From b167ec59eb6b53b8e0952349e074b35a760ec25d Mon Sep 17 00:00:00 2001
From: Peter Lawrey <peter.lawrey@higherfrequencytrading.com>
Date: Tue, 16 Jun 2020 06:23:34 +0100
Subject: [PATCH] Add `throwExceptionIfClosed();` to most public methods for
 classes implementing Closeable,
 https://github.com/OpenHFT/Chronicle-Core/issues/116

---
 src/main/java/net/openhft/chronicle/map/MapClosable.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/net/openhft/chronicle/map/MapClosable.java b/src/main/java/net/openhft/chronicle/map/MapClosable.java
index dfc5dc9c0..d775ea379 100644
--- a/src/main/java/net/openhft/chronicle/map/MapClosable.java
+++ b/src/main/java/net/openhft/chronicle/map/MapClosable.java
@@ -6,6 +6,7 @@ public interface MapClosable extends Closeable {
 
     @Override
     default boolean isClosed() {
-        throw new UnsupportedOperationException();
+        // if we don't know, pretend it is not.
+        return false;
     }
 }