pthread_create(3) [osx man page]

PTHREAD_CREATE(3)					   BSD Library Functions Manual 					 PTHREAD_CREATE(3)

NAME

     pthread_create -- create a new thread

SYNOPSIS

     #include <pthread.h>

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

DESCRIPTION

     The pthread_create() function is used to create a new thread, with attributes specified by attr, within a process.  If attr is NULL, the
     default attributes are used.  If the attributes specified by attr are modified later, the thread's attributes are not affected.  Upon suc-
     cessful completion, pthread_create() will store the ID of the created thread in the location specified by thread.

     Upon its creation, the thread executes start_routine, with arg as its sole argument.  If start_routine returns, the effect is as if there was
     an implicit call to pthread_exit(), using the return value of start_routine as the exit status.  Note that the thread in which main() was
     originally invoked differs from this.  When it returns from main(), the effect is as if there was an implicit call to exit(), using the
     return value of main() as the exit status.

     Upon thread exit the storage for the thread must be reclaimed by another thread via a call to pthread_join().  Alternatively,
     pthread_detach() may be called on the thread to indicate that the system may automatically reclaim the thread storage upon exit.  The
     pthread_attr_setdetachstate() function may be used on the attr argument passed to pthread_create() in order to achieve the same effect as a
     call to pthread_detach() on the newly created thread.

     The signal state of the new thread is initialized as:

	   o   The signal mask is inherited from the creating thread.

	   o   The set of signals pending for the new thread is empty.

RETURN VALUES

     If successful,  the pthread_create() function will return zero.  Otherwise, an error number will be returned to indicate the error.

ERRORS

     pthread_create() will fail if:

     [EAGAIN]		The system lacked the necessary resources to create another thread, or the system-imposed limit on the total number of
			threads in a process [PTHREAD_THREADS_MAX] would be exceeded.

     [EINVAL]		The value specified by attr is invalid.

SEE ALSO

     fork(2), pthread_cleanup_pop(3), pthread_cleanup_push(3), pthread_detach(3), pthread_exit(3), pthread_join(3)

STANDARDS

     pthread_create() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').

BSD
								   April 4, 1996							       BSD

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PTHREAD_DETACH(3)					     Linux Programmer's Manual						 PTHREAD_DETACH(3)

NAME

       pthread_detach - detach a thread

SYNOPSIS

       #include <pthread.h>

       int pthread_detach(pthread_t thread);

       Compile and link with -pthread.

DESCRIPTION

       The  pthread_detach()  function	marks  the  thread identified by thread as detached.  When a detached thread terminates, its resources are
       automatically released back to the system without the need for another thread to join with the terminated thread.

       Attempting to detach an already detached thread results in unspecified behavior.

RETURN VALUE

       On success, pthread_detach() returns 0; on error, it returns an error number.

ERRORS

       EINVAL thread is not a joinable thread.

       ESRCH  No thread with the ID thread could be found.

CONFORMING TO

       POSIX.1-2001.

NOTES

       Once a thread has been detached, it can't be joined with pthread_join(3) or be made joinable again.

       A new thread can be created in a detached state using pthread_attr_setdetachstate(3) to set the detached attribute of the attr argument	of
       pthread_create(3).

       The  detached  attribute merely determines the behavior of the system when the thread terminates; it does not prevent the thread from being
       terminated if the process terminates using exit(3) (or equivalently, if the main thread returns).

       Either pthread_join(3) or pthread_detach() should be called for each thread that an application creates, so that system resources  for  the
       thread can be released.	(But note that the resources of all threads are freed when the process terminates.)

EXAMPLE

       The following statement detaches the calling thread:

	   pthread_detach(pthread_self());

SEE ALSO

       pthread_attr_setdetachstate(3), pthread_cancel(3), pthread_create(3), pthread_exit(3), pthread_join(3), pthreads(7)

COLOPHON

       This  page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2008-11-27							 PTHREAD_DETACH(3)

Linux and UNIX Man Pages

pthread_create(3) [osx man page]

Check Out this Related Man Page