1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 #ifndef _SCHED_H_ 29 #define _SCHED_H_ 30 31 #include <sys/cdefs.h> 32 #include <sys/time.h> 33 34 __BEGIN_DECLS 35 36 #define SCHED_NORMAL 0 37 #define SCHED_OTHER 0 38 #define SCHED_FIFO 1 39 #define SCHED_RR 2 40 41 struct sched_param { 42 int sched_priority; 43 }; 44 45 extern int sched_setscheduler(pid_t, int, const struct sched_param *); 46 extern int sched_getscheduler(pid_t); 47 extern int sched_yield(void); 48 extern int sched_get_priority_max(int policy); 49 extern int sched_get_priority_min(int policy); 50 extern int sched_setparam(pid_t, const struct sched_param *); 51 extern int sched_getparam(pid_t, struct sched_param *); 52 extern int sched_rr_get_interval(pid_t pid, struct timespec *tp); 53 54 __END_DECLS 55 56 #endif /* _SCHED_H_ */ 57