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1 | // Copyright (C) 2004 Free Software Foundation, Inc. |
2 | // | |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 2, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING. If not, write to the Free | |
16 | // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
17 | // USA. | |
18 | ||
19 | // As a special exception, you may use this file as part of a free software | |
20 | // library without restriction. Specifically, if other files instantiate | |
21 | // templates or use macros or inline functions from this file, or you compile | |
22 | // this file and link it with other files to produce an executable, this | |
23 | // file does not by itself cause the resulting executable to be covered by | |
24 | // the GNU General Public License. This exception does not however | |
25 | // invalidate any other reasons why the executable file might be covered by | |
26 | // the GNU General Public License. | |
27 | ||
28 | #include <sstream> | |
29 | #include <testsuite_performance.h> | |
30 | ||
31 | // libstdc++/16401 ostringstream in gcc 3.4.x very slow for big data | |
32 | void test01() | |
33 | { | |
34 | using namespace std; | |
35 | using namespace __gnu_test; | |
36 | ||
37 | time_counter time; | |
38 | resource_counter resource; | |
39 | ||
40 | for(unsigned n = 10000; n <= 10000000; n *= 10) | |
41 | { | |
42 | ostringstream oss; | |
43 | oss << "size = " << n; | |
44 | ||
45 | ostringstream str; | |
46 | start_counters(time, resource); | |
47 | for(unsigned i = 0; i < n; ++i) | |
48 | str << 'a'; | |
49 | stop_counters(time, resource); | |
50 | ||
51 | report_performance(__FILE__, oss.str(), time, resource); | |
52 | clear_counters(time, resource); | |
53 | } | |
54 | } | |
55 | ||
56 | int main() | |
57 | { | |
58 | test01(); | |
59 | return 0; | |
60 | } |