redhat man page for pthread_create

PTHREAD_CREATE(3)					     Library Functions Manual						 PTHREAD_CREATE(3)

NAME
       pthread_create - create a new thread

SYNOPSIS
       #include <pthread.h>

       int pthread_create(pthread_t * thread, pthread_attr_t * attr, void * (*start_routine)(void *), void * arg);

DESCRIPTION
       pthread_create  creates	a  new	thread	of control that executes concurrently with the calling thread. The new thread applies the function
       start_routine passing it arg as first argument. The new thread terminates either explicitly, by calling pthread_exit(3), or implicitly,	by
       returning  from the start_routine function. The latter case is equivalent to calling pthread_exit(3) with the result returned by start_rou-
       tine as exit code.

       The attr argument specifies thread attributes to be applied to the new thread. See pthread_attr_init(3)	for  a	complete  list	of  thread
       attributes.  The  attr  argument can also be NULL, in which case default attributes are used: the created thread is joinable (not detached)
       and has default (non real-time) scheduling policy.

RETURN VALUE
       On success, the identifier of the newly created thread is stored in the location pointed by the thread argument, and a 0  is  returned.	On
       error, a non-zero error code is returned.

ERRORS
       EAGAIN not enough system resources to create a process for the new thread.

       EAGAIN more than PTHREAD_THREADS_MAX threads are already active.

AUTHOR
       Xavier Leroy <Xavier.Leroy@inria.fr>

SEE ALSO
       pthread_exit(3), pthread_join(3), pthread_detach(3), pthread_attr_init(3).

								   LinuxThreads 						 PTHREAD_CREATE(3)