1 | /* |
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2 | * COPYRIGHT (c) 1989-2013. |
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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.org/license/LICENSE. |
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8 | */ |
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9 | |
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10 | #ifdef HAVE_CONFIG_H |
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11 | #include "config.h" |
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12 | #endif |
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13 | |
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14 | #define CONFIGURE_INIT |
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15 | #include "system.h" |
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16 | |
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17 | uint32_t Task_count; |
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18 | |
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19 | rtems_task test_init( |
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20 | rtems_task_argument argument |
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21 | ); |
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22 | |
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23 | rtems_task Middle_tasks( |
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24 | rtems_task_argument argument |
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25 | ); |
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26 | |
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27 | rtems_task High_task( |
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28 | rtems_task_argument argument |
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29 | ); |
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30 | |
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31 | int operation_count = OPERATION_COUNT; |
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32 | |
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33 | rtems_task Init( |
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34 | rtems_task_argument argument |
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35 | ) |
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36 | { |
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37 | rtems_id id; |
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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 16 ***" ); |
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43 | |
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44 | status = rtems_task_create( |
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45 | rtems_build_name( 'T', 'E', 'S', 'T' ), |
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46 | RTEMS_MAXIMUM_PRIORITY - 1u, |
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47 | RTEMS_MINIMUM_STACK_SIZE, |
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48 | RTEMS_DEFAULT_MODES, |
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49 | RTEMS_DEFAULT_ATTRIBUTES, |
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50 | &id |
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51 | ); |
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52 | directive_failed( status, "rtems_task_create of test_init" ); |
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53 | |
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54 | status = rtems_task_start( id, test_init, 0 ); |
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55 | directive_failed( status, "rtems_task_start of test_init" ); |
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56 | |
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57 | status = rtems_task_delete( RTEMS_SELF ); |
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58 | directive_failed( status, "rtems_task_delete of RTEMS_SELF" ); |
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59 | } |
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60 | |
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61 | rtems_task test_init( |
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62 | rtems_task_argument argument |
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63 | ) |
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64 | { |
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65 | rtems_task_priority priority; |
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66 | rtems_status_code status; |
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67 | int index; |
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68 | rtems_task_entry task_entry; |
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69 | |
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70 | /* As each task is started, it preempts this task and |
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71 | * performs a blocking rtems_event_receive. Upon completion of |
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72 | * this loop all created tasks are blocked. |
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73 | */ |
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74 | |
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75 | priority = RTEMS_MAXIMUM_PRIORITY - 2u; |
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76 | if ( OPERATION_COUNT > RTEMS_MAXIMUM_PRIORITY - 2u ) |
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77 | operation_count = (int) (RTEMS_MAXIMUM_PRIORITY - 2u); |
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78 | |
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79 | for( index = 0 ; index < operation_count ; index++ ) { |
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80 | status = rtems_task_create( |
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81 | rtems_build_name( 'M', 'I', 'D', ' ' ), |
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82 | priority, |
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83 | RTEMS_MINIMUM_STACK_SIZE, |
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84 | RTEMS_DEFAULT_MODES, |
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85 | RTEMS_DEFAULT_ATTRIBUTES, |
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86 | &Task_id[ index ] |
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87 | ); |
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88 | directive_failed( status, "rtems_task_create LOOP" ); |
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89 | |
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90 | if ( index == operation_count-1 ) task_entry = High_task; |
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91 | else task_entry = Middle_tasks; |
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92 | |
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93 | status = rtems_task_start( Task_id[ index ], task_entry, 0 ); |
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94 | directive_failed( status, "rtems_task_start LOOP" ); |
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95 | |
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96 | priority--; |
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97 | } |
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98 | |
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99 | Task_count = 0; |
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100 | |
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101 | benchmark_timer_initialize(); |
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102 | (void) rtems_event_send( Task_id[ Task_count ], RTEMS_EVENT_16 ); |
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103 | /* preempts task */ |
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104 | } |
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105 | |
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106 | rtems_task Middle_tasks( |
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107 | rtems_task_argument argument |
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108 | ) |
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109 | { |
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110 | rtems_event_set event_out; |
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111 | |
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112 | (void) rtems_event_receive( /* task blocks */ |
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113 | RTEMS_EVENT_16, |
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114 | RTEMS_DEFAULT_OPTIONS, |
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115 | RTEMS_NO_TIMEOUT, |
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116 | &event_out |
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117 | ); |
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118 | |
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119 | Task_count++; |
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120 | |
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121 | (void) rtems_event_send( /* preempts task */ |
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122 | Task_id[ Task_count ], |
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123 | RTEMS_EVENT_16 |
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124 | ); |
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125 | } |
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126 | |
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127 | rtems_task High_task( |
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128 | rtems_task_argument argument |
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129 | ) |
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130 | { |
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131 | rtems_event_set event_out; |
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132 | |
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133 | (void) rtems_event_receive( /* task blocks */ |
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134 | RTEMS_EVENT_16, |
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135 | RTEMS_DEFAULT_OPTIONS, |
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136 | RTEMS_NO_TIMEOUT, |
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137 | &event_out |
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138 | ); |
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139 | |
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140 | end_time = benchmark_timer_read(); |
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141 | |
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142 | put_time( |
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143 | "rtems_event_send: task readied preempts caller", |
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144 | end_time, |
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145 | operation_count - 1u, |
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146 | 0u, |
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147 | CALLING_OVERHEAD_EVENT_SEND |
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148 | ); |
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149 | |
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150 | puts( "*** END OF TEST 16 ***" ); |
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151 | rtems_test_exit( 0 ); |
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152 | } |
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