<!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_CREATE(3) manual page</TITLE> <META NAME="GENERATOR" CONTENT="OpenOffice.org 1.1.3 (Linux)"> <META NAME="CREATED" CONTENT="20050504;19394700"> <META NAME="CHANGED" CONTENT="20050504;20140200"> <!-- 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_create - create a new thread </P> <H2><A HREF="#toc1" NAME="sect1">Synopsis</A></H2> <P><B>#include <pthread.h></B> </P> <P><B>int pthread_create(pthread_t * </B><I>thread</I><B>, pthread_attr_t * </B><I>attr</I><B>, void * (*</B><I>start_routine</I><B>)(void *), void * </B><I>arg</I><B>);</B> </P> <H2><A HREF="#toc2" NAME="sect2">Description</A></H2> <P><B>pthread_create</B> creates a new thread of control that executes concurrently with the calling thread. The new thread applies the function <I>start_routine</I> passing it <I>arg</I> as first argument. The new thread terminates either explicitly, by calling <A HREF="pthread_exit.html"><B>pthread_exit</B>(3)</A> , or implicitly, by returning from the <I>start_routine</I> function. The latter case is equivalent to calling <A HREF="pthread_exit.html"><B>pthread_exit</B>(3)</A> with the result returned by <I>start_routine</I> as exit code. </P> <P>The initial signal state of the new thread is inherited from it's creating thread and there are no pending signals. <B>Pthreads-w32</B> does not yet implement signals.</P> <P>The <I>attr</I> argument specifies thread attributes to be applied to the new thread. See <A HREF="pthread_attr_init.html"><B>pthread_attr_init</B>(3)</A> for a complete list of thread attributes. The <I>attr</I> argument can also be <B>NULL</B>, in which case default attributes are used: the created thread is joinable (not detached) and has default (non real-time) scheduling policy. </P> <H2><A HREF="#toc3" NAME="sect3">Return Value</A></H2> <P>On success, the identifier of the newly created thread is stored in the location pointed by the <I>thread</I> argument, and a 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>EAGAIN</B> </DT><DL> <DL> <DT> Not enough system resources to create a process for the new thread, or<BR>more than <B>PTHREAD_THREADS_MAX</B> threads are already active. </DT></DL> </DL> </DL> <H2> <A HREF="#toc5" NAME="sect5">Author</A></H2> <P>Xavier Leroy <Xavier.Leroy@inria.fr> </P> <P>Modified by Ross Johnson for use with <A HREF="http://sources.redhat.com/pthreads-win32">Pthreads-w32</A>.</P> <H2><A HREF="#toc6" NAME="sect6">See Also</A></H2> <P><A HREF="pthread_exit.html"><B>pthread_exit</B>(3)</A> , <A HREF="pthread_join.html"><B>pthread_join</B>(3)</A> , <A HREF="pthread_detach.html"><B>pthread_detach</B>(3)</A> , <A HREF="pthread_attr_init.html"><B>pthread_attr_init</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> </BODY> </HTML>