Class sigaction

oneflow/api/python/utils/dataloader.cpp:59–59

// http://man7.org/linux/man-pages/man2/signal.2.html
static inline void setSignalHandler(int signal, void (*handler)(int, siginfo_t*, void*),
                                    struct sigaction* old_sa_ptr) {
  struct sigaction sa {};
  sa.sa_sigaction = handler;
  sa.sa_flags = SA_RESTART | SA_SIGINFO | SA_NOCLDSTOP | SA_NODEFER;