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99 lines
2.5 KiB
C++
99 lines
2.5 KiB
C++
// Copyright (C) 2006-2014 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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#include <iterator>
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#include <sstream>
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#include <algorithm>
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#include <testsuite_performance.h>
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// libstdc++/25482
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int main()
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{
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using namespace std;
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using namespace __gnu_test;
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typedef istreambuf_iterator<char> in_iterator_type;
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typedef ostreambuf_iterator<char> out_iterator_type;
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time_counter time;
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resource_counter resource;
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const char data[] = "Contrappunto dialettico alla mente";
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// istreambuf iterators -> ostreambuf iterator
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{
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istringstream iss(data);
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in_iterator_type beg(iss);
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in_iterator_type end;
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ostringstream oss;
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out_iterator_type out(oss);
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start_counters(time, resource);
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for (unsigned i = 0; i < 10000000; ++i)
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{
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copy(beg, end, out);
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iss.seekg(0);
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oss.seekp(0);
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}
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stop_counters(time, resource);
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report_performance(__FILE__, "isb iters -> osb iter", time, resource);
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clear_counters(time, resource);
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}
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// char array -> ostreambuf iterator
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{
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const char* beg = data;
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const char* end = data + sizeof(data) - 1;
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ostringstream oss;
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out_iterator_type out(oss);
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start_counters(time, resource);
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for (unsigned i = 0; i < 10000000; ++i)
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{
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copy(beg, end, out);
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oss.seekp(0);
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}
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stop_counters(time, resource);
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report_performance(__FILE__, "pointers -> osb iter", time, resource);
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clear_counters(time, resource);
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}
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// istreambuf iterators -> char array
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{
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istringstream iss(data);
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in_iterator_type beg(iss);
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in_iterator_type end;
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char out[sizeof(data)];
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start_counters(time, resource);
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for (unsigned i = 0; i < 10000000; ++i)
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{
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copy(beg, end, out);
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iss.seekg(0);
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}
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stop_counters(time, resource);
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report_performance(__FILE__, "isb iters -> pointer", time, resource);
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clear_counters(time, resource);
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}
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return 0;
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}
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