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<td><big><big>ChibiOS/RT</big></big><br><br>Architecture - Reference Manual - Guides</td>
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<h1>chevents.c</h1><a href="chevents_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment"> ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 Giovanni Di Sirio.</span>
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<a name="l00003"></a>00003 <span class="comment"></span>
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<a name="l00004"></a>00004 <span class="comment"> This file is part of ChibiOS/RT.</span>
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<a name="l00005"></a>00005 <span class="comment"></span>
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<a name="l00006"></a>00006 <span class="comment"> ChibiOS/RT is free software; you can redistribute it and/or modify</span>
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<a name="l00007"></a>00007 <span class="comment"> it under the terms of the GNU General Public License as published by</span>
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<a name="l00008"></a>00008 <span class="comment"> the Free Software Foundation; either version 3 of the License, or</span>
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<a name="l00009"></a>00009 <span class="comment"> (at your option) any later version.</span>
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<a name="l00010"></a>00010 <span class="comment"></span>
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<a name="l00011"></a>00011 <span class="comment"> ChibiOS/RT is distributed in the hope that it will be useful,</span>
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<a name="l00012"></a>00012 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
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<a name="l00013"></a>00013 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
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<a name="l00014"></a>00014 <span class="comment"> GNU General Public License for more details.</span>
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<a name="l00015"></a>00015 <span class="comment"></span>
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<a name="l00016"></a>00016 <span class="comment"> You should have received a copy of the GNU General Public License</span>
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<a name="l00017"></a>00017 <span class="comment"> along with this program. If not, see <http://www.gnu.org/licenses/>.</span>
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<a name="l00018"></a>00018 <span class="comment"></span>
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<a name="l00019"></a>00019 <span class="comment"> ---</span>
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<a name="l00020"></a>00020 <span class="comment"></span>
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<a name="l00021"></a>00021 <span class="comment"> A special exception to the GPL can be applied should you wish to distribute</span>
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<a name="l00022"></a>00022 <span class="comment"> a combined work that includes ChibiOS/RT, without being obliged to provide</span>
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<a name="l00023"></a>00023 <span class="comment"> the source code for any proprietary components. See the file exception.txt</span>
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<a name="l00024"></a>00024 <span class="comment"> for full details of how and when the exception can be applied.</span>
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<a name="l00025"></a>00025 <span class="comment">*/</span>
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<a name="l00026"></a>00026 <span class="comment"></span>
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<a name="l00027"></a>00027 <span class="comment">/**</span>
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<a name="l00028"></a>00028 <span class="comment"> * @file chevents.c</span>
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<a name="l00029"></a>00029 <span class="comment"> * @brief Events code.</span>
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<a name="l00030"></a>00030 <span class="comment"> *</span>
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<a name="l00031"></a>00031 <span class="comment"> * @addtogroup events</span>
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<a name="l00032"></a>00032 <span class="comment"> * @details Event Flags, Event Sources and Event Listeners.</span>
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<a name="l00033"></a>00033 <span class="comment"> * <h2>Operation mode</h2></span>
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<a name="l00034"></a>00034 <span class="comment"> * Each thread has a mask of pending event flags inside its @p Thread</span>
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<a name="l00035"></a>00035 <span class="comment"> * structure.</span>
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<a name="l00036"></a>00036 <span class="comment"> * Operations defined for event flags:</span>
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<a name="l00037"></a>00037 <span class="comment"> * - <b>Wait</b>, the invoking thread goes to sleep until a certain</span>
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<a name="l00038"></a>00038 <span class="comment"> * AND/OR combination of event flags becomes pending.</span>
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<a name="l00039"></a>00039 <span class="comment"> * - <b>Clear</b>, a mask of event flags is cleared from the pending</span>
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<a name="l00040"></a>00040 <span class="comment"> * events mask, the cleared event flags mask is returned (only the</span>
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<a name="l00041"></a>00041 <span class="comment"> * flags that were actually pending and then cleared).</span>
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<a name="l00042"></a>00042 <span class="comment"> * - <b>Signal</b>, an event mask is directly ORed to the mask of the</span>
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<a name="l00043"></a>00043 <span class="comment"> * signaled thread.</span>
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<a name="l00044"></a>00044 <span class="comment"> * - <b>Broadcast</b>, each thread registered on an Event Source is</span>
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<a name="l00045"></a>00045 <span class="comment"> * signaled with the event flags specified in its Event Listener.</span>
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<a name="l00046"></a>00046 <span class="comment"> * - <b>Dispatch</b>, an events mask is scanned and for each bit set</span>
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<a name="l00047"></a>00047 <span class="comment"> * to one an associated handler function is invoked. Bit masks are</span>
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<a name="l00048"></a>00048 <span class="comment"> * scanned from bit zero upward.</span>
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<a name="l00049"></a>00049 <span class="comment"> * .</span>
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<a name="l00050"></a>00050 <span class="comment"> * An Event Source is a special object that can be "broadcasted" by</span>
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<a name="l00051"></a>00051 <span class="comment"> * a thread or an interrupt service routine. Broadcasting an Event</span>
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<a name="l00052"></a>00052 <span class="comment"> * Source has the effect that all the threads registered on the</span>
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<a name="l00053"></a>00053 <span class="comment"> * Event Source will be signaled with an events mask.<br></span>
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<a name="l00054"></a>00054 <span class="comment"> * An unlimited number of Event Sources can exists in a system and</span>
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<a name="l00055"></a>00055 <span class="comment"> * each thread can be listening on an unlimited number of</span>
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<a name="l00056"></a>00056 <span class="comment"> * them.<br><br></span>
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<a name="l00057"></a>00057 <span class="comment"> * In order to use the Events APIs the @p CH_USE_EVENTS option must be</span>
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<a name="l00058"></a>00058 <span class="comment"> * enabled in @p chconf.h.</span>
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<a name="l00059"></a>00059 <span class="comment"> * @{</span>
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<a name="l00060"></a>00060 <span class="comment"> */</span>
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<a name="l00061"></a>00061
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<a name="l00062"></a>00062 <span class="preprocessor">#include "<a class="code" href="ch_8h.html" title="ChibiOS/RT main include file.">ch.h</a>"</span>
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<a name="l00063"></a>00063
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<a name="l00064"></a>00064 <span class="preprocessor">#if CH_USE_EVENTS</span>
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<a name="l00065"></a>00065 <span class="preprocessor"></span><span class="comment">/**</span>
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<a name="l00066"></a>00066 <span class="comment"> * @brief Registers an Event Listener on an Event Source.</span>
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<a name="l00067"></a>00067 <span class="comment"> * @note Multiple Event Listeners can specify the same bits to be pended.</span>
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<a name="l00068"></a>00068 <span class="comment"> *</span>
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<a name="l00069"></a>00069 <span class="comment"> * @param[in] esp pointer to the @p EventSource structure</span>
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<a name="l00070"></a>00070 <span class="comment"> * @param[in] elp pointer to the @p EventListener structure</span>
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<a name="l00071"></a>00071 <span class="comment"> * @param[in] mask the mask of event flags to be pended to the thread when</span>
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<a name="l00072"></a>00072 <span class="comment"> * the event source is broadcasted</span>
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<a name="l00073"></a>00073 <span class="comment"> */</span>
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<a name="l00074"></a><a class="code" href="group__events.html#ga4002600fe552128aaf96a6a1d3ada3ee">00074</a> <span class="keywordtype">void</span> <a class="code" href="group__events.html#ga4002600fe552128aaf96a6a1d3ada3ee" title="Registers an Event Listener on an Event Source.">chEvtRegisterMask</a>(<a class="code" href="struct_event_source.html" title="Event Source structure.">EventSource</a> *esp, <a class="code" href="struct_event_listener.html" title="Event Listener structure.">EventListener</a> *elp, <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask) {
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<a name="l00075"></a>00075
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<a name="l00076"></a>00076 <a class="code" href="group__debug.html#ga6bb6c0f97caab3a66332c8bfbf7a3844" title="Function parameter check.">chDbgCheck</a>((esp != NULL) && (elp != NULL), <span class="stringliteral">"chEvtRegisterMask"</span>);
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<a name="l00077"></a>00077
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<a name="l00078"></a>00078 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
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<a name="l00079"></a>00079 elp-><a class="code" href="struct_event_listener.html#aa4ac59cdfd75a6fe0dc9e5ab0ba3d77b" title="Next Event Listener registered on the Event Source.">el_next</a> = esp-><a class="code" href="struct_event_source.html#aa081acf7f4043f7f636c0ba3b52b5c71" title="First Event Listener registered on the Event Source.">es_next</a>;
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<a name="l00080"></a>00080 esp-><a class="code" href="struct_event_source.html#aa081acf7f4043f7f636c0ba3b52b5c71" title="First Event Listener registered on the Event Source.">es_next</a> = elp;
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<a name="l00081"></a>00081 elp-><a class="code" href="struct_event_listener.html#a965d367958c83624054f5c76c3551a8c" title="Thread interested in the Event Source.">el_listener</a> = <a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a>;
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<a name="l00082"></a>00082 elp-><a class="code" href="struct_event_listener.html#aae3b5064b1781d6aae314f0ae57e25c4" title="Event flags mask associated by the thread to the Event Source.">el_mask</a> = mask;
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<a name="l00083"></a>00083 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
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<a name="l00084"></a>00084 }
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<a name="l00085"></a>00085 <span class="comment"></span>
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<a name="l00086"></a>00086 <span class="comment">/**</span>
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<a name="l00087"></a>00087 <span class="comment"> * @brief Unregisters an Event Listener from its Event Source.</span>
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<a name="l00088"></a>00088 <span class="comment"> * @note If the event listener is not registered on the specified event</span>
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<a name="l00089"></a>00089 <span class="comment"> * source then the function does nothing.</span>
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<a name="l00090"></a>00090 <span class="comment"> * @note For optimal performance it is better to perform the unregister</span>
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<a name="l00091"></a>00091 <span class="comment"> * operations in inverse order of the register operations (elements</span>
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<a name="l00092"></a>00092 <span class="comment"> * are found on top of the list).</span>
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<a name="l00093"></a>00093 <span class="comment"> *</span>
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<a name="l00094"></a>00094 <span class="comment"> * @param[in] esp pointer to the @p EventSource structure</span>
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<a name="l00095"></a>00095 <span class="comment"> * @param[in] elp pointer to the @p EventListener structure</span>
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<a name="l00096"></a>00096 <span class="comment"> */</span>
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<a name="l00097"></a><a class="code" href="group__events.html#ga68d15e1c7e12e96edd40069a27981d38">00097</a> <span class="keywordtype">void</span> <a class="code" href="group__events.html#ga68d15e1c7e12e96edd40069a27981d38" title="Unregisters an Event Listener from its Event Source.">chEvtUnregister</a>(<a class="code" href="struct_event_source.html" title="Event Source structure.">EventSource</a> *esp, <a class="code" href="struct_event_listener.html" title="Event Listener structure.">EventListener</a> *elp) {
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<a name="l00098"></a>00098 <a class="code" href="struct_event_listener.html" title="Event Listener structure.">EventListener</a> *p;
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<a name="l00099"></a>00099
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<a name="l00100"></a>00100 <a class="code" href="group__debug.html#ga6bb6c0f97caab3a66332c8bfbf7a3844" title="Function parameter check.">chDbgCheck</a>((esp != NULL) && (elp != NULL), <span class="stringliteral">"chEvtUnregister"</span>);
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<a name="l00101"></a>00101
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<a name="l00102"></a>00102 p = (<a class="code" href="struct_event_listener.html" title="Event Listener structure.">EventListener</a> *)esp;
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<a name="l00103"></a>00103 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
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<a name="l00104"></a>00104 <span class="keywordflow">while</span> (p-><a class="code" href="struct_event_listener.html#aa4ac59cdfd75a6fe0dc9e5ab0ba3d77b" title="Next Event Listener registered on the Event Source.">el_next</a> != (<a class="code" href="struct_event_listener.html" title="Event Listener structure.">EventListener</a> *)esp) {
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<a name="l00105"></a>00105 <span class="keywordflow">if</span> (p-><a class="code" href="struct_event_listener.html#aa4ac59cdfd75a6fe0dc9e5ab0ba3d77b" title="Next Event Listener registered on the Event Source.">el_next</a> == elp) {
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<a name="l00106"></a>00106 p-><a class="code" href="struct_event_listener.html#aa4ac59cdfd75a6fe0dc9e5ab0ba3d77b" title="Next Event Listener registered on the Event Source.">el_next</a> = elp-><a class="code" href="struct_event_listener.html#aa4ac59cdfd75a6fe0dc9e5ab0ba3d77b" title="Next Event Listener registered on the Event Source.">el_next</a>;
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<a name="l00107"></a>00107 <span class="keywordflow">break</span>;
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<a name="l00108"></a>00108 }
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<a name="l00109"></a>00109 p = p-><a class="code" href="struct_event_listener.html#aa4ac59cdfd75a6fe0dc9e5ab0ba3d77b" title="Next Event Listener registered on the Event Source.">el_next</a>;
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<a name="l00110"></a>00110 }
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<a name="l00111"></a>00111 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
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<a name="l00112"></a>00112 }
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<a name="l00113"></a>00113 <span class="comment"></span>
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<a name="l00114"></a>00114 <span class="comment">/**</span>
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<a name="l00115"></a>00115 <span class="comment"> * @brief Clears the pending events specified in the mask.</span>
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<a name="l00116"></a>00116 <span class="comment"> *</span>
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<a name="l00117"></a>00117 <span class="comment"> * @param[in] mask the events to be cleared</span>
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<a name="l00118"></a>00118 <span class="comment"> * @return The pending events that were cleared.</span>
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<a name="l00119"></a>00119 <span class="comment"> */</span>
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<a name="l00120"></a><a class="code" href="group__events.html#ga76f41b9668c3f1adafc516a8f92b9cad">00120</a> <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> <a class="code" href="group__events.html#ga76f41b9668c3f1adafc516a8f92b9cad" title="Clears the pending events specified in the mask.">chEvtClear</a>(<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask) {
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<a name="l00121"></a>00121 <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> m;
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<a name="l00122"></a>00122
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<a name="l00123"></a>00123 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
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<a name="l00124"></a>00124
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<a name="l00125"></a>00125 m = <a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a>->p_epending & mask;
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<a name="l00126"></a>00126 <a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a>->p_epending &= ~mask;
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<a name="l00127"></a>00127
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<a name="l00128"></a>00128 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
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<a name="l00129"></a>00129 <span class="keywordflow">return</span> m;
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<a name="l00130"></a>00130 }
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<a name="l00131"></a>00131 <span class="comment"></span>
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<a name="l00132"></a>00132 <span class="comment">/**</span>
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|
|
<a name="l00133"></a>00133 <span class="comment"> * @brief Pends a set of event flags on the current thread, this is @b much</span>
|
||
|
|
<a name="l00134"></a>00134 <span class="comment"> * faster than using @p chEvtBroadcast() or @p chEvtSignal().</span>
|
||
|
|
<a name="l00135"></a>00135 <span class="comment"> *</span>
|
||
|
|
<a name="l00136"></a>00136 <span class="comment"> * @param[in] mask the events to be pended</span>
|
||
|
|
<a name="l00137"></a>00137 <span class="comment"> * @return The current pending events mask.</span>
|
||
|
|
<a name="l00138"></a>00138 <span class="comment"> */</span>
|
||
|
|
<a name="l00139"></a><a class="code" href="group__events.html#ga94f14b6063f42b9be79a7dabde18232d">00139</a> <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> <a class="code" href="group__events.html#ga94f14b6063f42b9be79a7dabde18232d" title="Pends a set of event flags on the current thread, this is much faster than using...">chEvtPend</a>(<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask) {
|
||
|
|
<a name="l00140"></a>00140
|
||
|
|
<a name="l00141"></a>00141 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
|
||
|
|
<a name="l00142"></a>00142
|
||
|
|
<a name="l00143"></a>00143 mask = (<a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a>->p_epending |= mask);
|
||
|
|
<a name="l00144"></a>00144
|
||
|
|
<a name="l00145"></a>00145 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
|
||
|
|
<a name="l00146"></a>00146 <span class="keywordflow">return</span> mask;
|
||
|
|
<a name="l00147"></a>00147 }
|
||
|
|
<a name="l00148"></a>00148 <span class="comment"></span>
|
||
|
|
<a name="l00149"></a>00149 <span class="comment">/**</span>
|
||
|
|
<a name="l00150"></a>00150 <span class="comment"> * @brief Pends a set of event flags on the specified @p Thread.</span>
|
||
|
|
<a name="l00151"></a>00151 <span class="comment"> *</span>
|
||
|
|
<a name="l00152"></a>00152 <span class="comment"> * @param[in] tp the thread to be signaled</span>
|
||
|
|
<a name="l00153"></a>00153 <span class="comment"> * @param[in] mask the event flags set to be pended</span>
|
||
|
|
<a name="l00154"></a>00154 <span class="comment"> */</span>
|
||
|
|
<a name="l00155"></a><a class="code" href="group__events.html#ga75a812ae99ce83a3689f51d797a038de">00155</a> <span class="keywordtype">void</span> <a class="code" href="group__events.html#ga75a812ae99ce83a3689f51d797a038de" title="Pends a set of event flags on the specified Thread.">chEvtSignal</a>(<a class="code" href="struct_thread.html" title="Structure representing a thread.">Thread</a> *tp, <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask) {
|
||
|
|
<a name="l00156"></a>00156
|
||
|
|
<a name="l00157"></a>00157 <a class="code" href="group__debug.html#ga6bb6c0f97caab3a66332c8bfbf7a3844" title="Function parameter check.">chDbgCheck</a>(tp != NULL, <span class="stringliteral">"chEvtSignal"</span>);
|
||
|
|
<a name="l00158"></a>00158
|
||
|
|
<a name="l00159"></a>00159 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
|
||
|
|
<a name="l00160"></a>00160 <a class="code" href="group__events.html#ga6c219038c3e618e2142c6e1601997907" title="Pends a set of event flags on the specified Thread.">chEvtSignalI</a>(tp, mask);
|
||
|
|
<a name="l00161"></a>00161 <a class="code" href="group__scheduler.html#ga4e38b4bee3d2330f6a0f1cdb7660af20" title="Performs a reschedule if a higher priority thread is runnable.">chSchRescheduleS</a>();
|
||
|
|
<a name="l00162"></a>00162 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
|
||
|
|
<a name="l00163"></a>00163 }
|
||
|
|
<a name="l00164"></a>00164 <span class="comment"></span>
|
||
|
|
<a name="l00165"></a>00165 <span class="comment">/**</span>
|
||
|
|
<a name="l00166"></a>00166 <span class="comment"> * @brief Pends a set of event flags on the specified @p Thread.</span>
|
||
|
|
<a name="l00167"></a>00167 <span class="comment"> *</span>
|
||
|
|
<a name="l00168"></a>00168 <span class="comment"> * @param[in] tp the thread to be signaled</span>
|
||
|
|
<a name="l00169"></a>00169 <span class="comment"> * @param[in] mask the event flags set to be pended</span>
|
||
|
|
<a name="l00170"></a>00170 <span class="comment"> */</span>
|
||
|
|
<a name="l00171"></a><a class="code" href="group__events.html#ga6c219038c3e618e2142c6e1601997907">00171</a> <span class="keywordtype">void</span> <a class="code" href="group__events.html#ga6c219038c3e618e2142c6e1601997907" title="Pends a set of event flags on the specified Thread.">chEvtSignalI</a>(<a class="code" href="struct_thread.html" title="Structure representing a thread.">Thread</a> *tp, <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask) {
|
||
|
|
<a name="l00172"></a>00172
|
||
|
|
<a name="l00173"></a>00173 <a class="code" href="group__debug.html#ga6bb6c0f97caab3a66332c8bfbf7a3844" title="Function parameter check.">chDbgCheck</a>(tp != NULL, <span class="stringliteral">"chEvtSignalI"</span>);
|
||
|
|
<a name="l00174"></a>00174
|
||
|
|
<a name="l00175"></a>00175 tp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> |= mask;
|
||
|
|
<a name="l00176"></a>00176 <span class="comment">/* Test on the AND/OR conditions wait states.*/</span>
|
||
|
|
<a name="l00177"></a>00177 <span class="keywordflow">if</span> (((tp-><a class="code" href="struct_thread.html#a3c3e9d6abccb62c3a5fab6ef043a391f" title="Current thread state.">p_state</a> == <a class="code" href="group__threads.html#gacd5f28475be26c300aa3444b9bad8feb" title="Thread state: Waiting in chEvtWaitXXX().">THD_STATE_WTOREVT</a>) &&
|
||
|
|
<a name="l00178"></a>00178 ((tp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & tp-><a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#adb02f57eaf969c9e55f19a250e364f5a" title="Enabled events mask.">ewmask</a>) != 0)) ||
|
||
|
|
<a name="l00179"></a>00179 ((tp-><a class="code" href="struct_thread.html#a3c3e9d6abccb62c3a5fab6ef043a391f" title="Current thread state.">p_state</a> == <a class="code" href="group__threads.html#ga1227eb701b7ecaa8e8cd03edeeb79a92" title="Thread state: Waiting in chEvtWaitAllTimeout().">THD_STATE_WTANDEVT</a>) &&
|
||
|
|
<a name="l00180"></a>00180 ((tp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & tp-><a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#adb02f57eaf969c9e55f19a250e364f5a" title="Enabled events mask.">ewmask</a>) == tp-><a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#adb02f57eaf969c9e55f19a250e364f5a" title="Enabled events mask.">ewmask</a>)))
|
||
|
|
<a name="l00181"></a>00181 <a class="code" href="group__scheduler.html#ga535d58cfb3436c8d4e4586c31c062298" title="Inserts a thread in the Ready List.">chSchReadyI</a>(tp)-><a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#ad5792c30fbd60df0de223b0f398fc6d7" title="Thread wakeup code.">rdymsg</a> = <a class="code" href="group__scheduler.html#gae1c86078318e11c2fa57ee3c2ec69f61" title="Default thread wakeup low level message.">RDY_OK</a>;
|
||
|
|
<a name="l00182"></a>00182 }
|
||
|
|
<a name="l00183"></a>00183 <span class="comment"></span>
|
||
|
|
<a name="l00184"></a>00184 <span class="comment">/**</span>
|
||
|
|
<a name="l00185"></a>00185 <span class="comment"> * @brief Signals all the Event Listeners registered on the specified Event</span>
|
||
|
|
<a name="l00186"></a>00186 <span class="comment"> * Source.</span>
|
||
|
|
<a name="l00187"></a>00187 <span class="comment"> *</span>
|
||
|
|
<a name="l00188"></a>00188 <span class="comment"> * @param[in] esp pointer to the @p EventSource structure</span>
|
||
|
|
<a name="l00189"></a>00189 <span class="comment"> */</span>
|
||
|
|
<a name="l00190"></a><a class="code" href="group__events.html#ga44015af4dd20f74b0f73824ff1c1b2f4">00190</a> <span class="keywordtype">void</span> <a class="code" href="group__events.html#ga44015af4dd20f74b0f73824ff1c1b2f4" title="Signals all the Event Listeners registered on the specified Event Source.">chEvtBroadcast</a>(<a class="code" href="struct_event_source.html" title="Event Source structure.">EventSource</a> *esp) {
|
||
|
|
<a name="l00191"></a>00191
|
||
|
|
<a name="l00192"></a>00192 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
|
||
|
|
<a name="l00193"></a>00193 <a class="code" href="group__events.html#gaa24d9bed5b676b577200c4a8ebe3b8a3" title="Signals all the Event Listeners registered on the specified Event Source.">chEvtBroadcastI</a>(esp);
|
||
|
|
<a name="l00194"></a>00194 <a class="code" href="group__scheduler.html#ga4e38b4bee3d2330f6a0f1cdb7660af20" title="Performs a reschedule if a higher priority thread is runnable.">chSchRescheduleS</a>();
|
||
|
|
<a name="l00195"></a>00195 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
|
||
|
|
<a name="l00196"></a>00196 }
|
||
|
|
<a name="l00197"></a>00197 <span class="comment"></span>
|
||
|
|
<a name="l00198"></a>00198 <span class="comment">/**</span>
|
||
|
|
<a name="l00199"></a>00199 <span class="comment"> * @brief Signals all the Event Listeners registered on the specified Event</span>
|
||
|
|
<a name="l00200"></a>00200 <span class="comment"> * Source.</span>
|
||
|
|
<a name="l00201"></a>00201 <span class="comment"> *</span>
|
||
|
|
<a name="l00202"></a>00202 <span class="comment"> * @param[in] esp pointer to the @p EventSource structure</span>
|
||
|
|
<a name="l00203"></a>00203 <span class="comment"> */</span>
|
||
|
|
<a name="l00204"></a><a class="code" href="group__events.html#gaa24d9bed5b676b577200c4a8ebe3b8a3">00204</a> <span class="keywordtype">void</span> <a class="code" href="group__events.html#gaa24d9bed5b676b577200c4a8ebe3b8a3" title="Signals all the Event Listeners registered on the specified Event Source.">chEvtBroadcastI</a>(<a class="code" href="struct_event_source.html" title="Event Source structure.">EventSource</a> *esp) {
|
||
|
|
<a name="l00205"></a>00205 <a class="code" href="struct_event_listener.html" title="Event Listener structure.">EventListener</a> *elp;
|
||
|
|
<a name="l00206"></a>00206
|
||
|
|
<a name="l00207"></a>00207 <a class="code" href="group__debug.html#ga6bb6c0f97caab3a66332c8bfbf7a3844" title="Function parameter check.">chDbgCheck</a>(esp != NULL, <span class="stringliteral">"chEvtBroadcastI"</span>);
|
||
|
|
<a name="l00208"></a>00208
|
||
|
|
<a name="l00209"></a>00209 elp = esp-><a class="code" href="struct_event_source.html#aa081acf7f4043f7f636c0ba3b52b5c71" title="First Event Listener registered on the Event Source.">es_next</a>;
|
||
|
|
<a name="l00210"></a>00210 <span class="keywordflow">while</span> (elp != (<a class="code" href="struct_event_listener.html" title="Event Listener structure.">EventListener</a> *)esp) {
|
||
|
|
<a name="l00211"></a>00211 <a class="code" href="group__events.html#ga6c219038c3e618e2142c6e1601997907" title="Pends a set of event flags on the specified Thread.">chEvtSignalI</a>(elp-><a class="code" href="struct_event_listener.html#a965d367958c83624054f5c76c3551a8c" title="Thread interested in the Event Source.">el_listener</a>, elp-><a class="code" href="struct_event_listener.html#aae3b5064b1781d6aae314f0ae57e25c4" title="Event flags mask associated by the thread to the Event Source.">el_mask</a>);
|
||
|
|
<a name="l00212"></a>00212 elp = elp-><a class="code" href="struct_event_listener.html#aa4ac59cdfd75a6fe0dc9e5ab0ba3d77b" title="Next Event Listener registered on the Event Source.">el_next</a>;
|
||
|
|
<a name="l00213"></a>00213 }
|
||
|
|
<a name="l00214"></a>00214 }
|
||
|
|
<a name="l00215"></a>00215 <span class="comment"></span>
|
||
|
|
<a name="l00216"></a>00216 <span class="comment">/**</span>
|
||
|
|
<a name="l00217"></a>00217 <span class="comment"> * @brief Invokes the event handlers associated to an event flags mask.</span>
|
||
|
|
<a name="l00218"></a>00218 <span class="comment"> *</span>
|
||
|
|
<a name="l00219"></a>00219 <span class="comment"> * @param[in] mask mask of the events to be dispatched</span>
|
||
|
|
<a name="l00220"></a>00220 <span class="comment"> * @param[in] handlers an array of @p evhandler_t. The array must have size</span>
|
||
|
|
<a name="l00221"></a>00221 <span class="comment"> * equal to the number of bits in eventmask_t.</span>
|
||
|
|
<a name="l00222"></a>00222 <span class="comment"> */</span>
|
||
|
|
<a name="l00223"></a><a class="code" href="group__events.html#gaba2061f315848a8a722efcae258edc8c">00223</a> <span class="keywordtype">void</span> <a class="code" href="group__events.html#gaba2061f315848a8a722efcae258edc8c" title="Invokes the event handlers associated to an event flags mask.">chEvtDispatch</a>(<span class="keyword">const</span> <a class="code" href="group__events.html#ga1a153010620569dd0cac24da8952269f" title="Event Handler callback function.">evhandler_t</a> *handlers, <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask) {
|
||
|
|
<a name="l00224"></a>00224 <a class="code" href="group__types.html#gada5ed33935b8347e213aeb76582642e7" title="Event Id, use fastest signed.">eventid_t</a> eid;
|
||
|
|
<a name="l00225"></a>00225
|
||
|
|
<a name="l00226"></a>00226 <a class="code" href="group__debug.html#ga6bb6c0f97caab3a66332c8bfbf7a3844" title="Function parameter check.">chDbgCheck</a>(handlers != NULL, <span class="stringliteral">"chEvtDispatch"</span>);
|
||
|
|
<a name="l00227"></a>00227
|
||
|
|
<a name="l00228"></a>00228 eid = 0;
|
||
|
|
<a name="l00229"></a>00229 <span class="keywordflow">while</span> (mask) {
|
||
|
|
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (mask & <a class="code" href="group__events.html#gaad4eb14b222d2668a8ab6e7f52192f3f">EVENT_MASK</a>(eid)) {
|
||
|
|
<a name="l00231"></a>00231 <a class="code" href="group__debug.html#ga43d50c69eb730d0f024eb832d61f30c9" title="Condition assertion.">chDbgAssert</a>(handlers[eid] != NULL,
|
||
|
|
<a name="l00232"></a>00232 <span class="stringliteral">"chEvtDispatch(), #1"</span>,
|
||
|
|
<a name="l00233"></a>00233 <span class="stringliteral">"null handler"</span>);
|
||
|
|
<a name="l00234"></a>00234 mask &= ~<a class="code" href="group__events.html#gaad4eb14b222d2668a8ab6e7f52192f3f">EVENT_MASK</a>(eid);
|
||
|
|
<a name="l00235"></a>00235 handlers[eid](eid);
|
||
|
|
<a name="l00236"></a>00236 }
|
||
|
|
<a name="l00237"></a>00237 eid++;
|
||
|
|
<a name="l00238"></a>00238 }
|
||
|
|
<a name="l00239"></a>00239 }
|
||
|
|
<a name="l00240"></a>00240
|
||
|
|
<a name="l00241"></a>00241 <span class="preprocessor">#if CH_OPTIMIZE_SPEED || !CH_USE_EVENTS_TIMEOUT || defined(__DOXYGEN__)</span>
|
||
|
|
<a name="l00242"></a>00242 <span class="preprocessor"></span><span class="comment">/**</span>
|
||
|
|
<a name="l00243"></a>00243 <span class="comment"> * @brief Waits for exactly one of the specified events.</span>
|
||
|
|
<a name="l00244"></a>00244 <span class="comment"> * @details The function waits for one event among those specified in</span>
|
||
|
|
<a name="l00245"></a>00245 <span class="comment"> * @p mask to become pending then the event is cleared and returned.</span>
|
||
|
|
<a name="l00246"></a>00246 <span class="comment"> * @note One and only one event is served in the function, the one with the</span>
|
||
|
|
<a name="l00247"></a>00247 <span class="comment"> * lowest event id. The function is meant to be invoked into a loop in</span>
|
||
|
|
<a name="l00248"></a>00248 <span class="comment"> * order to serve all the pending events.<br></span>
|
||
|
|
<a name="l00249"></a>00249 <span class="comment"> * This means that Event Listeners with a lower event identifier have</span>
|
||
|
|
<a name="l00250"></a>00250 <span class="comment"> * an higher priority.</span>
|
||
|
|
<a name="l00251"></a>00251 <span class="comment"> *</span>
|
||
|
|
<a name="l00252"></a>00252 <span class="comment"> * @param[in] mask mask of the events that the function should wait for,</span>
|
||
|
|
<a name="l00253"></a>00253 <span class="comment"> * @p ALL_EVENTS enables all the events</span>
|
||
|
|
<a name="l00254"></a>00254 <span class="comment"> * @return The mask of the lowest id served and cleared event.</span>
|
||
|
|
<a name="l00255"></a>00255 <span class="comment"> */</span>
|
||
|
|
<a name="l00256"></a><a class="code" href="group__events.html#ga77651e22578713ebe355c1213286c2e9">00256</a> <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> <a class="code" href="group__events.html#ga77651e22578713ebe355c1213286c2e9" title="Waits for exactly one of the specified events.">chEvtWaitOne</a>(<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask) {
|
||
|
|
<a name="l00257"></a>00257 <a class="code" href="struct_thread.html" title="Structure representing a thread.">Thread</a> *ctp = <a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a>;
|
||
|
|
<a name="l00258"></a>00258 <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> m;
|
||
|
|
<a name="l00259"></a>00259
|
||
|
|
<a name="l00260"></a>00260 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
|
||
|
|
<a name="l00261"></a>00261
|
||
|
|
<a name="l00262"></a>00262 <span class="keywordflow">if</span> ((m = (ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & mask)) == 0) {
|
||
|
|
<a name="l00263"></a>00263 ctp-><a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#adb02f57eaf969c9e55f19a250e364f5a" title="Enabled events mask.">ewmask</a> = mask;
|
||
|
|
<a name="l00264"></a>00264 <a class="code" href="group__scheduler.html#ga97c1c514b755a1e71caf2f19c1ccf986" title="Puts the current thread to sleep into the specified state.">chSchGoSleepS</a>(<a class="code" href="group__threads.html#gacd5f28475be26c300aa3444b9bad8feb" title="Thread state: Waiting in chEvtWaitXXX().">THD_STATE_WTOREVT</a>);
|
||
|
|
<a name="l00265"></a>00265 m = ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & mask;
|
||
|
|
<a name="l00266"></a>00266 }
|
||
|
|
<a name="l00267"></a>00267 m &= -m;
|
||
|
|
<a name="l00268"></a>00268 ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> &= ~m;
|
||
|
|
<a name="l00269"></a>00269
|
||
|
|
<a name="l00270"></a>00270 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
|
||
|
|
<a name="l00271"></a>00271 <span class="keywordflow">return</span> m;
|
||
|
|
<a name="l00272"></a>00272 }
|
||
|
|
<a name="l00273"></a>00273 <span class="comment"></span>
|
||
|
|
<a name="l00274"></a>00274 <span class="comment">/**</span>
|
||
|
|
<a name="l00275"></a>00275 <span class="comment"> * @brief Waits for any of the specified events.</span>
|
||
|
|
<a name="l00276"></a>00276 <span class="comment"> * @details The function waits for any event among those specified in</span>
|
||
|
|
<a name="l00277"></a>00277 <span class="comment"> * @p mask to become pending then the events are cleared and returned.</span>
|
||
|
|
<a name="l00278"></a>00278 <span class="comment"> *</span>
|
||
|
|
<a name="l00279"></a>00279 <span class="comment"> * @param[in] mask mask of the events that the function should wait for,</span>
|
||
|
|
<a name="l00280"></a>00280 <span class="comment"> * @p ALL_EVENTS enables all the events</span>
|
||
|
|
<a name="l00281"></a>00281 <span class="comment"> * @return The mask of the served and cleared events.</span>
|
||
|
|
<a name="l00282"></a>00282 <span class="comment"> */</span>
|
||
|
|
<a name="l00283"></a><a class="code" href="group__events.html#gabd731d3ed2f037b2409e370676575f8d">00283</a> <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> <a class="code" href="group__events.html#gabd731d3ed2f037b2409e370676575f8d" title="Waits for any of the specified events.">chEvtWaitAny</a>(<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask) {
|
||
|
|
<a name="l00284"></a>00284 <a class="code" href="struct_thread.html" title="Structure representing a thread.">Thread</a> *ctp = <a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a>;
|
||
|
|
<a name="l00285"></a>00285 <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> m;
|
||
|
|
<a name="l00286"></a>00286
|
||
|
|
<a name="l00287"></a>00287 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
|
||
|
|
<a name="l00288"></a>00288
|
||
|
|
<a name="l00289"></a>00289 <span class="keywordflow">if</span> ((m = (ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & mask)) == 0) {
|
||
|
|
<a name="l00290"></a>00290 ctp-><a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#adb02f57eaf969c9e55f19a250e364f5a" title="Enabled events mask.">ewmask</a> = mask;
|
||
|
|
<a name="l00291"></a>00291 <a class="code" href="group__scheduler.html#ga97c1c514b755a1e71caf2f19c1ccf986" title="Puts the current thread to sleep into the specified state.">chSchGoSleepS</a>(<a class="code" href="group__threads.html#gacd5f28475be26c300aa3444b9bad8feb" title="Thread state: Waiting in chEvtWaitXXX().">THD_STATE_WTOREVT</a>);
|
||
|
|
<a name="l00292"></a>00292 m = ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & mask;
|
||
|
|
<a name="l00293"></a>00293 }
|
||
|
|
<a name="l00294"></a>00294 ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> &= ~m;
|
||
|
|
<a name="l00295"></a>00295
|
||
|
|
<a name="l00296"></a>00296 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
|
||
|
|
<a name="l00297"></a>00297 <span class="keywordflow">return</span> m;
|
||
|
|
<a name="l00298"></a>00298 }
|
||
|
|
<a name="l00299"></a>00299 <span class="comment"></span>
|
||
|
|
<a name="l00300"></a>00300 <span class="comment">/**</span>
|
||
|
|
<a name="l00301"></a>00301 <span class="comment"> * @brief Waits for all the specified events.</span>
|
||
|
|
<a name="l00302"></a>00302 <span class="comment"> * @details The function waits for all the events specified in @p mask to</span>
|
||
|
|
<a name="l00303"></a>00303 <span class="comment"> * become pending then the events are cleared and returned.</span>
|
||
|
|
<a name="l00304"></a>00304 <span class="comment"> *</span>
|
||
|
|
<a name="l00305"></a>00305 <span class="comment"> * @param[in] mask mask of the event ids that the function should wait for</span>
|
||
|
|
<a name="l00306"></a>00306 <span class="comment"> * @return The mask of the served and cleared events.</span>
|
||
|
|
<a name="l00307"></a>00307 <span class="comment"> */</span>
|
||
|
|
<a name="l00308"></a><a class="code" href="group__events.html#ga8c5c6bf310a08cdc836d23f98a87dbf5">00308</a> <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> <a class="code" href="group__events.html#ga8c5c6bf310a08cdc836d23f98a87dbf5" title="Waits for all the specified events.">chEvtWaitAll</a>(<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask) {
|
||
|
|
<a name="l00309"></a>00309 <a class="code" href="struct_thread.html" title="Structure representing a thread.">Thread</a> *ctp = <a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a>;
|
||
|
|
<a name="l00310"></a>00310
|
||
|
|
<a name="l00311"></a>00311 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
|
||
|
|
<a name="l00312"></a>00312
|
||
|
|
<a name="l00313"></a>00313 <span class="keywordflow">if</span> ((ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & mask) != mask) {
|
||
|
|
<a name="l00314"></a>00314 ctp-><a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#adb02f57eaf969c9e55f19a250e364f5a" title="Enabled events mask.">ewmask</a> = mask;
|
||
|
|
<a name="l00315"></a>00315 <a class="code" href="group__scheduler.html#ga97c1c514b755a1e71caf2f19c1ccf986" title="Puts the current thread to sleep into the specified state.">chSchGoSleepS</a>(<a class="code" href="group__threads.html#ga1227eb701b7ecaa8e8cd03edeeb79a92" title="Thread state: Waiting in chEvtWaitAllTimeout().">THD_STATE_WTANDEVT</a>);
|
||
|
|
<a name="l00316"></a>00316 }
|
||
|
|
<a name="l00317"></a>00317 ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> &= ~mask;
|
||
|
|
<a name="l00318"></a>00318
|
||
|
|
<a name="l00319"></a>00319 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
|
||
|
|
<a name="l00320"></a>00320 <span class="keywordflow">return</span> mask;
|
||
|
|
<a name="l00321"></a>00321 }
|
||
|
|
<a name="l00322"></a>00322 <span class="preprocessor">#endif </span><span class="comment">/* CH_OPTIMIZE_SPEED || !CH_USE_EVENTS_TIMEOUT */</span>
|
||
|
|
<a name="l00323"></a>00323
|
||
|
|
<a name="l00324"></a>00324 <span class="preprocessor">#if CH_USE_EVENTS_TIMEOUT</span>
|
||
|
|
<a name="l00325"></a>00325 <span class="preprocessor"></span><span class="comment">/**</span>
|
||
|
|
<a name="l00326"></a>00326 <span class="comment"> * @brief Waits for exactly one of the specified events.</span>
|
||
|
|
<a name="l00327"></a>00327 <span class="comment"> * @details The function waits for one event among those specified in</span>
|
||
|
|
<a name="l00328"></a>00328 <span class="comment"> * @p mask to become pending then the event is cleared and returned.</span>
|
||
|
|
<a name="l00329"></a>00329 <span class="comment"> * @note One and only one event is served in the function, the one with the</span>
|
||
|
|
<a name="l00330"></a>00330 <span class="comment"> * lowest event id. The function is meant to be invoked into a loop in</span>
|
||
|
|
<a name="l00331"></a>00331 <span class="comment"> * order to serve all the pending events.<br></span>
|
||
|
|
<a name="l00332"></a>00332 <span class="comment"> * This means that Event Listeners with a lower event identifier have</span>
|
||
|
|
<a name="l00333"></a>00333 <span class="comment"> * an higher priority.</span>
|
||
|
|
<a name="l00334"></a>00334 <span class="comment"> *</span>
|
||
|
|
<a name="l00335"></a>00335 <span class="comment"> * @param[in] mask mask of the events that the function should wait for,</span>
|
||
|
|
<a name="l00336"></a>00336 <span class="comment"> * @p ALL_EVENTS enables all the events</span>
|
||
|
|
<a name="l00337"></a>00337 <span class="comment"> * @param[in] time the number of ticks before the operation timeouts,</span>
|
||
|
|
<a name="l00338"></a>00338 <span class="comment"> * the following special values are allowed:</span>
|
||
|
|
<a name="l00339"></a>00339 <span class="comment"> * - @a TIME_IMMEDIATE immediate timeout.</span>
|
||
|
|
<a name="l00340"></a>00340 <span class="comment"> * - @a TIME_INFINITE no timeout.</span>
|
||
|
|
<a name="l00341"></a>00341 <span class="comment"> * .</span>
|
||
|
|
<a name="l00342"></a>00342 <span class="comment"> * @return The mask of the lowest id served and cleared event.</span>
|
||
|
|
<a name="l00343"></a>00343 <span class="comment"> * @retval 0 if the specified timeout expired.</span>
|
||
|
|
<a name="l00344"></a>00344 <span class="comment"> */</span>
|
||
|
|
<a name="l00345"></a><a class="code" href="group__events.html#ga2944a7fc82e7cc15537f5a7c04f457d3">00345</a> <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> <a class="code" href="group__events.html#ga2944a7fc82e7cc15537f5a7c04f457d3" title="Waits for exactly one of the specified events.">chEvtWaitOneTimeout</a>(<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask, <a class="code" href="group__types.html#gae3e32a98d431a02106616da3071832dd" title="System Time, recommended fastest unsigned.">systime_t</a> time) {
|
||
|
|
<a name="l00346"></a>00346 <a class="code" href="struct_thread.html" title="Structure representing a thread.">Thread</a> *ctp = <a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a>;
|
||
|
|
<a name="l00347"></a>00347 <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> m;
|
||
|
|
<a name="l00348"></a>00348
|
||
|
|
<a name="l00349"></a>00349 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
|
||
|
|
<a name="l00350"></a>00350
|
||
|
|
<a name="l00351"></a>00351 <span class="keywordflow">if</span> ((m = (ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & mask)) == 0) {
|
||
|
|
<a name="l00352"></a>00352 <span class="keywordflow">if</span> (<a class="code" href="group__scheduler.html#gad1ac15e9e5fc17810a94a779257f3d29" title="Zero time specification for some syscalls with a timeout specification.">TIME_IMMEDIATE</a> == time)
|
||
|
|
<a name="l00353"></a>00353 <span class="keywordflow">return</span> (<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a>)0;
|
||
|
|
<a name="l00354"></a>00354 ctp-><a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#adb02f57eaf969c9e55f19a250e364f5a" title="Enabled events mask.">ewmask</a> = mask;
|
||
|
|
<a name="l00355"></a>00355 <span class="keywordflow">if</span> (<a class="code" href="group__scheduler.html#ga306e564f678c1a39139639490c77e78b" title="Puts the current thread to sleep into the specified state with timeout specification...">chSchGoSleepTimeoutS</a>(<a class="code" href="group__threads.html#gacd5f28475be26c300aa3444b9bad8feb" title="Thread state: Waiting in chEvtWaitXXX().">THD_STATE_WTOREVT</a>, time) < <a class="code" href="group__scheduler.html#gae1c86078318e11c2fa57ee3c2ec69f61" title="Default thread wakeup low level message.">RDY_OK</a>)
|
||
|
|
<a name="l00356"></a>00356 <span class="keywordflow">return</span> (<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a>)0;
|
||
|
|
<a name="l00357"></a>00357 m = ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & mask;
|
||
|
|
<a name="l00358"></a>00358 }
|
||
|
|
<a name="l00359"></a>00359 m &= -m;
|
||
|
|
<a name="l00360"></a>00360 ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> &= ~m;
|
||
|
|
<a name="l00361"></a>00361
|
||
|
|
<a name="l00362"></a>00362 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
|
||
|
|
<a name="l00363"></a>00363 <span class="keywordflow">return</span> m;
|
||
|
|
<a name="l00364"></a>00364 }
|
||
|
|
<a name="l00365"></a>00365 <span class="comment"></span>
|
||
|
|
<a name="l00366"></a>00366 <span class="comment">/**</span>
|
||
|
|
<a name="l00367"></a>00367 <span class="comment"> * @brief Waits for any of the specified events.</span>
|
||
|
|
<a name="l00368"></a>00368 <span class="comment"> * @details The function waits for any event among those specified in</span>
|
||
|
|
<a name="l00369"></a>00369 <span class="comment"> * @p mask to become pending then the events are cleared and</span>
|
||
|
|
<a name="l00370"></a>00370 <span class="comment"> * returned.</span>
|
||
|
|
<a name="l00371"></a>00371 <span class="comment"> *</span>
|
||
|
|
<a name="l00372"></a>00372 <span class="comment"> * @param[in] mask mask of the events that the function should wait for,</span>
|
||
|
|
<a name="l00373"></a>00373 <span class="comment"> * @p ALL_EVENTS enables all the events</span>
|
||
|
|
<a name="l00374"></a>00374 <span class="comment"> * @param[in] time the number of ticks before the operation timeouts,</span>
|
||
|
|
<a name="l00375"></a>00375 <span class="comment"> * the following special values are allowed:</span>
|
||
|
|
<a name="l00376"></a>00376 <span class="comment"> * - @a TIME_IMMEDIATE immediate timeout.</span>
|
||
|
|
<a name="l00377"></a>00377 <span class="comment"> * - @a TIME_INFINITE no timeout.</span>
|
||
|
|
<a name="l00378"></a>00378 <span class="comment"> * .</span>
|
||
|
|
<a name="l00379"></a>00379 <span class="comment"> * @return The mask of the served and cleared events.</span>
|
||
|
|
<a name="l00380"></a>00380 <span class="comment"> * @retval 0 if the specified timeout expired.</span>
|
||
|
|
<a name="l00381"></a>00381 <span class="comment"> */</span>
|
||
|
|
<a name="l00382"></a><a class="code" href="group__events.html#gaf690406ccc833e2c9235e7e2041a6715">00382</a> <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> <a class="code" href="group__events.html#gaf690406ccc833e2c9235e7e2041a6715" title="Waits for any of the specified events.">chEvtWaitAnyTimeout</a>(<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask, <a class="code" href="group__types.html#gae3e32a98d431a02106616da3071832dd" title="System Time, recommended fastest unsigned.">systime_t</a> time) {
|
||
|
|
<a name="l00383"></a>00383 <a class="code" href="struct_thread.html" title="Structure representing a thread.">Thread</a> *ctp = <a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a>;
|
||
|
|
<a name="l00384"></a>00384 <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> m;
|
||
|
|
<a name="l00385"></a>00385
|
||
|
|
<a name="l00386"></a>00386 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
|
||
|
|
<a name="l00387"></a>00387
|
||
|
|
<a name="l00388"></a>00388 <span class="keywordflow">if</span> ((m = (ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & mask)) == 0) {
|
||
|
|
<a name="l00389"></a>00389 <span class="keywordflow">if</span> (<a class="code" href="group__scheduler.html#gad1ac15e9e5fc17810a94a779257f3d29" title="Zero time specification for some syscalls with a timeout specification.">TIME_IMMEDIATE</a> == time)
|
||
|
|
<a name="l00390"></a>00390 <span class="keywordflow">return</span> (<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a>)0;
|
||
|
|
<a name="l00391"></a>00391 ctp-><a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#adb02f57eaf969c9e55f19a250e364f5a" title="Enabled events mask.">ewmask</a> = mask;
|
||
|
|
<a name="l00392"></a>00392 <span class="keywordflow">if</span> (<a class="code" href="group__scheduler.html#ga306e564f678c1a39139639490c77e78b" title="Puts the current thread to sleep into the specified state with timeout specification...">chSchGoSleepTimeoutS</a>(<a class="code" href="group__threads.html#gacd5f28475be26c300aa3444b9bad8feb" title="Thread state: Waiting in chEvtWaitXXX().">THD_STATE_WTOREVT</a>, time) < <a class="code" href="group__scheduler.html#gae1c86078318e11c2fa57ee3c2ec69f61" title="Default thread wakeup low level message.">RDY_OK</a>)
|
||
|
|
<a name="l00393"></a>00393 <span class="keywordflow">return</span> (<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a>)0;
|
||
|
|
<a name="l00394"></a>00394 m = ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & mask;
|
||
|
|
<a name="l00395"></a>00395 }
|
||
|
|
<a name="l00396"></a>00396 ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> &= ~m;
|
||
|
|
<a name="l00397"></a>00397
|
||
|
|
<a name="l00398"></a>00398 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
|
||
|
|
<a name="l00399"></a>00399 <span class="keywordflow">return</span> m;
|
||
|
|
<a name="l00400"></a>00400 }
|
||
|
|
<a name="l00401"></a>00401 <span class="comment"></span>
|
||
|
|
<a name="l00402"></a>00402 <span class="comment">/**</span>
|
||
|
|
<a name="l00403"></a>00403 <span class="comment"> * @brief Waits for all the specified events.</span>
|
||
|
|
<a name="l00404"></a>00404 <span class="comment"> * @details The function waits for all the events specified in @p mask to</span>
|
||
|
|
<a name="l00405"></a>00405 <span class="comment"> * become pending then the events are cleared and returned.</span>
|
||
|
|
<a name="l00406"></a>00406 <span class="comment"> *</span>
|
||
|
|
<a name="l00407"></a>00407 <span class="comment"> * @param[in] mask mask of the event ids that the function should wait for</span>
|
||
|
|
<a name="l00408"></a>00408 <span class="comment"> * @param[in] time the number of ticks before the operation timeouts,</span>
|
||
|
|
<a name="l00409"></a>00409 <span class="comment"> * the following special values are allowed:</span>
|
||
|
|
<a name="l00410"></a>00410 <span class="comment"> * - @a TIME_IMMEDIATE immediate timeout.</span>
|
||
|
|
<a name="l00411"></a>00411 <span class="comment"> * - @a TIME_INFINITE no timeout.</span>
|
||
|
|
<a name="l00412"></a>00412 <span class="comment"> * .</span>
|
||
|
|
<a name="l00413"></a>00413 <span class="comment"> * @return The mask of the served and cleared events.</span>
|
||
|
|
<a name="l00414"></a>00414 <span class="comment"> * @retval 0 if the specified timeout expired.</span>
|
||
|
|
<a name="l00415"></a>00415 <span class="comment"> */</span>
|
||
|
|
<a name="l00416"></a><a class="code" href="group__events.html#ga90d702300eecee3d05f83e95b155c3ee">00416</a> <a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> <a class="code" href="group__events.html#ga90d702300eecee3d05f83e95b155c3ee" title="Waits for all the specified events.">chEvtWaitAllTimeout</a>(<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a> mask, <a class="code" href="group__types.html#gae3e32a98d431a02106616da3071832dd" title="System Time, recommended fastest unsigned.">systime_t</a> time) {
|
||
|
|
<a name="l00417"></a>00417 <a class="code" href="struct_thread.html" title="Structure representing a thread.">Thread</a> *ctp = <a class="code" href="group__scheduler.html#ga1a5fddde56420e8accd0c09c1abb32a7" title="Current thread pointer access macro.">currp</a>;
|
||
|
|
<a name="l00418"></a>00418
|
||
|
|
<a name="l00419"></a>00419 <a class="code" href="group__system.html#ga9f6573c0763d1e4e97c63c62edad6e42" title="Enters the kernel lock mode.">chSysLock</a>();
|
||
|
|
<a name="l00420"></a>00420
|
||
|
|
<a name="l00421"></a>00421 <span class="keywordflow">if</span> ((ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> & mask) != mask) {
|
||
|
|
<a name="l00422"></a>00422 <span class="keywordflow">if</span> (<a class="code" href="group__scheduler.html#gad1ac15e9e5fc17810a94a779257f3d29" title="Zero time specification for some syscalls with a timeout specification.">TIME_IMMEDIATE</a> == time)
|
||
|
|
<a name="l00423"></a>00423 <span class="keywordflow">return</span> (<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a>)0;
|
||
|
|
<a name="l00424"></a>00424 ctp-><a class="code" href="struct_thread.html#a72cd0424b6098ca241fac1f74d21b56a" title="State-specific fields.">p_u</a>.<a class="code" href="struct_thread.html#adb02f57eaf969c9e55f19a250e364f5a" title="Enabled events mask.">ewmask</a> = mask;
|
||
|
|
<a name="l00425"></a>00425 <span class="keywordflow">if</span> (<a class="code" href="group__scheduler.html#ga306e564f678c1a39139639490c77e78b" title="Puts the current thread to sleep into the specified state with timeout specification...">chSchGoSleepTimeoutS</a>(<a class="code" href="group__threads.html#ga1227eb701b7ecaa8e8cd03edeeb79a92" title="Thread state: Waiting in chEvtWaitAllTimeout().">THD_STATE_WTANDEVT</a>, time) < <a class="code" href="group__scheduler.html#gae1c86078318e11c2fa57ee3c2ec69f61" title="Default thread wakeup low level message.">RDY_OK</a>)
|
||
|
|
<a name="l00426"></a>00426 <span class="keywordflow">return</span> (<a class="code" href="group__types.html#gabff0c32475baf20ea8c5c710d6e8b708" title="Event Mask, recommended fastest unsigned.">eventmask_t</a>)0;
|
||
|
|
<a name="l00427"></a>00427 }
|
||
|
|
<a name="l00428"></a>00428 ctp-><a class="code" href="struct_thread.html#aa571d2963bd8100fa210715dc5669522" title="Pending events mask.">p_epending</a> &= ~mask;
|
||
|
|
<a name="l00429"></a>00429
|
||
|
|
<a name="l00430"></a>00430 <a class="code" href="group__system.html#ga5a257fa58a09815eb64a45e2dfbdc22e" title="Leaves the kernel lock mode.">chSysUnlock</a>();
|
||
|
|
<a name="l00431"></a>00431 <span class="keywordflow">return</span> mask;
|
||
|
|
<a name="l00432"></a>00432 }
|
||
|
|
<a name="l00433"></a>00433 <span class="preprocessor">#endif </span><span class="comment">/* CH_USE_EVENTS_TIMEOUT */</span>
|
||
|
|
<a name="l00434"></a>00434
|
||
|
|
<a name="l00435"></a>00435 <span class="preprocessor">#endif </span><span class="comment">/* CH_USE_EVENTS */</span>
|
||
|
|
<a name="l00436"></a>00436 <span class="comment"></span>
|
||
|
|
<a name="l00437"></a>00437 <span class="comment">/** @} */</span>
|
||
|
|
</pre></div></div>
|
||
|
|
<hr size="1"><address style="text-align: right;"><small>
|
||
|
|
Generated on Sun Jul 11 13:13:01 2010 for ChibiOS/RT by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.6.3</small></address>
|
||
|
|
</body>
|
||
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</html>
|