author | cjplummer |
Thu, 29 Oct 2015 12:04:04 -0700 | |
changeset 33730 | 30e064828045 |
parent 29678 | dd2f3932c21e |
child 36851 | 03e2f4d0a421 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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import java.util.ArrayList; |
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import sun.hotspot.code.BlobType; |
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/* |
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* @test RandomAllocationTest |
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30e064828045
8140189: [TESTBUG] Get rid of "@library /../../test/lib" in jtreg tests
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parents:
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changeset
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* @library /testlibrary /test/lib |
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8075586: Add @modules as needed to the open hotspot tests
ykantser
parents:
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diff
changeset
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* @modules java.base/sun.misc |
dd2f3932c21e
8075586: Add @modules as needed to the open hotspot tests
ykantser
parents:
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* java.management |
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* @build RandomAllocationTest |
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* @run main ClassFileInstaller sun.hotspot.WhiteBox |
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* sun.hotspot.WhiteBox$WhiteBoxPermission |
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
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* -XX:CompileCommand=dontinline,Helper$TestCase::method |
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* -XX:+WhiteBoxAPI -XX:-SegmentedCodeCache RandomAllocationTest |
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
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* -XX:CompileCommand=dontinline,Helper$TestCase::method |
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* -XX:+WhiteBoxAPI -XX:+SegmentedCodeCache RandomAllocationTest |
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* @summary stressing code cache by allocating randomly sized "dummy" code blobs |
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*/ |
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public class RandomAllocationTest implements Runnable { |
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private static final long CODE_CACHE_SIZE |
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= Helper.WHITE_BOX.getUintxVMFlag("ReservedCodeCacheSize"); |
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private static final int MAX_BLOB_SIZE = (int) (CODE_CACHE_SIZE >> 7); |
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private static final BlobType[] BLOB_TYPES |
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= BlobType.getAvailable().toArray(new BlobType[0]); |
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public static void main(String[] args) { |
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new CodeCacheStressRunner(new RandomAllocationTest()).runTest(); |
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} |
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private final ArrayList<Long> blobs = new ArrayList<>(); |
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@Override |
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public void run() { |
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boolean allocate = blobs.isEmpty() || Helper.RNG.nextBoolean(); |
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if (allocate) { |
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int type = Helper.RNG.nextInt(BLOB_TYPES.length); |
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long addr = Helper.WHITE_BOX.allocateCodeBlob( |
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Helper.RNG.nextInt(MAX_BLOB_SIZE), BLOB_TYPES[type].id); |
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if (addr != 0) { |
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blobs.add(addr); |
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} |
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} else { |
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int index = Helper.RNG.nextInt(blobs.size()); |
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Helper.WHITE_BOX.freeCodeBlob(blobs.remove(index)); |
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} |
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} |
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} |