Name
pthread_attr_setdetachstate, pthread_attr_getdetachstate - set/get detach state attribute in thread attributes objectLibrary
POSIX threads library ( libpthread ", " -lpthread )Synopsis
#include <pthread.h> int pthread_attr_setdetachstate(pthread_attr_t * attr \
", int " detachstate ); int pthread_attr_getdetachstate(const pthread_attr_t * attr ,
int * detachstate );
Description
The pthread_attr_setdetachstate() function sets the detach state attribute of the thread attributes object referred to by attr to the value specified indetachstate
. 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
For an explanation of the terms used in this section, see attributes(7).Interface | Attribute | Value |
T} | Thread safety | MT-Safe |
Standards
POSIX.1-2008.History
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).
Examples
See pthread_attr_init(3).See Also
- pthread_attr_init(3),
- pthread_create(3),
- pthread_detach(3),
- pthread_join(3),
- pthreads(7)