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<h1>ksrc/skins/posix/internal.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Written by Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>.</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * This program is free software; you can redistribute it and/or</span>
<a name="l00005"></a>00005 <span class="comment"> * modify it under the terms of the GNU General Public License as</span>
<a name="l00006"></a>00006 <span class="comment"> * published by the Free Software Foundation; either version 2 of the</span>
<a name="l00007"></a>00007 <span class="comment"> * License, or (at your option) any later version.</span>
<a name="l00008"></a>00008 <span class="comment"> *</span>
<a name="l00009"></a>00009 <span class="comment"> * This program is distributed in the hope that it will be useful,</span>
<a name="l00010"></a>00010 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00011"></a>00011 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00012"></a>00012 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
<a name="l00015"></a>00015 <span class="comment"> * along with this program; if not, write to the Free Software</span>
<a name="l00016"></a>00016 <span class="comment"> * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.</span>
<a name="l00017"></a>00017 <span class="comment"> */</span>
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="preprocessor">#ifndef _POSIX_INTERNAL_H</span>
<a name="l00020"></a>00020 <span class="preprocessor"></span><span class="preprocessor">#define _POSIX_INTERNAL_H</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <nucleus/xenomai.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <nucleus/ppd.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <<a class="code" href="select_8h.html" title="file descriptors events multiplexing header.">nucleus/select.h</a>></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <posix/posix.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <posix/registry.h></span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="comment">/* debug support */</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <nucleus/assert.h></span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#ifndef CONFIG_XENO_OPT_DEBUG_POSIX</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#define CONFIG_XENO_OPT_DEBUG_POSIX 0</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span>
<a name="l00035"></a>00035 <span class="preprocessor">#define PSE51_MAGIC(n) (0x8686##n##n)</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_ANY_MAGIC PSE51_MAGIC(00)</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_THREAD_MAGIC PSE51_MAGIC(01)</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_THREAD_ATTR_MAGIC PSE51_MAGIC(02)</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_MUTEX_MAGIC PSE51_MAGIC(03)</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_MUTEX_ATTR_MAGIC (PSE51_MAGIC(04) & ((1 << 24) - 1))</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_COND_MAGIC PSE51_MAGIC(05)</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_COND_ATTR_MAGIC (PSE51_MAGIC(05) & ((1 << 24) - 1))</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_SEM_MAGIC PSE51_MAGIC(06)</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_KEY_MAGIC PSE51_MAGIC(07)</span>
<a name="l00045"></a>00045 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_ONCE_MAGIC PSE51_MAGIC(08)</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_MQ_MAGIC PSE51_MAGIC(09)</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_MQD_MAGIC PSE51_MAGIC(0A)</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_INTR_MAGIC PSE51_MAGIC(0B)</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_NAMED_SEM_MAGIC PSE51_MAGIC(0C)</span>
<a name="l00050"></a>00050 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_TIMER_MAGIC PSE51_MAGIC(0D)</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_SHM_MAGIC PSE51_MAGIC(0E)</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span>
<a name="l00053"></a>00053 <span class="preprocessor">#define PSE51_MIN_PRIORITY XNSCHED_LOW_PRIO</span>
<a name="l00054"></a>00054 <span class="preprocessor"></span><span class="preprocessor">#define PSE51_MAX_PRIORITY XNSCHED_HIGH_PRIO</span>
<a name="l00055"></a>00055 <span class="preprocessor"></span>
<a name="l00056"></a>00056 <span class="preprocessor">#define ONE_BILLION 1000000000</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span>
<a name="l00058"></a>00058 <span class="preprocessor">#define pse51_obj_active(h,m,t) \</span>
<a name="l00059"></a>00059 <span class="preprocessor"> ((h) && ((t *)(h))->magic == (m))</span>
<a name="l00060"></a>00060 <span class="preprocessor"></span>
<a name="l00061"></a>00061 <span class="preprocessor">#define pse51_obj_deleted(h,m,t) \</span>
<a name="l00062"></a>00062 <span class="preprocessor"> ((h) && ((t *)(h))->magic == ~(m))</span>
<a name="l00063"></a>00063 <span class="preprocessor"></span>
<a name="l00064"></a>00064 <span class="preprocessor">#define pse51_mark_deleted(t) ((t)->magic = ~(t)->magic)</span>
<a name="l00065"></a>00065 <span class="preprocessor"></span>
<a name="l00066"></a>00066 <span class="keyword">typedef</span> <span class="keyword">struct </span>{
<a name="l00067"></a>00067 xnqueue_t condq;
<a name="l00068"></a>00068 xnqueue_t intrq;
<a name="l00069"></a>00069 xnqueue_t mutexq;
<a name="l00070"></a>00070 xnqueue_t semq;
<a name="l00071"></a>00071 xnqueue_t threadq;
<a name="l00072"></a>00072 xnqueue_t timerq;
<a name="l00073"></a>00073 } pse51_kqueues_t;
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="preprocessor">#ifdef CONFIG_XENO_OPT_PERVASIVE</span>
<a name="l00076"></a>00076 <span class="preprocessor"></span><span class="keyword">typedef</span> <span class="keyword">struct </span>{
<a name="l00077"></a>00077 pse51_kqueues_t kqueues;
<a name="l00078"></a>00078 pse51_assocq_t uqds;
<a name="l00079"></a>00079 pse51_assocq_t usems;
<a name="l00080"></a>00080 pse51_assocq_t umaps;
<a name="l00081"></a>00081 pse51_assocq_t ufds;
<a name="l00082"></a>00082
<a name="l00083"></a>00083 xnshadow_ppd_t ppd;
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="preprocessor">#define ppd2queues(addr) \</span>
<a name="l00086"></a>00086 <span class="preprocessor"> ((pse51_queues_t *) ((char *) (addr) - offsetof(pse51_queues_t, ppd)))</span>
<a name="l00087"></a>00087 <span class="preprocessor"></span>
<a name="l00088"></a>00088 } pse51_queues_t;
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="keyword">extern</span> <span class="keywordtype">int</span> pse51_muxid;
<a name="l00091"></a>00091 <span class="preprocessor">#endif </span><span class="comment">/* CONFIG_XENO_OPT_PERVASIVE */</span>
<a name="l00092"></a>00092
<a name="l00093"></a>00093 <span class="keyword">extern</span> xntbase_t *pse51_tbase;
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keyword">extern</span> pse51_kqueues_t pse51_global_kqueues;
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="preprocessor">#ifdef CONFIG_XENO_OPT_PERVASIVE</span>
<a name="l00098"></a>00098 <span class="preprocessor"></span><span class="keyword">static</span> <span class="keyword">inline</span> pse51_queues_t *pse51_queues(<span class="keywordtype">void</span>)
<a name="l00099"></a>00099 {
<a name="l00100"></a>00100 xnshadow_ppd_t *ppd;
<a name="l00101"></a>00101 spl_t s;
<a name="l00102"></a>00102
<a name="l00103"></a>00103 xnlock_get_irqsave(&nklock, s);
<a name="l00104"></a>00104
<a name="l00105"></a>00105 ppd = <a class="code" href="group__shadow.html#g14c8b586498491f886d7b5335f92c3b1" title="Return the per-process data attached to the calling process.">xnshadow_ppd_get</a>(pse51_muxid);
<a name="l00106"></a>00106
<a name="l00107"></a>00107 xnlock_put_irqrestore(&nklock, s);
<a name="l00108"></a>00108
<a name="l00109"></a>00109 <span class="keywordflow">if</span> (!ppd)
<a name="l00110"></a>00110 <span class="keywordflow">return</span> NULL;
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="keywordflow">return</span> ppd2queues(ppd);
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114 <span class="preprocessor">#endif </span><span class="comment">/* CONFIG_XENO_OPT_PERVASIVE */</span>
<a name="l00115"></a>00115
<a name="l00116"></a>00116 <span class="keyword">static</span> <span class="keyword">inline</span> pse51_kqueues_t *pse51_kqueues(<span class="keywordtype">int</span> pshared)
<a name="l00117"></a>00117 {
<a name="l00118"></a>00118 <span class="preprocessor">#ifdef CONFIG_XENO_OPT_PERVASIVE</span>
<a name="l00119"></a>00119 <span class="preprocessor"></span> xnshadow_ppd_t *ppd;
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="keywordflow">if</span> (pshared || !(ppd = <a class="code" href="group__shadow.html#g14c8b586498491f886d7b5335f92c3b1" title="Return the per-process data attached to the calling process.">xnshadow_ppd_get</a>(pse51_muxid)))
<a name="l00122"></a>00122 <span class="keywordflow">return</span> &pse51_global_kqueues;
<a name="l00123"></a>00123
<a name="l00124"></a>00124 <span class="keywordflow">return</span> &ppd2queues(ppd)->kqueues;
<a name="l00125"></a>00125 <span class="preprocessor">#else </span><span class="comment">/* !CONFIG_XENO_OPT_PERVASIVE */</span>
<a name="l00126"></a>00126 <span class="keywordflow">return</span> &pse51_global_kqueues;
<a name="l00127"></a>00127 <span class="preprocessor">#endif </span><span class="comment">/* !CONFIG_XENO_OPT_PERVASIVE */</span>
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129
<a name="l00130"></a>00130 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> ticks2ts(<span class="keyword">struct</span> timespec *ts, xnticks_t ticks)
<a name="l00131"></a>00131 {
<a name="l00132"></a>00132 ts->tv_sec = xnarch_divrem_billion(xntbase_ticks2ns(pse51_tbase, ticks),
<a name="l00133"></a>00133 &ts->tv_nsec);
<a name="l00134"></a>00134 }
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="keyword">static</span> <span class="keyword">inline</span> xnticks_t ts2ticks_floor(<span class="keyword">const</span> <span class="keyword">struct</span> timespec *ts)
<a name="l00137"></a>00137 {
<a name="l00138"></a>00138 xntime_t nsecs = ts->tv_nsec;
<a name="l00139"></a>00139 <span class="keywordflow">if</span>(ts->tv_sec)
<a name="l00140"></a>00140 nsecs += (xntime_t) ts->tv_sec * ONE_BILLION;
<a name="l00141"></a>00141 <span class="keywordflow">return</span> xntbase_ns2ticks(pse51_tbase, nsecs);
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="keyword">static</span> <span class="keyword">inline</span> xnticks_t ts2ticks_ceil(<span class="keyword">const</span> <span class="keyword">struct</span> timespec *ts)
<a name="l00145"></a>00145 {
<a name="l00146"></a>00146 xntime_t nsecs = ts->tv_nsec;
<a name="l00147"></a>00147 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> rem;
<a name="l00148"></a>00148 xnticks_t ticks;
<a name="l00149"></a>00149 <span class="keywordflow">if</span>(ts->tv_sec)
<a name="l00150"></a>00150 nsecs += (xntime_t) ts->tv_sec * ONE_BILLION;
<a name="l00151"></a>00151 ticks = xnarch_ulldiv(nsecs, xntbase_get_tickval(pse51_tbase), &rem);
<a name="l00152"></a>00152 <span class="keywordflow">return</span> rem ? ticks+1 : ticks;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="keyword">static</span> <span class="keyword">inline</span> xnticks_t tv2ticks_ceil(<span class="keyword">const</span> <span class="keyword">struct</span> timeval *tv)
<a name="l00156"></a>00156 {
<a name="l00157"></a>00157 xntime_t nsecs = tv->tv_usec * 1000;
<a name="l00158"></a>00158 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> rem;
<a name="l00159"></a>00159 xnticks_t ticks;
<a name="l00160"></a>00160 <span class="keywordflow">if</span>(tv->tv_sec)
<a name="l00161"></a>00161 nsecs += (xntime_t) tv->tv_sec * ONE_BILLION;
<a name="l00162"></a>00162 ticks = xnarch_ulldiv(nsecs, xntbase_get_tickval(pse51_tbase), &rem);
<a name="l00163"></a>00163 <span class="keywordflow">return</span> rem ? ticks+1 : ticks;
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165
<a name="l00166"></a>00166 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> ticks2tv(<span class="keyword">struct</span> timeval *tv, xnticks_t ticks)
<a name="l00167"></a>00167 {
<a name="l00168"></a>00168 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nsecs;
<a name="l00169"></a>00169 tv->tv_sec = xnarch_divrem_billion(xntbase_ticks2ns(pse51_tbase, ticks),
<a name="l00170"></a>00170 &nsecs);
<a name="l00171"></a>00171 tv->tv_usec = nsecs / 1000;
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173
<a name="l00174"></a>00174 <span class="keyword">static</span> <span class="keyword">inline</span> xnticks_t clock_get_ticks(clockid_t clock_id)
<a name="l00175"></a>00175 {
<a name="l00176"></a>00176 <span class="keywordflow">if</span>(clock_id == CLOCK_REALTIME)
<a name="l00177"></a>00177 <span class="keywordflow">return</span> <a class="code" href="group__timebase.html#g5246b53b5b2d1b11d4fab4312fd16fda" title="Get the clock time for a given time base.">xntbase_get_time</a>(pse51_tbase);
<a name="l00178"></a>00178 <span class="keywordflow">else</span>
<a name="l00179"></a>00179 <span class="keywordflow">return</span> xntbase_get_jiffies(pse51_tbase);
<a name="l00180"></a>00180 }
<a name="l00181"></a>00181
<a name="l00182"></a>00182 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">int</span> clock_flag(<span class="keywordtype">int</span> flag, clockid_t clock_id)
<a name="l00183"></a>00183 {
<a name="l00184"></a>00184 <span class="keywordflow">switch</span>(flag & TIMER_ABSTIME) {
<a name="l00185"></a>00185 <span class="keywordflow">case</span> 0:
<a name="l00186"></a>00186 <span class="keywordflow">return</span> XN_RELATIVE;
<a name="l00187"></a>00187
<a name="l00188"></a>00188 <span class="keywordflow">case</span> TIMER_ABSTIME:
<a name="l00189"></a>00189 <span class="keywordflow">switch</span>(clock_id) {
<a name="l00190"></a>00190 <span class="keywordflow">case</span> CLOCK_MONOTONIC:
<a name="l00191"></a>00191 <span class="keywordflow">return</span> XN_ABSOLUTE;
<a name="l00192"></a>00192
<a name="l00193"></a>00193 <span class="keywordflow">case</span> CLOCK_REALTIME:
<a name="l00194"></a>00194 <span class="keywordflow">return</span> XN_REALTIME;
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196 }
<a name="l00197"></a>00197 <span class="keywordflow">return</span> -EINVAL;
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199
<a name="l00200"></a>00200 <span class="keywordtype">int</span> pse51_mq_select_bind(mqd_t fd, <span class="keyword">struct</span> xnselector *selector,
<a name="l00201"></a>00201 <span class="keywordtype">unsigned</span> type, <span class="keywordtype">unsigned</span> index);
<a name="l00202"></a>00202
<a name="l00203"></a>00203 <span class="preprocessor">#endif </span><span class="comment">/* !_POSIX_INTERNAL_H */</span>
</pre></div></div>
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