unspecified in a multithreaded process; see pthread_sigmask (3). RETURN VALUE sigprocmask () returns ... signal (2), sigpending (2), sigsuspend (2), pthread_sigmask (3), sigqueue (…unspecified in a multithreaded process; see pthread_sigmask (3). RETURN VALUE sigprocmask () returns ... signal (2), sigpending (2), sigsuspend (2), pthread_sigmask (3), sigqueue (…nsec / 1000000); pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ready = poll(&fds, nfds, timeout); pthread_sigmasknsec / 1000000); pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ready = poll(&fds, nfds, timeout); pthread_sigmaskfollowing calls: sigset_t origmask; pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ready = select(nfds, &readfds ... writefds, &exceptfds, timeout); pthread_sigmask(SIG_SETMASK…following calls: sigset_t origmask; pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ready = select(nfds, &readfds ... writefds, &exceptfds, timeout); pthread_sigmask(SIG_SETMASK…following calls: sigset_t origmask; pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ready = select(nfds, &readfds ... writefds, &exceptfds, timeout); pthread_sigmask(SIG_SETMASK…following calls: sigset_t origmask; pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ready = epoll_wait(epfd ... events, maxevents, timeout); pthread_sigmask(SIG_SETMASK, &origma…following calls: sigset_t origmask; pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ready = epoll_wait(epfd ... events, maxevents, timeout); pthread_sigmask(SIG_SETMASK, &origma…following calls: sigset_t origmask; pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ready = epoll_wait(epfd ... events, maxevents, timeout); pthread_sigmask(SIG_SETMASK, &origma…