2 // Testing performance utilities for the C++ library testsuite.
4 // Copyright (C) 2003 Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 2, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING. If not, write to the Free
19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
22 // As a special exception, you may use this file as part of a free software
23 // library without restriction. Specifically, if other files instantiate
24 // templates or use macros or inline functions from this file, or you compile
25 // this file and link it with other files to produce an executable, this
26 // file does not by itself cause the resulting executable to be covered by
27 // the GNU General Public License. This exception does not however
28 // invalidate any other reasons why the executable file might be covered by
29 // the GNU General Public License.
31 #ifndef _GLIBCPP_PERFORMANCE_H
32 #define _GLIBCPP_PERFORMANCE_H
34 #include <sys/times.h>
35 #include <sys/resource.h>
45 namespace __gnu_cxx_test
49 clock_t elapsed_begin;
63 memset(&tms_begin, 0, sizeof(tms));
64 memset(&tms_end, 0, sizeof(tms));
69 { elapsed_begin = times(&tms_begin); }
73 { elapsed_end = times(&tms_end); }
77 { return elapsed_end - elapsed_begin; }
81 { return tms_end.tms_utime - tms_begin.tms_utime; }
85 { return tms_end.tms_stime - tms_begin.tms_stime; }
89 struct mallinfo { int arena; };
90 int mallinfo (void) { return 0; }
93 class resource_counter
98 struct mallinfo allocation_begin;
99 struct mallinfo allocation_end;
102 resource_counter(int i = RUSAGE_SELF) : who(i)
108 memset(&rusage_begin, 0, sizeof(rusage_begin));
109 memset(&rusage_end, 0, sizeof(rusage_end));
110 memset(&allocation_begin, 0, sizeof(allocation_begin));
111 memset(&allocation_end, 0, sizeof(allocation_end));
117 if (getrusage(who, &rusage_begin) != 0 )
118 memset(&rusage_begin, 0, sizeof(rusage_begin));
119 // allocation_begin = mallinfo();
125 if (getrusage(who, &rusage_end) != 0 )
126 memset(&rusage_end, 0, sizeof(rusage_end));
127 // allocation_end = mallinfo();
131 allocated_memory() const
132 { return allocation_end.arena - allocation_begin.arena; }
135 hard_page_fault() const
136 { return rusage_end.ru_majflt - rusage_begin.ru_majflt; }
140 { return rusage_end.ru_nswap - rusage_begin.ru_nswap; }
144 start_counters(time_counter& t, resource_counter& r)
151 stop_counters(time_counter& t, resource_counter& r)
158 clear_counters(time_counter& t, resource_counter& r)
165 report_performance(const std::string file, const std::string comment,
166 const time_counter& t, const resource_counter& r)
168 const char space = ' ';
169 const char tab = '\t';
170 const char* name = "libstdc++-v3.performance";
171 std::string::const_iterator i = file.begin() + file.find_last_of('/') + 1;
172 std::string testname(i, file.end());
174 std::ofstream out(name, std::ios_base::app);
176 out.setf(std::ios_base::left);
177 out << std::setw(25) << testname << tab;
178 out << std::setw(10) << comment << tab;
180 out.setf(std::ios_base::right);
181 out << std::setw(4) << t.real_time() << "r" << space;
182 out << std::setw(4) << t.user_time() << "u" << space;
183 out << std::setw(4) << t.system_time() << "s" << space;
184 // out << std::setw(4) << r.allocated_memory() << "mem" << space;
185 out << std::setw(4) << r.hard_page_fault() << "pf" << space;
190 }; // namespace __gnu_cxx_test
192 #endif // _GLIBCPP_PERFORMANCE_H