From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../25_algorithms/copy_streambuf_iterators.cc | 98 ++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc (limited to 'libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc') 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 +// . + + +#include +#include +#include +#include + +// libstdc++/25482 +int main() +{ + using namespace std; + using namespace __gnu_test; + + typedef istreambuf_iterator in_iterator_type; + typedef ostreambuf_iterator 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; +} -- cgit v1.2.3