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Fix race condition in kqueue event system implementation #2193

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merged 4 commits into from Aug 26, 2017
Merged

Fix race condition in kqueue event system implementation #2193

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b547c9b
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SeanTAllen Aug 25, 2017
4102921
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SeanTAllen Aug 26, 2017
6f842f7
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SeanTAllen Aug 26, 2017
7380b1e
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SeanTAllen Aug 26, 2017
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33 changes: 24 additions & 9 deletions src/libponyrt/asio/kqueue.c
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Expand Up @@ -161,28 +161,43 @@ DECLARE_THREAD_FN(ponyint_asio_backend_dispatch)
switch(ep->filter)
{
case EVFILT_READ:
ev->readable = true;
pony_asio_event_send(ev, ASIO_READ, 0);
if(ev->flags & ASIO_READ)
{
ev->readable = true;
pony_asio_event_send(ev, ASIO_READ, 0);
}
break;

case EVFILT_WRITE:
if(ep->flags & EV_EOF)
{
ev->readable = true;
ev->writeable = true;
pony_asio_event_send(ev, ASIO_READ | ASIO_WRITE, 0);
if(ev->flags & (ASIO_READ | ASIO_WRITE))
{
ev->readable = true;
ev->writeable = true;
pony_asio_event_send(ev, ASIO_READ | ASIO_WRITE, 0);
}
} else {
ev->writeable = true;
pony_asio_event_send(ev, ASIO_WRITE, 0);
if(ev->flags & ASIO_WRITE)
{
ev->writeable = true;
pony_asio_event_send(ev, ASIO_WRITE, 0);
}
}
break;

case EVFILT_TIMER:
pony_asio_event_send(ev, ASIO_TIMER, 0);
if(ev->flags & ASIO_TIMER)
{
pony_asio_event_send(ev, ASIO_TIMER, 0);
}
break;

case EVFILT_SIGNAL:
pony_asio_event_send(ev, ASIO_SIGNAL, (uint32_t)ep->data);
if(ev->flags & ASIO_SIGNAL)
{
pony_asio_event_send(ev, ASIO_SIGNAL, (uint32_t)ep->data);
}
break;

default: {}
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