NAME

pthread_attr_getdetachstate, pthread_attr_setdetachstate - get and set the detachstate attribute

SYNOPSIS

[THR] #include <pthread.h>

int pthread_attr_getdetachstate(const pthread_attr_t *attr,
       int *detachstate);
int pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate);

DESCRIPTION

The detachstate attribute controls whether the thread is created in a detached state. If the thread is created detached, then use of the ID of the newly created thread by the pthread_detach() or pthread_join() function is an error.

The pthread_attr_getdetachstate() and pthread_attr_setdetachstate() functions, respectively, shall get and set the detachstate attribute in the attr object.

For pthread_attr_getdetachstate(), detachstate shall be set to either PTHREAD_CREATE_DETACHED or PTHREAD_CREATE_JOINABLE.

For pthread_attr_setdetachstate(), the application shall set detachstate to either PTHREAD_CREATE_DETACHED or PTHREAD_CREATE_JOINABLE.

A value of PTHREAD_CREATE_DETACHED shall cause all threads created with attr to be in the detached state, whereas using a value of PTHREAD_CREATE_JOINABLE shall cause all threads created with attr to be in the joinable state. The default value of the detachstate attribute shall be PTHREAD_CREATE_JOINABLE.

RETURN VALUE

Upon successful completion, pthread_attr_getdetachstate() and pthread_attr_setdetachstate() shall return a value of 0; otherwise, an error number shall be returned to indicate the error.

The pthread_attr_getdetachstate() function stores the value of the detachstate attribute in detachstate if successful.

ERRORS

The pthread_attr_setdetachstate() function shall fail if:

[EINVAL]

The value of detachstate was not valid

These functions shall not return an error code of [EINTR].

EXAMPLES

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SEE ALSO

pthread_attr_destroy() , pthread_attr_getstackaddr() , pthread_attr_getstacksize() , pthread_create() , the Base Definitions volume of IEEE Std 1003.1-2001, <pthread.h>

CHANGE HISTORY

First released in Issue 5. Included for alignment with the POSIX Threads Extension.

Issue 6

The pthread_attr_setdetachstate() and pthread_attr_getdetachstate() functions are marked as part of the Threads option.

The DESCRIPTION is updated to avoid use of the term "must" for application requirements.