--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/codecache/stress/RandomAllocationTest.java	Mon Jan 12 18:58:49 2015 +0300
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2014, 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.
+ *
+ */
+
+import java.util.ArrayList;
+
+import sun.hotspot.code.BlobType;
+
+/*
+ * @test RandomAllocationTest
+ * @library /testlibrary /../../test/lib
+ * @build RandomAllocationTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *                              sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:CompileCommand=dontinline,Helper$TestCase::method
+ *                   -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache RandomAllocationTest
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:CompileCommand=dontinline,Helper$TestCase::method
+ *                   -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache RandomAllocationTest
+ * @summary stressing code cache by allocating randomly sized "dummy" code blobs
+ */
+public class RandomAllocationTest implements Runnable {
+    private static final long CODE_CACHE_SIZE
+            = Helper.WHITE_BOX.getUintxVMFlag("ReservedCodeCacheSize");
+    private static final int MAX_BLOB_SIZE = (int) (CODE_CACHE_SIZE >> 7);
+    private static final BlobType[] BLOB_TYPES
+            = BlobType.getAvailable().toArray(new BlobType[0]);
+
+    public static void main(String[] args) {
+        new CodeCacheStressRunner(new RandomAllocationTest()).runTest();
+    }
+
+    private final ArrayList<Long> blobs = new ArrayList<>();
+    @Override
+    public void run() {
+        boolean allocate = blobs.isEmpty() || Helper.RNG.nextBoolean();
+        if (allocate) {
+            int type = Helper.RNG.nextInt(BLOB_TYPES.length);
+            long addr = Helper.WHITE_BOX.allocateCodeBlob(
+                    Helper.RNG.nextInt(MAX_BLOB_SIZE), BLOB_TYPES[type].id);
+            if (addr != 0) {
+                blobs.add(addr);
+            }
+        } else {
+            int index = Helper.RNG.nextInt(blobs.size());
+            Helper.WHITE_BOX.freeCodeBlob(blobs.remove(index));
+        }
+    }
+
+}