1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Thread Queue Initialize |
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5 | * @ingroup ScoreThreadQ |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-2014. |
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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 | #include <rtems/score/threadqimpl.h> |
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22 | #include <rtems/score/chainimpl.h> |
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23 | #include <rtems/score/rbtreeimpl.h> |
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24 | #include <rtems/score/scheduler.h> |
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25 | #include <rtems/score/threadimpl.h> |
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26 | |
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27 | RBTree_Compare_result _Thread_queue_Compare_priority( |
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28 | const RBTree_Node *left, |
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29 | const RBTree_Node *right |
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30 | ) |
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31 | { |
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32 | Priority_Control left_priority = |
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33 | THREAD_RBTREE_NODE_TO_THREAD( left )->current_priority; |
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34 | Priority_Control right_priority = |
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35 | THREAD_RBTREE_NODE_TO_THREAD( right )->current_priority; |
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36 | |
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37 | /* |
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38 | * SuperCore priorities use lower numbers to indicate greater importance. |
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39 | */ |
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40 | if ( left_priority == right_priority ) |
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41 | return 0; |
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42 | if ( left_priority < right_priority ) |
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43 | return -1; |
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44 | return 1; |
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45 | } |
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46 | |
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47 | void _Thread_queue_Initialize( |
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48 | Thread_queue_Control *the_thread_queue, |
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49 | Thread_queue_Disciplines the_discipline, |
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50 | States_Control state, |
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51 | uint32_t timeout_status |
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52 | ) |
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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_BLOCKING_OPERATION_SYNCHRONIZED; |
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58 | |
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59 | if ( the_discipline == THREAD_QUEUE_DISCIPLINE_PRIORITY ) { |
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60 | _RBTree_Initialize_empty( &the_thread_queue->Queues.Priority ); |
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61 | } else { /* must be THREAD_QUEUE_DISCIPLINE_FIFO */ |
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62 | _Chain_Initialize_empty( &the_thread_queue->Queues.Fifo ); |
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63 | } |
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64 | |
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65 | } |
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