Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/NativeSignatureIterator.java @ 12226:7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
Reviewed-by: coleenp, mgerdin, hseigel
| author | ehelin |
|---|---|
| date | Mon, 12 Aug 2013 17:37:02 +0200 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2001, 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.runtime; | |
| 26 | |
| 27 import sun.jvm.hotspot.oops.*; | |
| 28 | |
| 29 /** Specialized SignatureIterator: Used for native call purposes */ | |
| 30 | |
| 31 public abstract class NativeSignatureIterator extends SignatureIterator { | |
| 32 private Method method; | |
| 33 // [RGV] We need seperate JNI and Java offset values because in 64 bit mode, the argument offsets | |
| 34 // are not in sync with the Java stack. For example a long takes up 1 "C" stack entry | |
| 35 // but 2 Java stack entries. | |
| 36 private int offset; // The java stack offset | |
| 37 private int prepended; // number of prepended JNI parameters (1 JNIEnv, plus 1 mirror if static) | |
| 38 private int jni_offset; // the current parameter offset, starting with 0 | |
| 39 | |
| 40 public void doBool () { passInt(); jni_offset++; offset++; } | |
| 41 public void doChar () { passInt(); jni_offset++; offset++; } | |
| 42 public void doFloat () { | |
| 43 if (VM.getVM().isLP64()) { | |
| 44 passFloat(); | |
| 45 } else { | |
| 46 passInt(); | |
| 47 } | |
| 48 jni_offset++; offset++; | |
| 49 } | |
| 50 | |
| 51 public void doDouble() { | |
| 52 if (VM.getVM().isLP64()) { | |
| 53 passDouble(); jni_offset++; offset += 2; | |
| 54 } else { | |
| 55 passDouble(); jni_offset += 2; offset += 2; | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 public void doByte () { passInt(); jni_offset++; offset++; } | |
| 60 public void doShort () { passInt(); jni_offset++; offset++; } | |
| 61 public void doInt () { passInt(); jni_offset++; offset++; } | |
| 62 | |
| 63 public void doLong () { | |
| 64 if (VM.getVM().isLP64()) { | |
| 65 passLong(); jni_offset++; offset += 2; | |
| 66 } else { | |
| 67 passLong(); jni_offset += 2; offset += 2; | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 public void doVoid () { throw new RuntimeException("should not reach here"); } | |
| 72 public void doObject(int begin, int end) { passObject(); jni_offset++; offset++; } | |
| 73 public void doArray (int begin, int end) { passObject(); jni_offset++; offset++; } | |
| 74 | |
| 75 public Method method() { return method; } | |
| 76 public int offset() { return offset; } | |
| 77 public int jniOffset() { return jni_offset + prepended; } | |
| 78 public boolean isStatic() { return method.isStatic(); } | |
| 79 | |
| 80 public abstract void passInt(); | |
| 81 public abstract void passLong(); | |
| 82 public abstract void passObject(); | |
| 83 public abstract void passFloat(); | |
| 84 public abstract void passDouble(); | |
| 85 | |
| 86 public NativeSignatureIterator(Method method) { | |
| 87 super(method.getSignature()); | |
| 88 this.method = method; | |
| 89 offset = 0; | |
| 90 jni_offset = 0; | |
| 91 | |
| 92 int JNIEnv_words = 1; | |
| 93 int mirror_words = 1; | |
| 94 prepended = !isStatic() ? JNIEnv_words : JNIEnv_words + mirror_words; | |
| 95 } | |
| 96 | |
| 97 // iterate() calles the 2 virtual methods according to the following invocation syntax: | |
| 98 // | |
| 99 // {pass_int | pass_long | pass_object} | |
| 100 // | |
| 101 // Arguments are handled from left to right (receiver first, if any). | |
| 102 // The offset() values refer to the Java stack offsets but are 0 based and increasing. | |
| 103 // The java_offset() values count down to 0, and refer to the Java TOS. | |
| 104 // The jni_offset() values increase from 1 or 2, and refer to C arguments. | |
| 105 public void iterate() { | |
| 106 if (!isStatic()) { | |
| 107 // handle receiver (not handled by iterate because not in signature) | |
| 108 passObject(); jni_offset++; offset++; | |
| 109 } | |
| 110 iterateParameters(); | |
| 111 } | |
| 112 } |