1 | /* |
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2 | * Semaphore Manager |
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3 | * |
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4 | * DESCRIPTION: |
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5 | * |
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6 | * This package is the implementation of the Semaphore Manager. |
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7 | * This manager utilizes standard Dijkstra counting semaphores to provide |
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8 | * synchronization and mutual exclusion capabilities. |
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9 | * |
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10 | * Directives provided are: |
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11 | * |
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12 | * + create a semaphore |
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13 | * + get an ID of a semaphore |
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14 | * + delete a semaphore |
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15 | * + acquire a semaphore |
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16 | * + release a semaphore |
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17 | * |
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18 | * COPYRIGHT (c) 1989-1999. |
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19 | * On-Line Applications Research Corporation (OAR). |
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20 | * |
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21 | * The license and distribution terms for this file may be |
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22 | * found in the file LICENSE in this distribution or at |
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23 | * http://www.rtems.com/license/LICENSE. |
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24 | * |
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25 | * $Id$ |
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26 | */ |
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27 | |
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28 | #if HAVE_CONFIG_H |
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29 | #include "config.h" |
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30 | #endif |
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31 | |
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32 | #include <rtems/system.h> |
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33 | #include <rtems/rtems/status.h> |
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34 | #include <rtems/rtems/support.h> |
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35 | #include <rtems/rtems/attr.h> |
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36 | #include <rtems/score/isr.h> |
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37 | #include <rtems/score/object.h> |
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38 | #include <rtems/rtems/options.h> |
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39 | #include <rtems/rtems/sem.h> |
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40 | #include <rtems/score/coremutex.h> |
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41 | #include <rtems/score/coresem.h> |
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42 | #include <rtems/score/states.h> |
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43 | #include <rtems/score/thread.h> |
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44 | #include <rtems/score/threadq.h> |
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45 | #if defined(RTEMS_MULTIPROCESSING) |
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46 | #include <rtems/score/mpci.h> |
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47 | #endif |
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48 | #include <rtems/score/sysstate.h> |
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49 | |
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50 | #include <rtems/score/interr.h> |
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51 | |
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52 | /*PAGE |
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53 | * |
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54 | * rtems_semaphore_ident |
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55 | * |
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56 | * This directive returns the system ID associated with |
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57 | * the semaphore name. |
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58 | * |
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59 | * Input parameters: |
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60 | * name - user defined semaphore name |
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61 | * node - node(s) to be searched |
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62 | * id - pointer to semaphore id |
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63 | * |
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64 | * Output parameters: |
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65 | * *id - semaphore id |
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66 | * RTEMS_SUCCESSFUL - if successful |
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67 | * error code - if unsuccessful |
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68 | */ |
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69 | |
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70 | rtems_status_code rtems_semaphore_ident( |
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71 | rtems_name name, |
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72 | uint32_t node, |
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73 | Objects_Id *id |
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74 | ) |
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75 | { |
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76 | Objects_Name_or_id_lookup_errors status; |
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77 | |
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78 | status = _Objects_Name_to_id( |
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79 | &_Semaphore_Information, |
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80 | (Objects_Name) name, |
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81 | node, |
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82 | id |
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83 | ); |
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84 | |
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85 | return _Status_Object_name_errors_to_status[ status ]; |
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86 | } |
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