PTHREAD_ATTR_SETDETACHSTATELinux Programmer's MaPTHREAD_ATTR_SETDETACHSTATE(3)
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 *attr, int detachstate); int pthread_attr_getdetachstate(pthread_attr_t *attr, int *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 join‐able state.
The default setting of the detach state attribute in a newly initialized thread attributes object is PTHREAD_CREATE_JOINABLE.
默认为合并的模式，而分分离模式，若新建一个线程没有指定线程分离属性，默认就是合并的。
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.
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 This page is part of release 3.35 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://man7.org/linux/man-pages/.
Linux 2010-02-03 PTHREAD_ATTR_SETDETACHSTATE(3)