libs106.htm

来自「ST20 Embedded Toolset R2.0.5用于开发基于ST20芯片」· HTM 代码 · 共 149 行

HTM
149 行
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 &lt;semaphor.h&gt;<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">&nbsp; &copy; 2001, 2002, 2003 STMicroelectronics. All Rights Reserved.<br>
&nbsp; ADCS 7473749B</font>
</body>
</html>

libs106.htm - 源码说明

本页面展示了「ST20 Embedded Toolset R2.0.5用于开发基于ST20芯片机顶盒软件的开发平台,2.0.5版本,国内找不到的.在国外论坛上花了N天才找到!」中的 libs106.htm 源码文件，采用 HTM 编程语言编写，共 149 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

虫虫下载站收录了大量与Embedded相关的技术资源，包括源代码、技术文档、电路图等，是电子工程师和嵌入式开发者的专业学习平台。

⌨️ 快捷键说明

复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?