Provided by: glibc-doc_2.3.6-0ubuntu20_all
pthread_detach - put a running thread in the detached state
int pthread_detach(pthread_t th);
!pthread_detach! put the thread |th| in the detached state. This
guarantees that the memory resources consumed by |th| will be freed
immediately when |th| terminates. However, this prevents other threads
from synchronizing on the termination of |th| using !pthread_join!.
A thread can be created initially in the detached state, using the
!detachstate! attribute to !pthread_create!(3). In contrast,
!pthread_detach! applies to threads created in the joinable state, and
which need to be put in the detached state later.
After !pthread_detach! completes, subsequent attempts to perform
!pthread_join! on |th| will fail. If another thread is already joining
the thread |th| at the time !pthread_detach! is called,
!pthread_detach! does nothing and leaves |th| in the joinable state.
On success, 0 is returned. On error, a non-zero error code is returned.
No thread could be found corresponding to that specified by |th|
the thread |th| is already in the detached state
Xavier Leroy <Xavier.Leroy@inria.fr>