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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>pthread_attr_init</title></head><body bgcolor=white><center><font size=2>The Single UNIX ® Specification, Version 2<br>Copyright © 1997 The Open Group</font></center><hr size=2 noshade><h4><a name = "tag_000_007_1117"> </a>NAME</h4><blockquote>pthread_attr_init, pthread_attr_destroy- initialise and destroy threads attribute object</blockquote><h4><a name = "tag_000_007_1118"> </a>SYNOPSIS</h4><blockquote><pre><code>#include <<a href="pthread.h.html">pthread.h</a>>int pthread_attr_init(pthread_attr_t *<i>attr</i>);int pthread_attr_destroy(pthread_attr_t *<i>attr</i>);</code></pre></blockquote><h4><a name = "tag_000_007_1119"> </a>DESCRIPTION</h4><blockquote>The function<i>pthread_attr_init()</i>initialises a thread attributes object<i>attr</i>with the default value for all of the individual attributesused by a given implementation.<p>The resulting attribute object(possibly modified by setting individual attribute values),when used by<i><a href="pthread_create.html">pthread_create()</a></i>,defines the attributes of the thread created.A single attributes object can be used in multiple simultaneous calls to<i><a href="pthread_create.html">pthread_create()</a></i>.<p>The<i>pthread_attr_destroy()</i>function is used to destroy a thread attributes object.An implementation may cause<i>pthread_attr_destroy()</i>to set<i>attr</i>to an implementation-dependent invalid value.The behaviour of using the attribute after it has been destroyed is undefined.</blockquote><h4><a name = "tag_000_007_1120"> </a>RETURN VALUE</h4><blockquote>Upon successful completion,<i>pthread_attr_init()</i>and<i>pthread_attr_destroy()</i>return a value of 0.Otherwise, an error number is returned to indicate the error.</blockquote><h4><a name = "tag_000_007_1121"> </a>ERRORS</h4><blockquote>The <i>pthread_attr_init()</i>function will fail if:<dl compact><dt>[ENOMEM]<dd>Insufficient memory exists to initialise the thread attributes object.</dl><p>These functions will not return an error code of [EINTR].</blockquote><h4><a name = "tag_000_007_1122"> </a>EXAMPLES</h4><blockquote>None.</blockquote><h4><a name = "tag_000_007_1123"> </a>APPLICATION USAGE</h4><blockquote>None.</blockquote><h4><a name = "tag_000_007_1124"> </a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_000_007_1125"> </a>SEE ALSO</h4><blockquote><i><a href="pthread_attr_setstackaddr.html">pthread_attr_setstackaddr()</a></i>,<i><a href="pthread_attr_setstacksize.html">pthread_attr_setstacksize()</a></i>,<i><a href="pthread_attr_setdetachstate.html">pthread_attr_setdetachstate()</a></i>,<i><a href="pthread_create.html">pthread_create()</a></i>,<i><a href="pthread.h.html"><pthread.h></a></i>.</blockquote><h4>DERIVATION</h4><blockquote>Derived from the POSIX Threads Extension (1003.1c-1995)</blockquote><hr size=2 noshade><center><font size=2>UNIX ® is a registered Trademark of The Open Group.<br>Copyright © 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>⌨️ 快捷键说明
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