[88e8cc4d] | 1 | /* |
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| 2 | * Test program to demonstrate reordering of threads on thread queues |
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| 3 | * when their priority changes. |
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| 4 | * |
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| 5 | * $Id$ |
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| 6 | */ |
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| 7 | |
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| 8 | #include <bsp.h> |
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| 9 | #include <stdio.h> |
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| 10 | |
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| 11 | /********************************************************************/ |
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| 12 | /* define this to use the RTEMS 4.5 scheme for object names */ |
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[23a368d] | 13 | /* #define TEST_ON_RTEMS_45 */ |
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[88e8cc4d] | 14 | |
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| 15 | /* define this to print the Id of the calling task */ |
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| 16 | /* #define TEST_ON_TASK_ID */ |
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| 17 | |
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| 18 | /********************************************************************/ |
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| 19 | |
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[496274b6] | 20 | #define CONFIGURE_INIT |
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| 21 | |
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[88e8cc4d] | 22 | #include <bsp.h> |
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| 23 | #include <stdio.h> |
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| 24 | #include "tmacros.h" |
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| 25 | |
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| 26 | rtems_task BlockingTasks(rtems_task_argument arg); |
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| 27 | |
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| 28 | /* |
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| 29 | * CallerName -- print the calling tasks name or id as configured |
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| 30 | */ |
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| 31 | const char *CallerName() |
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| 32 | { |
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| 33 | static char buffer[32]; |
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| 34 | #if defined(TEST_PRINT_TASK_ID) |
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| 35 | sprintf( buffer, "0x%08x -- %d", |
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[b5c6ecf] | 36 | rtems_task_self(), _Thread_Executing->current_priority ); |
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[88e8cc4d] | 37 | #else |
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| 38 | union { |
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| 39 | uint32_t u; |
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| 40 | unsigned char c[4]; |
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| 41 | } TempName; |
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| 42 | |
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| 43 | #if defined(TEST_ON_RTEMS_45) |
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| 44 | TempName.u = *(uint32_t *)_Thread_Executing->Object.name; |
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| 45 | #else |
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[23a368d] | 46 | TempName.u = _Thread_Executing->Object.name.name_u32; |
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[88e8cc4d] | 47 | #endif |
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| 48 | sprintf( buffer, "%c%c%c%c -- %d", |
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| 49 | TempName.c[0], TempName.c[1], TempName.c[2], TempName.c[3], |
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| 50 | _Thread_Executing->current_priority |
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| 51 | ); |
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| 52 | #endif |
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| 53 | return buffer; |
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| 54 | } |
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| 55 | |
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| 56 | #define NUMBER_OF_BLOCKING_TASKS 5 |
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| 57 | |
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| 58 | /* RTEMS ids of blocking threads */ |
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| 59 | rtems_id Blockers[NUMBER_OF_BLOCKING_TASKS]; |
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| 60 | |
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| 61 | /* Semaphore they are all blocked on */ |
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| 62 | rtems_id Semaphore; |
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| 63 | |
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| 64 | rtems_task BlockingTasks(rtems_task_argument arg) |
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| 65 | { |
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| 66 | rtems_status_code status; |
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| 67 | rtems_task_priority opri; |
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| 68 | rtems_task_priority npri; |
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| 69 | |
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| 70 | status = rtems_task_set_priority(RTEMS_SELF, RTEMS_CURRENT_PRIORITY, &opri); |
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| 71 | directive_failed( status, "rtems_task_set_priority" ); |
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| 72 | |
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| 73 | printf("semaphore_obtain -- BlockingTask %d @ pri=%d) blocks\n", arg, opri); |
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| 74 | status = rtems_semaphore_obtain(Semaphore, RTEMS_WAIT, RTEMS_NO_TIMEOUT); |
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| 75 | directive_failed( status, "rtems_semaphore_obtain" ); |
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| 76 | |
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| 77 | /* priority should have changed while blocked */ |
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| 78 | status = rtems_task_set_priority(RTEMS_SELF, RTEMS_CURRENT_PRIORITY, &npri); |
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| 79 | directive_failed( status, "rtems_task_set_priority" ); |
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| 80 | |
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| 81 | printf("semaphore_obtain -- BlockingTask %d @ pri=%d) returns\n", arg, npri); |
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| 82 | |
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| 83 | (void) rtems_task_delete( RTEMS_SELF ); |
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| 84 | } |
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| 85 | |
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| 86 | /*************************************************************************/ |
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| 87 | /********************** INITIALIZATION *********************/ |
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| 88 | /*************************************************************************/ |
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| 89 | |
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| 90 | rtems_task Init(rtems_task_argument ignored) |
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| 91 | { |
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| 92 | rtems_status_code status; |
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| 93 | int i; |
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| 94 | |
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| 95 | puts( "\n\n*** TEST 34 ***" ); |
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| 96 | |
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| 97 | /* Create synchronisation semaphore for LocalHwIsr -> Test Tasks */ |
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| 98 | status = rtems_semaphore_create( |
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| 99 | rtems_build_name ('S', 'E', 'M', '1'), /* name */ |
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| 100 | 0, /* initial count = 0 */ |
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| 101 | RTEMS_LOCAL | |
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| 102 | RTEMS_COUNTING_SEMAPHORE | |
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| 103 | RTEMS_PRIORITY, |
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| 104 | 0, |
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| 105 | &Semaphore); /* *id */ |
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| 106 | directive_failed( status, "rtems_semaphore_create" ); |
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| 107 | |
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| 108 | /* Create and start all tasks in the test */ |
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| 109 | |
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| 110 | for (i = 0; i < NUMBER_OF_BLOCKING_TASKS; i++) { |
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| 111 | status = rtems_task_create( |
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| 112 | rtems_build_name('B','L','K','0'+i), /* Name */ |
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| 113 | 2+i, /* Priority */ |
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| 114 | RTEMS_MINIMUM_STACK_SIZE*2, /* Stack size (8KB) */ |
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| 115 | RTEMS_DEFAULT_MODES | RTEMS_NO_ASR, /* Mode */ |
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| 116 | RTEMS_DEFAULT_ATTRIBUTES | RTEMS_FLOATING_POINT, /* Attributes */ |
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| 117 | &Blockers[i]); /* Assigned ID */ |
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| 118 | directive_failed( status, "rtems_task_create (BLKn)" ); |
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| 119 | |
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| 120 | printf( "Blockers[%d] Id = 0x%08x\n", i, Blockers[i] ); |
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| 121 | status = rtems_task_start(Blockers[i], BlockingTasks, i); |
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| 122 | directive_failed( status, "rtems_task_start (BLKn)" ); |
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| 123 | } |
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| 124 | |
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| 125 | status = rtems_task_wake_after( 100 ); |
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| 126 | directive_failed( status, "rtems_task_wake_after" ); |
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| 127 | |
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| 128 | puts( "rtems_task_set_priority -- invert priorities of tasks" ); |
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| 129 | for (i = 0; i < NUMBER_OF_BLOCKING_TASKS; i++) { |
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| 130 | rtems_task_priority opri; |
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| 131 | rtems_task_priority npri= 2 + NUMBER_OF_BLOCKING_TASKS - i - 1; |
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| 132 | |
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| 133 | status = rtems_task_set_priority(Blockers[i], npri, &opri); |
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| 134 | directive_failed( status, "rtems_task_set_priority" ); |
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| 135 | } |
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| 136 | |
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| 137 | for (i = 0; i < NUMBER_OF_BLOCKING_TASKS; i++) { |
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| 138 | puts( "rtems_semaphore_release -- OK" ); |
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| 139 | status = rtems_semaphore_release(Semaphore); |
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| 140 | directive_failed( status, "rtems_semaphore_release" ); |
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| 141 | |
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| 142 | status = rtems_task_wake_after( 100 ); |
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| 143 | directive_failed( status, "rtems_task_wake_after" ); |
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| 144 | } |
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| 145 | |
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| 146 | /* exit the test */ |
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| 147 | puts( "*** END OF TEST 34 ***" ); |
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| 148 | exit(0); |
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| 149 | } |
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| 150 | |
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| 151 | /* configuration information */ |
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| 152 | |
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[67293f6] | 153 | #define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER |
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| 154 | #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER |
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[88e8cc4d] | 155 | |
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| 156 | #define CONFIGURE_RTEMS_INIT_TASKS_TABLE |
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| 157 | |
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[2ff6ada3] | 158 | #define CONFIGURE_EXTRA_TASK_STACKS \ |
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| 159 | (RTEMS_MINIMUM_STACK_SIZE * NUMBER_OF_BLOCKING_TASKS) |
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[88e8cc4d] | 160 | |
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| 161 | #define CONFIGURE_MAXIMUM_TASKS 6 |
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| 162 | #define CONFIGURE_MAXIMUM_SEMAPHORES 1 |
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| 163 | |
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| 164 | #include <rtems/confdefs.h> |
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| 165 | |
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| 166 | /* end of file */ |
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