01: /*
02: * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any 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, IllegalArgumentException,
44: InvocationTargetException {
45: if (++numInvocations > ReflectionFactory.inflationThreshold()) {
46: ConstructorAccessorImpl acc = (ConstructorAccessorImpl) new MethodAccessorGenerator()
47: .generateConstructor(c.getDeclaringClass(), c
48: .getParameterTypes(),
49: c.getExceptionTypes(), c.getModifiers());
50: parent.setDelegate(acc);
51: }
52:
53: return newInstance0(c, args);
54: }
55:
56: void setParent(DelegatingConstructorAccessorImpl parent) {
57: this .parent = parent;
58: }
59:
60: private static native Object newInstance0(Constructor c,
61: Object[] args) throws InstantiationException,
62: IllegalArgumentException, InvocationTargetException;
63: }
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