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PTHREAD_DETACH(3) Linux Programmer's Manual PTHREAD_DETACH(3)
pthread_detach - detach a thread
#include <pthread.h>
int pthread_detach(pthread_t thread);
Compile and link with -pthread.
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.
On success, pthread_detach() returns 0; on error, it returns an error
number.
EINVAL thread is not a joinable thread.
ESRCH No thread with the ID thread could be found.
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├─────────────────┼───────────────┼─────────┤
│pthread_detach() │ Thread safety │ MT-Safe │
└─────────────────┴───────────────┴─────────┘
POSIX.1-2001, POSIX.1-2008.
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.)
The following statement detaches the calling thread:
pthread_detach(pthread_self());
pthread_attr_setdetachstate(3), pthread_cancel(3), pthread_create(3),
pthread_exit(3), pthread_join(3), pthreads(7)
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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)
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