#include <unistd.h>
#include <getopt.h>
#include <errno.h>
+#include <err.h>
+
+#include "nls.h"
/* the SCHED_BATCH is supported since Linux 2.6.16
* -- temporary workaround for people with old glibc headers
# define SCHED_IDLE 5
#endif
-static void show_usage(const char *cmd)
+#ifndef ARRAY_SIZE
+# define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#endif
+
+static void show_usage(int rc)
{
- fprintf(stderr, "chrt (%s)\n", PACKAGE_STRING);
- fprintf(stderr, "usage: %s [options] [prio] [pid | cmd [args...]]\n",
- cmd);
- fprintf(stderr, "manipulate real-time attributes of a process\n");
- fprintf(stderr, " -b, --batch "
- "set policy to SCHED_BATCH\n");
- fprintf(stderr, " -f, --fifo "
- "set policy to SCHED_FIFO\n");
- fprintf(stderr, " -i, --idle "
- "set policy to SCHED_IDLE\n");
- fprintf(stderr, " -p, --pid "
- "operate on existing given pid\n");
- fprintf(stderr, " -m, --max "
- "show min and max valid priorities\n");
- fprintf(stderr, " -o, --other "
- "set policy to SCHED_OTHER\n");
- fprintf(stderr, " -r, --rr "
- "set policy to SCHED_RR (default)\n");
- fprintf(stderr, " -h, --help "
- "display this help\n");
- fprintf(stderr, " -v, --verbose "
- "display status information\n");
- fprintf(stderr, " -V, --version "
- "output version information\n\n");
- fprintf(stderr, "You must give a priority if changing policy.\n\n");
- fprintf(stderr, "Report bugs and send patches to <rml@tech9.net>\n");
+ fprintf(stdout, _(
+ "\nchrt - manipulate real-time attributes of a process.\n"
+ "\nSet policy:\n"
+ " chrt [options] <policy> <priority> {<pid> | <command> [<arg> ...]}\n"
+ "\nGet policy:\n"
+ " chrt [options] {<pid> | <command> [<arg> ...]}\n\n"
+ "\nScheduling policies:\n"
+ " -b | --batch set policy to SCHED_BATCH\n"
+ " -f | --fifo set policy to SCHED_FIFO\n"
+ " -i | --idle set policy to SCHED_IDLE\n"
+ " -o | --other set policy to SCHED_OTHER\n"
+ " -r | --rr set policy to SCHED_RR (default)\n"
+ "\nOptions:\n"
+ " -h | --help display this help\n"
+ " -p | --pid operate on existing given pid\n"
+ " -m | --max show min and max valid priorities\n"
+ " -v | --verbose display status information\n"
+ " -V | --version output version information\n\n"));
+
+ exit(rc);
}
static void show_rt_info(const char *what, pid_t pid)
pid = getpid();
policy = sched_getscheduler(pid);
- if (policy == -1) {
- perror("sched_getscheduler");
- fprintf(stderr, "failed to get pid %d's policy\n", pid);
- exit(1);
- }
+ if (policy == -1)
+ err(EXIT_FAILURE, _("failed to get pid %d's policy"), pid);
- printf("pid %d's %s scheduling policy: ", pid, what);
+ printf(_("pid %d's %s scheduling policy: "), pid, what);
switch (policy) {
case SCHED_OTHER:
printf("SCHED_OTHER\n");
printf("SCHED_BATCH\n");
break;
default:
- printf("unknown\n");
+ printf(_("unknown\n"));
}
- if (sched_getparam(pid, &sp)) {
- perror("sched_getparam");
- fprintf(stderr, "failed to get pid %d's attributes\n", pid);
- exit(1);
- }
+ if (sched_getparam(pid, &sp))
+ err(EXIT_FAILURE, _("failed to get pid %d's attributes"), pid);
- printf("pid %d's %s scheduling priority: %d\n",
+ printf(_("pid %d's %s scheduling priority: %d\n"),
pid, what, sp.sched_priority);
}
static void show_min_max(void)
{
- int max, min;
-
- max = sched_get_priority_max(SCHED_OTHER);
- min = sched_get_priority_min(SCHED_OTHER);
- if (max >= 0 && min >= 0)
- printf("SCHED_OTHER min/max priority\t: %d/%d\n", min, max);
- else
- printf("SCHED_OTHER not supported?\n");
-
- max = sched_get_priority_max(SCHED_FIFO);
- min = sched_get_priority_min(SCHED_FIFO);
- if (max >= 0 && min >= 0)
- printf("SCHED_FIFO min/max priority\t: %d/%d\n", min, max);
- else
- printf("SCHED_FIFO not supported?\n");
-
- max = sched_get_priority_max(SCHED_RR);
- min = sched_get_priority_min(SCHED_RR);
- if (max >= 0 && min >= 0)
- printf("SCHED_RR min/max priority\t: %d/%d\n", min, max);
- else
- printf("SCHED_RR not supported?\n");
-
- max = sched_get_priority_max(SCHED_BATCH);
- min = sched_get_priority_min(SCHED_BATCH);
- if (max >= 0 && min >= 0)
- printf("SCHED_BATCH min/max priority\t: %d/%d\n", min, max);
- else
- printf("SCHED_BATCH not supported?\n");
-
- max = sched_get_priority_max(SCHED_IDLE);
- min = sched_get_priority_min(SCHED_IDLE);
- if (max >= 0 && min >= 0)
- printf("SCHED_IDLE min/max priority\t: %d/%d\n", min, max);
- else
- printf("SCHED_IDLE not supported?\n");
+ int i;
+ int policies[] = { SCHED_OTHER, SCHED_FIFO, SCHED_RR,
+ SCHED_BATCH, SCHED_IDLE };
+ const char *names[] = { "OTHER", "FIFO", "RR", "BATCH", "IDLE" };
+
+ for (i = 0; i < ARRAY_SIZE(policies); i++) {
+ int max = sched_get_priority_max(policies[i]);
+ int min = sched_get_priority_min(policies[i]);
+
+ if (max >= 0 && min >= 0)
+ printf(_("SCHED_%s min/max priority\t: %d/%d\n"),
+ names[i], min, max);
+ else
+ printf(_("SCHED_%s not supported?\n"), names[i]);
+ }
}
int main(int argc, char *argv[])
{ NULL, 0, NULL, 0 }
};
+ setlocale(LC_ALL, "");
+ bindtextdomain(PACKAGE, LOCALEDIR);
+ textdomain(PACKAGE);
+
while((i = getopt_long(argc, argv, "+bfiphmorvV", longopts, NULL)) != -1)
{
- int ret = 1;
+ int ret = EXIT_FAILURE;
switch (i) {
case 'b':
case 'p':
errno = 0;
pid = strtol(argv[argc - 1], NULL, 10);
- if (errno) {
- perror("strtol");
- fprintf(stderr, "failed to parse pid!\n");
- return 1;
- }
+ if (errno)
+ err(EXIT_FAILURE, _("failed to parse pid"));
break;
case 'r':
policy = SCHED_RR;
printf("chrt (%s)\n", PACKAGE_STRING);
return 0;
case 'h':
- ret = 0;
+ ret = EXIT_SUCCESS;
default:
- show_usage(argv[0]);
- return ret;
+ show_usage(ret);
}
-
}
- if (((pid > -1) && argc - optind < 1) || ((pid == -1) && argc - optind < 2)) {
- show_usage(argv[0]);
- return 1;
- }
+ if (((pid > -1) && argc - optind < 1) || ((pid == -1) && argc - optind < 2))
+ show_usage(EXIT_FAILURE);
if ((pid > -1) && (verbose || argc - optind == 1)) {
- show_rt_info("current", pid);
+ show_rt_info(_("current"), pid);
if (argc - optind == 1)
- return 0;
+ return EXIT_SUCCESS;
}
errno = 0;
priority = strtol(argv[optind], NULL, 10);
- if (errno) {
- perror("strtol");
- fprintf(stderr, "failed to parse priority!\n");
- return 1;
- }
+ if (errno)
+ err(EXIT_FAILURE, _("failed to parse priority"));
if (pid == -1)
pid = 0;
sp.sched_priority = priority;
- if (sched_setscheduler(pid, policy, &sp) == -1) {
- perror("sched_setscheduler");
- fprintf(stderr, "failed to set pid %d's policy\n", pid);
- return 1;
- }
+ if (sched_setscheduler(pid, policy, &sp) == -1)
+ err(EXIT_FAILURE, _("failed to set pid %d's policy"), pid);
if (verbose)
show_rt_info("new", pid);
argv += optind + 1;
execvp(argv[0], argv);
perror("execvp");
- fprintf(stderr, "failed to execute %s\n", argv[0]);
- return 1;
+ err(EXIT_FAILURE, _("failed to execute %s"), argv[0]);
}
- return 0;
+ return EXIT_SUCCESS;
}
projects / util-linux / commitdiff