1 /* 2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jfr.internal; 27 28 import jdk.internal.org.objectweb.asm.commons.Method; 29 import jdk.jfr.internal.EventInstrumentation.FieldInfo; 30 31 public enum EventWriterMethod { 32 33 BEGIN_EVENT("(" + jdk.internal.org.objectweb.asm.Type.getType(PlatformEventType.class).getDescriptor() + ")Z", "???", "beginEvent"), 34 END_EVENT("()Z", "???", "endEvent"), 35 PUT_BYTE("(B)V", "byte", "putByte"), 36 PUT_SHORT("(S)V", "short", "putShort"), 37 PUT_INT("(I)V", "int", "putInt"), 38 PUT_LONG("(J)V", "long", "putLong"), 39 PUT_FLOAT("(F)V", "float", "putFloat"), 40 PUT_DOUBLE("(D)V", "double", "putDouble"), 41 PUT_CHAR("(C)V", "char", "putChar"), 42 PUT_BOOLEAN("(Z)V", "boolean", "putBoolean"), 43 PUT_THREAD("(Ljava/lang/Thread;)V", Type.THREAD.getName(), "putThread"), 44 PUT_CLASS("(Ljava/lang/Class;)V", Type.CLASS.getName(), "putClass"), 45 PUT_STRING("(Ljava/lang/String;Ljdk/jfr/internal/StringPool;)V", Type.STRING.getName(), "putString"), 46 PUT_EVENT_THREAD("()V", Type.THREAD.getName(), "putEventThread"), 47 PUT_STACK_TRACE("()V", Type.ORACLE_TYPE_PREFIX + "StackTrace", "putStackTrace"); 48 49 private final Method asmMethod; 50 private final String typeDescriptor; 51 52 EventWriterMethod(String paramSignature, String typeName, String methodName) { 53 this.typeDescriptor = ASMToolkit.getDescriptor(typeName); 54 this.asmMethod = new Method(methodName, paramSignature); 55 } 56 57 public Method asASM() { 58 return asmMethod; 59 } 60 61 /** 62 * Return method in {@link EventWriter} class to use when writing event of 63 * a certain type. 64 * 65 * @param v field info 66 * 67 * @return the method 68 */ 69 public static EventWriterMethod lookupMethod(FieldInfo v) { 70 // event thread 71 if (v.fieldName.equals(EventInstrumentation.FIELD_EVENT_THREAD)) { 72 return EventWriterMethod.PUT_EVENT_THREAD; 73 } 74 for (EventWriterMethod m : EventWriterMethod.values()) { 75 if (v.fieldDescriptor.equals(m.typeDescriptor)) { 76 return m; 77 } 78 } 79 throw new Error("Unknown type " + v.fieldDescriptor); 80 } 81 }