Function PthreadSetSigmask

core/utils/syscallthread.cc:86–90

pthread_sigmask shouldn't return EINTR, but we can check.

// pthread_sigmask shouldn't return EINTR, but we can check.
static inline void PthreadSetSigmask(const sigset_t *mask) {
  while (pthread_sigmask(SIG_SETMASK, mask, nullptr) < 0 && errno == EINTR) {
    continue;
  }
}

/*
 * Run a thread that (among whatever else it does) makes system calls,