__collect_warnings(__warnings);
 164     _GLIBCXX_PROFILE_DATA(_S_hash_func)->__write(__f);
 165   }
 166 }
 167
 168 inline void __trace_hash_func_construct(const void* __obj)
 169 {
 170   if (!__profcxx_init()) return;
 171
 172   _GLIBCXX_PROFILE_DATA(_S_hash_func)->__insert(__obj, __get_stack());
 173 }
 174
 175 inline void __trace_hash_func_destruct(const void* __obj, size_t __chain,
 176                                        size_t __accesses, size_t __hops)
 177 {
 178   if (!__profcxx_init()) return;
 179
 180   _GLIBCXX_PROFILE_DATA(_S_hash_func)->__destruct(__obj, __chain, __accesses,
 181                                                   __hops);
 182 }
 183
 184 } // namespace __gnu_profile
 185 #endif /* _GLIBCXX_PROFILE_PROFILER_HASH_FUNC_H */