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 _GLIBCXX_PERFORMANCE_H
32 #define _GLIBCXX_PERFORMANCE_H
34 #include <sys/times.h>
35 #include <sys/resource.h>
46 struct mallinfo
{ int uordblks
; };
47 struct mallinfo empty
= { 0 };
48 struct mallinfo
mallinfo(void) { return empty
; }
56 clock_t elapsed_begin
;
70 memset(&tms_begin
, 0, sizeof(tms
));
71 memset(&tms_end
, 0, sizeof(tms
));
76 { elapsed_begin
= times(&tms_begin
); }
80 { elapsed_end
= times(&tms_end
); }
84 { return elapsed_end
- elapsed_begin
; }
88 { return tms_end
.tms_utime
- tms_begin
.tms_utime
; }
92 { return tms_end
.tms_stime
- tms_begin
.tms_stime
; }
95 class resource_counter
100 struct mallinfo allocation_begin
;
101 struct mallinfo allocation_end
;
104 resource_counter(int i
= RUSAGE_SELF
) : who(i
)
110 memset(&rusage_begin
, 0, sizeof(rusage_begin
));
111 memset(&rusage_end
, 0, sizeof(rusage_end
));
112 memset(&allocation_begin
, 0, sizeof(allocation_begin
));
113 memset(&allocation_end
, 0, sizeof(allocation_end
));
119 if (getrusage(who
, &rusage_begin
) != 0 )
120 memset(&rusage_begin
, 0, sizeof(rusage_begin
));
121 malloc(0); // Needed for some implementations.
122 allocation_begin
= mallinfo();
128 if (getrusage(who
, &rusage_end
) != 0 )
129 memset(&rusage_end
, 0, sizeof(rusage_end
));
130 allocation_end
= mallinfo();
134 allocated_memory() const
135 { return allocation_end
.uordblks
- allocation_begin
.uordblks
; }
138 hard_page_fault() const
139 { return rusage_end
.ru_majflt
- rusage_begin
.ru_majflt
; }
143 { return rusage_end
.ru_nswap
- rusage_begin
.ru_nswap
; }
147 start_counters(time_counter
& t
, resource_counter
& r
)
154 stop_counters(time_counter
& t
, resource_counter
& r
)
161 clear_counters(time_counter
& t
, resource_counter
& r
)
168 report_performance(const std::string file
, const std::string comment
,
169 const time_counter
& t
, const resource_counter
& r
)
171 const char space
= ' ';
172 const char tab
= '\t';
173 const char* name
= "libstdc++-v3-performance.sum";
174 std::string::const_iterator i
= file
.begin() + file
.find_last_of('/') + 1;
175 std::string
testname(i
, file
.end());
177 std::ofstream
out(name
, std::ios_base::app
);
179 out
.setf(std::ios_base::left
);
180 out
<< std::setw(25) << testname
<< tab
;
181 out
<< std::setw(10) << comment
<< tab
;
183 out
.setf(std::ios_base::right
);
184 out
<< std::setw(4) << t
.real_time() << "r" << space
;
185 out
<< std::setw(4) << t
.user_time() << "u" << space
;
186 out
<< std::setw(4) << t
.system_time() << "s" << space
;
187 out
<< std::setw(4) << r
.allocated_memory() << "mem" << space
;
188 out
<< std::setw(4) << r
.hard_page_fault() << "pf" << space
;
193 }; // namespace __gnu_test
195 #endif // _GLIBCXX_PERFORMANCE_H