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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/libstdc++-v3/testsuite/performance/27_io/filebuf_sputn_unbuf.cc | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/libstdc++-v3/testsuite/performance/27_io/filebuf_sputn_unbuf.cc')
-rw-r--r-- | gcc-4.9/libstdc++-v3/testsuite/performance/27_io/filebuf_sputn_unbuf.cc | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/gcc-4.9/libstdc++-v3/testsuite/performance/27_io/filebuf_sputn_unbuf.cc b/gcc-4.9/libstdc++-v3/testsuite/performance/27_io/filebuf_sputn_unbuf.cc new file mode 100644 index 000000000..374941baf --- /dev/null +++ b/gcc-4.9/libstdc++-v3/testsuite/performance/27_io/filebuf_sputn_unbuf.cc @@ -0,0 +1,73 @@ +// Copyright (C) 2004-2014 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 <unistd.h> +#include <cstdio> +#include <fstream> +#include <testsuite_performance.h> + +// libstdc++/11378 +int main() +{ + using namespace std; + using namespace __gnu_test; + + time_counter time; + resource_counter resource; + + const int iterations = 500000; + const int chunksize = 100; + + char* chunk = new char[chunksize]; + + // C + FILE* file = fopen("tmp", "w+"); + setvbuf(file, 0, _IONBF, 0); + start_counters(time, resource); + for (int i = 0; i < iterations; ++i) + fwrite(chunk, 1, chunksize, file); + stop_counters(time, resource); + fclose(file); + report_performance(__FILE__, "C", time, resource); + clear_counters(time, resource); + + // C unlocked + file = fopen("tmp", "w+"); + setvbuf(file, 0, _IONBF, 0); + start_counters(time, resource); + for (int i = 0; i < iterations; ++i) + fwrite_unlocked(chunk, 1, chunksize, file); + stop_counters(time, resource); + fclose(file); + report_performance(__FILE__, "C unlocked", time, resource); + clear_counters(time, resource); + + // C++ + filebuf buf; + buf.pubsetbuf(0, 0); + buf.open("tmp", ios_base::out | ios_base::in | ios_base::trunc); + start_counters(time, resource); + for (int i = 0; i < iterations; ++i) + buf.sputn(chunk, chunksize); + stop_counters(time, resource); + report_performance(__FILE__, "C++", time, resource); + + unlink("tmp"); + delete [] chunk; + + return 0; +} |