pthread_attr_setcreatesuspend_np(3) on FreeBSD
The text e03921e3be3e, as FreeBSD 6.3-RELEASE, FreeBSD 6.2-RELEASE, FreeBSD 6.1-RELEASE, FreeBSD 6.0-RELEASE, FreeBSD 5.5-RELEASE, FreeBSD 5.4-RELEASE, FreeBSD 5.3-RELEASE shipped it.
prepare attribute for creation of suspended thread