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test/gc/metaspace/TestMetaspaceSizeFlags.java@833b0f92429a (annotated)

test/gc/metaspace/TestMetaspaceSizeFlags.java

Wed, 27 Aug 2014 08:19:12 -0400

author

zgu

date

Wed, 27 Aug 2014 08:19:12 -0400

changeset 7074

833b0f92429a

parent 0

f90c822e73f8

permissions

-rw-r--r--

8046598: Scalable Native memory tracking development
Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	import com.oracle.java.testlibrary.Asserts;
aoqi@0	25	import com.oracle.java.testlibrary.OutputAnalyzer;
aoqi@0	26	import com.oracle.java.testlibrary.ProcessTools;
aoqi@0	27
aoqi@0	28	/*
aoqi@0	29	* @test TestMetaspaceSizeFlags
aoqi@0	30	* @key gc
aoqi@0	31	* @bug 8024650
aoqi@0	32	* @summary Test that metaspace size flags can be set correctly
aoqi@0	33	* @library /testlibrary
aoqi@0	34	*/
aoqi@0	35	public class TestMetaspaceSizeFlags {
aoqi@0	36	public static final long K = 1024L;
aoqi@0	37	public static final long M = 1024L * K;
aoqi@0	38
aoqi@0	39	// HotSpot uses a number of different values to align memory size flags.
aoqi@0	40	// This is currently the largest alignment (unless huge large pages are used).
aoqi@0	41	public static final long MAX_ALIGNMENT = 32 * M;
aoqi@0	42
aoqi@0	43	public static void main(String [] args) throws Exception {
aoqi@0	44	testMaxMetaspaceSizeEQMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT);
aoqi@0	45	// 8024650: MaxMetaspaceSize was adjusted instead of MetaspaceSize.
aoqi@0	46	testMaxMetaspaceSizeLTMetaspaceSize(MAX_ALIGNMENT, MAX_ALIGNMENT * 2);
aoqi@0	47	testMaxMetaspaceSizeGTMetaspaceSize(MAX_ALIGNMENT * 2, MAX_ALIGNMENT);
aoqi@0	48	testTooSmallInitialMetaspace(0, 0);
aoqi@0	49	testTooSmallInitialMetaspace(0, MAX_ALIGNMENT);
aoqi@0	50	testTooSmallInitialMetaspace(MAX_ALIGNMENT, 0);
aoqi@0	51	}
aoqi@0	52
aoqi@0	53	private static void testMaxMetaspaceSizeEQMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception {
aoqi@0	54	MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize);
aoqi@0	55	Asserts.assertEQ(maxMetaspaceSize, metaspaceSize);
aoqi@0	56	Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize);
aoqi@0	57	Asserts.assertEQ(mf.metaspaceSize, metaspaceSize);
aoqi@0	58	}
aoqi@0	59
aoqi@0	60	private static void testMaxMetaspaceSizeLTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception {
aoqi@0	61	MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize);
aoqi@0	62	Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize);
aoqi@0	63	Asserts.assertEQ(mf.metaspaceSize, maxMetaspaceSize);
aoqi@0	64	}
aoqi@0	65
aoqi@0	66	private static void testMaxMetaspaceSizeGTMetaspaceSize(long maxMetaspaceSize, long metaspaceSize) throws Exception {
aoqi@0	67	MetaspaceFlags mf = runAndGetValue(maxMetaspaceSize, metaspaceSize);
aoqi@0	68	Asserts.assertGT(maxMetaspaceSize, metaspaceSize);
aoqi@0	69	Asserts.assertGT(mf.maxMetaspaceSize, mf.metaspaceSize);
aoqi@0	70	Asserts.assertEQ(mf.maxMetaspaceSize, maxMetaspaceSize);
aoqi@0	71	Asserts.assertEQ(mf.metaspaceSize, metaspaceSize);
aoqi@0	72	}
aoqi@0	73
aoqi@0	74	private static void testTooSmallInitialMetaspace(long maxMetaspaceSize, long metaspaceSize) throws Exception {
aoqi@0	75	OutputAnalyzer output = run(maxMetaspaceSize, metaspaceSize);
aoqi@0	76	output.shouldContain("Too small initial Metaspace size");
aoqi@0	77	}
aoqi@0	78
aoqi@0	79	private static MetaspaceFlags runAndGetValue(long maxMetaspaceSize, long metaspaceSize) throws Exception {
aoqi@0	80	OutputAnalyzer output = run(maxMetaspaceSize, metaspaceSize);
aoqi@0	81	output.shouldNotMatch("Error occurred during initialization of VM\n.*");
aoqi@0	82
aoqi@0	83	String stringMaxMetaspaceSize = output.firstMatch(".* MaxMetaspaceSize .* := (\\d+).*", 1);
aoqi@0	84	String stringMetaspaceSize = output.firstMatch(".* MetaspaceSize .* := (\\d+).*", 1);
aoqi@0	85
aoqi@0	86	return new MetaspaceFlags(Long.parseLong(stringMaxMetaspaceSize),
aoqi@0	87	Long.parseLong(stringMetaspaceSize));
aoqi@0	88	}
aoqi@0	89
aoqi@0	90	private static OutputAnalyzer run(long maxMetaspaceSize, long metaspaceSize) throws Exception {
aoqi@0	91	ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
aoqi@0	92	"-XX:MaxMetaspaceSize=" + maxMetaspaceSize,
aoqi@0	93	"-XX:MetaspaceSize=" + metaspaceSize,
aoqi@0	94	"-XX:-UseLargePages", // Prevent us from using 2GB large pages on solaris + sparc.
aoqi@0	95	"-XX:+PrintFlagsFinal",
aoqi@0	96	"-version");
aoqi@0	97	return new OutputAnalyzer(pb.start());
aoqi@0	98	}
aoqi@0	99
aoqi@0	100	private static class MetaspaceFlags {
aoqi@0	101	public long maxMetaspaceSize;
aoqi@0	102	public long metaspaceSize;
aoqi@0	103	public MetaspaceFlags(long maxMetaspaceSize, long metaspaceSize) {
aoqi@0	104	this.maxMetaspaceSize = maxMetaspaceSize;
aoqi@0	105	this.metaspaceSize = metaspaceSize;
aoqi@0	106	}
aoqi@0	107	}
aoqi@0	108	}