AllSync.java

/*
 * Copyright (c) 2008, 2024, Jaroslav Bachorik <j.bachorik@btrace.io>.
 * All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


import io.btrace.core.annotations.BTrace;
import io.btrace.core.annotations.Kind;
import io.btrace.core.annotations.Location;
import io.btrace.core.annotations.OnMethod;
import io.btrace.core.annotations.Where;

import static io.btrace.core.BTraceUtils.identityStr;
import static io.btrace.BTrace.println;

/**
 * This script traces method/block entry into every method of
 * every class in javax.swing package! Think before using
 * this script -- this will slow down your app significantly!!
 * Note tha Where.BEFORE is default. For synchronized blocks, BEFORE
 * means before "monitorenter" bytecode. For synchronized methods, we
 * can not have probe point Where.BEFORE. Lock is acquired before entering
 * synchronized method. By making the probe point Where.AFTER for SYNC_ENTER,
 * we probe after monitorenter bytecode or synchronized method entry.
 */
@BTrace
public class AllSync {
    @OnMethod(
            clazz = "/javax\\.swing\\..*/",
            method = "/.*/",
            location = @Location(value = Kind.SYNC_ENTRY, where = Where.AFTER)
    )
    public static void onSyncEntry(Object obj) {
        println("after synchronized entry: " + identityStr(obj));
    }

    @OnMethod(
            clazz = "/javax\\.swing\\..*/",
            method = "/.*/",
            location = @Location(Kind.SYNC_EXIT)
    )
    public static void onSyncExit(Object obj) {
        println("before synchronized exit: " + identityStr(obj));
    }
}