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 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 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/.