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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
* COPYRIGHT (c) 2011.
* 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.org/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define TEST_INIT
#include <tmacros.h>
#include <rtems/score/threadimpl.h>
const char rtems_test_name[] = "SPSIMPLESCHED 2";
/* forward declarations to avoid warnings */
rtems_task Init(rtems_task_argument argument);
rtems_task Test_task(rtems_task_argument argument);
void ObtainRelease(bool suspendIdle);
/*
* Keep the names and IDs in global variables so another task can use them.
*/
rtems_id Idle_id;
rtems_id Task_id[ 3 ]; /* array of task ids */
rtems_name Task_name[ 3 ]; /* array of task names */
rtems_name Semaphore_name[ 2 ];
rtems_id Semaphore_id[ 2 ];
rtems_task Test_task(
rtems_task_argument unused
)
{
rtems_id tid;
rtems_status_code status;
status = rtems_task_ident( RTEMS_SELF, RTEMS_SEARCH_ALL_NODES, &tid );
directive_failed( status, "wake after" );
for ( ; ; ) {
status = rtems_task_wake_after( RTEMS_YIELD_PROCESSOR );
directive_failed( status, "yield" );
}
}
void ObtainRelease( bool suspendIdle )
{
rtems_status_code status;
if (suspendIdle) {
puts( "INIT - Suspend Idle Task");
status = rtems_task_suspend( Idle_id );
directive_failed( status, "rtems_task_suspend idle" );
}
puts( "INIT - Obtain priority ceiling semaphore - priority increases" );
status= rtems_semaphore_obtain( Semaphore_id[1], RTEMS_DEFAULT_OPTIONS, 0 );
directive_failed( status, "rtems_semaphore_obtain" );
puts( "INIT - Obtain priority ceiling semaphore - priority decreases" );
status = rtems_semaphore_release( Semaphore_id[1] );
directive_failed( status, "rtems_semaphore_release" );
if (suspendIdle) {
puts( "INIT - Resume Idle Task");
status = rtems_task_resume( Idle_id );
directive_failed( status, "rtems_task_resume idle" );
}
}
rtems_task Init(
rtems_task_argument argument
)
{
rtems_status_code status;
TEST_BEGIN();
status = _Objects_Name_to_id_u32(
&_Thread_Internal_information.Objects,
rtems_build_name( 'I', 'D', 'L', 'E' ),
RTEMS_SEARCH_LOCAL_NODE,
&Idle_id
);
rtems_test_assert( status == RTEMS_SUCCESSFUL );
/*
* Create the semaphore. Then obtain and release the
* semaphore with no other tasks running.
*/
puts( "INIT - Create priority ceiling semaphore" );
Semaphore_name[ 1 ] = rtems_build_name( 'S', 'M', '1', ' ' );
status = rtems_semaphore_create(
Semaphore_name[ 1 ],
1,
RTEMS_BINARY_SEMAPHORE | RTEMS_PRIORITY_CEILING | RTEMS_PRIORITY,
2,
&Semaphore_id[ 1 ]
);
directive_failed( status, "rtems_semaphore_create of SM1" );
ObtainRelease( false );
/*
* Create test task and obtain release the semaphore with
* one other task running.
*/
puts( "INIT - create task 1" );
Task_name[ 1 ] = rtems_build_name( 'T', 'A', '1', ' ' );
status = rtems_task_create(
Task_name[ 1 ], 1, RTEMS_MINIMUM_STACK_SIZE * 2, RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES, &Task_id[ 1 ]
);
status = rtems_task_start( Task_id[ 1 ], Test_task, 1 );
ObtainRelease( false );
/*
* Create a a second test task and obtain release the semaphore
* with both tasks running.
*/
puts( "INIT - create task 2" );
Task_name[ 1 ] = rtems_build_name( 'T', 'A', '2', ' ' );
status = rtems_task_create(
Task_name[ 2 ], 1, RTEMS_MINIMUM_STACK_SIZE * 2, RTEMS_DEFAULT_MODES,
RTEMS_DEFAULT_ATTRIBUTES, &Task_id[ 2 ]
);
status = rtems_task_start( Task_id[ 2 ], Test_task, 1 );
ObtainRelease( false );
/*
* Obtain and release the semaphore with the idle task suspended.
*/
ObtainRelease( true );
/* End the Test */
TEST_END();
rtems_test_exit(0);
}
/* configuration information */
#define CONFIGURE_SCHEDULER_SIMPLE
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
#define CONFIGURE_MAXIMUM_TASKS 3
#define CONFIGURE_MAXIMUM_SEMAPHORES 2
#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_EXTRA_TASK_STACKS (3 * RTEMS_MINIMUM_STACK_SIZE)
#define CONFIGURE_INIT_TASK_PRIORITY 4
#define CONFIGURE_DISABLE_SMP_CONFIGURATION
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
/* end of include file */
|
