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Name

pthread_attr_setdetachstate, pthread_attr_getdetachstate - set/get detach state attribute in thread attributes object

Synopsis


#include <pthread.h>int pthread_attr_setdetachstate(pthread_attr_t *attrint
" detachstate );
int pthread_attr_getdetachstate(const pthread_attr_t *attrint *" detachstate
);

Compile and link with -pthread.

Description

The pthread_attr_setdetachstate() function sets the detach state attribute of the thread attributes object referred to by attr to the value specified in detachstate. The detach state attribute determines whether a thread created using the thread attributes object attr will be created in a joinable or a detached state.

The following values may be specified in detachstate:

PTHREAD_CREATE_DETACHED
Threads that are created using attr will be created in a detached state.
PTHREAD_CREATE_JOINABLE
Threads that are created using attr will be created in a joinable state.

The default setting of the detach state attribute in a newly initialized thread attributes object is PTHREAD_CREATE_JOINABLE.

The pthread_attr_getdetachstate() returns the detach state attribute of the thread attributes object attr in the buffer pointed to by detachstate.

Return Value

On success, these functions return 0; on error, they return a nonzero error number.

Errors

pthread_attr_setdetachstate() can fail with the following error:
EINVAL
An invalid value was specified in detachstate.

Attributes

Multithreading (see pthreads(7) )

The pthread_attr_setdetachstate() and pthread_attr_getdetachstate() functions are thread-safe.

Conforming to

POSIX.1-2001.

Notes

See pthread_create(3) for more details on detached and joinable threads.

A thread that is created in a joinable state should eventually either be joined using pthread_join(3) or detached using pthread_detach(3) ; see pthread_create(3) .

It is an error to specify the thread ID of a thread that was created in a detached state in a later call to pthread_detach(3) or pthread_join(3) .

Example

See pthread_attr_init(3) .

See Also

pthread_attr_init(3) , pthread_create(3) , pthread_detach(3) , pthread_join(3) , pthreads(7)

Colophon

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