111 lines
4.6 KiB
HTML
111 lines
4.6 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<meta name="DC.Type" content="reference" />
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<meta name="DC.Title" content="Example: Set a thread attribute in a Pthread program" />
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<meta name="abstract" content="This example shows how to set the "detach state" thread attribute in a Pthread program." />
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<meta name="description" content="This example shows how to set the "detach state" thread attribute in a Pthread program." />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Example: Set a thread attribute in a Pthread program</title>
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</head>
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<body id="rzahwe11-e11rx"><a name="rzahwe11-e11rx"><!-- --></a>
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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">Example: Set a thread attribute in a Pthread program</h1>
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<div><p>This example shows how to set the "detach state" thread attribute
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in a Pthread program.</p>
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<div class="section"><div class="note"><span class="notetitle">Note:</span> By using the code examples, you agree to the terms of the <a href="codedisclaimer.htm">Code license and disclaimer information</a>.</div>
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</div>
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<div class="section"><div class="p"> <pre>/*
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Filename: ATEST10.QCSRC
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The output of this example is as follows:
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Enter Testcase - LIBRARY/ATEST10
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Create a default thread attributes object
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Set the detach state thread attribute
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Create a thread using the new attributes
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Destroy thread attributes object
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Join now fails because the detach state attribute was changed
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Entered the thread
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Main completed
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*/
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#define _MULTI_THREADED
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define checkResults(string, val) { \
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if (val) { \
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printf("Failed with %d at %s", val, string); \
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exit(1); \
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} \
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}
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void *theThread(void *parm)
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{
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printf("Entered the thread\n");
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return NULL;
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}
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int main(int argc, char **argv)
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{
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pthread_attr_t attr;
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pthread_t thread;
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int rc=0;
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printf("Enter Testcase - %s\n", argv[0]);
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printf("Create a default thread attributes object\n");
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rc = pthread_attr_init(&attr);
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checkResults("pthread_attr_init()\n", rc);
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printf("Set the detach state thread attribute\n");
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rc = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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checkResults("pthread_attr_setdetachstate()\n", rc);
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printf("Create a thread using the new attributes\n");
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rc = pthread_create(&thread, &attr, theThread, NULL);
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checkResults("pthread_create()\n", rc);
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printf("Destroy thread attributes object\n");
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rc = pthread_attr_destroy(&attr);
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checkResults("pthread_attr_destroy()\n", rc);
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printf("Join now fails because the detach state attribute was changed\n");
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rc = pthread_join(thread, NULL);
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if (rc==0) {
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printf("Unexpected results from pthread_join()\n");
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exit(1);
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}
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sleep(2);
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printf("Main completed\n");
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return 0;
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}
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</pre>
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</div>
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</div>
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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="rzahwattco.htm" title="Thread attributes are thread characteristics that affect the behavior of the thread. Different attributes are available depending on the programming language and API set that you are using.">Thread attributes</a></div>
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</div>
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</div>
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</body>
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</html>
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