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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package sun.reflect;
27
28 import java.lang.reflect;
29
30 /** Used only for the first few invocations of a Constructor;
31 afterward, switches to bytecode-based implementation */
32
33 class NativeConstructorAccessorImpl extends ConstructorAccessorImpl {
34 private Constructor c;
35 private DelegatingConstructorAccessorImpl parent;
36 private int numInvocations;
37
38 NativeConstructorAccessorImpl(Constructor c) {
39 this.c = c;
40 }
41
42 public Object newInstance(Object[] args)
43 throws InstantiationException,
44 IllegalArgumentException,
45 InvocationTargetException
46 {
47 if (++numInvocations > ReflectionFactory.inflationThreshold()) {
48 ConstructorAccessorImpl acc = (ConstructorAccessorImpl)
49 new MethodAccessorGenerator().
50 generateConstructor(c.getDeclaringClass(),
51 c.getParameterTypes(),
52 c.getExceptionTypes(),
53 c.getModifiers());
54 parent.setDelegate(acc);
55 }
56
57 return newInstance0(c, args);
58 }
59
60 void setParent(DelegatingConstructorAccessorImpl parent) {
61 this.parent = parent;
62 }
63
64 private static native Object newInstance0(Constructor c, Object[] args)
65 throws InstantiationException,
66 IllegalArgumentException,
67 InvocationTargetException;
68 }
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