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  termi-
       nates.)

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 3.25 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)