Function slow_child_work

tests/system_test/wait_test.cpp:161–174

* @brief 测试非阻塞 wait (WNOHANG) */

 * @brief 测试非阻塞 wait (WNOHANG)
 */
void slow_child_work(void* arg) {
  uint64_t child_id = reinterpret_cast<uint64_t>(arg);

  klog::Info("SlowChild {}: starting", child_id);

  // 执行较长时间的工作
  for (int i = 0; i < 10; ++i) {
    klog::Debug("SlowChild {}: working, iter={}", child_id, i);
    (void)sys_sleep(100);
  }

  klog::Info("SlowChild {}: exiting", child_id);
  sys_exit(0);
}

void test_wait_no_hang(void* /*arg*/) {
  klog::Info("=== Wait NoHang Test ===");