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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
+<HTML>
+<HEAD>
+ <META HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=utf-8">
+ <TITLE>PTHREAD_JOIN(3) manual page</TITLE>
+ <META NAME="GENERATOR" CONTENT="OpenOffice.org 1.1.3 (Linux)">
+ <META NAME="CREATED" CONTENT="20050504;18232700">
+ <META NAME="CHANGED" CONTENT="20050504;18421400">
+ <!-- manual page source format generated by PolyglotMan v3.2, -->
+ <!-- available at http://polyglotman.sourceforge.net/ -->
+</HEAD>
+<BODY LANG="en-GB" BGCOLOR="#ffffff" DIR="LTR">
+<H4>POSIX Threads for Windows – REFERENCE - <A HREF="http://sources.redhat.com/pthreads-win32">Pthreads-w32</A></H4>
+<P><A HREF="index.html">Reference Index</A></P>
+<P><A HREF="#toc">Table of Contents</A></P>
+<H2><A HREF="#toc0" NAME="sect0">Name</A></H2>
+<P>pthread_join - wait for termination of another thread
+</P>
+<H2><A HREF="#toc1" NAME="sect1">Synopsis</A></H2>
+<P><B>#include &lt;pthread.h&gt;</B>
+</P>
+<P><B>int pthread_join(pthread_t </B><I>th</I><B>, void
+**</B><I>thread_return</I><B>);</B>
+</P>
+<H2><A HREF="#toc2" NAME="sect2">Description</A></H2>
+<P><B>pthread_join</B> suspends the execution of the calling thread
+until the thread identified by <I>th</I> terminates, either by
+calling <A HREF="pthread_exit.html"><B>pthread_exit</B>(3)</A> or by
+being cancelled.
+</P>
+<P>If <I>thread_return</I> is not <B>NULL</B>, the return value of <I>th</I>
+is stored in the location pointed to by <I>thread_return</I>. The
+return value of <I>th</I> is either the argument it gave to
+<A HREF="pthread_exit.html"><B>pthread_exit</B>(3)</A> , or
+<B>PTHREAD_CANCELED</B> if <I>th</I> was cancelled.
+</P>
+<P>The joined thread <B>th</B> must be in the joinable state: it must
+not have been detached using <A HREF="pthread_detach.html"><B>pthread_detach</B>(3)</A>
+or the <B>PTHREAD_CREATE_DETACHED</B> attribute to <A HREF="pthread_create.html"><B>pthread_create</B>(3)</A>
+.
+</P>
+<P>When a joinable thread terminates, its memory resources (thread
+descriptor and stack) are not deallocated until another thread
+performs <B>pthread_join</B> on it. Therefore, <B>pthread_join</B>
+must be called once for each joinable thread created to avoid memory
+leaks.
+</P>
+<P>At most one thread can wait for the termination of a given thread.
+Calling <B>pthread_join</B> on a thread <I>th</I> on which another
+thread is already waiting for termination returns an error.
+</P>
+<H2><A HREF="#toc3" NAME="sect3">Cancellation</A></H2>
+<P><B>pthread_join</B> is a cancellation point. If a thread is
+cancelled while suspended in <B>pthread_join</B>, the thread
+execution resumes immediately and the cancellation is executed
+without waiting for the <I>th</I> thread to terminate. If
+cancellation occurs during <B>pthread_join</B>, the <I>th</I> thread
+remains not joined.
+</P>
+<H2><A HREF="#toc4" NAME="sect4">Return Value</A></H2>
+<P>On success, the return value of <I>th</I> is stored in the
+location pointed to by <I>thread_return</I>, and 0 is returned. On
+error, a non-zero error code is returned.
+</P>
+<H2><A HREF="#toc5" NAME="sect5">Errors</A></H2>
+<DL>
+ <DT><B>ESRCH</B>
+ </DT><DD>
+ No thread could be found corresponding to that specified by <I>th</I>.
+ </DD><DT>
+ <B>EINVAL</B>
+ </DT><DD>
+ The <I>th</I> thread has been detached.
+ </DD><DT>
+ <B>EINVAL</B>
+ </DT><DD>
+ Another thread is already waiting on termination of <I>th</I>.
+ </DD><DT>
+ <B>EDEADLK</B>
+ </DT><DD STYLE="margin-bottom: 0.5cm">
+ The <I>th</I> argument refers to the calling thread.
+ </DD></DL>
+<H2>
+<A HREF="#toc6" NAME="sect6">Author</A></H2>
+<P>Xavier Leroy &lt;Xavier.Leroy@inria.fr&gt;
+</P>
+<H2><A HREF="#toc7" NAME="sect7">See Also</A></H2>
+<P><A HREF="pthread_exit.html"><B>pthread_exit</B>(3)</A> ,
+<A HREF="pthread_detach.html"><B>pthread_detach</B>(3)</A> ,
+<A HREF="pthread_create.html"><B>pthread_create</B>(3)</A> ,
+<A HREF="pthread_attr_setdetachstate.html"><B>pthread_attr_setdetachstate</B>(3)</A>
+, <A HREF="pthread_cleanup_push.html"><B>pthread_cleanup_push</B>(3)</A>
+, <A HREF="pthread_key_create.html"><B>pthread_key_create</B>(3)</A>
+.
+</P>
+<HR>
+<P><A NAME="toc"></A><B>Table of Contents</B></P>
+<UL>
+ <LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect0" NAME="toc0">Name</A>
+ </P>
+ <LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect1" NAME="toc1">Synopsis</A>
+ </P>
+ <LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect2" NAME="toc2">Description</A>
+ </P>
+ <LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect3" NAME="toc3">Cancellation</A>
+ </P>
+ <LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect4" NAME="toc4">Return
+ Value</A>
+ </P>
+ <LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect5" NAME="toc5">Errors</A>
+ </P>
+ <LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect6" NAME="toc6">Author</A>
+ </P>
+ <LI><P><A HREF="#sect7" NAME="toc7">See Also</A>
+ </P>
+</UL>
+</BODY>
+</HTML>