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-rw-r--r--src/server/Engine.hpp7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/server/Engine.hpp b/src/server/Engine.hpp
index f5ba1feb..1f8cbce1 100644
--- a/src/server/Engine.hpp
+++ b/src/server/Engine.hpp
@@ -58,10 +58,15 @@ class PostProcessor;
class PreProcessor;
class RunContext;
class SocketListener;
-class Task;
class UndoStack;
class Worker;
+struct SingleTask;
+struct SeqTask;
+struct ParTask;
+
+using Task = boost::variant<SingleTask, SeqTask, ParTask>;
+
/**
The engine which executes the process graph.