--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/g1/plab/lib/PLABUtils.java	Wed Jan 27 18:22:25 2016 +0300
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2016, 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 gc.g1.plab.lib;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import jdk.test.lib.Utils;
+
+/**
+ * Utilities for PLAB testing.
+ */
+public class PLABUtils {
+
+    /**
+     * PLAB tests default options list
+     */
+    private final static String[] GC_TUNE_OPTIONS = {
+        "-XX:+UseG1GC",
+        "-XX:G1HeapRegionSize=1m",
+        "-XX:OldSize=64m",
+        "-XX:-UseAdaptiveSizePolicy",
+        "-XX:-UseTLAB",
+        "-XX:SurvivorRatio=1"
+    };
+
+    /**
+     * GC logging options list.
+     */
+    private final static String G1_PLAB_LOGGING_OPTIONS[] = {
+        "-Xlog:gc=debug,gc+plab=debug"
+    };
+
+    /**
+     * List of options required to use WhiteBox.
+     */
+    private final static String WB_DIAGNOSTIC_OPTIONS[] = {
+        "-Xbootclasspath/a:.",
+        "-XX:+UnlockDiagnosticVMOptions",
+        "-XX:+WhiteBoxAPI"
+    };
+
+    /**
+     * Prepares options for testing.
+     *
+     * @param options - additional options for testing
+     * @return List of options
+     */
+    public static List<String> prepareOptions(List<String> options) {
+        if (options == null) {
+            throw new IllegalArgumentException("Options cannot be null");
+        }
+        List<String> executionOtions = new ArrayList<>(
+                Arrays.asList(Utils.getTestJavaOpts())
+        );
+        Collections.addAll(executionOtions, WB_DIAGNOSTIC_OPTIONS);
+        Collections.addAll(executionOtions, G1_PLAB_LOGGING_OPTIONS);
+        Collections.addAll(executionOtions, GC_TUNE_OPTIONS);
+        executionOtions.addAll(options);
+        return executionOtions;
+    }
+}