| // Copyright (C) 2006 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 2, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING. If not, write to the Free |
| // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, |
| // USA. |
| |
| // As a special exception, you may use this file as part of a free software |
| // library without restriction. Specifically, if other files instantiate |
| // templates or use macros or inline functions from this file, or you compile |
| // this file and link it with other files to produce an executable, this |
| // file does not by itself cause the resulting executable to be covered by |
| // the GNU General Public License. This exception does not however |
| // invalidate any other reasons why the executable file might be covered by |
| // the GNU General Public License. |
| |
| #include <iterator> |
| #include <sstream> |
| #include <algorithm> |
| #include <testsuite_performance.h> |
| |
| // libstdc++/25482 |
| int main() |
| { |
| using namespace std; |
| using namespace __gnu_test; |
| |
| typedef istreambuf_iterator<char> in_iterator_type; |
| typedef ostreambuf_iterator<char> out_iterator_type; |
| |
| time_counter time; |
| resource_counter resource; |
| |
| const char data[] = "Contrappunto dialettico alla mente"; |
| |
| // istreambuf iterators -> ostreambuf iterator |
| { |
| istringstream iss(data); |
| in_iterator_type beg(iss); |
| in_iterator_type end; |
| |
| ostringstream oss; |
| out_iterator_type out(oss); |
| |
| start_counters(time, resource); |
| for (unsigned i = 0; i < 10000000; ++i) |
| { |
| copy(beg, end, out); |
| iss.seekg(0); |
| oss.seekp(0); |
| } |
| stop_counters(time, resource); |
| report_performance(__FILE__, "isb iters -> osb iter", time, resource); |
| clear_counters(time, resource); |
| } |
| |
| // char array -> ostreambuf iterator |
| { |
| const char* beg = data; |
| const char* end = data + sizeof(data) - 1; |
| |
| ostringstream oss; |
| out_iterator_type out(oss); |
| |
| start_counters(time, resource); |
| for (unsigned i = 0; i < 10000000; ++i) |
| { |
| copy(beg, end, out); |
| oss.seekp(0); |
| } |
| stop_counters(time, resource); |
| report_performance(__FILE__, "pointers -> osb iter", time, resource); |
| clear_counters(time, resource); |
| } |
| |
| // istreambuf iterators -> char array |
| { |
| istringstream iss(data); |
| in_iterator_type beg(iss); |
| in_iterator_type end; |
| |
| char out[sizeof(data)]; |
| |
| start_counters(time, resource); |
| for (unsigned i = 0; i < 10000000; ++i) |
| { |
| copy(beg, end, out); |
| iss.seekg(0); |
| } |
| stop_counters(time, resource); |
| report_performance(__FILE__, "isb iters -> pointer", time, resource); |
| clear_counters(time, resource); |
| } |
| |
| return 0; |
| } |