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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/27_io/filebuf_copy.cc | |
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Diffstat (limited to 'libstdc++-v3/testsuite/performance/27_io/filebuf_copy.cc')
-rw-r--r-- | libstdc++-v3/testsuite/performance/27_io/filebuf_copy.cc | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/performance/27_io/filebuf_copy.cc b/libstdc++-v3/testsuite/performance/27_io/filebuf_copy.cc new file mode 100644 index 000000000..090f32cc1 --- /dev/null +++ b/libstdc++-v3/testsuite/performance/27_io/filebuf_copy.cc @@ -0,0 +1,66 @@ +// Copyright (C) 2003, 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 <cstdio> +#include <fstream> +#include <testsuite_performance.h> + +int main() +{ + using namespace std; + using namespace __gnu_test; + + time_counter time; + resource_counter resource; + const unsigned long count = 1ul << 30; + + // C unlocked + FILE* fpi = fopen("/dev/zero", "r"); + FILE* fpo = fopen("/dev/null", "w"); + start_counters(time, resource); + for (unsigned long i = 0; i < count; ++i) + { + int c = getc_unlocked(fpi); + if (c == EOF || putc_unlocked(c, fpo) == EOF) + break; + } + stop_counters(time, resource); + fclose(fpi); + fclose(fpo); + report_performance(__FILE__, "C unlocked", time, resource); + clear_counters(time, resource); + + // C++ + filebuf in; + in.open("/dev/zero", ios::in); + filebuf out; + out.open("/dev/null", ios::out); + start_counters(time, resource); + for (unsigned long i = 0; i < count; ++i) + { + int c = in.sbumpc(); + if (c == EOF || out.sputc(c) == EOF) + break; + } + stop_counters(time, resource); + in.close(); + out.close(); + report_performance(__FILE__, "C++", time, resource); + + return 0; +} |