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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

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