Mercurial > hg > graal-compiler
diff test/gc/metaspace/TestMetaspaceSizeFlags.java @ 12238:9e11762cee52
8024650: Don't adjust MaxMetaspaceSize up to MetaspaceSize
Reviewed-by: jwilhelm, brutisso, tschatzl
author | stefank |
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date | Fri, 13 Sep 2013 22:22:14 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/gc/metaspace/TestMetaspaceSizeFlags.java Fri Sep 13 22:22:14 2013 +0200 @@ -0,0 +1,108 @@ +/* + * Copyright (c) 2013, 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 com.oracle.java.testlibrary.OutputAnalyzer; +import com.oracle.java.testlibrary.ProcessTools; + +/* + * @test TestMetaspaceSizeFlags + * @key gc + * @bug 8024650 + * @summary Test that metaspace size flags can be set correctly + * @library /testlibrary + */ +public class TestMetaspaceSizeFlags { + public static final long K = 1024L; + public static final long M = 1024L * K; + + // HotSpot uses a number of different values to align memory size flags. + // This is currently the largest alignment (unless huge large pages are used). + public static final long MAX_ALIGNMENT = 32 * M; + + public static void main(String [] args) throws Exception { + testMaxMetaspaceSizeEQMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT); + // 8024650: MaxMetaspaceSize was adjusted instead of MetaspaceSize. + testMaxMetaspaceSizeLTMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT * 2); + testMaxMetaspaceSizeGTMetaspaceSize(MAX_ALIGNMENT * 2, MAX_ALIGNMENT); + testTooSmallInitialMetaspace(0, 0); + testTooSmallInitialMetaspace(0, MAX_ALIGNMENT); + testTooSmallInitialMetaspace(MAX_ALIGNMENT, 0); + } + + private static void testMaxMetaspaceSizeEQMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { + MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); + Asserts.assertEQ(maxMetaspaceSize, metaspaceSize); + Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); + Asserts.assertEQ(mf.metaspaceSize, metaspaceSize); + } + + private static void testMaxMetaspaceSizeLTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { + MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); + Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); + Asserts.assertEQ(mf.metaspaceSize, maxMetaspaceSize); + } + + private static void testMaxMetaspaceSizeGTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception { + MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize); + Asserts.assertGT(maxMetaspaceSize, metaspaceSize); + Asserts.assertGT(mf.maxMetaspaceSize, mf.metaspaceSize); + Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize); + Asserts.assertEQ(mf.metaspaceSize, metaspaceSize); + } + + private static void testTooSmallInitialMetaspace(long maxMetaspaceSize, long metaspaceSize) throws Exception { + OutputAnalyzer output = run(maxMetaspaceSize, metaspaceSize); + output.shouldContain("Too small initial Metaspace size"); + } + + private static MetaspaceFlags runAndGetValue(long maxMetaspaceSize, long metaspaceSize) throws Exception { + OutputAnalyzer output = run(maxMetaspaceSize, metaspaceSize); + output.shouldNotMatch("Error occurred during initialization of VM\n.*"); + + String stringMaxMetaspaceSize = output.firstMatch(".* MaxMetaspaceSize .* := (\\d+).*", 1); + String stringMetaspaceSize = output.firstMatch(".* MetaspaceSize .* := (\\d+).*", 1); + + return new MetaspaceFlags(Long.parseLong(stringMaxMetaspaceSize), + Long.parseLong(stringMetaspaceSize)); + } + + private static OutputAnalyzer run(long maxMetaspaceSize, long metaspaceSize) throws Exception { + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( + "-XX:MaxMetaspaceSize=" + maxMetaspaceSize, + "-XX:MetaspaceSize=" + metaspaceSize, + "-XX:-UseLargePages", // Prevent us from using 2GB large pages on solaris + sparc. + "-XX:+PrintFlagsFinal", + "-version"); + return new OutputAnalyzer(pb.start()); + } + + private static class MetaspaceFlags { + public long maxMetaspaceSize; + public long metaspaceSize; + public MetaspaceFlags(long maxMetaspaceSize, long metaspaceSize) { + this.maxMetaspaceSize = maxMetaspaceSize; + this.metaspaceSize = metaspaceSize; + } + } +}