[ac7d5ef0] | 1 | /* tqdata.h |
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| 2 | * |
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| 3 | * This include file contains all the constants and structures |
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| 4 | * needed to declare a thread queue. |
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| 5 | * |
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| 6 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 7 | * On-Line Applications Research Corporation (OAR). |
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| 8 | * All rights assigned to U.S. Government, 1994. |
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| 9 | * |
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| 10 | * This material may be reproduced by or for the U.S. Government pursuant |
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| 11 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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| 12 | * notice must appear in all copies of this file and its derivatives. |
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| 13 | * |
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[da6375b] | 14 | * $Id$ |
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[ac7d5ef0] | 15 | */ |
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| 16 | |
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[3a4ae6c] | 17 | #ifndef __THREAD_QUEUE_DATA_h |
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| 18 | #define __THREAD_QUEUE_DATA_h |
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[ac7d5ef0] | 19 | |
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| 20 | #ifdef __cplusplus |
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| 21 | extern "C" { |
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| 22 | #endif |
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| 23 | |
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[5e9b32b] | 24 | #include <rtems/score/chain.h> |
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| 25 | #include <rtems/score/priority.h> |
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| 26 | #include <rtems/score/states.h> |
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[ac7d5ef0] | 27 | |
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| 28 | /* |
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| 29 | * The following enumerated type details all of the disciplines |
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| 30 | * supported by the Thread Queue Handler. |
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| 31 | */ |
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| 32 | |
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| 33 | typedef enum { |
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[3a4ae6c] | 34 | THREAD_QUEUE_DISCIPLINE_FIFO, /* FIFO queue discipline */ |
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| 35 | THREAD_QUEUE_DISCIPLINE_PRIORITY /* PRIORITY queue discipline */ |
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[ac7d5ef0] | 36 | } Thread_queue_Disciplines; |
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| 37 | |
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| 38 | /* |
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| 39 | * The following record defines the control block used |
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| 40 | * to manage each thread. |
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| 41 | */ |
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| 42 | |
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| 43 | #define TASK_QUEUE_DATA_NUMBER_OF_PRIORITY_HEADERS 4 /* # of pri groups */ |
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| 44 | |
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| 45 | typedef struct { |
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| 46 | union { |
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| 47 | Chain_Control Fifo; /* FIFO discipline list */ |
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| 48 | Chain_Control Priority[TASK_QUEUE_DATA_NUMBER_OF_PRIORITY_HEADERS]; |
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| 49 | /* priority discipline list */ |
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| 50 | } Queues; |
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| 51 | boolean sync; /* alloc/dealloc critical section */ |
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| 52 | Thread_queue_Disciplines discipline; /* queue discipline */ |
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| 53 | States_Control state; /* state of threads on Thread_q */ |
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[3a4ae6c] | 54 | unsigned32 timeout_status; |
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[5e9b32b] | 55 | unsigned32 count; |
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[ac7d5ef0] | 56 | } Thread_queue_Control; |
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| 57 | |
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| 58 | /* |
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| 59 | * _Thread_queue_Header_number |
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| 60 | * |
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| 61 | * DESCRIPTION: |
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| 62 | * |
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| 63 | * This function returns the index of the priority chain on which |
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| 64 | * a thread of the_priority should be placed. |
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| 65 | */ |
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| 66 | |
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| 67 | STATIC INLINE unsigned32 _Thread_queue_Header_number ( |
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[7f6a24ab] | 68 | Priority_Control the_priority |
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[ac7d5ef0] | 69 | ); |
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| 70 | |
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| 71 | /* |
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| 72 | * _Thread_queue_Is_reverse_search |
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| 73 | * |
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| 74 | * DESCRIPTION: |
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| 75 | * |
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| 76 | * This function returns TRUE if the_priority indicates that the |
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| 77 | * enqueue search should start at the front of this priority |
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| 78 | * group chain, and FALSE if the search should start at the rear. |
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| 79 | */ |
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| 80 | |
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| 81 | STATIC INLINE boolean _Thread_queue_Is_reverse_search ( |
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[7f6a24ab] | 82 | Priority_Control the_priority |
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[ac7d5ef0] | 83 | ); |
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| 84 | |
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[5e9b32b] | 85 | #include <rtems/score/tqdata.inl> |
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[ac7d5ef0] | 86 | |
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| 87 | #ifdef __cplusplus |
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| 88 | } |
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| 89 | #endif |
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| 90 | |
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| 91 | #endif |
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| 92 | /* end of include file */ |
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