1 | /* |
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2 | * Thread Handler |
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3 | * |
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4 | * |
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5 | * COPYRIGHT (c) 1989-1999. |
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6 | * On-Line Applications Research Corporation (OAR). |
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7 | * |
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8 | * The license and distribution terms for this file may be |
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9 | * found in found in the file LICENSE in this distribution or at |
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10 | * http://www.OARcorp.com/rtems/license.html. |
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11 | * |
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12 | * $Id$ |
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13 | */ |
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14 | |
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15 | #include <rtems/system.h> |
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16 | #include <rtems/score/apiext.h> |
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17 | #include <rtems/score/context.h> |
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18 | #include <rtems/score/interr.h> |
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19 | #include <rtems/score/isr.h> |
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20 | #include <rtems/score/object.h> |
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21 | #include <rtems/score/priority.h> |
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22 | #include <rtems/score/states.h> |
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23 | #include <rtems/score/sysstate.h> |
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24 | #include <rtems/score/thread.h> |
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25 | #include <rtems/score/threadq.h> |
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26 | #include <rtems/score/userext.h> |
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27 | #include <rtems/score/wkspace.h> |
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28 | |
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29 | /*PAGE |
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30 | * |
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31 | * _Thread_Get |
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32 | * |
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33 | * NOTE: If we are not using static inlines, this must be a real |
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34 | * subroutine call. |
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35 | * |
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36 | * NOTE: XXX... This routine may be able to be optimized. |
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37 | */ |
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38 | |
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39 | #ifndef USE_INLINES |
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40 | |
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41 | Thread_Control *_Thread_Get ( |
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42 | Objects_Id id, |
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43 | Objects_Locations *location |
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44 | ) |
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45 | { |
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46 | unsigned32 the_api; |
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47 | unsigned32 the_class; |
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48 | Objects_Information *information; |
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49 | Thread_Control *tp = (Thread_Control *) 0; |
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50 | |
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51 | if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) ) { |
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52 | _Thread_Disable_dispatch(); |
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53 | *location = OBJECTS_LOCAL; |
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54 | tp = _Thread_Executing; |
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55 | goto done; |
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56 | } |
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57 | |
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58 | the_api = _Objects_Get_API( id ); |
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59 | if ( the_api && the_api > OBJECTS_APIS_LAST ) { |
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60 | *location = OBJECTS_ERROR; |
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61 | goto done; |
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62 | } |
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63 | |
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64 | the_class = _Objects_Get_class( id ); |
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65 | if ( the_class != 1 ) { /* threads are always first class :) */ |
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66 | *location = OBJECTS_ERROR; |
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67 | goto done; |
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68 | } |
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69 | |
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70 | information = _Objects_Information_table[ the_api ][ the_class ]; |
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71 | |
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72 | if ( !information ) { |
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73 | *location = OBJECTS_ERROR; |
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74 | goto done; |
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75 | } |
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76 | |
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77 | tp = (Thread_Control *) _Objects_Get( information, id, location ); |
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78 | |
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79 | done: |
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80 | return tp; |
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81 | } |
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82 | |
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83 | #endif |
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