ACE_Reactor owner() + run_reactor_event_loop()

ACE_Reactor::instance()->run_reactor_event_loop() 放在主线程中，定时器就正常；放在子线程中，定时器就不起作用。

解决方法：

set the owner of the reactor to the identity of the thread that runs the event loop

int svc()
{
    int nRet = 0;
    /* select_reactor 可能在阻塞过程中被信号中断（errno=4） */
    while(ACE_Reactor::instance()->reactor_event_loop_done() == 0)
    {
        ACE_Reactor::instance()->owner( ACE_OS::thr_self() );
        nRet = ACE_Reactor::instance()->run_reactor_event_loop();
        if(nRet >= 0)
            break;
    }
}