2 * Copyright (c) 2012 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com> and Thomas Nikolajsen
6 * <thomas.nikolajsen@mail.dk>
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * 3. Neither the name of The DragonFly Project nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific, prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/types.h>
37 #include <sys/usched.h>
43 static void usage(void);
48 main(int ac, char **av)
54 char *sched_cpustr = NULL;
55 cpumask_t cpumask = 0;
58 while ((ch = getopt(ac, av, "d")) != -1) {
75 sched_cpustr = strdup(av[0]);
76 sched = strsep(&sched_cpustr, ":");
77 if (strcmp(sched, "default") == 0)
78 fprintf(stderr, "Ignoring scheduler == \"default\": not implemented\n");
79 cpustr = strsep(&sched_cpustr, "");
80 if (strlen(sched) == 0 && cpustr == NULL) {
85 cpumask = strtoul(cpustr, NULL, 0);
87 if (strlen(sched) != 0) {
89 fprintf(stderr, "DEBUG: USCHED_SET_SCHEDULER: scheduler: %s\n", sched);
90 res = usched_set(getpid(), USCHED_SET_SCHEDULER, sched, strlen(sched));
92 perror("usched_set(,USCHED_SET_SCHEDULER,,)");
97 while ((cpumask & 1) == 0) {
104 fprintf(stderr, "DEBUG: USCHED_SET_CPU: cpuid: %d\n", cpuid);
105 res = usched_set(getpid(), USCHED_SET_CPU, &cpuid, sizeof(int));
107 perror("usched_set(,USCHED_SET_CPU,,)");
110 while (cpumask != 0) {
111 while ((cpumask & 1) == 0) {
118 fprintf(stderr, "DEBUG: USCHED_ADD_CPU: cpuid: %d\n", cpuid);
119 res = usched_set(getpid(), USCHED_ADD_CPU, &cpuid, sizeof(int));
121 perror("usched_set(,USCHED_ADD_CPU,,)");
126 execvp(av[1], av + 1);
134 fprintf(stderr, "usage: usched [-d] {scheduler[:cpumask] | :cpumask} program [argument ...]\n");