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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc | |
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Diffstat (limited to 'libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc')
-rw-r--r-- | libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc b/libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc new file mode 100644 index 000000000..6f22f69c3 --- /dev/null +++ b/libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc @@ -0,0 +1,98 @@ +// Copyright (C) 2006, 2009 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 3, 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 COPYING3. If not see +// <http://www.gnu.org/licenses/>. + + +#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; +} |