15 lines
2.6 KiB
HTML
15 lines
2.6 KiB
HTML
<?xml version="1.0" encoding="ISO-8859-1" standalone="no"?>
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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>trap</title><link rel="stylesheet" href="../../jargon.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.61.0"/><link rel="home" href="../index.html" title="The Jargon File"/><link rel="up" href="../T.html" title="T"/><link rel="previous" href="trampoline.html" title="trampoline"/><link rel="next" href="trap-door.html" title="trap door"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">trap</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="trampoline.html">Prev</a> </td><th width="60%" align="center">T</th><td width="20%" align="right"> <a accesskey="n" href="trap-door.html">Next</a></td></tr></table><hr/></div><dt><a id="trap"/><dt xmlns="" id="trap"><b>trap</b></dt></dt><dd><p> 1. <span class="grammar">n.</span> A program interrupt,
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usually an interrupt caused by some exceptional situation in the user
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program. In most cases, the OS performs some action, then returns control
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to the program.</p></dd><dd><p> 2. <span class="grammar">vi.</span> To cause a trap.
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“<span class="quote">These instructions trap to the monitor.</span>” Also used
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transitively to indicate the cause of the trap. “<span class="quote">The monitor traps
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all input/output instructions.</span>”</p></dd><dd><p>This term is associated with assembler programming (<span class="firstterm">interrupt</span> or <span class="firstterm">exception</span> is more common among
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<a href="../H/HLL.html"><i class="glossterm">HLL</i></a> programmers) and appears to be fading into
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history among programmers as the role of assembler continues to shrink.
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However, it is still important to computer architects and systems hackers
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(see <a href="../S/system.html"><i class="glossterm">system</i></a>, sense 1), who use it to distinguish
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deterministically repeatable exceptions from timing-dependent ones (such as
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I/O interrupts).</p></dd><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="trampoline.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="../T.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="trap-door.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">trampoline </td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> trap door</td></tr></table></div></body></html>
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