Added the flush command.

Instead of trying to actually flush queues, we send a special command
through the same queues as the other commands and can thus guarantee
that the respective commands have been processed without blocking
anything.

1 files changed, 6 insertions, 0 deletions

diff --git a/common/query.h b/common/query.h
index 0bc5141..2adb7e9 100644
--- a/common/query.h
+++ b/common/query.h
@@ -465,6 +465,12 @@ class SyncScope : public QueryBase {
 public:
     using QueryBase::QueryBase;
 
+    SyncScope(const QueryBase &other)
+        : QueryBase(other)
+    {
+
+    }
+
     Query::Filter getResourceFilter() const
     {
         return mResourceFilter;