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JDK 11 jdk.hotspot.agent.jmod - Hotspot Agent Module
JDK 11 jdk.hotspot.agent.jmod is the JMOD file for JDK 11 Hotspot Agent module.
JDK 11 Hotspot Agent module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.hotspot.agent.jmod.
JDK 11 Hotspot Agent module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.
JDK 11 Hotspot Agent module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.hotspot.agent.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ sun/jvm/hotspot/tools/jcore/ByteCodeRewriter.java
/* * Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * */ package sun.jvm.hotspot.tools.jcore; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.interpreter.*; import sun.jvm.hotspot.utilities.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import java.security.AccessController; import java.security.PrivilegedAction; import java.security.AccessControlContext; import java.security.PrivilegedExceptionAction; import java.security.PrivilegedActionException; public class ByteCodeRewriter { private Method method; private ConstantPool cpool; private ConstantPoolCache cpCache; private byte[] code; private Bytes bytes; private static final int jintSize = 4; public static final boolean DEBUG; static { String debug = (String) AccessController.doPrivileged( new PrivilegedAction() { public Object run() { return System.getProperty("sun.jvm.hotspot.tools.jcore.ByteCodeRewriter.DEBUG"); } } ); DEBUG = (debug != null ? debug.equalsIgnoreCase("true") : false); } protected void debugMessage(String message) { System.out.println(message); } public ByteCodeRewriter(Method method, ConstantPool cpool, byte[] code) { this.method = method; this.cpool = cpool; this.cpCache = cpool.getCache(); this.code = code; this.bytes = VM.getVM().getBytes(); } protected short getConstantPoolIndexFromRefMap(int rawcode, int bci) { int refIndex; String fmt = Bytecodes.format(rawcode); switch (fmt.length()) { case 2: refIndex = 0xFF & method.getBytecodeByteArg(bci); break; case 3: refIndex = 0xFFFF & bytes.swapShort(method.getBytecodeShortArg(bci)); break; default: throw new IllegalArgumentException(); } return (short)cpool.objectToCPIndex(refIndex); } protected short getConstantPoolIndex(int rawcode, int bci) { // get ConstantPool index from ConstantPoolCacheIndex at given bci String fmt = Bytecodes.format(rawcode); int cpCacheIndex; switch (fmt.length()) { case 2: cpCacheIndex = method.getBytecodeByteArg(bci); break; case 3: cpCacheIndex = method.getBytecodeShortArg(bci); break; case 5: if (fmt.indexOf("__") >= 0) cpCacheIndex = method.getBytecodeShortArg(bci); else cpCacheIndex = method.getBytecodeIntArg(bci); break; default: throw new IllegalArgumentException(); } if (cpCache == null) { return (short) cpCacheIndex; } else if (fmt.indexOf("JJJJ") >= 0) { // Invokedynamic require special handling cpCacheIndex = ~cpCacheIndex; cpCacheIndex = bytes.swapInt(cpCacheIndex); return (short) cpCache.getEntryAt(cpCacheIndex).getConstantPoolIndex(); } else if (fmt.indexOf("JJ") >= 0) { // change byte-ordering and go via cache return (short) cpCache.getEntryAt((int) (0xFFFF & bytes.swapShort((short)cpCacheIndex))).getConstantPoolIndex(); } else if (fmt.indexOf("j") >= 0) { // go via cache return (short) cpCache.getEntryAt((int) (0xFF & cpCacheIndex)).getConstantPoolIndex(); } else { return (short) cpCacheIndex; } } static private void writeShort(byte[] buf, int index, short value) { buf[index] = (byte) ((value >> 8) & 0x00FF); buf[index + 1] = (byte) (value & 0x00FF); } public void rewrite() { int bytecode = Bytecodes._illegal; int hotspotcode = Bytecodes._illegal; int len = 0; if (DEBUG) { String msg = method.getMethodHolder().getName().asString() + "." + method.getName().asString() + method.getSignature().asString(); debugMessage(msg); } for (int bci = 0; bci < code.length;) { hotspotcode = Bytecodes.codeAt(method, bci); bytecode = Bytecodes.javaCode(hotspotcode); if (Assert.ASSERTS_ENABLED) { int code_from_buffer = 0xFF & code[bci]; Assert.that(code_from_buffer == hotspotcode || code_from_buffer == Bytecodes._breakpoint, "Unexpected bytecode found in method bytecode buffer!"); } // update the code buffer hotspot specific bytecode with the jvm bytecode code[bci] = (byte) (0xFF & bytecode); short cpoolIndex = 0; switch (bytecode) { // bytecodes with ConstantPoolCache index case Bytecodes._getstatic: case Bytecodes._putstatic: case Bytecodes._getfield: case Bytecodes._putfield: case Bytecodes._invokevirtual: case Bytecodes._invokespecial: case Bytecodes._invokestatic: case Bytecodes._invokeinterface: { cpoolIndex = getConstantPoolIndex(hotspotcode, bci + 1); writeShort(code, bci + 1, cpoolIndex); break; } case Bytecodes._invokedynamic: cpoolIndex = getConstantPoolIndex(hotspotcode, bci + 1); writeShort(code, bci + 1, cpoolIndex); writeShort(code, bci + 3, (short)0); // clear out trailing bytes break; case Bytecodes._ldc_w: if (hotspotcode != bytecode) { // fast_aldc_w puts constant in reference map cpoolIndex = getConstantPoolIndexFromRefMap(hotspotcode, bci + 1); writeShort(code, bci + 1, cpoolIndex); } break; case Bytecodes._ldc: if (hotspotcode != bytecode) { // fast_aldc puts constant in reference map cpoolIndex = getConstantPoolIndexFromRefMap(hotspotcode, bci + 1); code[bci + 1] = (byte)(cpoolIndex); } break; } len = Bytecodes.lengthFor(bytecode); if (len <= 0) len = Bytecodes.lengthAt(method, bci); if (DEBUG) { String operand = ""; switch (len) { case 2: operand += code[bci + 1]; break; case 3: operand += (cpoolIndex != 0)? cpoolIndex : method.getBytecodeShortArg(bci + 1); break; case 5: operand += method.getBytecodeIntArg(bci + 1); break; } // the operand following # is not quite like javap output. // in particular, for goto & goto_w, the operand is PC relative // offset for jump. Javap adds relative offset with current PC // to give absolute bci to jump to. String message = "\t\t" + bci + " " + Bytecodes.name(bytecode); if (hotspotcode != bytecode) message += " [" + Bytecodes.name(hotspotcode) + "]"; if (operand != "") message += " #" + operand; if (DEBUG) debugMessage(message); } bci += len; } } }
⏎ sun/jvm/hotspot/tools/jcore/ByteCodeRewriter.java
Or download all of them as a single archive file:
File name: jdk.hotspot.agent-11.0.1-src.zip File size: 1243786 bytes Release date: 2018-11-04 Download
⇒ JDK 11 jdk.httpserver.jmod - HTTP Server Module
2020-02-29, 131735👍, 0💬
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