From e96120e4b8340e0e77869874a39eb8cf1557a659 Mon Sep 17 00:00:00 2001
From: Rob Austin <rob.austin@boundedbuffer.co.uk>
Date: Tue, 26 Jan 2021 16:13:41 +0000
Subject: [PATCH] https://github.com/OpenHFT/Chronicle-Map/issues/265 added max
 bloat factor

---
 .../openhft/chronicle/map/ChronicleMap.java    | 18 ++++++++++++++++++
 .../chronicle/map/VanillaChronicleMap.java     |  5 +++++
 2 files changed, 23 insertions(+)

diff --git a/src/main/java/net/openhft/chronicle/map/ChronicleMap.java b/src/main/java/net/openhft/chronicle/map/ChronicleMap.java
index 72297d694..b0fb3ec8a 100644
--- a/src/main/java/net/openhft/chronicle/map/ChronicleMap.java
+++ b/src/main/java/net/openhft/chronicle/map/ChronicleMap.java
@@ -237,5 +237,23 @@ public interface ChronicleMap<K, V> extends ConcurrentMap<K, V>,
     default int remainingAutoResizes() {
         throw new UnsupportedOperationException("todo");
     }
+
+
+    /**
+     * The maximum number of times, the chronicle map is allowed to grow in size beyond
+     * the configured number of entries.
+     * <p>
+     * <p>The default maximum bloat factor factor is {@code 1.0} - i. e. "no bloat is expected".
+     * <p>
+     * <p>It is strongly advised not to configure {@code maxBloatFactor} to more than {@code 10.0},
+     * almost certainly, you either should configure {@code ChronicleHash}es completely differently,
+     * or this data store doesn't fit to your case.
+     *
+     * @return maxBloatFactor the maximum number ot times, the chronicle map is alowed to be resized
+     */
+    default double maxBloatFactor() {
+        throw new UnsupportedOperationException("todo");
+    }
+
 }
 
diff --git a/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java b/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
index bcffece96..334a6dc4a 100644
--- a/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
+++ b/src/main/java/net/openhft/chronicle/map/VanillaChronicleMap.java
@@ -280,6 +280,11 @@ public class VanillaChronicleMap<K, V, R>
         return (int) (maxTiers() - tiersUsed());
     }
 
+    @Override
+    public double maxBloatFactor() {
+        return maxBloatFactor;
+    }
+
     @Override
     public short percentageFreeSpace() {
         throwExceptionIfClosed();