1 | /* |
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2 | * Thread Queue 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 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/chain.h> |
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17 | #include <rtems/score/isr.h> |
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18 | #include <rtems/score/object.h> |
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19 | #include <rtems/score/states.h> |
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20 | #include <rtems/score/thread.h> |
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21 | #include <rtems/score/threadq.h> |
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22 | #include <rtems/score/tqdata.h> |
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23 | |
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24 | /*PAGE |
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25 | * |
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26 | * _Thread_queue_Initialize |
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27 | * |
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28 | * This routine initializes the specified threadq. |
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29 | * |
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30 | * Input parameters: |
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31 | * the_thread_queue - pointer to a threadq header |
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32 | * the_class - class of the object to which this belongs |
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33 | * discipline - queueing discipline |
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34 | * state - state of waiting threads |
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35 | * proxy_extract_callout - MP specific callout |
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36 | * timeout_status - return on a timeout |
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37 | * |
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38 | * Output parameters: NONE |
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39 | */ |
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40 | |
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41 | void _Thread_queue_Initialize( |
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42 | Thread_queue_Control *the_thread_queue, |
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43 | Objects_Classes the_class, |
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44 | Thread_queue_Disciplines the_discipline, |
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45 | States_Control state, |
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46 | Thread_queue_Extract_callout proxy_extract_callout, |
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47 | unsigned32 timeout_status |
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48 | ) |
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49 | { |
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50 | unsigned32 index; |
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51 | |
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52 | _Thread_queue_Extract_table[ the_class ] = proxy_extract_callout; |
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53 | |
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54 | the_thread_queue->state = state; |
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55 | the_thread_queue->discipline = the_discipline; |
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56 | the_thread_queue->timeout_status = timeout_status; |
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57 | the_thread_queue->sync_state = THREAD_QUEUE_SYNCHRONIZED; |
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58 | |
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59 | switch ( the_discipline ) { |
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60 | case THREAD_QUEUE_DISCIPLINE_FIFO: |
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61 | _Chain_Initialize_empty( &the_thread_queue->Queues.Fifo ); |
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62 | break; |
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63 | case THREAD_QUEUE_DISCIPLINE_PRIORITY: |
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64 | for( index=0 ; |
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65 | index < TASK_QUEUE_DATA_NUMBER_OF_PRIORITY_HEADERS ; |
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66 | index++) |
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67 | _Chain_Initialize_empty( &the_thread_queue->Queues.Priority[index] ); |
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68 | break; |
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69 | } |
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70 | |
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71 | } |
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