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JDK 17 jdk.jfr.jmod - JFR Module
JDK 17 jdk.jfr.jmod is the JMOD file for JDK 17 JFR module.
JDK 17 JFR module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\jdk.jfr.jmod.
JDK 17 JFR module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.
JDK 17 JFR module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\jdk.jfr.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ jdk/jfr/internal/EventClassBuilder.java
/* * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package jdk.jfr.internal; import java.util.List; import java.util.concurrent.atomic.AtomicLong; import jdk.internal.org.objectweb.asm.AnnotationVisitor; import jdk.internal.org.objectweb.asm.ClassWriter; import jdk.internal.org.objectweb.asm.Label; import jdk.internal.org.objectweb.asm.MethodVisitor; import jdk.internal.org.objectweb.asm.Opcodes; import jdk.internal.org.objectweb.asm.Type; import jdk.internal.org.objectweb.asm.commons.GeneratorAdapter; import jdk.internal.org.objectweb.asm.commons.Method; import jdk.jfr.AnnotationElement; import jdk.jfr.Event; import jdk.jfr.ValueDescriptor; // Helper class for building dynamic events public final class EventClassBuilder { private static final Type TYPE_EVENT = Type.getType(Event.class); private static final Type TYPE_IOBE = Type.getType(IndexOutOfBoundsException.class); private static final Method DEFAULT_CONSTRUCTOR = Method.getMethod("void <init> ()"); private static final Method SET_METHOD = Method.getMethod("void set (int, java.lang.Object)"); private static final AtomicLong idCounter = new AtomicLong(); private final ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES); private final String fullClassName; private final Type type; private final List<ValueDescriptor> fields; private final List<AnnotationElement> annotationElements; public EventClassBuilder(List<AnnotationElement> annotationElements, List<ValueDescriptor> fields) { this.fullClassName = "jdk.jfr.DynamicEvent" + idCounter.incrementAndGet(); this.type = Type.getType("L" + fullClassName.replace(".", "/") + ";"); this.fields = fields; this.annotationElements = annotationElements; } public Class<? extends Event> build() { buildClassInfo(); buildConstructor(); buildFields(); buildSetMethod(); endClass(); byte[] bytes = classWriter.toByteArray(); ASMToolkit.logASM(fullClassName, bytes); return SecuritySupport.defineClass(Event.class, bytes).asSubclass(Event.class); } private void endClass() { classWriter.visitEnd(); } private void buildSetMethod() { GeneratorAdapter ga = new GeneratorAdapter(Opcodes.ACC_PUBLIC, SET_METHOD, null, null, classWriter); int index = 0; for (ValueDescriptor v : fields) { ga.loadArg(0); ga.visitLdcInsn(index); Label notEqual = new Label(); ga.ifICmp(GeneratorAdapter.NE, notEqual); ga.loadThis(); ga.loadArg(1); Type fieldType = ASMToolkit.toType(v); ga.unbox(ASMToolkit.toType(v)); ga.putField(type, v.getName(), fieldType); ga.visitInsn(Opcodes.RETURN); ga.visitLabel(notEqual); index++; } ga.throwException(TYPE_IOBE, "Index must between 0 and " + fields.size()); ga.endMethod(); } private void buildConstructor() { MethodVisitor mv = classWriter.visitMethod(Opcodes.ACC_PUBLIC, DEFAULT_CONSTRUCTOR.getName(), DEFAULT_CONSTRUCTOR.getDescriptor(), null, null); mv.visitIntInsn(Opcodes.ALOAD, 0); ASMToolkit.invokeSpecial(mv, TYPE_EVENT.getInternalName(), DEFAULT_CONSTRUCTOR); mv.visitInsn(Opcodes.RETURN); mv.visitMaxs(0, 0); } private void buildClassInfo() { String internalSuperName = ASMToolkit.getInternalName(Event.class.getName()); String internalClassName = type.getInternalName(); classWriter.visit(52, Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL + Opcodes.ACC_SUPER, internalClassName, null, internalSuperName, null); for (AnnotationElement a : annotationElements) { String descriptor = ASMToolkit.getDescriptor(a.getTypeName()); AnnotationVisitor av = classWriter.visitAnnotation(descriptor, true); for (ValueDescriptor v : a.getValueDescriptors()) { Object value = a.getValue(v.getName()); String name = v.getName(); if (v.isArray()) { AnnotationVisitor arrayVisitor = av.visitArray(name); Object[] array = (Object[]) value; for (int i = 0; i < array.length; i++) { arrayVisitor.visit(null, array[i]); } arrayVisitor.visitEnd(); } else { av.visit(name, value); } } av.visitEnd(); } } private void buildFields() { for (ValueDescriptor v : fields) { String internal = ASMToolkit.getDescriptor(v.getTypeName()); classWriter.visitField(Opcodes.ACC_PRIVATE, v.getName(), internal, null, null); // No need to store annotations on field since they will be replaced anyway. } } }
⏎ jdk/jfr/internal/EventClassBuilder.java
Or download all of them as a single archive file:
File name: jdk.jfr-17.0.5-src.zip File size: 363343 bytes Release date: 2022-09-13 Download
⇒ JDK 17 jdk.jlink.jmod - JLink Tool
2023-04-17, 8908👍, 0💬
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