src/third_party/linux-syscall-support/tests/sigtimedwait.c

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#include "test_skel.h"

int main(int argc, char *argv[]) {

  struct kernel_sigset_t sigset = {};
  siginfo_t siginfo = {};
  struct timespec timeout = {};

  // Invalid timeouts.
  timeout.tv_sec = -1;
  assert(sys_sigtimedwait(&sigset, &siginfo, &timeout) == -1);
  assert(errno == EINVAL);

  // Expired timeouts.
  timeout.tv_sec = 0;
  assert(sys_sigtimedwait(&sigset, &siginfo, &timeout) == -1);
  assert(errno == EAGAIN);

  // Success.
  const int kTestSignal = SIGCONT;
  assert(sys_sigemptyset(&sigset) == 0);
  assert(sys_sigaddset(&sigset, kTestSignal) == 0);
  assert(sys_sigprocmask(SIG_BLOCK, &sigset, NULL) == 0);
  assert(raise(kTestSignal) == 0);
  assert(sys_sigtimedwait(&sigset, &siginfo, &timeout) == kTestSignal);
  assert(siginfo.si_signo == kTestSignal);

  return 0;
}