src/share/vm/runtime/reflectionCompat.hpp

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   1 /*
   2  * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 



  25 // During the development of the JDK 1.4 reflection implementation
  26 // based on dynamic bytecode generation, it was hoped that the bulk of
  27 // the native code for reflection could be removed. Unfortunately
  28 // there is currently a significant cost associated with loading the
  29 // stub classes which impacts startup time. Until this cost can be
  30 // reduced, the JVM entry points JVM_InvokeMethod and
  31 // JVM_NewInstanceFromConstructor are still needed; these and their
  32 // dependents currently constitute the bulk of the native code for
  33 // reflection. If this cost is reduced in the future, the
  34 // NativeMethodAccessorImpl and NativeConstructorAccessorImpl classes
  35 // can be removed from sun.reflect and all of the code guarded by this
  36 // flag removed from the product build. (Non-product builds,
  37 // specifically the "optimized" target, would retain the code so they
  38 // could be dropped into earlier JDKs for comparative benchmarking.)
  39 
  40 //#ifndef PRODUCT
  41 # define SUPPORT_OLD_REFLECTION
  42 //#endif


   1 /*
   2  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_RUNTIME_REFLECTIONCOMPAT_HPP
  26 #define SHARE_VM_RUNTIME_REFLECTIONCOMPAT_HPP
  27 
  28 // During the development of the JDK 1.4 reflection implementation
  29 // based on dynamic bytecode generation, it was hoped that the bulk of
  30 // the native code for reflection could be removed. Unfortunately
  31 // there is currently a significant cost associated with loading the
  32 // stub classes which impacts startup time. Until this cost can be
  33 // reduced, the JVM entry points JVM_InvokeMethod and
  34 // JVM_NewInstanceFromConstructor are still needed; these and their
  35 // dependents currently constitute the bulk of the native code for
  36 // reflection. If this cost is reduced in the future, the
  37 // NativeMethodAccessorImpl and NativeConstructorAccessorImpl classes
  38 // can be removed from sun.reflect and all of the code guarded by this
  39 // flag removed from the product build. (Non-product builds,
  40 // specifically the "optimized" target, would retain the code so they
  41 // could be dropped into earlier JDKs for comparative benchmarking.)
  42 
  43 //#ifndef PRODUCT
  44 # define SUPPORT_OLD_REFLECTION
  45 //#endif
  46 
  47 #endif // SHARE_VM_RUNTIME_REFLECTIONCOMPAT_HPP