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<TITLE>PTHREAD_DETACH(3) manual page</TITLE>
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<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_detach - put a running thread in the detached state
</P>
<H2><A HREF="#toc1" NAME="sect1">Synopsis</A></H2>
<P><B>#include <pthread.h></B>
</P>
<P><B>int pthread_detach(pthread_t </B><I>th</I><B>);</B>
</P>
<H2><A HREF="#toc2" NAME="sect2">Description</A></H2>
<P><B>pthread_detach</B> puts the thread <I>th</I> in the detached
state. This guarantees that the memory resources consumed by <I>th</I>
will be freed immediately when <I>th</I> terminates. However, this
prevents other threads from synchronizing on the termination of <I>th</I>
using <B>pthread_join</B>.
</P>
<P>A thread can be created initially in the detached state, using the
<B>detachstate</B> attribute to <A HREF="pthread_create.html"><B>pthread_create</B>(3)</A>
. In contrast, <B>pthread_detach</B> applies to threads created in
the joinable state, and which need to be put in the detached state
later.
</P>
<P>After <B>pthread_detach</B> completes, subsequent attempts to
perform <B>pthread_join</B> on <I>th</I> will fail. If another thread
is already joining the thread <I>th</I> at the time <B>pthread_detach</B>
is called, <B>pthread_detach</B> does nothing and leaves <I>th</I> in
the joinable state.
</P>
<H2><A HREF="#toc3" NAME="sect3">Return Value</A></H2>
<P>On success, 0 is returned. On error, a non-zero error code is
returned.
</P>
<H2><A HREF="#toc4" NAME="sect4">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 STYLE="margin-bottom: 0.5cm">
the thread <I>th</I> is already in the detached state
</DD></DL>
<H2>
<A HREF="#toc5" NAME="sect5">Author</A></H2>
<P>Xavier Leroy <Xavier.Leroy@inria.fr>
</P>
<H2><A HREF="#toc6" NAME="sect6">See Also</A></H2>
<P><A HREF="pthread_create.html"><B>pthread_create</B>(3)</A> ,
<A HREF="pthread_join.html"><B>pthread_join</B>(3)</A> ,
<A HREF="pthread_attr_setdetachstate.html"><B>pthread_attr_setdetachstate</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">Return
Value</A>
</P>
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect4" NAME="toc4">Errors</A>
</P>
<LI><P STYLE="margin-bottom: 0cm"><A HREF="#sect5" NAME="toc5">Author</A>
</P>
<LI><P><A HREF="#sect6" NAME="toc6">See Also</A>
</P>
</UL>
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