108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
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/* Copyright (c) 2016 Phoenix Systems
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All rights reserved.
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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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THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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#include "syscall.h"
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#include <errno.h>
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#include <sys/sched.h>
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#include <sys/types.h>
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int sched_getparam(pid_t pid, struct sched_param *param)
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{
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int ret = syscall2(int, SYS_SCHED_GETPARAM, pid, param);
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if(ret < 0) {
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errno = -ret;
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return -1;
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}
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return ret;
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}
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int sched_setparam(pid_t pid, const struct sched_param *param)
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{
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int ret = syscall2(int, SYS_SCHED_SETPARAM, pid, param);
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if(ret < 0) {
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errno = -ret;
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return -1;
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}
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return ret;
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}
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int sched_getscheduler(pid_t pid)
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{
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int ret = syscall1(int, SYS_SCHED_GETSCHEDULER, pid);
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if(ret < 0) {
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errno = -ret;
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return -1;
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}
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return ret;
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}
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int sched_setscheduler(pid_t pid, int policy, const struct sched_param *param)
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{
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int ret = syscall3(int, SYS_SCHED_SETSCHEDULER, pid, policy, param);
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if(ret < 0) {
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errno = -ret;
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return -1;
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}
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return ret;
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}
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int sched_get_priority_max(int policy)
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{
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int ret = syscall1(int, SYS_SCHED_GET_PRIORITY_MAX, policy);
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if(ret < 0) {
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errno = -ret;
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return -1;
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}
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return ret;
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}
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int sched_get_priority_min(int policy)
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{
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int ret = syscall1(int, SYS_SCHED_GET_PRIORITY_MIN, policy);
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if(ret < 0) {
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errno = -ret;
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return -1;
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}
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return ret;
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}
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int sched_yield(void)
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{
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int ret = syscall0(int, SYS_SCHED_YIELD);
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if(ret < 0) {
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errno = -ret;
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return -1;
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}
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return ret;
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}
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