Re: [PATCH 07/10] qemu: exit thread synchronously in qemuDomainObjStopWorker
On Tue, Jul 14, 2020 at 12:32:58PM +0300, Nikolay Shirokovskiy wrote:
The change won't hurt much current callers performance I guess
and now we can
use the function when we need to be sure of synchronous thread exit as well.
I can't remember the exact scenario, but I'm reasonably sure i tried
this approach when adding the event thread support and hit scenario
where this would deadlock.
Signed-off-by: Nikolay Shirokovskiy <nshirokovskiy(a)virtuozzo.com>
---
src/qemu/qemu_domain.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 2d9d822..18651d0 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -1571,6 +1571,7 @@ qemuDomainObjStopWorker(virDomainObjPtr dom)
qemuDomainObjPrivatePtr priv = dom->privateData;
if (priv->eventThread) {
+ virEventThreadClose(priv->eventThread);
g_object_unref(priv->eventThread);
IIRC, it was something like this unref does not always release the
last reference.
priv->eventThread = NULL;
IOW, despite setting evnetThread to NULL, the thread may linger for
a short while longer in the background until any operations have
completed.
Regards,
Daniel
--
|: https://berrange.com -o- https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org -o- https://fstop138.berrange.com :|
|: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|