1 files changed, 6 insertions, 0 deletions
diff --git a/vespajlib/src/main/java/com/yahoo/lang/MutableBoolean.java b/vespajlib/src/main/java/com/yahoo/lang/MutableBoolean.java
index 17501b17bd0..877620547ba 100644
--- a/vespajlib/src/main/java/com/yahoo/lang/MutableBoolean.java
+++ b/vespajlib/src/main/java/com/yahoo/lang/MutableBoolean.java
@@ -22,6 +22,12 @@ public class MutableBoolean {
 
     public void orSet(boolean value) { this.value |= value; }
 
+    public boolean getAndSet(boolean newValue) {
+        boolean prev = value;
+        value = newValue;
+        return prev;
+    }
+
     @Override
     public String toString() { return Boolean.toString(value); }