1 | /* Task_2 |
---|
2 | * |
---|
3 | * This routine serves as a test task. Plays with priorities to verify |
---|
4 | * that the highest priority task is always executed. |
---|
5 | * |
---|
6 | * Input parameters: |
---|
7 | * argument - task argument |
---|
8 | * |
---|
9 | * Output parameters: NONE |
---|
10 | * |
---|
11 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
---|
12 | * On-Line Applications Research Corporation (OAR). |
---|
13 | * All rights assigned to U.S. Government, 1994. |
---|
14 | * |
---|
15 | * This material may be reproduced by or for the U.S. Government pursuant |
---|
16 | * to the copyright license under the clause at DFARS 252.227-7013. This |
---|
17 | * notice must appear in all copies of this file and its derivatives. |
---|
18 | * |
---|
19 | * $Id$ |
---|
20 | */ |
---|
21 | |
---|
22 | #include "system.h" |
---|
23 | |
---|
24 | rtems_task Task_2( |
---|
25 | rtems_task_argument argument |
---|
26 | ) |
---|
27 | { |
---|
28 | rtems_status_code status; |
---|
29 | rtems_task_priority the_priority; |
---|
30 | rtems_task_priority previous_priority; |
---|
31 | |
---|
32 | while( FOREVER ) { |
---|
33 | |
---|
34 | status = rtems_task_get_note( RTEMS_SELF, RTEMS_NOTEPAD_8, &the_priority ); |
---|
35 | directive_failed( status, "rtems_task_get_note" ); |
---|
36 | printf( |
---|
37 | "TA2 - rtems_task_get_note - get RTEMS_NOTEPAD_8 - current priority: %02d\n", |
---|
38 | the_priority |
---|
39 | ); |
---|
40 | |
---|
41 | if ( --the_priority == 0 ) { |
---|
42 | puts( "TA2 - rtems_task_suspend - suspend TA1" ); |
---|
43 | status = rtems_task_suspend( Task_id[ 1 ] ); |
---|
44 | directive_failed( status, "rtems_task_suspend" ); |
---|
45 | |
---|
46 | puts( "TA2 - rtems_task_set_priority - set priority of TA1 ( blocked )" ); |
---|
47 | status = rtems_task_set_priority( Task_id[ 1 ], 5, &previous_priority ); |
---|
48 | directive_failed( status, "rtems_task_set_priority" ); |
---|
49 | |
---|
50 | status = rtems_task_delete( Task_id[ 1 ] ); /* TA1 is blocked */ |
---|
51 | directive_failed( status, "rtems_task_delete of TA1" ); |
---|
52 | |
---|
53 | status = rtems_task_delete( Task_id[ 3 ] ); /* TA3 is ready */ |
---|
54 | directive_failed( status, "rtems_task_delete of TA3" ); |
---|
55 | |
---|
56 | status = rtems_task_delete( RTEMS_SELF ); |
---|
57 | directive_failed( status, "rtems_task_delete of SELD" ); |
---|
58 | |
---|
59 | } else { |
---|
60 | |
---|
61 | printf( "TA2 - rtems_task_set_note - set TA1's RTEMS_NOTEPAD_8: %02d\n", |
---|
62 | the_priority |
---|
63 | ); |
---|
64 | status = rtems_task_set_note(Task_id[ 1 ], RTEMS_NOTEPAD_8, the_priority); |
---|
65 | directive_failed( status, "rtems_task_set_note" ); |
---|
66 | |
---|
67 | printf( "TA2 - rtems_task_set_priority - set TA1's priority: %02d\n", |
---|
68 | the_priority |
---|
69 | ); |
---|
70 | status = rtems_task_set_priority( |
---|
71 | Task_id[ 1 ], |
---|
72 | the_priority, |
---|
73 | &previous_priority |
---|
74 | ); |
---|
75 | directive_failed( status, "rtems_task_set_priority" ); |
---|
76 | } |
---|
77 | } |
---|
78 | } |
---|