--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/codecache/jmx/InitialAndMaxUsageTest.java	Sat Dec 13 00:13:05 2014 +0300
@@ -0,0 +1,107 @@
+/*
+ * 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 com.oracle.java.testlibrary.Asserts;
+import java.lang.management.MemoryPoolMXBean;
+import java.util.ArrayList;
+import java.util.List;
+import sun.hotspot.code.BlobType;
+
+/*
+ * @test InitialAndMaxUsageTest
+ * @library /testlibrary /../../test/lib
+ * @build InitialAndMaxUsageTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *     sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm -Xbootclasspath/a:. -XX:-UseCodeCacheFlushing
+ *     -XX:-MethodFlushing -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
+ *     -XX:+SegmentedCodeCache -XX:CompileCommand=compileonly,null::*
+ *     InitialAndMaxUsageTest
+ * @summary testing of initial and max usage
+ */
+public class InitialAndMaxUsageTest {
+
+    private static final double CACHE_USAGE_COEF = 0.95d;
+    private final BlobType btype;
+    private final boolean lowerBoundIsZero;
+    private final long maxSize;
+
+    public InitialAndMaxUsageTest(BlobType btype) {
+        this.btype = btype;
+        this.maxSize = btype.getSize();
+        /* Only profiled code cache initial size should be 0, because of
+         -XX:CompileCommand=compileonly,null::* non-methods might be not empty,
+         as well as non-profiled methods, because it's used as fallback in
+         case non-methods is full */
+        lowerBoundIsZero = btype == BlobType.MethodProfiled;
+    }
+
+    public static void main(String[] args) {
+        for (BlobType btype : BlobType.getAvailable()) {
+            new InitialAndMaxUsageTest(btype).runTest();
+        }
+    }
+
+    private void fillWithSize(long size, List<Long> blobs) {
+        long blob;
+        while ((blob = CodeCacheUtils.WB.allocateCodeBlob(size, btype.id))
+                != 0L) {
+            blobs.add(blob);
+        }
+    }
+
+    protected void runTest() {
+        long headerSize = CodeCacheUtils.getHeaderSize(btype);
+        MemoryPoolMXBean bean = btype.getMemoryPool();
+        long initialUsage = btype.getMemoryPool().getUsage().getUsed();
+        System.out.printf("INFO: trying to test %s of max size %d and initial"
+                + " usage %d%n", bean.getName(), maxSize, initialUsage);
+        Asserts.assertLT(initialUsage + headerSize + 1L, maxSize,
+                "Initial usage is close to total size for " + bean.getName());
+        if (lowerBoundIsZero) {
+            Asserts.assertEQ(initialUsage, 0L, "Unexpected initial usage");
+        }
+        ArrayList<Long> blobs = new ArrayList<>();
+        long minAllocationUnit = CodeCacheUtils.MIN_ALLOCATION - headerSize;
+        /* now filling code cache with large-sized allocation first, since
+         lots of small allocations takes too much time, so, just a small
+         optimization */
+        try {
+            for (int coef = 1000000; coef > 0; coef /= 10) {
+                fillWithSize(coef * minAllocationUnit, blobs);
+            }
+            Asserts.assertGT((double) bean.getUsage().getUsed(),
+                    CACHE_USAGE_COEF * maxSize, String.format("Unable to fill "
+                            + "more than %f of %s. Reported usage is %d ",
+                            CACHE_USAGE_COEF, bean.getName(),
+                            bean.getUsage().getUsed()));
+        } finally {
+            for (long entry : blobs) {
+                CodeCacheUtils.WB.freeCodeBlob(entry);
+            }
+        }
+        System.out.printf("INFO: Scenario finished successfully for %s%n",
+                bean.getName());
+    }
+
+}