8261160: Add a deserialization JFR event

Co-authored-by: Sean Coffey <coffeys@openjdk.org>
Co-authored-by: Chris Hegarty <chegar@openjdk.org>
Reviewed-by: coffeys, rriggs, dfuchs, egahlin

src/java.base/share/classes/java/io/ObjectInputStream.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2020, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2021, 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
@@ -48,6 +48,7 @@ import java.util.concurrent.ConcurrentMap;
 import static java.io.ObjectStreamClass.processQueue;
 
 import jdk.internal.access.SharedSecrets;
+import jdk.internal.event.DeserializationEvent;
 import jdk.internal.misc.Unsafe;
 import sun.reflect.misc.ReflectUtil;
 import sun.security.action.GetBooleanAction;
@@ -1323,9 +1324,12 @@ public class ObjectInputStream
     }
 
     /**
-     * Invoke the serialization filter if non-null.
+     * Invokes the serialization filter if non-null.
+     *
      * If the filter rejects or an exception is thrown, throws InvalidClassException.
      *
+     * Logs and/or commits a {@code DeserializationEvent}, if configured.
+     *
      * @param clazz the class; may be null
      * @param arrayLength the array length requested; use {@code -1} if not creating an array
      * @throws InvalidClassException if it rejected by the filter or
@@ -1333,11 +1337,12 @@ public class ObjectInputStream
      */
     private void filterCheck(Class<?> clazz, int arrayLength)
             throws InvalidClassException {
+        // Info about the stream is not available if overridden by subclass, return 0
+        long bytesRead = (bin == null) ? 0 : bin.getBytesRead();
+        RuntimeException ex = null;
+        ObjectInputFilter.Status status = null;
+
         if (serialFilter != null) {
-            RuntimeException ex = null;
-            ObjectInputFilter.Status status;
-            // Info about the stream is not available if overridden by subclass, return 0
-            long bytesRead = (bin == null) ? 0 : bin.getBytesRead();
             try {
                 status = serialFilter.checkInput(new FilterValues(clazz, arrayLength,
                         totalObjectRefs, depth, bytesRead));
@@ -1355,12 +1360,24 @@ public class ObjectInputStream
                         status, clazz, arrayLength, totalObjectRefs, depth, bytesRead,
                         Objects.toString(ex, "n/a"));
             }
-            if (status == null ||
-                    status == ObjectInputFilter.Status.REJECTED) {
-                InvalidClassException ice = new InvalidClassException("filter status: " + status);
-                ice.initCause(ex);
-                throw ice;
-            }
+        }
+        DeserializationEvent event = new DeserializationEvent();
+        if (event.shouldCommit()) {
+            event.filterConfigured = serialFilter != null;
+            event.filterStatus = status != null ? status.name() : null;
+            event.type = clazz;
+            event.arrayLength = arrayLength;
+            event.objectReferences = totalObjectRefs;
+            event.depth = depth;
+            event.bytesRead = bytesRead;
+            event.exceptionType = ex != null ? ex.getClass() : null;
+            event.exceptionMessage = ex != null ? ex.getMessage() : null;
+            event.commit();
+        }
+        if (serialFilter != null && (status == null || status == ObjectInputFilter.Status.REJECTED)) {
+            InvalidClassException ice = new InvalidClassException("filter status: " + status);
+            ice.initCause(ex);
+            throw ice;
         }
     }
 

src/java.base/share/classes/jdk/internal/event/DeserializationEvent.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2021, 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.internal.event;
+
+/**
+ * Event details relating to deserialization.
+ */
+
+public final class DeserializationEvent extends Event {
+    public boolean filterConfigured;
+    public String filterStatus;
+    public Class<?> type;
+    public int arrayLength;
+    public long objectReferences;
+    public long depth;
+    public long bytesRead;
+    public Class<?> exceptionType;
+    public String exceptionMessage;
+}