1<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 2<html xml:lang="en-US" lang="en-US" xmlns="http://www.w3.org/1999/xhtml"> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <meta http-equiv="Content-Style-Type" content="text/css" /> 6 <link rel="stylesheet" href="../../../css/manpage.css" type="text/css" /> 7<title>TryAcquire</title> 8 </head> 9 <body> 10<h1><CODE><a href="../../../nn/Overview.html">nn</a>::<a href="../../../nn/os/Overview.html">os</a>::<a href="../../../nn/os/LightSemaphore/Overview.html">LightSemaphore</a>::TryAcquire</CODE> Member Function</h1> 11<h2>Syntax</h2> 12 <div class="section"> 13 <pre class="definition">#include <nn/os.h> 14 15bool TryAcquire(); 16 17bool TryAcquire( 18 <a href="../../../nn/fnd/TimeSpan/Overview.html">fnd::TimeSpan</a> timeout 19); 20</pre> 21 </div> 22<h2>List of Overloaded Member Functions</h2> 23 <div class="section"> 24 <table class="members"> 25 <tr> 26 <td> 27<a href="./TryAcquire(0).html"><CODE>TryAcquire( )</CODE> </a> 28 </td> 29<td>Tries to decrement the counter value by one.</td> 30 </tr> 31 <tr> 32 <td> 33<a href="./TryAcquire(1).html"><CODE>TryAcquire(fnd::TimeSpan)</CODE> </a> 34 </td> 35<td>Tries to decrement the counter value by one.</td> 36 </tr> </table> 37 </div> 38<h2>Description of <CODE>TryAcquire( )</CODE></h2> 39<div class="section"><p>If the counter was already <CODE>0</CODE>, this function returns without decrementing it.</p><!-- write here --></div> 40<h2>Description of <CODE>TryAcquire(fnd::TimeSpan)</CODE></h2> 41<div class="section"><p>If the counter was already <CODE>0</CODE>, this function waits for it to become <CODE>1</CODE> or greater. The maximum wait time is specified by <SPAN class="argument">timeout</SPAN>.</p><p>If the timeout elapses and the counter has not become <CODE>1</CODE> or more, this function returns without decrementing the counter.</p><!-- write here --></div> 42 <hr><p>CONFIDENTIAL</p></body> 43</html>