diff -r 2e46025d87c6 src/jdk.jfr/share/classes/jdk/jfr/events/AbstractBufferStatisticsEvent.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jfr/share/classes/jdk/jfr/events/AbstractBufferStatisticsEvent.java	Wed Apr 01 00:10:22 2020 +0800
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.jfr.events;
+
+import jdk.internal.misc.VM.BufferPool;
+
+import jdk.jfr.*;
+import jdk.jfr.internal.Type;
+
+@Category({ "Java Application", "Statistics" })
+public abstract class AbstractBufferStatisticsEvent extends AbstractJDKEvent {
+
+    AbstractBufferStatisticsEvent() {
+        BufferPool bufferPool = getBufferPool();
+
+        count = bufferPool.getCount();
+        totalCapacity = bufferPool.getTotalCapacity();
+        memoryUsed = bufferPool.getMemoryUsed();
+    }
+
+    @Label("Count")
+    public long count;
+
+    @Label("Total Capacity")
+    @DataAmount
+    public long totalCapacity;
+
+    @Label("Memory Used")
+    @DataAmount
+    public long memoryUsed;
+
+    abstract BufferPool getBufferPool();
+}
diff -r 2e46025d87c6 src/jdk.jfr/share/classes/jdk/jfr/events/DirectBufferStatisticsEvent.java
--- a/src/jdk.jfr/share/classes/jdk/jfr/events/DirectBufferStatisticsEvent.java	Thu Mar 05 10:30:46 2020 +0800
+++ b/src/jdk.jfr/share/classes/jdk/jfr/events/DirectBufferStatisticsEvent.java	Wed Apr 01 00:10:22 2020 +0800
@@ -25,28 +25,31 @@
 
 package jdk.jfr.events;
 
+import jdk.internal.misc.VM;
+import jdk.internal.misc.VM.BufferPool;
+
 import jdk.jfr.*;
 import jdk.jfr.internal.Type;
 
 @Name(Type.EVENT_NAME_PREFIX + "DirectBufferStatistics")
 @Label("Direct Buffer Statistics")
-@Category({ "Java Application", "Statistics" })
 @Description("Statistics of direct buffer")
-public final class DirectBufferStatisticsEvent extends AbstractJDKEvent {
-
-    @Label("Count")
-    public long count;
+public final class DirectBufferStatisticsEvent extends AbstractBufferStatisticsEvent {
 
-    @Label("Total Capacity")
-    @DataAmount
-    public long totalCapacity;
+    private static final BufferPool DIRECT_BUFFER_POOL = VM.getBufferPools().stream()
+                                                           .filter(p -> "direct".equals(p.getName()))
+                                                           .findFirst().get();
 
-    @Label("Memory Used")
-    @DataAmount
-    public long memoryUsed;
+    public DirectBufferStatisticsEvent() {
+        this.maxCapacity = VM.maxDirectMemory();
+    }
 
     @Label("Maximum Capacity")
     @Description("Maximum direct buffer capacity the process can use")
     @DataAmount
     public long maxCapacity;
+
+    BufferPool getBufferPool() {
+        return DIRECT_BUFFER_POOL;
+    }
 }
diff -r 2e46025d87c6 src/jdk.jfr/share/classes/jdk/jfr/internal/instrument/JDKEvents.java
--- a/src/jdk.jfr/share/classes/jdk/jfr/internal/instrument/JDKEvents.java	Thu Mar 05 10:30:46 2020 +0800
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/instrument/JDKEvents.java	Wed Apr 01 00:10:22 2020 +0800
@@ -28,9 +28,6 @@
 import java.util.ArrayList;
 import java.util.List;
 
-import jdk.internal.misc.VM;
-import jdk.internal.misc.VM.BufferPool;
-
 import jdk.jfr.Event;
 import jdk.jfr.events.ActiveRecordingEvent;
 import jdk.jfr.events.ActiveSettingEvent;
@@ -170,16 +167,8 @@
         RequestEngine.removeHook(emitDirectBufferStatistics);
     }
 
-    private static final BufferPool DIRECT_BUFFER_POOL = VM.getBufferPools().stream()
-                                                           .filter(p -> "direct".equals(p.getName()))
-                                                           .findFirst().get();
-
     private static void emitDirectBufferStatistics() {
         DirectBufferStatisticsEvent e = new DirectBufferStatisticsEvent();
-        e.count = DIRECT_BUFFER_POOL.getCount();
-        e.totalCapacity = DIRECT_BUFFER_POOL.getTotalCapacity();
-        e.memoryUsed = DIRECT_BUFFER_POOL.getMemoryUsed();
-        e.maxCapacity = VM.maxDirectMemory();
         e.commit();
     }
 }