[7f72217e] | 1 | /* |
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[eb5a7e07] | 2 | * $Id$ |
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[5e9b32b] | 3 | */ |
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| 4 | |
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[f42b726] | 5 | #if HAVE_CONFIG_H |
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| 6 | #include "config.h" |
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| 7 | #endif |
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| 8 | |
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[5e7b6272] | 9 | #include <assert.h> |
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[5e9b32b] | 10 | #include <sched.h> |
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[24adc5b] | 11 | #include <errno.h> |
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[f4719d5a] | 12 | |
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| 13 | #include <rtems/system.h> |
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[5e9b32b] | 14 | #include <rtems/score/tod.h> |
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| 15 | #include <rtems/score/thread.h> |
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[188c82b] | 16 | #include <rtems/seterr.h> |
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[5e9b32b] | 17 | #include <rtems/posix/priority.h> |
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[24adc5b] | 18 | #include <rtems/posix/time.h> |
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[5e9b32b] | 19 | |
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| 20 | /*PAGE |
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| 21 | * |
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| 22 | * 13.3.1 Set Scheduling Parameters, P1003.1b-1993, p. 252 |
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| 23 | * |
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| 24 | */ |
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| 25 | |
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| 26 | int sched_setparam( |
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| 27 | pid_t pid, |
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| 28 | const struct sched_param *param |
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| 29 | ) |
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| 30 | { |
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[e180a77e] | 31 | rtems_set_errno_and_return_minus_one( ENOSYS ); |
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[5e9b32b] | 32 | } |
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| 33 | |
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| 34 | /*PAGE |
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| 35 | * |
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| 36 | * 13.3.2 Set Scheduling Parameters, P1003.1b-1993, p. 253 |
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| 37 | */ |
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| 38 | |
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| 39 | int sched_getparam( |
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| 40 | pid_t pid, |
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| 41 | const struct sched_param *param |
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| 42 | ) |
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| 43 | { |
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[e180a77e] | 44 | rtems_set_errno_and_return_minus_one( ENOSYS ); |
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[5e9b32b] | 45 | } |
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| 46 | |
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| 47 | /*PAGE |
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| 48 | * |
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[874297f3] | 49 | * 13.3.3 Set Scheduling Policy and Scheduling Parameters, |
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[5e9b32b] | 50 | * P1003.1b-1993, p. 254 |
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| 51 | */ |
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| 52 | |
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| 53 | int sched_setscheduler( |
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| 54 | pid_t pid, |
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| 55 | int policy, |
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| 56 | const struct sched_param *param |
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| 57 | ) |
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| 58 | { |
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[e180a77e] | 59 | rtems_set_errno_and_return_minus_one( ENOSYS ); |
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[5e9b32b] | 60 | } |
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| 61 | |
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| 62 | /*PAGE |
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| 63 | * |
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| 64 | * 13.3.4 Get Scheduling Policy, P1003.1b-1993, p. 256 |
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| 65 | */ |
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| 66 | |
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| 67 | int sched_getscheduler( |
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| 68 | pid_t pid |
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| 69 | ) |
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| 70 | { |
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[e180a77e] | 71 | rtems_set_errno_and_return_minus_one( ENOSYS ); |
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[5e9b32b] | 72 | } |
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| 73 | |
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| 74 | /*PAGE |
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| 75 | * |
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| 76 | * 13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258 |
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| 77 | */ |
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| 78 | |
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| 79 | int sched_get_priority_max( |
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| 80 | int policy |
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| 81 | ) |
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| 82 | { |
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[c48e0ee] | 83 | switch ( policy ) { |
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| 84 | case SCHED_OTHER: |
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| 85 | case SCHED_FIFO: |
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| 86 | case SCHED_RR: |
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| 87 | case SCHED_SPORADIC: |
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| 88 | break; |
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[874297f3] | 89 | |
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[c48e0ee] | 90 | default: |
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[e180a77e] | 91 | rtems_set_errno_and_return_minus_one( EINVAL ); |
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[c48e0ee] | 92 | } |
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| 93 | |
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[5e9b32b] | 94 | return POSIX_SCHEDULER_MAXIMUM_PRIORITY; |
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| 95 | } |
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| 96 | |
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| 97 | /*PAGE |
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| 98 | * |
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| 99 | * 13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258 |
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| 100 | */ |
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| 101 | |
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| 102 | int sched_get_priority_min( |
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| 103 | int policy |
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| 104 | ) |
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| 105 | { |
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[c48e0ee] | 106 | switch ( policy ) { |
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| 107 | case SCHED_OTHER: |
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| 108 | case SCHED_FIFO: |
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| 109 | case SCHED_RR: |
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| 110 | case SCHED_SPORADIC: |
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| 111 | break; |
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[874297f3] | 112 | |
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[c48e0ee] | 113 | default: |
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[e180a77e] | 114 | rtems_set_errno_and_return_minus_one( EINVAL ); |
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[c48e0ee] | 115 | } |
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| 116 | |
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[5e9b32b] | 117 | return POSIX_SCHEDULER_MINIMUM_PRIORITY; |
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| 118 | } |
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| 119 | |
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| 120 | /*PAGE |
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| 121 | * |
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| 122 | * 13.3.6 Get Scheduling Parameter Limits, P1003.1b-1993, p. 258 |
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| 123 | */ |
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| 124 | |
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| 125 | int sched_rr_get_interval( |
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| 126 | pid_t pid, |
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| 127 | struct timespec *interval |
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| 128 | ) |
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| 129 | { |
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[c48e0ee] | 130 | /* XXX do we need to support different time quantums per thread */ |
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[5e9b32b] | 131 | |
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[c48e0ee] | 132 | /* |
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| 133 | * Only supported for the "calling process" (i.e. this node). |
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| 134 | */ |
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[5e9b32b] | 135 | |
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[ed1a0e51] | 136 | if ( pid && pid != getpid() ) |
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[e180a77e] | 137 | rtems_set_errno_and_return_minus_one( ESRCH ); |
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[b03ab630] | 138 | |
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| 139 | if ( !interval ) |
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[e180a77e] | 140 | rtems_set_errno_and_return_minus_one( EINVAL ); |
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[c238a218] | 141 | |
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[c48e0ee] | 142 | _POSIX_Interval_to_timespec( _Thread_Ticks_per_timeslice, interval ); |
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[5e9b32b] | 143 | return 0; |
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| 144 | } |
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| 145 | |
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| 146 | /*PAGE |
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| 147 | * |
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| 148 | * 13.3.5 Yield Processor, P1003.1b-1993, p. 257 |
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| 149 | */ |
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| 150 | |
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| 151 | int sched_yield( void ) |
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| 152 | { |
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[8699a70] | 153 | _Thread_Disable_dispatch(); |
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| 154 | _Thread_Yield_processor(); |
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| 155 | _Thread_Enable_dispatch(); |
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[5e9b32b] | 156 | return 0; |
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| 157 | } |
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