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
       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.

ATTRIBUTES
       For an explanation of the terms used in this section, see
       attributes(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_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 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 5.04 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)