8370378a24
2003-06-26 Nathan C. Myers <ncm-nospam@cantrip.org> Paolo Carlini <pcarlini@unitus.it> * testsuite/performance/filebuf_copy.cc: New, testing char by char file copy. Co-Authored-By: Paolo Carlini <pcarlini@unitus.it> From-SVN: r68538
76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
// Copyright (C) 2003 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 2, 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 COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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#include <cstdio>
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#include <fstream>
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#include <testsuite_performance.h>
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int main()
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{
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using namespace std;
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using namespace __gnu_cxx_test;
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time_counter time;
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resource_counter resource;
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const unsigned long count = 1ul << 30;
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// C unlocked
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FILE* fpi = fopen("/dev/zero", "r");
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FILE* fpo = fopen("/dev/null", "w");
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start_counters(time, resource);
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for (unsigned long i = 0; i < count; ++i)
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{
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int c = getc_unlocked(fpi);
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if (c == EOF || putc_unlocked(c, fpo) == EOF)
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break;
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}
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stop_counters(time, resource);
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fclose(fpi);
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fclose(fpo);
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report_performance(__FILE__, "C unlocked", time, resource);
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clear_counters(time, resource);
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// C++
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filebuf in;
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in.open("/dev/zero", ios::in);
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filebuf out;
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out.open("/dev/null", ios::out);
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start_counters(time, resource);
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for (unsigned long i = 0; i < count; ++i)
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{
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int c = in.sbumpc();
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if (c == EOF || out.sputc(c) == EOF)
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break;
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}
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stop_counters(time, resource);
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in.close();
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out.close();
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report_performance(__FILE__, "C++", time, resource);
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return 0;
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}
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