[ac7d5ef0] | 1 | /* |
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| 2 | * |
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[08311cc3] | 3 | * COPYRIGHT (c) 1989-1999. |
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[ac7d5ef0] | 4 | * On-Line Applications Research Corporation (OAR). |
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| 5 | * |
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[98e4ebf5] | 6 | * The license and distribution terms for this file may be |
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| 7 | * found in the file LICENSE in this distribution or at |
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[03f2154e] | 8 | * http://www.OARcorp.com/rtems/license.html. |
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[ac7d5ef0] | 9 | * |
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| 10 | * $Id$ |
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| 11 | */ |
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| 12 | |
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[9700578] | 13 | /* |
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| 14 | * WARNING!!!!!!!!! |
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| 15 | * |
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| 16 | * THIS TEST USES INTERNAL RTEMS VARIABLES!!! |
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| 17 | */ |
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| 18 | |
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[3a4ae6c] | 19 | #define TEST_INIT |
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[ac7d5ef0] | 20 | #include "system.h" |
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| 21 | |
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| 22 | #include <bsp.h> |
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| 23 | |
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| 24 | rtems_task Task_1( |
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| 25 | rtems_task_argument argument |
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| 26 | ); |
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| 27 | |
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| 28 | rtems_task Task_2( |
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| 29 | rtems_task_argument argument |
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| 30 | ); |
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| 31 | |
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| 32 | volatile rtems_unsigned32 Interrupt_occurred; |
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| 33 | volatile rtems_unsigned32 Interrupt_enter_time, Interrupt_enter_nested_time; |
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| 34 | volatile rtems_unsigned32 Interrupt_return_time, Interrupt_return_nested_time; |
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| 35 | rtems_unsigned32 Interrupt_nest; |
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| 36 | |
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| 37 | rtems_isr Isr_handler( |
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| 38 | rtems_vector_number vector |
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| 39 | ); |
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| 40 | |
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| 41 | rtems_task Init( |
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| 42 | rtems_task_argument argument |
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| 43 | ) |
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| 44 | { |
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| 45 | rtems_status_code status; |
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| 46 | |
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[3a4ae6c] | 47 | Print_Warning(); |
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| 48 | |
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[ac7d5ef0] | 49 | puts( "\n\n*** TIME TEST 27 ***" ); |
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| 50 | |
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| 51 | status = rtems_task_create( |
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| 52 | rtems_build_name( 'T', 'A', '1', ' ' ), |
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| 53 | 254, |
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[3652ad35] | 54 | RTEMS_MINIMUM_STACK_SIZE, |
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[ac7d5ef0] | 55 | RTEMS_DEFAULT_MODES, |
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| 56 | RTEMS_DEFAULT_ATTRIBUTES, |
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| 57 | &Task_id[ 1 ] |
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| 58 | ); |
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| 59 | directive_failed( status, "rtems_task_create Task_1" ); |
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| 60 | |
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| 61 | status = rtems_task_start( Task_id[ 1 ], Task_1, 0 ); |
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| 62 | directive_failed( status, "rtems_task_start Task_1" ); |
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| 63 | |
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| 64 | status = rtems_task_create( |
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| 65 | rtems_build_name( 'T', 'A', '2', ' ' ), |
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| 66 | 254, |
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[3652ad35] | 67 | RTEMS_MINIMUM_STACK_SIZE, |
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[ac7d5ef0] | 68 | RTEMS_DEFAULT_MODES, |
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| 69 | RTEMS_DEFAULT_ATTRIBUTES, |
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| 70 | &Task_id[ 2 ] |
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| 71 | ); |
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| 72 | directive_failed( status, "rtems_task_create of Task_2" ); |
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| 73 | |
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| 74 | status = rtems_task_start( Task_id[ 2 ], Task_2, 0 ); |
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| 75 | directive_failed( status, "rtems_task_start of Task_2" ); |
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| 76 | |
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| 77 | status = rtems_task_delete( RTEMS_SELF ); |
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| 78 | directive_failed( status, "rtems_task_delete of RTEMS_SELF" ); |
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| 79 | } |
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| 80 | |
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| 81 | rtems_task Task_1( |
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| 82 | rtems_task_argument argument |
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| 83 | ) |
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| 84 | { |
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[ea74482] | 85 | Install_tm27_vector( Isr_handler ); |
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[ac7d5ef0] | 86 | |
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[ea74482] | 87 | /* |
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| 88 | * No preempt .. no nesting |
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| 89 | */ |
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[ac7d5ef0] | 90 | |
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[ea74482] | 91 | Interrupt_nest = 0; |
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| 92 | |
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| 93 | _Thread_Dispatch_disable_level = 0; |
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[ac7d5ef0] | 94 | |
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| 95 | Interrupt_occurred = 0; |
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| 96 | Timer_initialize(); |
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| 97 | Cause_tm27_intr(); |
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| 98 | /* goes to Isr_handler */ |
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| 99 | |
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| 100 | #if (MUST_WAIT_FOR_INTERRUPT == 1) |
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| 101 | while ( Interrupt_occurred == 0 ); |
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| 102 | #endif |
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| 103 | Interrupt_return_time = Read_timer(); |
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| 104 | |
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| 105 | put_time( |
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[5c491aef] | 106 | "interrupt entry overhead: returns to interrupted task", |
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[ea74482] | 107 | Interrupt_enter_time, |
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[ac7d5ef0] | 108 | 1, |
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| 109 | 0, |
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| 110 | 0 |
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| 111 | ); |
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| 112 | |
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| 113 | put_time( |
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[5c491aef] | 114 | "interrupt exit overhead: returns to interrupted task", |
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[ea74482] | 115 | Interrupt_return_time, |
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[ac7d5ef0] | 116 | 1, |
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| 117 | 0, |
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| 118 | 0 |
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| 119 | ); |
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| 120 | |
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[ea74482] | 121 | /* |
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| 122 | * No preempt .. nested |
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| 123 | */ |
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[ac7d5ef0] | 124 | |
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[ea74482] | 125 | _Thread_Dispatch_disable_level = 1; |
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| 126 | |
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| 127 | Interrupt_nest = 1; |
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[ac7d5ef0] | 128 | |
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| 129 | Interrupt_occurred = 0; |
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| 130 | Timer_initialize(); |
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| 131 | Cause_tm27_intr(); |
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| 132 | /* goes to Isr_handler */ |
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| 133 | |
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| 134 | #if (MUST_WAIT_FOR_INTERRUPT == 1) |
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| 135 | while ( Interrupt_occurred == 0 ); |
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| 136 | #endif |
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| 137 | Interrupt_return_time = Read_timer(); |
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| 138 | |
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| 139 | put_time( |
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[5c491aef] | 140 | "interrupt entry overhead: returns to nested interrupt", |
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[ea74482] | 141 | Interrupt_enter_nested_time, |
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[ac7d5ef0] | 142 | 1, |
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| 143 | 0, |
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| 144 | 0 |
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| 145 | ); |
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| 146 | |
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| 147 | put_time( |
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[5c491aef] | 148 | "interrupt exit overhead: returns to nested interrupt", |
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[ea74482] | 149 | Interrupt_return_nested_time, |
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[ac7d5ef0] | 150 | 1, |
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| 151 | 0, |
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| 152 | 0 |
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| 153 | ); |
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| 154 | |
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[ea74482] | 155 | /* |
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| 156 | * Does a preempt .. not nested |
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| 157 | */ |
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| 158 | |
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[ac7d5ef0] | 159 | _Thread_Dispatch_disable_level = 0; |
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| 160 | |
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| 161 | _Thread_Heir = (rtems_tcb *) _Thread_Ready_chain[254].last; |
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| 162 | |
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| 163 | _Context_Switch_necessary = 1; |
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| 164 | |
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| 165 | Interrupt_occurred = 0; |
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| 166 | Timer_initialize(); |
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| 167 | Cause_tm27_intr(); |
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[9700578] | 168 | |
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| 169 | /* |
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| 170 | * goes to Isr_handler and then returns |
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| 171 | */ |
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| 172 | |
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| 173 | puts( "*** END OF TEST 27 ***" ); |
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| 174 | exit( 0 ); |
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[ac7d5ef0] | 175 | } |
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| 176 | |
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[9700578] | 177 | /* |
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| 178 | * NOTE: When this task is executing, some of the assumptions made |
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| 179 | * regarding the placement of the currently executing task's TCB |
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| 180 | * on the ready chains have been violated. At least the assumption |
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| 181 | * that this task is at the head of the chain for its priority |
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| 182 | * has been violated. |
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| 183 | */ |
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| 184 | |
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[ac7d5ef0] | 185 | rtems_task Task_2( |
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| 186 | rtems_task_argument argument |
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| 187 | ) |
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| 188 | { |
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| 189 | #if (MUST_WAIT_FOR_INTERRUPT == 1) |
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| 190 | while ( Interrupt_occurred == 0 ); |
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| 191 | #endif |
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| 192 | end_time = Read_timer(); |
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| 193 | |
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| 194 | put_time( |
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[5c491aef] | 195 | "interrupt entry overhead: returns to preempting task", |
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[ac7d5ef0] | 196 | Interrupt_enter_time, |
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| 197 | 1, |
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| 198 | 0, |
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| 199 | 0 |
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| 200 | ); |
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| 201 | |
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| 202 | put_time( |
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[5c491aef] | 203 | "interrupt exit overhead: returns to preempting task", |
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[ac7d5ef0] | 204 | end_time, |
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| 205 | 1, |
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| 206 | 0, |
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| 207 | 0 |
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| 208 | ); |
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| 209 | |
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[9700578] | 210 | fflush( stdout ); |
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| 211 | |
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| 212 | /* |
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| 213 | * Switch back to the other task to exit the test. |
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| 214 | */ |
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| 215 | |
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| 216 | _Thread_Dispatch_disable_level = 0; |
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| 217 | |
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| 218 | _Thread_Heir = (rtems_tcb *) _Thread_Ready_chain[254].first; |
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| 219 | |
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| 220 | _Context_Switch_necessary = 1; |
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| 221 | |
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| 222 | _Thread_Dispatch(); |
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| 223 | |
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[ac7d5ef0] | 224 | } |
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| 225 | |
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| 226 | /* The Isr_handler() and Isr_handler_inner() routines are structured |
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| 227 | * so that there will be as little entry overhead as possible included |
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| 228 | * in the interrupt entry time. |
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| 229 | */ |
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| 230 | |
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| 231 | void Isr_handler_inner( void ); |
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| 232 | |
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| 233 | rtems_isr Isr_handler( |
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| 234 | rtems_vector_number vector |
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| 235 | ) |
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| 236 | { |
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| 237 | end_time = Read_timer(); |
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| 238 | |
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| 239 | Interrupt_occurred = 1; |
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| 240 | Isr_handler_inner(); |
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| 241 | } |
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| 242 | |
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| 243 | void Isr_handler_inner( void ) |
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| 244 | { |
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| 245 | |
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| 246 | /*enable_tracing();*/ |
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| 247 | Clear_tm27_intr(); |
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| 248 | switch ( Interrupt_nest ) { |
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| 249 | case 0: |
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| 250 | Interrupt_enter_time = end_time; |
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| 251 | break; |
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| 252 | case 1: |
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| 253 | Interrupt_enter_time = end_time; |
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| 254 | Interrupt_nest = 2; |
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| 255 | Interrupt_occurred = 0; |
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| 256 | Lower_tm27_intr(); |
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| 257 | Timer_initialize(); |
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| 258 | Cause_tm27_intr(); |
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| 259 | /* goes to a nested copy of Isr_handler */ |
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| 260 | #if (MUST_WAIT_FOR_INTERRUPT == 1) |
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| 261 | while ( Interrupt_occurred == 0 ); |
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| 262 | #endif |
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| 263 | Interrupt_return_nested_time = Read_timer(); |
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| 264 | break; |
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| 265 | case 2: |
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| 266 | Interrupt_enter_nested_time = end_time; |
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| 267 | break; |
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| 268 | } |
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| 269 | |
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| 270 | Timer_initialize(); |
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| 271 | } |
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