[Ace-users] [ace-users] Odd action when ACE_Event_Handler::handle_timeout returns -1.
Douglas C. Schmidt
schmidt at dre.vanderbilt.edu
Thu Dec 20 08:10:37 CST 2007
Thanks for providing the version info.
>Host: windows xp sp2 / SuSE Linux Enterprise Server 10
>Compiler: VS 2003 / Gcc 3.3.3
>I schedule three timers on ACE_Event_Handler, here I call them
>timer_id1, timer_id2 and timer_id3. In handle_timeout of timer_id1, I
>returns -1, which I think timer_id1 will be canceled and unregistered
>from reactor. But I found that when returns -1, all three timers are
>canceled and unregistered from the reactor. I think this action is
>I only want one timer to be canceled in handle_timeout, how ?
Please see this API:
* Cancel timer.
* Cancel timer associated with @a timer_id that was returned from
* the schedule_timer() method. If arg is non-NULL then it will be
* set to point to the ``magic cookie'' argument passed in when the
* handler was registered. This makes it possible to free up the
* memory and avoid memory leaks. Returns 1 if cancellation
* succeeded and 0 if the @a timer_id wasn't found.
* On successful cancellation, ACE_Event_Handler::handle_close()
* will be called with <ACE_Event_Handler::TIMER_MASK>.
* ACE_Event_Handler::remove_reference() will also be called.
virtual int cancel_timer (long timer_id,
const void **arg = 0,
int dont_call_handle_close = 1);
You'll need to keep track of the timer id in order to cancel a
Dr. Douglas C. Schmidt Professor and Associate Chair
Electrical Engineering and Computer Science TEL: (615) 343-8197
Vanderbilt University WEB: www.dre.vanderbilt.edu/~schmidt
Nashville, TN 37203 NET: d.schmidt at vanderbilt.edu
More information about the Ace-users