1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* Classic API Signal to Task from ISR
*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#define TEST_INIT
#include "system.h"
volatile boolean case_hit;
rtems_id main_task;
rtems_id other_task;
rtems_timer_service_routine test_event_from_isr(
rtems_id timer,
void *arg
)
{
rtems_status_code status;
if ( _Event_Sync_state == THREAD_BLOCKING_OPERATION_NOTHING_HAPPENED ) {
/*
* This event send hits the critical section but sends to
* another task so doesn't impact this critical section.
*/
rtems_event_send( other_task, 0x02 );
/*
* This event send hits the main task but doesn't satisfy
* it's blocking condition so it will still block
*/
rtems_event_send( main_task, 0x02 );
case_hit = TRUE;
}
status = rtems_event_send( main_task, 0x01 );
}
rtems_task Init(
rtems_task_argument argument
)
{
rtems_status_code status;
rtems_id timer;
rtems_event_set out;
int i;
int max;
int iterations = 0;
puts( "\n\n*** TEST 39 ***" );
main_task = rtems_task_self();
/*
* Timer used in multiple ways
*/
status = rtems_timer_create( 1, &timer );
directive_failed( status, "rtems_timer_create" );
status = rtems_task_create(
0xa5a5a5a5,
1,
RTEMS_MINIMUM_STACK_SIZE,
RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES,
&other_task
);
directive_failed( status, "rtems_task_create" );
/*
* Test Event send successful from ISR
*/
case_hit = FALSE;
max = 1;
while (1) {
if ( case_hit )
break;
status = rtems_timer_fire_after( timer, 1, test_event_from_isr, NULL );
directive_failed( status, "timer_fire_after failed" );
for (i=0 ; i<max ; i++ )
if ( _Event_Sync_state == THREAD_BLOCKING_OPERATION_SATISFIED )
break;
status = rtems_event_receive( 0x01, RTEMS_DEFAULT_OPTIONS, 0, &out );
directive_failed( status, "rtems_event_receive" );
if ( case_hit == TRUE )
break;
max += 2;
}
printf(
"Event sent from ISR hitting synchronization point has %soccurred\n",
(( case_hit == TRUE ) ? "" : "NOT ")
);
/*
* Now try for a timeout case
*/
iterations = 0;
case_hit = FALSE;
max = 1;
puts(
"Run multiple times in attempt to hit event timeout synchronization point"
);
while (1) {
for (i=0 ; i<max ; i++ )
if ( _Event_Sync_state == THREAD_BLOCKING_OPERATION_SATISFIED )
break;
status = rtems_event_receive( 0x01, RTEMS_DEFAULT_OPTIONS, 1, &out );
fatal_directive_status( status, RTEMS_TIMEOUT, "event_receive timeout" );
if ( case_hit )
break;
if ( ++max > 1024 )
max = 0;
if ( ++iterations >= 0x1000 )
break;
}
puts( "*** END OF TEST 39 ***" );
rtems_test_exit( 0 );
}
|
