int
machine_init(struct statics *statics)
{
size_t size = sizeof(ncpu);
int mib[2], pagesize, cpu;
mib[0] = CTL_HW;
mib[1] = HW_NCPU;
if (sysctl(mib, 2, &ncpu, &size, NULL, 0) == -1)
return (-1);
cpu_states = calloc(ncpu, CPUSTATES * sizeof(int64_t));
if (cpu_states == NULL)
err(1, NULL);
cp_time = calloc(ncpu, sizeof(int64_t *));
cp_old = calloc(ncpu, sizeof(int64_t *));
cp_diff = calloc(ncpu, sizeof(int64_t *));
if (cp_time == NULL || cp_old == NULL || cp_diff == NULL)
err(1, NULL);
for (cpu = 0; cpu < ncpu; cpu++) {
cp_time[cpu] = calloc(CPUSTATES, sizeof(int64_t));
cp_old[cpu] = calloc(CPUSTATES, sizeof(int64_t));
cp_diff[cpu] = calloc(CPUSTATES, sizeof(int64_t));
if (cp_time[cpu] == NULL || cp_old[cpu] == NULL ||
cp_diff[cpu] == NULL)
err(1, NULL);
}
stathz = getstathz();
if (stathz == -1)
return (-1);
pbase = NULL;
pref = NULL;
onproc = -1;
nproc = 0;
/*
* get the page size with "getpagesize" and calculate pageshift from
* it
*/
pagesize = getpagesize();
pageshift = 0;
while (pagesize > 1) {
pageshift++;
pagesize >>= 1;
}
/* we only need the amount of log(2)1024 for our conversion */
pageshift -= LOG1024;
/* fill in the statics information */
statics->procstate_names = procstatenames;
statics->cpustate_names = cpustatenames;
statics->memory_names = memorynames;
statics->order_names = ordernames;
return (0);
}
int
main(int argc, char **argv)
{
int aflag, ch, lflag, status;
int exitonsig;
pid_t pid;
struct rlimit rl;
struct rusage ru;
struct timeval after;
char *ofn = NULL;
FILE *out = stderr;
(void) setlocale(LC_NUMERIC, "");
decimal_point = localeconv()->decimal_point[0];
aflag = hflag = lflag = pflag = 0;
while ((ch = getopt(argc, argv, "ahlo:p")) != -1)
switch((char)ch) {
case 'a':
aflag = 1;
break;
case 'h':
hflag = 1;
break;
case 'l':
lflag = 1;
break;
case 'o':
ofn = optarg;
break;
case 'p':
pflag = 1;
break;
case '?':
default:
usage();
}
if (!(argc -= optind))
exit(0);
argv += optind;
if (ofn) {
if ((out = fopen(ofn, aflag ? "ae" : "we")) == NULL)
err(1, "%s", ofn);
setvbuf(out, (char *)NULL, _IONBF, (size_t)0);
}
(void)gettimeofday(&before_tv, NULL);
switch(pid = fork()) {
case -1: /* error */
err(1, "time");
/* NOTREACHED */
case 0: /* child */
execvp(*argv, argv);
err(errno == ENOENT ? 127 : 126, "%s", *argv);
/* NOTREACHED */
}
/* parent */
(void)signal(SIGINT, SIG_IGN);
(void)signal(SIGQUIT, SIG_IGN);
siginfo_recvd = 0;
(void)signal(SIGINFO, siginfo);
(void)siginterrupt(SIGINFO, 1);
while (wait4(pid, &status, 0, &ru) != pid) {
if (siginfo_recvd) {
siginfo_recvd = 0;
(void)gettimeofday(&after, NULL);
getrusage(RUSAGE_CHILDREN, &ru);
showtime(stdout, &before_tv, &after, &ru);
}
}
(void)gettimeofday(&after, NULL);
if ( ! WIFEXITED(status))
warnx("command terminated abnormally");
exitonsig = WIFSIGNALED(status) ? WTERMSIG(status) : 0;
showtime(out, &before_tv, &after, &ru);
if (lflag) {
int hz = getstathz();
u_long ticks;
ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) +
hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000;
/*
* If our round-off on the tick calculation still puts us at 0,
* then always assume at least one tick.
*/
if (ticks == 0)
ticks = 1;
fprintf(out, "%10ld %s\n",
ru.ru_maxrss, "maximum resident set size");
fprintf(out, "%10ld %s\n",
ru.ru_ixrss / ticks, "average shared memory size");
fprintf(out, "%10ld %s\n",
ru.ru_idrss / ticks, "average unshared data size");
fprintf(out, "%10ld %s\n",
ru.ru_isrss / ticks, "average unshared stack size");
fprintf(out, "%10ld %s\n",
ru.ru_minflt, "page reclaims");
fprintf(out, "%10ld %s\n",
ru.ru_majflt, "page faults");
fprintf(out, "%10ld %s\n",
ru.ru_nswap, "swaps");
fprintf(out, "%10ld %s\n",
ru.ru_inblock, "block input operations");
fprintf(out, "%10ld %s\n",
ru.ru_oublock, "block output operations");
fprintf(out, "%10ld %s\n",
ru.ru_msgsnd, "messages sent");
fprintf(out, "%10ld %s\n",
ru.ru_msgrcv, "messages received");
fprintf(out, "%10ld %s\n",
ru.ru_nsignals, "signals received");
fprintf(out, "%10ld %s\n",
ru.ru_nvcsw, "voluntary context switches");
fprintf(out, "%10ld %s\n",
ru.ru_nivcsw, "involuntary context switches");
}
/*
* If the child has exited on a signal, exit on the same
* signal, too, in order to reproduce the child's exit status.
* However, avoid actually dumping core from the current process.
*/
if (exitonsig) {
if (signal(exitonsig, SIG_DFL) == SIG_ERR)
warn("signal");
else {
rl.rlim_max = rl.rlim_cur = 0;
if (setrlimit(RLIMIT_CORE, &rl) == -1)
warn("setrlimit");
kill(getpid(), exitonsig);
}
}
exit (WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE);
}
