pthread_detach

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  auto-
       matically  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.

ATTRIBUTES
       For an  explanation  of  the  terms  used  in  this  section,  see  at-
       tributes(7).

       +-----------------+---------------+---------+
       |Interface        | Attribute     | Value   |
       +-----------------+---------------+---------+
       |pthread_detach() | Thread safety | MT-Safe |
       +-----------------+---------------+---------+

CONFORMING TO
       POSIX.1-2001, POSIX.1-2008.

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_set-
       detachstate(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 any threads
       for which one of these actions has not been done will be 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 5.05 of the Linux  man-pages  project.   A
       description  of  the project, information about reporting bugs, and the
       latest    version    of    this    page,    can     be     found     at
       https://www.kernel.org/doc/man-pages/.

Linux                             2017-09-15                 PTHREAD_DETACH(3)