gem5/src/unittest/cprintftime.cc
Nathan Binkert af698e8b05 Quick program to time how long ccprintf takes to write
to a stream compared to sprintf to a buffer.

--HG--
extra : convert_revision : de80724943d18aa110aa39cde9414252d9a7944c
2007-02-07 22:02:09 -08:00

90 lines
2.7 KiB
C++

/*
* Copyright (c) 2002-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
*/
#include <iostream>
#include <list>
#include <string>
#include <sstream>
#include "base/cprintf.hh"
using namespace std;
volatile int stop = false;
void
handle_alarm(int signal)
{
stop = true;
}
void
do_test(int seconds)
{
stop = false;
alarm(seconds);
}
int
main()
{
stringstream result;
int iterations = 0;
signal(SIGALRM, handle_alarm);
do_test(10);
while (!stop) {
stringstream result;
ccprintf(result,
"this is a %s of %d iterations %3.2f %#x\n",
"test", iterations, 51.934, &result);
iterations += 1;
}
cprintf("completed %d iterations of ccprintf in 10s, %f iterations/s\n",
iterations, iterations / 10.0);
do_test(10);
while (!stop) {
char result[1024];
sprintf(result,
"this is a %s of %d iterations %3.2f %#x\n",
"test", iterations, 51.934, &result);
iterations += 1;
}
cprintf("completed %d iterations of sprintf in 10s, %f iterations/s\n",
iterations, iterations / 10.0);
return 0;
}