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>
41 namespace __gnu_cxx_test
45 clock_t elapsed_begin
;
59 memset(&tms_begin
, 0, sizeof(tms
));
60 memset(&tms_end
, 0, sizeof(tms
));
65 { elapsed_begin
= times(&tms_begin
); }
69 { elapsed_end
= times(&tms_end
); }
73 { return elapsed_end
- elapsed_begin
; }
77 { return tms_end
.tms_utime
- tms_begin
.tms_utime
; }
81 { return tms_end
.tms_stime
- tms_begin
.tms_stime
; }
84 class resource_counter
89 struct mallinfo allocation_begin
;
90 struct mallinfo allocation_end
;
93 resource_counter(int i
= RUSAGE_SELF
) : who(i
)
99 memset(&rusage_begin
, 0, sizeof(rusage_begin
));
100 memset(&rusage_end
, 0, sizeof(rusage_end
));
101 memset(&allocation_begin
, 0, sizeof(allocation_begin
));
102 memset(&allocation_end
, 0, sizeof(allocation_end
));
108 if (getrusage(who
, &rusage_begin
) != 0 )
109 memset(&rusage_begin
, 0, sizeof(rusage_begin
));
110 // allocation_begin = mallinfo();
116 if (getrusage(who
, &rusage_end
) != 0 )
117 memset(&rusage_end
, 0, sizeof(rusage_end
));
118 // allocation_end = mallinfo();
122 allocated_memory() const
123 { return allocation_end
.arena
- allocation_begin
.arena
; }
126 hard_page_fault() const
127 { return rusage_end
.ru_majflt
- rusage_begin
.ru_majflt
; }
131 { return rusage_end
.ru_nswap
- rusage_begin
.ru_nswap
; }
135 start_counters(time_counter
& t
, resource_counter
& r
)
142 stop_counters(time_counter
& t
, resource_counter
& r
)
149 clear_counters(time_counter
& t
, resource_counter
& r
)
156 report_performance(const std::string file
, const std::string comment
,
157 const time_counter
& t
, const resource_counter
& r
)
159 const char space
= ' ';
160 const char tab
= '\t';
161 const char* name
= "libstdc++-v3.performance";
162 std::string::const_iterator i
= file
.begin() + file
.find_last_of('/') + 1;
163 std::string
testname(i
, file
.end());
165 std::ofstream
out(name
, std::ios_base::app
);
167 out
.setf(std::ios_base::left
);
168 out
<< std::setw(25) << testname
<< tab
;
169 out
<< std::setw(10) << comment
<< tab
;
171 out
.setf(std::ios_base::right
);
172 out
<< std::setw(4) << t
.real_time() << "r" << space
;
173 out
<< std::setw(4) << t
.user_time() << "u" << space
;
174 out
<< std::setw(4) << t
.system_time() << "s" << space
;
175 // out << std::setw(4) << r.allocated_memory() << "mem" << space;
176 out
<< std::setw(4) << r
.hard_page_fault() << "pf" << space
;
181 }; // namespace __gnu_cxx_test
183 #endif // _GLIBCPP_PERFORMANCE_H