1 | /* |
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2 | * ITRON 3.0 Mailbox Manager |
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3 | * |
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4 | * COPYRIGHT (c) 1989-1999. |
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5 | * On-Line Applications Research Corporation (OAR). |
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6 | * |
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7 | * The license and distribution terms for this file may be |
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8 | * found in the file LICENSE in this distribution or at |
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9 | * http://www.OARcorp.com/rtems/license.html. |
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10 | * |
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11 | * $Id$ |
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12 | */ |
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13 | |
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14 | #include <itron.h> |
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15 | |
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16 | #include <rtems/itron/mbox.h> |
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17 | #include <rtems/itron/task.h> |
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18 | |
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19 | /* |
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20 | * cre_mbx - Create Mailbox |
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21 | * |
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22 | * Creates a Mailbox according to the following spec: |
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23 | * |
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24 | * ------Parameters------------------------- |
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25 | * ID mbxid MailboxID |
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26 | * T_CMBX *pk_cmbx Packet to Create Mailbox |
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27 | * ----------------------------------------- |
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28 | * -*pk_cmbx members*- |
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29 | * VP exinf ExtendedInformation |
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30 | * ATR mbxatr MailboxAttributes |
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31 | * (the use of the following information |
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32 | * is implementation dependent) |
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33 | * INT bufcnt BufferMessageCount |
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34 | * (CPU and/or implementation-dependent information |
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35 | * may also be included) |
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36 | * |
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37 | * ----Return Parameters-------------------- |
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38 | * ER ercd ErrorCode |
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39 | * ----------------------------------------- |
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40 | * |
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41 | * |
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42 | * ----C Language Interface----------------- |
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43 | * ER ercd = cre_mbx ( ID mbxid, T_CMBX *pk_cmbx ) ; |
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44 | * ----------------------------------------- |
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45 | * |
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46 | */ |
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47 | |
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48 | ER cre_mbx( |
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49 | ID mbxid, |
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50 | T_CMBX *pk_cmbx |
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51 | ) |
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52 | { |
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53 | register ITRON_Mailbox_Control *the_mailbox; |
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54 | CORE_message_queue_Attributes the_mailbox_attributes; |
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55 | |
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56 | if ( !pk_cmbx ) |
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57 | return E_PAR; |
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58 | |
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59 | if ((pk_cmbx->mbxatr & (TA_TPRI | TA_MPRI)) != 0 ) |
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60 | return E_RSATR; |
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61 | |
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62 | _Thread_Disable_dispatch(); /* protects object pointer */ |
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63 | |
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64 | the_mailbox = _ITRON_Mailbox_Allocate( mbxid ); |
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65 | if ( !the_mailbox ) { |
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66 | _Thread_Enable_dispatch(); |
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67 | return _ITRON_Mailbox_Clarify_allocation_id_error( mbxid ); |
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68 | } |
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69 | |
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70 | the_mailbox->count = pk_cmbx->bufcnt; |
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71 | if (pk_cmbx->mbxatr & TA_MPRI) |
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72 | the_mailbox->do_message_priority = TRUE; |
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73 | else |
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74 | the_mailbox->do_message_priority = FALSE; |
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75 | |
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76 | if (pk_cmbx->mbxatr & TA_TPRI) |
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77 | the_mailbox_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_PRIORITY; |
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78 | else |
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79 | the_mailbox_attributes.discipline = CORE_MESSAGE_QUEUE_DISCIPLINES_FIFO; |
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80 | |
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81 | if ( !_CORE_message_queue_Initialize( |
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82 | &the_mailbox->message_queue, |
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83 | OBJECTS_ITRON_MAILBOXES, |
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84 | &the_mailbox_attributes, |
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85 | the_mailbox->count, |
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86 | sizeof(T_MSG *), |
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87 | NULL ) ) { /* Multiprocessing not supported */ |
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88 | _ITRON_Mailbox_Free(the_mailbox); |
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89 | _ITRON_return_errorno( E_OBJ ); |
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90 | } |
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91 | |
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92 | _ITRON_Objects_Open( &_ITRON_Mailbox_Information, &the_mailbox->Object ); |
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93 | |
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94 | /* |
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95 | * If multiprocessing were supported, this is where we would announce |
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96 | * the existence of the semaphore to the rest of the system. |
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97 | */ |
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98 | |
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99 | #if defined(RTEMS_MULTIPROCESSING) |
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100 | #endif |
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101 | |
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102 | _ITRON_return_errorno( E_OK ); |
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103 | } |
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