47 lines
3.0 KiB
HTML
47 lines
3.0 KiB
HTML
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Similarities to message queues" />
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<meta name="abstract" content="Data queues are similar to message queues, in that procedures and programs can send data to the queue that is received later by another procedure or program." />
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<meta name="description" content="Data queues are similar to message queues, in that procedures and programs can send data to the queue that is received later by another procedure or program." />
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<title>Similarities to message queues</title>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Similarities to message queues</h1>
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<div><p>Data queues are similar to message queues, in that procedures and
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programs can send data to the queue that is received later by another procedure
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or program.</p>
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<p>However, more than one program can have a receive pending on a data queue
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at the same time, while only one program can have a receive pending on a message
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queue at the same time. (Only one program receives an entry from a data queue,
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even if more than one program is waiting.) Entries on a data queue are handled
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in either first-in-first-out, last-in-first-out, or keyed-queue order. When
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an entry is received, it is removed from the data queue.</p>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="qcomm.htm" title="Data queues are a type of system object that you can create, to which one HLL procedure or program can send data, and from which another HLL procedure or program can receive data.">Use data queues</a></div>
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