GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/time/time.c Lines: 27 88 30.7 %
Date: 2017-11-13 Branches: 14 40 35.0 %

Line Branch Exec Source
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/*	$OpenBSD: time.c,v 1.25 2017/08/21 13:38:02 schwarze Exp $	*/
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/*	$NetBSD: time.c,v 1.7 1995/06/27 00:34:00 jtc Exp $	*/
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/*
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 * Copyright (c) 1987, 1988, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <sys/wait.h>
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#include <sys/sysctl.h>
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#include <err.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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__dead void usage(void);
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int
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main(int argc, char *argv[])
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{
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6
	struct rusage ru;
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3
	struct timespec before, after, during;
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3
	int ch, exitonsig, lflag, portableflag, status;
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	pid_t pid;
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	if (pledge("stdio proc exec flock rpath cpath wpath", NULL) == -1)
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		err(1, "pledge");
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	exitonsig = lflag = portableflag = 0;
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	while ((ch = getopt(argc, argv, "lp")) != -1) {
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		switch(ch) {
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		case 'l':
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			lflag = 1;
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			break;
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		case 'p':
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			portableflag = 1;
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			break;
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		default:
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			usage();
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		}
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	}
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	argc -= optind;
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3
	argv += optind;
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	if (argc < 1)
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		usage();
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	clock_gettime(CLOCK_MONOTONIC, &before);
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	switch(pid = vfork()) {
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	case -1:			/* error */
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		warn("fork");
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		return 1;
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	case 0:				/* child */
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		execvp(*argv, argv);
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		warn("%s", *argv);
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		_exit((errno == ENOENT) ? 127 : 126);
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	}
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	/* parent */
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	signal(SIGINT, SIG_IGN);
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	signal(SIGQUIT, SIG_IGN);
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	while (wait3(&status, 0, &ru) != pid)
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		;
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	clock_gettime(CLOCK_MONOTONIC, &after);
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	if (WIFSIGNALED(status))
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		exitonsig = WTERMSIG(status);
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	if (!WIFEXITED(status))
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		fprintf(stderr, "Command terminated abnormally.\n");
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	timespecsub(&after, &before, &during);
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	if (portableflag) {
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		fprintf(stderr, "real %9lld.%02ld\n",
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			(long long)during.tv_sec, during.tv_nsec/10000000);
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		fprintf(stderr, "user %9lld.%02ld\n",
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			(long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
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		fprintf(stderr, "sys  %9lld.%02ld\n",
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			(long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
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	} else {
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		fprintf(stderr, "%9lld.%02ld real ",
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			(long long)during.tv_sec, during.tv_nsec/10000000);
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		fprintf(stderr, "%9lld.%02ld user ",
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			(long long)ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000);
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		fprintf(stderr, "%9lld.%02ld sys\n",
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			(long long)ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000);
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	}
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	if (lflag) {
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		int hz;
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		long ticks;
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		int mib[2];
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		struct clockinfo clkinfo;
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		size_t size;
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		mib[0] = CTL_KERN;
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		mib[1] = KERN_CLOCKRATE;
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		size = sizeof(clkinfo);
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		if (sysctl(mib, 2, &clkinfo, &size, NULL, 0) < 0)
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			err(1, "sysctl");
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		hz = clkinfo.hz;
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		ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
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		     hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_maxrss, "maximum resident set size");
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		fprintf(stderr, "%10ld  %s\n", ticks ? ru.ru_ixrss / ticks : 0,
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			"average shared memory size");
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		fprintf(stderr, "%10ld  %s\n", ticks ? ru.ru_idrss / ticks : 0,
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			"average unshared data size");
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		fprintf(stderr, "%10ld  %s\n", ticks ? ru.ru_isrss / ticks : 0,
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			"average unshared stack size");
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_minflt, "minor page faults");
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_majflt, "major page faults");
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_nswap, "swaps");
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_inblock, "block input operations");
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_oublock, "block output operations");
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_msgsnd, "messages sent");
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_msgrcv, "messages received");
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_nsignals, "signals received");
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_nvcsw, "voluntary context switches");
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		fprintf(stderr, "%10ld  %s\n",
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			ru.ru_nivcsw, "involuntary context switches");
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	}
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	if (exitonsig) {
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		if (signal(exitonsig, SIG_DFL) == SIG_ERR)
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			return 128 + exitonsig;
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		else
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			raise(exitonsig);
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	}
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	return WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE;
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}
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__dead void
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usage(void)
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{
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	fprintf(stderr, "usage: %s [-lp] utility [argument ...]\n",
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	    getprogname());
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	exit(1);
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}