Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeInvoke.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 0a8e0d4345b3 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 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(); | |
| 1602 | 57 if (isInvokedynamic()) { |
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58 return cp.uncachedGetNameRefAt(indexForFieldOrMethod()); |
| 1602 | 59 } |
| 0 | 60 return cp.getNameRefAt(index()); |
| 61 } | |
| 62 | |
| 63 // returns the signature of the invoked method | |
| 64 public Symbol signature() { | |
| 65 ConstantPool cp = method().getConstants(); | |
| 1602 | 66 if (isInvokedynamic()) { |
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6964458: Reimplement class meta-data storage to use native memory
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67 return cp.uncachedGetSignatureRefAt(indexForFieldOrMethod()); |
| 1602 | 68 } |
| 0 | 69 return cp.getSignatureRefAt(index()); |
| 70 } | |
| 71 | |
| 72 public Method getInvokedMethod() { | |
| 73 return method().getConstants().getMethodRefAt(index()); | |
| 74 } | |
| 75 | |
| 76 // returns the result type (see BasicType.java) of the invoke | |
| 77 public int resultType() { | |
| 78 ResultTypeFinder rts = new ResultTypeFinder(signature()); | |
| 79 rts.iterate(); | |
| 80 return rts.type(); | |
| 81 } | |
| 82 | |
| 83 public int adjustedInvokeCode() { | |
| 84 return javaCode(); | |
| 85 } | |
| 86 | |
| 87 // "specified" method (from constant pool) | |
| 88 // FIXME: elided for now | |
| 89 // public Method staticTarget(); | |
| 90 | |
| 91 // Testers | |
| 92 public boolean isInvokeinterface() { return adjustedInvokeCode() == Bytecodes._invokeinterface; } | |
| 93 public boolean isInvokevirtual() { return adjustedInvokeCode() == Bytecodes._invokevirtual; } | |
| 94 public boolean isInvokestatic() { return adjustedInvokeCode() == Bytecodes._invokestatic; } | |
| 95 public boolean isInvokespecial() { return adjustedInvokeCode() == Bytecodes._invokespecial; } | |
| 1602 | 96 public boolean isInvokedynamic() { return adjustedInvokeCode() == Bytecodes._invokedynamic; } |
| 0 | 97 |
| 98 public boolean isValid() { return isInvokeinterface() || | |
| 99 isInvokevirtual() || | |
| 100 isInvokestatic() || | |
| 101 isInvokespecial(); } | |
| 102 public void verify() { | |
| 103 if (Assert.ASSERTS_ENABLED) { | |
| 104 Assert.that(isValid(), "check invoke"); | |
| 105 } | |
| 106 } | |
| 107 | |
| 108 public String toString() { | |
| 109 StringBuffer buf = new StringBuffer(); | |
| 110 buf.append(getJavaBytecodeName()); | |
| 111 buf.append(spaces); | |
| 112 buf.append('#'); | |
| 113 buf.append(Integer.toString(indexForFieldOrMethod())); | |
| 1602 | 114 if (isInvokedynamic()) { |
| 115 buf.append('('); | |
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116 buf.append(Integer.toString(index())); |
| 1602 | 117 buf.append(')'); |
| 118 } | |
| 0 | 119 buf.append(" [Method "); |
| 120 StringBuffer sigBuf = new StringBuffer(); | |
| 121 new SignatureConverter(signature(), sigBuf).iterateReturntype(); | |
| 122 buf.append(sigBuf.toString().replace('/', '.')); | |
| 123 buf.append(spaces); | |
| 124 buf.append(name().asString()); | |
| 125 buf.append('('); | |
| 126 sigBuf = new StringBuffer(); | |
| 127 new SignatureConverter(signature(), sigBuf).iterateParameters(); | |
| 128 buf.append(sigBuf.toString().replace('/', '.')); | |
| 129 buf.append(')'); | |
| 130 buf.append(']'); | |
| 131 if (code() != javaCode()) { | |
| 132 buf.append(spaces); | |
| 133 buf.append('['); | |
| 134 buf.append(getBytecodeName()); | |
| 135 buf.append(']'); | |
| 136 } | |
| 137 return buf.toString(); | |
| 138 } | |
| 139 } |