1 | /* COPYRIGHT (c) 1989-2009. |
---|
2 | * On-Line Applications Research Corporation (OAR). |
---|
3 | * |
---|
4 | * The license and distribution terms for this file may be |
---|
5 | * found in the file LICENSE in this distribution or at |
---|
6 | * http://www.rtems.com/license/LICENSE. |
---|
7 | * |
---|
8 | * $Id$ |
---|
9 | */ |
---|
10 | |
---|
11 | #if HAVE_CONFIG_H |
---|
12 | #include "config.h" |
---|
13 | #endif |
---|
14 | |
---|
15 | #include <pthread.h> |
---|
16 | #include <errno.h> |
---|
17 | |
---|
18 | #include <rtems/system.h> |
---|
19 | #include <rtems/posix/pthread.h> |
---|
20 | #include <rtems/posix/priority.h> |
---|
21 | #include <rtems/posix/time.h> |
---|
22 | |
---|
23 | int _POSIX_Thread_Translate_sched_param( |
---|
24 | int policy, |
---|
25 | struct sched_param *param, |
---|
26 | Thread_CPU_budget_algorithms *budget_algorithm, |
---|
27 | Thread_CPU_budget_algorithm_callout *budget_callout |
---|
28 | ) |
---|
29 | { |
---|
30 | if ( !_POSIX_Priority_Is_valid( param->sched_priority ) ) |
---|
31 | return EINVAL; |
---|
32 | |
---|
33 | *budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE; |
---|
34 | *budget_callout = NULL; |
---|
35 | |
---|
36 | if ( policy == SCHED_OTHER ) { |
---|
37 | *budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_RESET_TIMESLICE; |
---|
38 | return 0; |
---|
39 | } |
---|
40 | |
---|
41 | if ( policy == SCHED_FIFO ) { |
---|
42 | *budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_NONE; |
---|
43 | return 0; |
---|
44 | } |
---|
45 | |
---|
46 | if ( policy == SCHED_RR ) { |
---|
47 | *budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_EXHAUST_TIMESLICE; |
---|
48 | return 0; |
---|
49 | } |
---|
50 | |
---|
51 | if ( policy == SCHED_SPORADIC ) { |
---|
52 | if ( (param->ss_replenish_period.tv_sec == 0) && |
---|
53 | (param->ss_replenish_period.tv_nsec == 0) ) |
---|
54 | return EINVAL; |
---|
55 | |
---|
56 | if ( (param->ss_initial_budget.tv_sec == 0) && |
---|
57 | (param->ss_initial_budget.tv_nsec == 0) ) |
---|
58 | return EINVAL; |
---|
59 | |
---|
60 | if ( _Timespec_To_ticks( ¶m->ss_replenish_period ) < |
---|
61 | _Timespec_To_ticks( ¶m->ss_initial_budget ) ) |
---|
62 | return EINVAL; |
---|
63 | |
---|
64 | if ( !_POSIX_Priority_Is_valid( param->ss_low_priority ) ) |
---|
65 | return EINVAL; |
---|
66 | |
---|
67 | *budget_algorithm = THREAD_CPU_BUDGET_ALGORITHM_CALLOUT; |
---|
68 | *budget_callout = _POSIX_Threads_Sporadic_budget_callout; |
---|
69 | return 0; |
---|
70 | } |
---|
71 | |
---|
72 | return EINVAL; |
---|
73 | } |
---|