Optimize memory in non-persisted case -- don't zero out all memory eagery; remove global mutable state duplication code in VanillaChronicleHash and ReplicatedChronicleMap; make sleep interruptible in OldEntriesCleanup thread; remove old entries cleanup duplicatation tracking; fix bugs

src/main/java/net/openhft/chronicle/hash/VanillaGlobalMutableState.java

@@ -0,0 +1,38 @@
+/*
+ *      Copyright (C) 2015  higherfrequencytrading.com
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU Lesser General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU Lesser General Public License for more details.
+ *
+ *      You should have received a copy of the GNU Lesser General Public License
+ *      along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.openhft.chronicle.hash;
+
+import net.openhft.lang.model.Byteable;
+
+/**
+ * <h1>This interface is a private API, don't use in client code</h1>
+ *
+ * Excluding global mutable state lock
+ */
+public interface VanillaGlobalMutableState extends Byteable {
+
+    long getAllocatedExtraTierBulks();
+
+    void setAllocatedExtraTierBulks(long allocatedExtraTierBulks);
+
+    long getFirstFreeTierIndex();
+
+    void setFirstFreeTierIndex(long firstFreeTierIndex);
+
+    long getExtraTiersInUse();
+    void setExtraTiersInUse(long extraTiersInUse);
+}