1 files changed, 13 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/CancellationToken.java b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/CancellationToken.java
new file mode 100644
index 00000000..a2ae41e3
--- /dev/null
+++ b/subprojects/viatra-runtime/src/main/java/tools/refinery/viatra/runtime/CancellationToken.java
@@ -0,0 +1,13 @@
+/*
+ * SPDX-FileCopyrightText: 2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package tools.refinery.viatra.runtime;
+
+@FunctionalInterface
+public interface CancellationToken {
+        CancellationToken NONE = () -> {};
+
+        void checkCancelled();
+}