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
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
<title>Xenomai API: include/nucleus/sched-rt.h Source File</title>
<link href="doxygen.css" rel="stylesheet" type="text/css">
<link href="tabs.css" rel="stylesheet" type="text/css">
</head><body>
<!-- Generated by Doxygen 1.5.6 -->
<div class="navigation" id="top">
<div class="tabs">
<ul>
<li><a href="main.html"><span>Main Page</span></a></li>
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
<li><a href="examples.html"><span>Examples</span></a></li>
<li>
<form action="search.php" method="get">
<table cellspacing="0" cellpadding="0" border="0">
<tr>
<td><label> <u>S</u>earch for </label></td>
<td><input type="text" name="query" value="" size="20" accesskey="s"/></td>
</tr>
</table>
</form>
</li>
</ul>
</div>
<h1>include/nucleus/sched-rt.h</h1><a href="sched-rt_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001
<a name="l00023"></a>00023 <span class="preprocessor">#ifndef _XENO_NUCLEUS_SCHED_RT_H</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define _XENO_NUCLEUS_SCHED_RT_H</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span>
<a name="l00026"></a>00026 <span class="preprocessor">#ifndef _XENO_NUCLEUS_SCHED_H</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#error "please don't include nucleus/sched-rt.h directly"</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span>
<a name="l00030"></a>00030 <span class="comment">/* Priority scale for the RT scheduling class. */</span>
<a name="l00031"></a>00031 <span class="preprocessor">#define XNSCHED_RT_MIN_PRIO 0</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#define XNSCHED_RT_MAX_PRIO 257</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#define XNSCHED_RT_NR_PRIO (XNSCHED_RT_MAX_PRIO - XNSCHED_RT_MIN_PRIO + 1)</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span>
<a name="l00035"></a>00035 <span class="comment">/*</span>
<a name="l00036"></a>00036 <span class="comment"> * Builtin priorities shared by all core APIs. Those APIs, namely</span>
<a name="l00037"></a>00037 <span class="comment"> * POSIX, native and RTDM, only use a sub-range of the available</span>
<a name="l00038"></a>00038 <span class="comment"> * priority levels from the RT scheduling class, in order to exhibit a</span>
<a name="l00039"></a>00039 <span class="comment"> * 1:1 mapping with Linux's SCHED_FIFO ascending priority scale</span>
<a name="l00040"></a>00040 <span class="comment"> * [1..99]. Non-core APIs with inverted priority scales (e.g. VxWorks,</span>
<a name="l00041"></a>00041 <span class="comment"> * VRTX), normalize the priority values internally when calling the</span>
<a name="l00042"></a>00042 <span class="comment"> * priority-sensitive services of the nucleus, so that they fit into</span>
<a name="l00043"></a>00043 <span class="comment"> * the RT priority scale.</span>
<a name="l00044"></a>00044 <span class="comment"> */</span>
<a name="l00045"></a>00045 <span class="preprocessor">#define XNSCHED_LOW_PRIO 0</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="preprocessor">#define XNSCHED_HIGH_PRIO 99</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span><span class="preprocessor">#define XNSCHED_IRQ_PRIO XNSCHED_RT_MAX_PRIO </span><span class="comment">/* For IRQ servers. */</span>
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="preprocessor">#if defined(__KERNEL__) || defined(__XENO_SIM__)</span>
<a name="l00050"></a>00050 <span class="preprocessor"></span>
<a name="l00051"></a>00051 <span class="preprocessor">#if defined(CONFIG_XENO_OPT_SCALABLE_SCHED) && \</span>
<a name="l00052"></a>00052 <span class="preprocessor"> XNSCHED_RT_NR_PRIO > XNSCHED_MLQ_LEVELS</span>
<a name="l00053"></a>00053 <span class="preprocessor"></span><span class="preprocessor">#error "RT class cannot use multi-level queue (too many priority levels)"</span>
<a name="l00054"></a>00054 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00055"></a>00055 <span class="preprocessor"></span>
<a name="l00056"></a>00056 <span class="keyword">extern</span> <span class="keyword">struct </span>xnsched_class xnsched_class_rt;
<a name="l00057"></a>00057
<a name="l00058"></a>00058 <span class="keyword">extern</span> <span class="keyword">struct </span>xnsched_class xnsched_class_idle;
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="preprocessor">#define xnsched_class_default xnsched_class_rt</span>
<a name="l00061"></a>00061 <span class="preprocessor"></span>
<a name="l00062"></a>00062 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __xnsched_rt_requeue(<span class="keyword">struct</span> xnthread *thread)
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064 sched_insertpql(&thread->sched->rt.runnable,
<a name="l00065"></a>00065 &thread->rlink, thread->cprio);
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067
<a name="l00068"></a>00068 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __xnsched_rt_enqueue(<span class="keyword">struct</span> xnthread *thread)
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 sched_insertpqf(&thread->sched->rt.runnable,
<a name="l00071"></a>00071 &thread->rlink, thread->cprio);
<a name="l00072"></a>00072 }
<a name="l00073"></a>00073
<a name="l00074"></a>00074 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __xnsched_rt_dequeue(<span class="keyword">struct</span> xnthread *thread)
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 sched_removepq(&thread->sched->rt.runnable, &thread->rlink);
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078
<a name="l00079"></a>00079 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">struct </span>xnthread *__xnsched_rt_pick(<span class="keyword">struct</span> <a class="code" href="structxnsched.html" title="Scheduling information structure.">xnsched</a> *sched)
<a name="l00080"></a>00080 {
<a name="l00081"></a>00081 <span class="keyword">struct </span>xnpholder *h = sched_getpq(&sched-><a class="code" href="structxnsched.html#0890af51db917d0e6c02d1ff487daad5">rt</a>.runnable);
<a name="l00082"></a>00082 <span class="keywordflow">return</span> h ? link2thread(h, rlink) : NULL;
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __xnsched_rt_setparam(<span class="keyword">struct</span> xnthread *thread,
<a name="l00086"></a>00086 <span class="keyword">const</span> <span class="keyword">union</span> xnsched_policy_param *p)
<a name="l00087"></a>00087 {
<a name="l00088"></a>00088 thread->cprio = p->rt.prio;
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __xnsched_rt_getparam(<span class="keyword">struct</span> xnthread *thread,
<a name="l00092"></a>00092 <span class="keyword">union</span> xnsched_policy_param *p)
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094 p->rt.prio = thread->cprio;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __xnsched_rt_trackprio(<span class="keyword">struct</span> xnthread *thread,
<a name="l00098"></a>00098 <span class="keyword">const</span> <span class="keyword">union</span> xnsched_policy_param *p)
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 <span class="keywordflow">if</span> (p)
<a name="l00101"></a>00101 __xnsched_rt_setparam(thread, p);
<a name="l00102"></a>00102 <span class="keywordflow">else</span>
<a name="l00103"></a>00103 thread->cprio = thread->bprio;
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __xnsched_rt_forget(<span class="keyword">struct</span> xnthread *thread)
<a name="l00107"></a>00107 {
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span> xnsched_rt_init_tcb(<span class="keyword">struct</span> xnthread *thread)
<a name="l00111"></a>00111 {
<a name="l00112"></a>00112 <span class="keywordflow">return</span> 0;
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="keywordtype">void</span> xnsched_rt_tick(<span class="keyword">struct</span> xnthread *curr);
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="preprocessor">#ifdef CONFIG_XENO_OPT_PRIOCPL</span>
<a name="l00118"></a>00118 <span class="preprocessor"></span>
<a name="l00119"></a>00119 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">struct </span>xnthread *__xnsched_rt_push_rpi(<span class="keyword">struct</span> <a class="code" href="structxnsched.html" title="Scheduling information structure.">xnsched</a> *sched,
<a name="l00120"></a>00120 <span class="keyword">struct</span> xnthread *thread)
<a name="l00121"></a>00121 {
<a name="l00122"></a>00122 sched_insertpqf(&sched-><a class="code" href="structxnsched.html#0890af51db917d0e6c02d1ff487daad5">rt</a>.relaxed, &thread->xlink, thread->cprio);
<a name="l00123"></a>00123 <span class="keywordflow">return</span> link2thread(sched_getheadpq(&sched-><a class="code" href="structxnsched.html#0890af51db917d0e6c02d1ff487daad5">rt</a>.relaxed), xlink);
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __xnsched_rt_pop_rpi(<span class="keyword">struct</span> xnthread *thread)
<a name="l00127"></a>00127 {
<a name="l00128"></a>00128 <span class="keyword">struct </span><a class="code" href="structxnsched.html" title="Scheduling information structure.">xnsched</a> *sched = thread->rpi;
<a name="l00129"></a>00129 sched_removepq(&sched-><a class="code" href="structxnsched.html#0890af51db917d0e6c02d1ff487daad5">rt</a>.relaxed, &thread->xlink);
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keyword">struct </span>xnthread *__xnsched_rt_peek_rpi(<span class="keyword">struct</span> <a class="code" href="structxnsched.html" title="Scheduling information structure.">xnsched</a> *sched)
<a name="l00133"></a>00133 {
<a name="l00134"></a>00134 <span class="keyword">struct </span>xnpholder *h = sched_getheadpq(&sched-><a class="code" href="structxnsched.html#0890af51db917d0e6c02d1ff487daad5">rt</a>.relaxed);
<a name="l00135"></a>00135 <span class="keywordflow">return</span> h ? link2thread(h, xlink) : NULL;
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __xnsched_rt_suspend_rpi(<span class="keyword">struct</span> xnthread *thread)
<a name="l00139"></a>00139 {
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> __xnsched_rt_resume_rpi(<span class="keyword">struct</span> xnthread *thread)
<a name="l00143"></a>00143 {
<a name="l00144"></a>00144 }
<a name="l00145"></a>00145
<a name="l00146"></a>00146 <span class="preprocessor">#endif </span><span class="comment">/* CONFIG_XENO_OPT_PRIOCPL */</span>
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="preprocessor">#endif </span><span class="comment">/* __KERNEL__ || __XENO_SIM__ */</span>
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="preprocessor">#endif </span><span class="comment">/* !_XENO_NUCLEUS_SCHED_RT_H */</span>
</pre></div></div>
<hr size="1"><address style="text-align: right;"><small>Generated on Mon Aug 2 12:48:36 2010 for Xenomai API by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
</body>
</html>
|
