Class sigaction

tensorflow/core/platform/posix/subprocess.cc:355–355

  // registered a SIGPIPE handler, then let it deal with any signals generated
  // by the premature death of the child process, don't overwrite its handler.
  struct sigaction act;
  if (sigaction(SIGPIPE, nullptr, &act) < 0) {
    LOG(ERROR) << "Communicate cannot get SIGPIPE handler: " << strerror(errno);
    return 1;