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hotspot/src/share/vm/runtime/reflectionCompat.hpp

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+/*
+ * Copyright 2001 Sun Microsystems, Inc.  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.
+ *
+ * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// During the development of the JDK 1.4 reflection implementation
+// based on dynamic bytecode generation, it was hoped that the bulk of
+// the native code for reflection could be removed. Unfortunately
+// there is currently a significant cost associated with loading the
+// stub classes which impacts startup time. Until this cost can be
+// reduced, the JVM entry points JVM_InvokeMethod and
+// JVM_NewInstanceFromConstructor are still needed; these and their
+// dependents currently constitute the bulk of the native code for
+// reflection. If this cost is reduced in the future, the
+// NativeMethodAccessorImpl and NativeConstructorAccessorImpl classes
+// can be removed from sun.reflect and all of the code guarded by this
+// flag removed from the product build. (Non-product builds,
+// specifically the "optimized" target, would retain the code so they
+// could be dropped into earlier JDKs for comparative benchmarking.)
+
+//#ifndef PRODUCT
+# define SUPPORT_OLD_REFLECTION
+//#endif