The repeated calls to WaitForMultipleObjects may cause a livelock in aio_poll,
where no progress is made on bottom halves. This patch matches the behavior
of the POSIX code.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
}
/* wait until next event */
- for (;;) {
+ while (count > 0) {
int timeout = blocking ? INFINITE : 0;
int ret = WaitForMultipleObjects(count, events, FALSE, timeout);
g_free(tmp);
}
}
+
+ /* Try again, but only call each handler once. */
+ events[ret - WAIT_OBJECT_0] = events[--count];
}
return progress;