[iotdb] branch IOTDB-3164 updated: add MemoryController

[marklau99]

This is an automated email from the ASF dual-hosted git repository.

marklau99 pushed a commit to branch IOTDB-3164
in repository https://gitbox.apache.org/repos/asf/iotdb.git


The following commit(s) were added to refs/heads/IOTDB-3164 by this push:
     new b6a2e12a43 add MemoryController
b6a2e12a43 is described below

commit b6a2e12a43c085aefb4e34c2c24b4f4ab8f7304b
Author: Liu Xuxin <liuxu...@outlook.com>
AuthorDate: Thu Jun 30 20:12:01 2022 +0800

    add MemoryController
---
 .../apache/iotdb/db/rescon/MemoryController.java   | 43 ++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git 
a/server/src/main/java/org/apache/iotdb/db/rescon/MemoryController.java 
b/server/src/main/java/org/apache/iotdb/db/rescon/MemoryController.java
new file mode 100644
index 0000000000..098c293381
--- /dev/null
+++ b/server/src/main/java/org/apache/iotdb/db/rescon/MemoryController.java
@@ -0,0 +1,43 @@
+/*
+ * 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 org.apache.iotdb.db.rescon;
+
+import org.apache.iotdb.db.conf.IoTDBConfig;
+import org.apache.iotdb.db.conf.IoTDBDescriptor;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.concurrent.atomic.AtomicLong;
+
+public class MemoryController {
+  private static Logger log = LoggerFactory.getLogger(MemoryController.class);
+  private static final MemoryController INSTANCE = new MemoryController();
+  private IoTDBConfig config = IoTDBDescriptor.getInstance().getConfig();
+  private long memorySizeForWrite = config.getAllocateMemoryForWrite();
+  private long FLUSH_THERSHOLD = (long) (memorySizeForWrite * 
config.getFlushProportion());
+  private double REJECT_THERSHOLD = (long) (memorySizeForWrite * 
config.getRejectProportion());
+  private AtomicLong memoryUsage = new AtomicLong(0);
+
+  private MemoryController() {}
+
+  private MemoryController getInstance() {
+    return INSTANCE;
+  }
+}