1/* 2 * Copyright 2009, Michael Franz 3 * Copyright 2008, Andreas Färber, andreas.faerber@web.de 4 * Distributed under the terms of the MIT license. 5 */ 6 7 8#include <errno.h> 9#include <sched.h> 10 11#include <OS.h> 12 13#include <errno_private.h> 14#include <syscalls.h> 15 16 17int 18sched_yield(void) 19{ 20 _kern_thread_yield(); 21 return 0; 22} 23 24 25int 26sched_get_priority_min(int policy) 27{ 28 switch (policy) { 29 case SCHED_RR: 30 return B_FIRST_REAL_TIME_PRIORITY; 31 32 case SCHED_OTHER: 33 return B_LOW_PRIORITY; 34 35 default: 36 __set_errno(EINVAL); 37 return -1; 38 } 39} 40 41 42int 43sched_get_priority_max(int policy) 44{ 45 switch (policy) { 46 case SCHED_RR: 47 return B_REAL_TIME_PRIORITY; 48 49 case SCHED_OTHER: 50 return B_URGENT_DISPLAY_PRIORITY; 51 52 default: 53 __set_errno(EINVAL); 54 return -1; 55 } 56} 57