members of a specified process group. pthread_kill (3) Sends a signal to a specified ... system call used to implement pthread_kill (3).) sigqueue (3) Sends a real-time signalexit (3), pthread_key_create (3), pthread_kill (3), pthread_mutex_lock (3), pthread_mutexthese two signals. • The sigaction (2), pthread_kill (3), and pthread_sigqueue (3) interfaces failposix_trace_event (3) pselect (2) pthread_kill (3) Added in POSIX.1-2008 TC1 pthread_self