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/*
* Copyright (c) 2004, Jilles Tjoelker
* All rights reserved.
*
* Redistribution and use in source and binary forms, with
* or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
* 2. 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.
*
* 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.
*/
#include <sys/types.h>
#include <sys/time.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
int
main(int argc, char *argv[])
{
unsigned char buf[12];
char data[65536];
int n;
int r;
struct timeval totaltime, prev, cur, diff, thres;
int first = 1;
if (argc != 1)
{
fprintf(stderr, "Usage: %s\n", argv[0]);
return 1;
}
timerclear(&totaltime);
thres.tv_sec = 10;
thres.tv_usec = 0;
while ((errno = 0), fread(buf, 1, 12, stdin) == 12)
{
cur.tv_sec = (((((buf[3] << 8) | buf[2]) << 8) | buf[1]) << 8) | buf[0];
cur.tv_usec = (((((buf[7] << 8) | buf[6]) << 8) | buf[5]) << 8) | buf[4];
if (first)
first = 0;
else
{
timersub(&cur, &prev, &diff);
if (timercmp(&diff, &thres, >))
diff = thres;
timeradd(&totaltime, &diff, &totaltime);
}
prev = cur;
n = (((((buf[11] << 8) | buf[10]) << 8) | buf[9]) << 8) | buf[8];
if ((unsigned int)n > sizeof(data))
{
fprintf(stderr, "h->len too big (%d)\n", n);
exit(1);
}
r = fread(data, 1, n, stdin);
if (n != r)
{
perror("read stdin");
exit(1);
}
}
if (errno != 0)
{
perror("read stdin");
exit(1);
}
printf("%ld.%06ld\n", totaltime.tv_sec, totaltime.tv_usec);
return 0;
}
/* vim:ts=8:cin:sw=4
* */
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