[GitHub] [incubator-hugegraph-computer] corgiboygsj commented on a diff in pull request #177: feature: support partition concurrent compute

[GitBox <gi...@apache.org>]

corgiboygsj commented on code in PR #177:
URL: https://github.com/apache/incubator-hugegraph-computer/pull/177#discussion_r857418405


##########
computer-core/src/main/java/com/baidu/hugegraph/computer/core/sender/MessageSendPartition.java:
##########
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2017 HugeGraph Authors
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with this
+ * work for additional information regarding copyright ownership. The ASF
+ * 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 com.baidu.hugegraph.computer.core.sender;
+
+import java.util.Collection;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import com.baidu.hugegraph.computer.core.common.ComputerContext;
+import com.baidu.hugegraph.computer.core.receiver.MessageStat;
+
+public class MessageSendPartition {
+
+    private final ComputerContext context;
+    private final int threshold;
+    private final int capacity;
+
+    private final Map<Thread, WriteBuffers> buffers;
+
+    public MessageSendPartition(ComputerContext context,
+                                int threshold, int capacity) {
+        this.context = context;
+        this.threshold = threshold;
+        this.capacity = capacity;
+
+        this.buffers = new ConcurrentHashMap<>();
+    }
+
+    public WriteBuffers get() {
+        Thread current = Thread.currentThread();
+        WriteBuffers buffer = this.buffers.get(current);
+        if (buffer == null) {
+            buffer = new WriteBuffers(this.context, this.threshold,
+                                      this.capacity);
+            this.buffers.put(current, buffer);
+        }
+        return buffer;
+    }
+
+    public void clear() {
+        this.buffers.clear();
+    }
+
+    public void resetMessageWritten() {
+        for (WriteBuffers buffer : this.buffers.values()) {
+            buffer.resetMessageWritten();
+        }
+    }
+
+    public MessageStat messageWritten() {

Review Comment:
   can do this, but they are only accessed by the main thread



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