📄 libs106.htm
字号:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<meta name="GENERATOR" content="Quadralay WebWorks Publisher Professional Edition 6.0.5">
<meta name="TEMPLATEBASE" content="book_html">
<meta name="LASTUPDATED" content="12/01/03 14:15:58">
<title>semaphore_signal</title>
<STYLE TYPE="text/css">
<!--
span.Signal { text-transform: uppercase; font-family: Verdana }
-->
</STYLE>
</head>
<body link="#3366CC" vlink="#9999CC" text="#000000" alink="#0000CC" bgcolor="#FFFFFF"
background="images/backgrnd.gif">
<p><img src="images/stlogo.gif" width="106" height="83" align="left"
alt="logo here!"> </p>
<table width="331" border="0" align="right" cellpadding="0" cellspacing="0">
<tr>
<td><a href="os20toc.htm"><img src="images/navtoc.gif" width="84" height="23"
border="0" alt="TOC"> </a></td>
<td><a href="libs105.htm"><img src="images/navprev.gif" width="80" height="23"
border="0" alt="PREV"> </a></td>
<td><a href="libs107.htm"><img src="images/navnext.gif" width="83" height="23"
border="0" alt="NEXT"> </a></td>
<td><a href="os20ix.htm"><img src="images/navidx.gif" width="84" height="23"
border="0" alt="INDEX"> </a></td>
</tr>
</table>
<p><br clear="all">
</p>
<hr align="left">
<blockquote>
<h2>
<a name="1208574"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">semaphore_signal</font>
</h2><hr>
<p>
<a name="1208575"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Signal a semaphore</font>
</p>
<h3>
<a name="1208576"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Synopsis</font>
</h3>
<a name="1208577"> </a><font size=2 face=Courier><strong>#include <semaphor.h><br></strong></font>
<a name="1208578"> </a><font size=2 face=Courier><strong>void semaphore_signal( semaphore_t* <font size=2 face=Courier><strong><em>Sem</em></strong></font> );<br></strong></font>
<h3>
<a name="1208579"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Arguments</font>
</h3>
<p>
<a name="1233465"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><b><font size=2 face=Courier><strong>semaphre_t* </strong></font><font size=2 face=Courier><strong><em>Sem</em></strong></font></b></font>
<br>
<dl><dl> <dl>
<dt> <a name="1233467"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Pointer to a semaphore</font>
</dl>
</dl></dl>
<h3>
<a name="1208582"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Results</font>
</h3>
<p>
<a name="1208583"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
</p>
<h3>
<a name="1208584"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Errors</font>
</h3>
<p>
<a name="1208585"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">None</font>
</p>
<h3>
<a name="1208586"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Description</font>
</h3>
<p>
<a name="1208587"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Perform a signal operation on the specified semaphore. The exact behavior of this function depends on the semaphore type. The operation checks the queue of tasks waiting for the semaphore, if the list is not empty, then the first task on the list is restarted, possibly preempting the current task. Otherwise the semaphore count is incremented, and the task continues running.</font>
</p>
<h3>
<a name="1208588"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Callable from</font>
</h3>
<p>
<a name="1208589"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">A task, interrupt service routine or a high priority process (on an ST20C2).</font>
</p>
<h3>
<a name="1208590"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">See also</font>
</h3>
<p>
<a name="1208591"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif"><a href="libs107.htm#1208594"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>semaphore_wait</i></font></a></font>
</p>
</blockquote>
<hr>
<table width="331" border="0" align="left" cellpadding="0" cellspacing="0">
<tr>
<td><a href="os20toc.htm"><img src="images/navtoc.gif" width="84" height="23"
border="0" alt="TOC"> </a></td>
<td><a href="libs105.htm"><img src="images/navprev.gif" width="80" height="23"
border="0" alt="PREV"> </a></td>
<td><a href="libs107.htm"><img src="images/navnext.gif" width="83" height="23"
border="0" alt="NEXT"> </a></td>
<td><a href="os20ix.htm"><img src="images/navidx.gif" width="84" height="23"
border="0" alt="INDEX"> </a></td>
</tr>
</table>
<font size=1 face="Verdana, Arial, Helvetica, sans-serif"> © 2001, 2002, 2003 STMicroelectronics. All Rights Reserved.<br>
ADCS 7473749B</font>
</body>
</html>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -