Otherwise the application might push new buffers into the queue while we're flushing, potentially causing the GQueue data structure to become inconsistent and causing crashes soon after. https://bugzilla.gnome.org/show_bug.cgi?id=754597
Otherwise the application might push new buffers into the queue while we're flushing, potentially causing the GQueue data structure to become inconsistent and causing crashes soon after. https://bugzilla.gnome.org/show_bug.cgi?id=754597