K 10 svn:author V 7 dchagin K 8 svn:date V 27 2015-05-24T14:54:12.589090Z K 7 svn:log V 248 pthread_join() caller do futex_wait on child_clear_tid. As a results of multiple simultaneous calls to pthread_join() specifying the same target thread are undefined wake up the one thread. Differential Revision: https://reviews.freebsd.org/D1040 END