Function thread_main

test/pthread/test_pthread_reltime.cpp:25–37

static bool pong_requested = false;

void *thread_main(void *arg) {
  std::cout << "running thread ..." << std::endl;

  std::unique_lock<std::mutex> lock(mutex);
  while (!pong_requested)
    cond_var.wait(lock);
  pong = now(); // Measure time in the pthread
  std::cout << "pong - ping: " << (pong - ping) << std::endl;
  pong_requested = false;
  cond_var.notify_one();

  return NULL;
}

EMSCRIPTEN_KEEPALIVE
extern "C" int notify() {