1 /*

     2  * Copyright (c) 2016, 2018, 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.TYPES_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 }