8222799: java.beans.Introspector uses an obsolete methods cache

Reviewed-by: mdoerr
Backport-of: 921b467

Author: basil

src/java.desktop/share/classes/java/beans/Introspector.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2019, 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
@@ -22,33 +22,29 @@
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
-package java.beans;
 
-import com.sun.beans.TypeResolver;
-import com.sun.beans.WeakCache;
-import com.sun.beans.finder.ClassFinder;
-import com.sun.beans.introspect.ClassInfo;
-import com.sun.beans.introspect.EventSetInfo;
-import com.sun.beans.introspect.PropertyInfo;
+package java.beans;
 
 import java.awt.Component;
-
 import java.lang.ref.Reference;
 import java.lang.ref.SoftReference;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.lang.reflect.Type;
-
-import java.util.Map;
 import java.util.ArrayList;
-import java.util.Arrays;
+import java.util.EventObject;
 import java.util.HashMap;
 import java.util.Iterator;
-import java.util.EventObject;
 import java.util.List;
+import java.util.Map;
 import java.util.TreeMap;
 
+import com.sun.beans.TypeResolver;
+import com.sun.beans.finder.ClassFinder;
+import com.sun.beans.introspect.ClassInfo;
+import com.sun.beans.introspect.EventSetInfo;
+import com.sun.beans.introspect.PropertyInfo;
 import jdk.internal.misc.JavaBeansAccess;
 import jdk.internal.misc.SharedSecrets;
 import sun.reflect.misc.ReflectUtil;
@@ -115,9 +111,6 @@ public class Introspector {
      */
     public static final int IGNORE_ALL_BEANINFO        = 3;
 
-    // Static Caches to speed up introspection.
-    private static final WeakCache<Class<?>, Method[]> declaredMethodCache = new WeakCache<>();
-
     private Class<?> beanClass;
     private BeanInfo explicitBeanInfo;
     private BeanInfo superBeanInfo;
@@ -197,15 +190,10 @@ public static BeanInfo getBeanInfo(Class<?> beanClass)
             return (new Introspector(beanClass, null, USE_ALL_BEANINFO)).getBeanInfo();
         }
         ThreadGroupContext context = ThreadGroupContext.getContext();
-        BeanInfo beanInfo;
-        synchronized (declaredMethodCache) {
-            beanInfo = context.getBeanInfo(beanClass);
-        }
+        BeanInfo beanInfo = context.getBeanInfo(beanClass);
         if (beanInfo == null) {
             beanInfo = new Introspector(beanClass, null, USE_ALL_BEANINFO).getBeanInfo();
-            synchronized (declaredMethodCache) {
-                context.putBeanInfo(beanClass, beanInfo);
-            }
+            context.putBeanInfo(beanClass, beanInfo);
         }
         return beanInfo;
     }
@@ -374,12 +362,8 @@ public static void setBeanInfoSearchPath(String[] path) {
      *
      * @since 1.2
      */
-
     public static void flushCaches() {
-        synchronized (declaredMethodCache) {
-            ThreadGroupContext.getContext().clearBeanInfoCache();
-            declaredMethodCache.clear();
-        }
+        ThreadGroupContext.getContext().clearBeanInfoCache();
     }
 
     /**
@@ -402,10 +386,7 @@ public static void flushFromCaches(Class<?> clz) {
         if (clz == null) {
             throw new NullPointerException();
         }
-        synchronized (declaredMethodCache) {
-            ThreadGroupContext.getContext().removeBeanInfo(clz);
-            declaredMethodCache.put(clz, null);
-        }
+        ThreadGroupContext.getContext().removeBeanInfo(clz);
     }
 
     //======================================================================

src/java.desktop/share/classes/java/beans/ThreadGroupContext.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011, 2019, 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
@@ -88,26 +88,26 @@ void setGuiAvailable(boolean isGuiAvailable) {
     }
 
 
-    BeanInfo getBeanInfo(Class<?> type) {
+    synchronized BeanInfo getBeanInfo(Class<?> type) {
         return (this.beanInfoCache != null)
                 ? this.beanInfoCache.get(type)
                 : null;
     }
 
-    BeanInfo putBeanInfo(Class<?> type, BeanInfo info) {
+    synchronized BeanInfo putBeanInfo(Class<?> type, BeanInfo info) {
         if (this.beanInfoCache == null) {
             this.beanInfoCache = new WeakHashMap<>();
         }
         return this.beanInfoCache.put(type, info);
     }
 
-    void removeBeanInfo(Class<?> type) {
+    synchronized void removeBeanInfo(Class<?> type) {
         if (this.beanInfoCache != null) {
             this.beanInfoCache.remove(type);
         }
     }
 
-    void clearBeanInfoCache() {
+    synchronized void clearBeanInfoCache() {
         if (this.beanInfoCache != null) {
             this.beanInfoCache.clear();
         }