1 | /* |
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2 | * COPYRIGHT (c) 1989-2008. |
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3 | * On-Line Applications Research Corporation (OAR). |
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4 | * |
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5 | * The license and distribution terms for this file may be |
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6 | * found in the file LICENSE in this distribution or at |
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7 | * http://www.rtems.com/license/LICENSE. |
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8 | * |
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9 | * $Id$ |
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10 | */ |
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11 | |
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12 | #define CONFIGURE_INIT |
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13 | #include "system.h" |
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14 | |
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15 | uint32_t Task_count; |
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16 | rtems_task_priority Task_priority; |
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17 | |
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18 | rtems_task First_task( |
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19 | rtems_task_argument argument |
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20 | ); |
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21 | |
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22 | rtems_task Middle_tasks( |
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23 | rtems_task_argument argument |
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24 | ); |
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25 | |
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26 | rtems_task Last_task( |
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27 | rtems_task_argument argument |
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28 | ); |
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29 | |
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30 | int operation_count = OPERATION_COUNT; |
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31 | |
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32 | rtems_task Init( |
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33 | rtems_task_argument argument |
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34 | ) |
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35 | { |
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36 | rtems_task_entry task_entry; |
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37 | uint32_t index; |
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38 | rtems_status_code status; |
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39 | |
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40 | Print_Warning(); |
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41 | |
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42 | puts( "\n\n*** TIME TEST 17 ***" ); |
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43 | |
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44 | Task_priority = RTEMS_MAXIMUM_PRIORITY - 1; |
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45 | if ( OPERATION_COUNT > RTEMS_MAXIMUM_PRIORITY - 2 ) |
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46 | operation_count = RTEMS_MAXIMUM_PRIORITY - 2; |
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47 | |
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48 | for( index = 0; index < operation_count ; index++ ) { |
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49 | status = rtems_task_create( |
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50 | rtems_build_name( 'T', 'I', 'M', 'E' ), |
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51 | Task_priority, |
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52 | RTEMS_MINIMUM_STACK_SIZE, |
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53 | RTEMS_DEFAULT_MODES, |
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54 | RTEMS_DEFAULT_ATTRIBUTES, |
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55 | &Task_id[ index ] |
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56 | ); |
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57 | directive_failed( status, "rtems_task_create loop" ); |
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58 | |
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59 | if ( index == operation_count-1 ) task_entry = Last_task; |
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60 | else if ( index == 0 ) task_entry = First_task; |
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61 | else task_entry = Middle_tasks; |
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62 | |
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63 | status = rtems_task_start( Task_id[ index ], task_entry, 0 ); |
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64 | directive_failed( status, "rtems_task_start loop" ); |
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65 | } |
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66 | |
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67 | Task_count = 1; |
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68 | status = rtems_task_delete( RTEMS_SELF ); |
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69 | directive_failed( status, "rtems_task_delete of RTEMS_SELF" ); |
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70 | } |
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71 | |
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72 | rtems_task First_task( |
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73 | rtems_task_argument argument |
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74 | ) |
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75 | { |
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76 | rtems_task_priority previous_priority; |
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77 | |
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78 | benchmark_timer_initialize(); |
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79 | |
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80 | Task_priority--; |
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81 | Task_count++; |
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82 | |
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83 | (void) rtems_task_set_priority( |
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84 | Task_id[ Task_count ], |
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85 | Task_priority, |
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86 | &previous_priority |
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87 | ); |
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88 | } |
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89 | |
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90 | rtems_task Middle_tasks( |
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91 | rtems_task_argument argument |
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92 | ) |
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93 | { |
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94 | rtems_task_priority previous_priority; |
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95 | |
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96 | Task_priority--; |
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97 | Task_count++; |
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98 | |
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99 | (void) rtems_task_set_priority( |
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100 | Task_id[ Task_count ], |
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101 | Task_priority, |
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102 | &previous_priority |
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103 | ); |
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104 | } |
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105 | |
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106 | rtems_task Last_task( |
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107 | rtems_task_argument argument |
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108 | ) |
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109 | { |
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110 | uint32_t index; |
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111 | |
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112 | end_time = benchmark_timer_read(); |
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113 | |
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114 | benchmark_timer_initialize(); |
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115 | for ( index=1 ; index < operation_count ; index++ ) |
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116 | (void) benchmark_timer_empty_function(); |
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117 | overhead = benchmark_timer_read(); |
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118 | |
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119 | put_time( |
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120 | "rtems_task_set_priority: preempts caller", |
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121 | end_time, |
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122 | operation_count - 1, |
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123 | overhead, |
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124 | CALLING_OVERHEAD_TASK_SET_PRIORITY |
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125 | ); |
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126 | |
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127 | puts( "*** END OF TEST 17 ***" ); |
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128 | rtems_test_exit( 0 ); |
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129 | } |
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