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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
<HTML
><HEAD
><TITLE
>rt_task_make_periodic</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.64
"></HEAD
><BODY
CLASS="REFENTRY"
><H1
><A
NAME="AEN1"
>rt_task_make_periodic</A
></H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN5"
></A
><H2
>Name</H2
>rt_task_make_periodic -- mark a realtime task for execution.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN8"
></A
><H2
>Synopsis</H2
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="SYNOPSIS"
> <I
CLASS="EMPHASIS"
>WARNING</I
> --
This is an RTLinux v1.x compatibility function.
For new programs, please see <TT
CLASS="FUNCTION"
>pthread_make_periodic_np(3)</TT
>.
#define MODULE
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/errno.h>
#include <linux/rtf.h>
#include <asm/rt_irq.h>
int <TT
CLASS="FUNCTION"
>rt_task_make_periodic</TT
>(RT_TASK *<TT
CLASS="PARAMETER"
><I
>task</I
></TT
>, RTIME <TT
CLASS="PARAMETER"
><I
>start_time</I
></TT
>, RTIME <TT
CLASS="PARAMETER"
><I
>period</I
></TT
>);</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN16"
></A
><H2
>WARNING</H2
><P
>This is an RTLinux v1.x compatibility function.
For new programs, please see <TT
CLASS="FUNCTION"
>pthread_make_periodic_np(3)</TT
>.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN20"
></A
><H2
>DESCRIPTION</H2
><P
><TT
CLASS="FUNCTION"
>rt_task_make_periodic</TT
> marks a task, previously created with a call to <TT
CLASS="FUNCTION"
>rt_task_init</TT
>, as ready for execution. The task will run at intervals specified by <TT
CLASS="PARAMETER"
><I
>period</I
></TT
>; i.e., it will be marked for execution every <TT
CLASS="PARAMETER"
><I
>period</I
></TT
> realtime clock ticks. The desired start time is specified by <TT
CLASS="PARAMETER"
><I
>start_time</I
></TT
>; the first execution of the task will occur <TT
CLASS="PARAMETER"
><I
>start_time</I
></TT
> clock ticks from the current time. If immediate execution is desired, the return value of <TT
CLASS="FUNCTION"
>rt_get_time</TT
> can be used for <TT
CLASS="PARAMETER"
><I
>start_time</I
></TT
>.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN31"
></A
><H2
>RETURN VALUE</H2
><P
>On success, 0 is returned. On failure, a negative value is returned as described below.</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN34"
></A
><H2
>ERRORS</H2
><P
></P
><DIV
CLASS="VARIABLELIST"
><DL
><DT
>-EINVAL</DT
><DD
><P
><TT
CLASS="PARAMETER"
><I
>task</I
></TT
> does not refer to a valid <TT
CLASS="PARAMETER"
><I
>RT_TASK</I
></TT
> structure.</P
></DD
></DL
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN43"
></A
><H2
>AUTHOR</H2
><P
>Jerry Epplin, modified by Michael Barabanov (<A
HREF="mailto:baraban@fsmlabs.com"
TARGET="_top"
>baraban@fsmlabs.com</A
>)</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN47"
></A
><H2
>SEE ALSO</H2
><A
HREF="rt_get_time.3.html"
TARGET="_top"
>rt_get_time(3)</A
>, <A
HREF="rt_task_delete.3.html"
TARGET="_top"
>rt_task_delete(3)</A
>, <A
HREF="rt_task_init.3.html"
TARGET="_top"
>rt_task_init(3)</A
>, <A
HREF="rt_task_suspend.3.html"
TARGET="_top"
>rt_task_suspend(3)</A
>, <A
HREF="rt_task_wait.3.html"
TARGET="_top"
>rt_task_wait(3)</A
>, <A
HREF="pthread_make_periodic_np.3.html"
TARGET="_top"
>pthread_make_periodic_np(3)</A
><P
>1997 Jerry Epplin.</P
><P
>Modifications for RTLinux 2.x and 3.x by Michael Barabanov. 2001 FSMLabs Inc.</P
><P
>All rights reserved.</P
></DIV
></BODY
></HTML
>
|
