SPI implementation

src/main/java/net/openhft/chronicle/hash/impl/LocalLockState.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2015 Higher Frequency Trading
+ *
+ *  http://www.higherfrequencytrading.com
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package net.openhft.chronicle.hash.impl;
+
+public enum LocalLockState {
+    UNLOCKED(false, false, false),
+    READ_LOCKED(true, false, false),
+    UPDATE_LOCKED(true, true, false),
+    WRITE_LOCKED(true, true, true);
+
+    public final boolean read;
+    public final boolean update;
+    public final boolean write;
+
+    LocalLockState(boolean read, boolean update, boolean write) {
+        this.read = read;
+        this.update = update;
+        this.write = write;
+    }
+}