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Man page of PTHREAD_DETACH
PTHREAD_DETACH
Section: Linux Programmer's Manual (3)
Updated: 2015-07-23
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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.
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 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 4.09 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/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- ATTRIBUTES
-
- CONFORMING TO
-
- NOTES
-
- EXAMPLE
-
- SEE ALSO
-
- COLOPHON
-
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