1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Pthread Get Attribute |
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5 | * @ingroup POSIXAPI |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 2014. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.org/license/LICENSE. |
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15 | */ |
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16 | |
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17 | #if HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #define _GNU_SOURCE |
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22 | #include <pthread.h> |
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23 | #include <errno.h> |
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24 | #include <string.h> |
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25 | |
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26 | #include <rtems/posix/pthreadimpl.h> |
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27 | #include <rtems/posix/pthreadattrimpl.h> |
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28 | #include <rtems/posix/priorityimpl.h> |
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29 | #include <rtems/score/schedulerimpl.h> |
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30 | #include <rtems/score/threadimpl.h> |
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31 | |
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32 | int pthread_getattr_np( |
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33 | pthread_t thread, |
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34 | pthread_attr_t *attr |
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35 | ) |
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36 | { |
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37 | Thread_Control *the_thread; |
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38 | ISR_lock_Context lock_context; |
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39 | POSIX_API_Control *api; |
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40 | const Scheduler_Control *scheduler; |
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41 | bool ok; |
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42 | |
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43 | if ( attr == NULL ) { |
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44 | return EINVAL; |
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45 | } |
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46 | |
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47 | attr = memset( attr, 0, sizeof( *attr ) ); |
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48 | |
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49 | the_thread = _Thread_Get( thread, &lock_context ); |
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50 | |
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51 | if ( the_thread == NULL ) { |
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52 | return ESRCH; |
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53 | } |
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54 | |
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55 | _Thread_State_acquire_critical( the_thread, &lock_context ); |
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56 | |
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57 | api = the_thread->API_Extensions[ THREAD_API_POSIX ]; |
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58 | |
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59 | attr->is_initialized = true; |
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60 | attr->stackaddr = the_thread->Start.Initial_stack.area; |
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61 | attr->stacksize = the_thread->Start.Initial_stack.size; |
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62 | attr->contentionscope = PTHREAD_SCOPE_PROCESS; |
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63 | |
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64 | if ( api->created_with_explicit_scheduler ) { |
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65 | attr->inheritsched = PTHREAD_EXPLICIT_SCHED; |
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66 | } else { |
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67 | attr->inheritsched = PTHREAD_INHERIT_SCHED; |
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68 | } |
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69 | |
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70 | attr->schedpolicy = api->schedpolicy; |
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71 | |
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72 | scheduler = _Thread_Scheduler_get_home( the_thread ); |
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73 | attr->schedparam.sched_priority = _POSIX_Priority_From_core( |
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74 | scheduler, |
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75 | _Thread_Get_priority( the_thread ) |
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76 | ); |
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77 | _POSIX_Threads_Get_sched_param_sporadic( |
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78 | the_thread, |
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79 | api, |
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80 | scheduler, |
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81 | &attr->schedparam |
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82 | ); |
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83 | attr->cputime_clock_allowed = 1; |
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84 | |
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85 | if ( _Thread_Is_joinable( the_thread ) ) { |
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86 | attr->detachstate = PTHREAD_CREATE_JOINABLE; |
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87 | } else { |
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88 | attr->detachstate = PTHREAD_CREATE_DETACHED; |
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89 | } |
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90 | |
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91 | attr->affinityset = &attr->affinitysetpreallocated; |
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92 | attr->affinitysetsize = sizeof( attr->affinitysetpreallocated ); |
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93 | ok = _Scheduler_Get_affinity( |
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94 | the_thread, |
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95 | attr->affinitysetsize, |
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96 | attr->affinityset |
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97 | ); |
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98 | |
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99 | _Thread_State_release( the_thread, &lock_context ); |
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100 | return ok ? 0 : EINVAL; |
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101 | } |
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