add forkjoin TP

modules/elasticsearch/src/main/java/org/elasticsearch/threadpool/forkjoin/ForkJoinThreadPool.java

@@ -0,0 +1,93 @@
+/*
+ * Licensed to Elastic Search and Shay Banon under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. Elastic Search licenses this
+ * file to you 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 org.elasticsearch.threadpool.forkjoin;
+
+import org.elasticsearch.common.inject.Inject;
+import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.common.unit.TimeValue;
+import org.elasticsearch.common.util.concurrent.EsExecutors;
+import org.elasticsearch.common.util.concurrent.jsr166y.ForkJoinPool;
+import org.elasticsearch.threadpool.support.AbstractThreadPool;
+
+import java.util.concurrent.Executors;
+import java.util.concurrent.ThreadPoolExecutor;
+
+import static org.elasticsearch.common.settings.ImmutableSettings.Builder.*;
+import static org.elasticsearch.common.unit.TimeValue.*;
+
+/**
+ *
+ */
+public class ForkjoinThreadPool extends AbstractThreadPool {
+
+    final int parallelism;
+    final TimeValue keepAlive;
+
+    final int scheduledSize;
+
+    public ForkjoinThreadPool() {
+        this(EMPTY_SETTINGS);
+    }
+
+    @Inject public ForkjoinThreadPool(Settings settings) {
+        super(settings);
+        this.parallelism = componentSettings.getAsInt("parallelism", Runtime.getRuntime().availableProcessors() * 5);
+        this.keepAlive = componentSettings.getAsTime("keep_alive", timeValueMinutes(5));
+        this.scheduledSize = componentSettings.getAsInt("scheduled_size", 1);
+        logger.debug("Initializing {} thread pool with parallelism[{}], keep_alive[{}], scheduled_size[{}]", getType(), parallelism, keepAlive, scheduledSize);
+        scheduledExecutorService = Executors.newScheduledThreadPool(scheduledSize, EsExecutors.daemonThreadFactory(settings, "[sc]"));
+//        executorService = TransferThreadPoolExecutor.newScalingExecutor(min, max, keepAlive.nanos(), TimeUnit.NANOSECONDS, EsExecutors.daemonThreadFactory(settings, "[tp]"));
+        executorService = new ForkJoinPool(parallelism, ForkJoinPool.defaultForkJoinWorkerThreadFactory, null, true);
+        cached = EsExecutors.newCachedThreadPool(keepAlive, EsExecutors.daemonThreadFactory(settings, "[cached]"));
+        started = true;
+    }
+
+    @Override public int getMinThreads() {
+        return parallelism;
+    }
+
+    @Override public int getMaxThreads() {
+        return parallelism;
+    }
+
+    @Override public int getSchedulerThreads() {
+        return scheduledSize;
+    }
+
+    @Override public int getPoolSize() {
+        return -1;
+    }
+
+    @Override public int getActiveCount() {
+        return -1;
+    }
+
+    @Override public int getSchedulerPoolSize() {
+        return ((ThreadPoolExecutor) scheduledExecutorService).getPoolSize();
+    }
+
+    @Override public int getSchedulerActiveCount() {
+        return ((ThreadPoolExecutor) scheduledExecutorService).getActiveCount();
+    }
+
+    @Override public String getType() {
+        return "forkjoin";
+    }
+}