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Ignore events for closed DCBs

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If a closed DCB receives an event, it is ignored.
This commit is contained in:
Markus Mäkelä 2018-02-06 11:49:14 +02:00
parent 4089b6b6fd
commit 6f6c11e6a3
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GPG Key ID: 72D48FCE664F7B19
1 changed files with 16 additions and 1 deletions
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17
server/core/dcb.cc
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@ -3204,9 +3204,24 @@ static uint32_t dcb_handler(DCB* dcb, uint32_t events)
static uint32_t dcb_poll_handler(MXS_POLL_DATA *data, int thread_id, uint32_t events)
{
uint32_t rval = 0;
DCB *dcb = (DCB*)data;
return dcb_handler(dcb, events);
/**
* Fake hangup events (e.g. from monitors) can cause a DCB to be closed
* before the real events are processed. This makes it look like a closed
* DCB is receiving events when in reality the events were received at the
* same time the DCB was closed. If a closed DCB receives events they should
* be ignored.
*
* @see FakeEventTask()
*/
if (dcb->n_close == 0)
{
rval = dcb_handler(dcb, events);
}
return rval;
}
static bool dcb_is_still_valid(DCB* target, int id)