[e5ca54c9] | 1 | /** |
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| 2 | * @file |
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| 3 | * |
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| 4 | * @ingroup ScoreSchedulerEDF |
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| 5 | * |
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| 6 | * @brief EDF Scheduler Implementation |
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| 7 | */ |
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| 8 | |
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| 9 | /* |
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| 10 | * Copryight (c) 2011 Petr Benes. |
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| 11 | * Copyright (C) 2011 On-Line Applications Research Corporation (OAR). |
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| 12 | * |
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| 13 | * The license and distribution terms for this file may be |
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| 14 | * found in the file LICENSE in this distribution or at |
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[c499856] | 15 | * http://www.rtems.org/license/LICENSE. |
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[e5ca54c9] | 16 | */ |
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| 17 | |
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| 18 | #ifndef _RTEMS_SCORE_SCHEDULEREDFIMPL_H |
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| 19 | #define _RTEMS_SCORE_SCHEDULEREDFIMPL_H |
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| 20 | |
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| 21 | #include <rtems/score/scheduleredf.h> |
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| 22 | #include <rtems/score/schedulerimpl.h> |
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| 23 | |
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| 24 | #ifdef __cplusplus |
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| 25 | extern "C" { |
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| 26 | #endif |
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| 27 | |
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| 28 | /** |
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[e0eb07a] | 29 | * @addtogroup ScoreSchedulerEDF |
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[e5ca54c9] | 30 | * |
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| 31 | * @{ |
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| 32 | */ |
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| 33 | |
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[e1598a6] | 34 | RTEMS_INLINE_ROUTINE Scheduler_EDF_Context * |
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| 35 | _Scheduler_EDF_Get_context( const Scheduler_Control *scheduler ) |
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[3891983] | 36 | { |
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[2369b10] | 37 | return (Scheduler_EDF_Context *) _Scheduler_Get_context( scheduler ); |
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[3891983] | 38 | } |
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| 39 | |
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[08d9760] | 40 | RTEMS_INLINE_ROUTINE Scheduler_EDF_Node *_Scheduler_EDF_Thread_get_node( |
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[beab7329] | 41 | Thread_Control *the_thread |
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| 42 | ) |
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| 43 | { |
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[08d9760] | 44 | return (Scheduler_EDF_Node *) _Scheduler_Thread_get_node( the_thread ); |
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[beab7329] | 45 | } |
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| 46 | |
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[99fc1d1d] | 47 | RTEMS_INLINE_ROUTINE bool _Scheduler_EDF_Less( |
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| 48 | const void *left, |
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| 49 | const RBTree_Node *right |
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| 50 | ) |
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| 51 | { |
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| 52 | const Priority_Control *the_left; |
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| 53 | const Scheduler_EDF_Node *the_right; |
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| 54 | Priority_Control prio_left; |
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| 55 | Priority_Control prio_right; |
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| 56 | |
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| 57 | the_left = left; |
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| 58 | the_right = RTEMS_CONTAINER_OF( right, Scheduler_EDF_Node, Node ); |
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| 59 | |
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| 60 | prio_left = *the_left; |
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| 61 | prio_right = the_right->current_priority; |
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| 62 | |
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| 63 | return prio_left < prio_right; |
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| 64 | } |
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| 65 | |
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| 66 | RTEMS_INLINE_ROUTINE bool _Scheduler_EDF_Less_or_equal( |
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| 67 | const void *left, |
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| 68 | const RBTree_Node *right |
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| 69 | ) |
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| 70 | { |
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| 71 | const Priority_Control *the_left; |
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| 72 | const Scheduler_EDF_Node *the_right; |
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| 73 | Priority_Control prio_left; |
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| 74 | Priority_Control prio_right; |
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[b8f76fa] | 75 | |
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[99fc1d1d] | 76 | the_left = left; |
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| 77 | the_right = RTEMS_CONTAINER_OF( right, Scheduler_EDF_Node, Node ); |
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| 78 | |
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| 79 | prio_left = *the_left; |
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| 80 | prio_right = the_right->current_priority; |
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| 81 | |
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| 82 | return prio_left <= prio_right; |
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| 83 | } |
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[64939bc] | 84 | |
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[f39f667a] | 85 | RTEMS_INLINE_ROUTINE void _Scheduler_EDF_Enqueue( |
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[99fc1d1d] | 86 | Scheduler_EDF_Context *context, |
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| 87 | Scheduler_EDF_Node *node, |
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| 88 | Priority_Control current_priority |
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[f39f667a] | 89 | ) |
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| 90 | { |
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[99fc1d1d] | 91 | _RBTree_Insert_inline( |
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| 92 | &context->Ready, |
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| 93 | &node->Node, |
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| 94 | ¤t_priority, |
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| 95 | _Scheduler_EDF_Less |
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| 96 | ); |
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| 97 | } |
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[f39f667a] | 98 | |
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[99fc1d1d] | 99 | RTEMS_INLINE_ROUTINE void _Scheduler_EDF_Enqueue_first( |
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| 100 | Scheduler_EDF_Context *context, |
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| 101 | Scheduler_EDF_Node *node, |
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| 102 | Priority_Control current_priority |
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| 103 | ) |
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| 104 | { |
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| 105 | _RBTree_Insert_inline( |
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[64939bc] | 106 | &context->Ready, |
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| 107 | &node->Node, |
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[99fc1d1d] | 108 | ¤t_priority, |
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| 109 | _Scheduler_EDF_Less_or_equal |
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[64939bc] | 110 | ); |
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[f39f667a] | 111 | } |
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| 112 | |
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| 113 | RTEMS_INLINE_ROUTINE void _Scheduler_EDF_Extract( |
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[99fc1d1d] | 114 | Scheduler_EDF_Context *context, |
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| 115 | Scheduler_EDF_Node *node |
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| 116 | ) |
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| 117 | { |
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| 118 | _RBTree_Extract( &context->Ready, &node->Node ); |
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| 119 | } |
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| 120 | |
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| 121 | RTEMS_INLINE_ROUTINE void _Scheduler_EDF_Extract_body( |
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[f39f667a] | 122 | const Scheduler_Control *scheduler, |
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| 123 | Thread_Control *the_thread |
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| 124 | ) |
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| 125 | { |
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[99fc1d1d] | 126 | Scheduler_EDF_Context *context; |
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| 127 | Scheduler_EDF_Node *node; |
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[f39f667a] | 128 | |
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[99fc1d1d] | 129 | context = _Scheduler_EDF_Get_context( scheduler ); |
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| 130 | node = _Scheduler_EDF_Thread_get_node( the_thread ); |
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| 131 | |
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| 132 | _Scheduler_EDF_Extract( context, node ); |
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[f39f667a] | 133 | } |
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| 134 | |
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[e5ca54c9] | 135 | RTEMS_INLINE_ROUTINE void _Scheduler_EDF_Schedule_body( |
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[e1598a6] | 136 | const Scheduler_Control *scheduler, |
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| 137 | Thread_Control *the_thread, |
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| 138 | bool force_dispatch |
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[e5ca54c9] | 139 | ) |
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| 140 | { |
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[99fc1d1d] | 141 | Scheduler_EDF_Context *context; |
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| 142 | RBTree_Node *first; |
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| 143 | Scheduler_EDF_Node *node; |
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| 144 | |
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| 145 | (void) the_thread; |
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[e5ca54c9] | 146 | |
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[99fc1d1d] | 147 | context = _Scheduler_EDF_Get_context( scheduler ); |
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| 148 | first = _RBTree_Minimum( &context->Ready ); |
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| 149 | node = RTEMS_CONTAINER_OF( first, Scheduler_EDF_Node, Node ); |
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[e5ca54c9] | 150 | |
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[99fc1d1d] | 151 | _Scheduler_Update_heir( node->thread, force_dispatch ); |
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[e5ca54c9] | 152 | } |
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| 153 | |
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| 154 | /**@}*/ |
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| 155 | |
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| 156 | #ifdef __cplusplus |
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| 157 | } |
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| 158 | #endif |
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| 159 | |
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| 160 | #endif |
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| 161 | /* end of include file */ |
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