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 17 int 18 sched_yield(void) 19 { 20 _kern_thread_yield(); 21 return 0; 22 } 23 24 25 int 26 sched_get_priority_min(int policy) 27 { 28 switch (policy) { 29 case SCHED_FIFO: 30 case SCHED_RR: 31 case SCHED_SPORADIC: 32 case SCHED_OTHER: 33 return B_LOW_PRIORITY; 34 35 default: 36 __set_errno(EINVAL); 37 return -1; 38 } 39 } 40 41 42 int 43 sched_get_priority_max(int policy) 44 { 45 switch (policy) { 46 case SCHED_FIFO: 47 case SCHED_RR: 48 case SCHED_SPORADIC: 49 case SCHED_OTHER: 50 return B_URGENT_DISPLAY_PRIORITY; 51 52 default: 53 __set_errno(EINVAL); 54 return -1; 55 } 56 } 57