--- old/test/test/lib/jdk/test/lib/LockFreeLogger.java	2019-09-25 13:00:32.003182737 +0300
+++ /dev/null	2019-06-26 20:30:32.375097000 +0300
@@ -1,84 +0,0 @@
-/*
- * Copyright (c) 2014, 2017, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package jdk.test.lib;
-
-import java.util.Collection;
-import java.util.Comparator;
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.ConcurrentLinkedQueue;
-import java.util.concurrent.atomic.AtomicInteger;
-import java.util.stream.Collectors;
-
-/**
- * A logger designed specifically to allow collecting ordered log messages
- * in a multi-threaded environment without involving any kind of locking.
- * <p>
- * It is particularly useful in situations when one needs to assert various
- * details about the tested thread state or the locks it hold while also wanting
- * to produce diagnostic log messages.
- * <p>
- * The logger does not provide any guarantees about the completness of the
- * logs written from different threads - it is up to the caller to make sure
- * {@code toString()} method is called only when all the activity has ceased
- * and the per-thread logs contain all the necessary data.
- *
- * @author Jaroslav Bachorik
- **/
-public class LockFreeLogger {
-    private final AtomicInteger logCntr = new AtomicInteger(0);
-    private final Collection<Map<Integer, String>> allRecords = new ConcurrentLinkedQueue<>();
-    private final ThreadLocal<Map<Integer, String>> records = ThreadLocal.withInitial(ConcurrentHashMap::new);
-
-    public LockFreeLogger() {
-        allRecords.add(records.get());
-    }
-
-    /**
-     * Log a message
-     * @param format Message format
-     * @param params Message parameters
-     */
-    public void log(String format, Object ... params) {
-        int id = logCntr.getAndIncrement();
-        records.get().put(id, String.format(format, params));
-    }
-
-    /**
-     * Will generate an aggregated log of chronologically ordered messages.
-     * <p>
-     * Make sure that you call this method only when all the related threads
-     * have finished; otherwise you might get incomplete data.
-     *
-     * @return An aggregated log of chronologically ordered messages
-     */
-    @Override
-    public String toString() {
-        return allRecords.stream()
-            .flatMap(m -> m.entrySet().stream())
-            .sorted(Comparator.comparing(Map.Entry::getKey))
-            .map(Map.Entry::getValue)
-            .collect(Collectors.joining());
-    }
-}