Instead of overloading qmp_dispatcher_co_busy, make the coroutine
pointer NULL. This will make things break spectacularly if somebody
tries to start a request after monitor_cleanup().
AIO_WAIT_WHILE_UNLOCKED() does not need qatomic_mb_read(), because
the macro contains all the necessary memory barriers.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
AIO_WAIT_WHILE_UNLOCKED(NULL,
(aio_poll(iohandler_get_aio_context(), false),
- qatomic_mb_read(&qmp_dispatcher_co_busy)));
+ qatomic_read(&qmp_dispatcher_co)));
/*
* We need to explicitly stop the I/O thread (but not destroy it),
/* On shutdown, don't take any more requests from the queue */
if (qmp_dispatcher_co_shutdown) {
+ qatomic_set(&qmp_dispatcher_co, NULL);
return;
}
* yielded and were reentered from monitor_cleanup()
*/
if (qmp_dispatcher_co_shutdown) {
+ qatomic_set(&qmp_dispatcher_co, NULL);
return;
}
}