pthread_detach(3) — Linux manual page


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

NAME         top

       pthread_detach - detach a thread

SYNOPSIS         top

       #include <pthread.h>

       int pthread_detach(pthread_t thread);

       Compile and link with -pthread.

DESCRIPTION         top

       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         top

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

ERRORS         top

       EINVAL thread is not a joinable thread.

       ESRCH  No thread with the ID thread could be found.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see

       │Interface        Attribute     Value   │
       │pthread_detach() │ Thread safety │ MT-Safe │

CONFORMING TO         top

       POSIX.1-2001, POSIX.1-2008.

NOTES         top

       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.)

EXAMPLES         top

       The following statement detaches the calling thread:


SEE ALSO         top

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

COLOPHON         top

       This page is part of release 5.08 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

Linux                            2020-06-09                PTHREAD_DETACH(3)

Pages that refer to this page: pthread_attr_getdetachstate(3)pthread_attr_setdetachstate(3)pthread_create(3)pthread_join(3)pthreads(7)