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comparison agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeInvoke.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2001-2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.interpreter;
26
27 import sun.jvm.hotspot.oops.*;
28 import sun.jvm.hotspot.runtime.*;
29 import sun.jvm.hotspot.utilities.*;
30
31 public class BytecodeInvoke extends BytecodeWithCPIndex {
32 BytecodeInvoke(Method method, int bci) {
33 super(method, bci);
34 }
35
36 public static BytecodeInvoke at(Method method, int bci) {
37 BytecodeInvoke b = new BytecodeInvoke(method, bci);
38 if (Assert.ASSERTS_ENABLED) {
39 b.verify();
40 }
41 return b;
42 }
43
44 /** Like at, but returns null if the BCI is not at an invoke */
45 public static BytecodeInvoke atCheck(Method method, int bci) {
46 BytecodeInvoke b = new BytecodeInvoke(method, bci);
47 return (b.isValid() ? b : null);
48 }
49
50 public static BytecodeInvoke at(BytecodeStream bcs) {
51 return new BytecodeInvoke(bcs.method(), bcs.bci());
52 }
53
54 // returns the name of the invoked method
55 public Symbol name() {
56 ConstantPool cp = method().getConstants();
57 return cp.getNameRefAt(index());
58 }
59
60 // returns the signature of the invoked method
61 public Symbol signature() {
62 ConstantPool cp = method().getConstants();
63 return cp.getSignatureRefAt(index());
64 }
65
66 public Method getInvokedMethod() {
67 return method().getConstants().getMethodRefAt(index());
68 }
69
70 // returns the result type (see BasicType.java) of the invoke
71 public int resultType() {
72 ResultTypeFinder rts = new ResultTypeFinder(signature());
73 rts.iterate();
74 return rts.type();
75 }
76
77 public int adjustedInvokeCode() {
78 return javaCode();
79 }
80
81 // "specified" method (from constant pool)
82 // FIXME: elided for now
83 // public Method staticTarget();
84
85 // Testers
86 public boolean isInvokeinterface() { return adjustedInvokeCode() == Bytecodes._invokeinterface; }
87 public boolean isInvokevirtual() { return adjustedInvokeCode() == Bytecodes._invokevirtual; }
88 public boolean isInvokestatic() { return adjustedInvokeCode() == Bytecodes._invokestatic; }
89 public boolean isInvokespecial() { return adjustedInvokeCode() == Bytecodes._invokespecial; }
90
91 public boolean isValid() { return isInvokeinterface() ||
92 isInvokevirtual() ||
93 isInvokestatic() ||
94 isInvokespecial(); }
95 public void verify() {
96 if (Assert.ASSERTS_ENABLED) {
97 Assert.that(isValid(), "check invoke");
98 }
99 }
100
101 public String toString() {
102 StringBuffer buf = new StringBuffer();
103 buf.append(getJavaBytecodeName());
104 buf.append(spaces);
105 buf.append('#');
106 buf.append(Integer.toString(indexForFieldOrMethod()));
107 buf.append(" [Method ");
108 StringBuffer sigBuf = new StringBuffer();
109 new SignatureConverter(signature(), sigBuf).iterateReturntype();
110 buf.append(sigBuf.toString().replace('/', '.'));
111 buf.append(spaces);
112 buf.append(name().asString());
113 buf.append('(');
114 sigBuf = new StringBuffer();
115 new SignatureConverter(signature(), sigBuf).iterateParameters();
116 buf.append(sigBuf.toString().replace('/', '.'));
117 buf.append(')');
118 buf.append(']');
119 if (code() != javaCode()) {
120 buf.append(spaces);
121 buf.append('[');
122 buf.append(getBytecodeName());
123 buf.append(']');
124 }
125 return buf.toString();
126 }
127 }