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Diffstat (limited to 'src/Java/sun/repackage/NativeConstructorAccessorImpl.java')
-rw-r--r-- | src/Java/sun/repackage/NativeConstructorAccessorImpl.java | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/Java/sun/repackage/NativeConstructorAccessorImpl.java b/src/Java/sun/repackage/NativeConstructorAccessorImpl.java new file mode 100644 index 0000000000..3acc91e956 --- /dev/null +++ b/src/Java/sun/repackage/NativeConstructorAccessorImpl.java @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2001, 2013, 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 sun.repackage; + +import java.lang.reflect.*; + +/** Used only for the first few invocations of a Constructor; + afterward, switches to bytecode-based implementation */ + +class NativeConstructorAccessorImpl extends ConstructorAccessorImpl { + private final Constructor<?> c; + private DelegatingConstructorAccessorImpl parent; + private int numInvocations; + + NativeConstructorAccessorImpl(Constructor<?> c) { + this.c = c; + } + + public Object newInstance(Object[] args) + throws InstantiationException, + IllegalArgumentException, + InvocationTargetException + { + // We can't inflate a constructor belonging to a vm-anonymous class + // because that kind of class can't be referred to by name, hence can't + // be found from the generated bytecode. + if (++numInvocations > ReflectionFactory.inflationThreshold() + && !ReflectUtil.isVMAnonymousClass(c.getDeclaringClass())) { + ConstructorAccessorImpl acc = (ConstructorAccessorImpl) + new MethodAccessorGenerator(). + generateConstructor(c.getDeclaringClass(), + c.getParameterTypes(), + c.getExceptionTypes(), + c.getModifiers()); + parent.setDelegate(acc); + } + + return newInstance0(c, args); + } + + void setParent(DelegatingConstructorAccessorImpl parent) { + this.parent = parent; + } + + private static native Object newInstance0(Constructor<?> c, Object[] args) + throws InstantiationException, + IllegalArgumentException, + InvocationTargetException; +} |