framework/src/ant/apache-ant-1.9.6/manual/Tasks/sleep.html


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<title>Sleep Task</title>
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<h2><a name="sleep">Sleep</a></h2>
<h3>Description</h3>
<p> A task for sleeping a short period of time, useful when a build or deployment 
  process requires an interval between tasks.</p>

<h3>Parameters</h3>
<table border="1" cellpadding="2" cellspacing="0">
  <tr> 
    <td valign="top"><b>Attribute</b></td>
    <td valign="top"><b>Description</b></td>
    <td align="center" valign="top"><b>Required</b></td>
  </tr>
  <tr> 
    <td valign="top">hours</td>
    <td valign="top">hours to to add to the sleep time</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr> 
    <td valign="top">minutes</td>
    <td valign="top"> minutes to add to the sleep time</td>
    <td valign="top" align="center">No</td>
  </tr>
  <tr> 
    <td valign="top">seconds</td>
    <td valign="top">seconds to add to the sleep time</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr> 
    <td valign="top">milliseconds</td>
    <td valign="top">milliseconds to add to the sleep time</td>
    <td align="center" valign="top">No</td>
  </tr>
  <tr> 
    <td valign="top">failonerror</td>
    <td valign="top">flag controlling whether to break the build on an error. 
    </td>
    <td align="center" valign="top">No</td>
  </tr>
</table>
<p>The sleep time is the sum of specified values, hours, minutes seconds and milliseconds. 
  A negative value can be supplied to any of them provided the total sleep time 
  is positive</p>
<p>Note that sleep times are always hints to be interpred by the OS how it feels 
  - small times may either be ignored or rounded up to a minimum timeslice. Note 
  also that the system clocks often have a fairly low granularity too, which complicates 
  measuring how long a sleep actually took.</p>
<h3>Examples</h3>
<pre>   &lt;sleep milliseconds=&quot;10&quot;/&gt;</pre>
Sleep for about 10 mS. 
<pre>   &lt;sleep seconds=&quot;2&quot;/&gt;</pre>
Sleep for about 2 seconds. 
<pre>   &lt;sleep hours=&quot;1&quot; minutes=&quot;-59&quot; seconds=&quot;-58&quot;/&gt;</pre>
<p>Sleep for one hour less 59:58, or two seconds again </p>
<pre>   &lt;sleep/&gt;</pre>
Sleep for no time at all. This may yield the CPU time to another thread or process. 


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