167 lines
7.4 KiB
Java
167 lines
7.4 KiB
Java
/*
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* Copyright (c) 2014, 2023, 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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* @test id=invalid
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* @bug 8022865
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* @summary Tests for the -XX:CompressedClassSpaceSize command line option
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* @requires vm.bits == 64 & vm.opt.final.UseCompressedOops == true
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* @requires vm.flagless
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* @library /test/lib
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* @modules java.base/jdk.internal.misc java.management
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* @run driver CompressedClassSpaceSize invalid
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*/
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/*
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* @test id=valid_small
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* @bug 8022865
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* @summary Tests for the -XX:CompressedClassSpaceSize command line option
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* @requires vm.bits == 64 & vm.opt.final.UseCompressedOops == true
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* @requires vm.flagless
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* @library /test/lib
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* @modules java.base/jdk.internal.misc java.management
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* @run driver CompressedClassSpaceSize valid_small
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*/
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/*
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* @test id=valid_large_nocds
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* @bug 8022865
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* @summary Tests for the -XX:CompressedClassSpaceSize command line option
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* @requires vm.bits == 64 & vm.opt.final.UseCompressedOops == true
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* @requires vm.flagless
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* @library /test/lib
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* @modules java.base/jdk.internal.misc java.management
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* @run driver CompressedClassSpaceSize valid_large_nocds
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*/
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/*
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* @test id=valid_large_cds
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* @bug 8022865
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* @summary Tests for the -XX:CompressedClassSpaceSize command line option
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* @requires vm.bits == 64 & vm.opt.final.UseCompressedOops == true & vm.cds
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* @requires vm.flagless
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* @library /test/lib
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* @modules java.base/jdk.internal.misc java.management
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* @run driver CompressedClassSpaceSize valid_large_cds
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*/
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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public class CompressedClassSpaceSize {
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final static long MB = 1024 * 1024;
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final static long minAllowedClassSpaceSize = MB;
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final static long minRealClassSpaceSize = 16 * MB;
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final static long maxClassSpaceSize = 4096 * MB;
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// For the valid_large_cds sub test: we need to have a notion of what archive size to
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// maximally expect, with a generous fudge factor to avoid having to tweak this test
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// ofent. Note: today's default archives are around 16-20 MB.
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final static long maxExpectedArchiveSize = 512 * MB;
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public static void main(String[] args) throws Exception {
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ProcessBuilder pb;
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OutputAnalyzer output;
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switch (args[0]) {
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case "invalid": {
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// < Minimum size
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pb = ProcessTools.createLimitedTestJavaProcessBuilder("-XX:CompressedClassSpaceSize=0",
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"-version");
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output = new OutputAnalyzer(pb.start());
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output.shouldContain("outside the allowed range")
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.shouldHaveExitValue(1);
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// Invalid size of -1 should be handled correctly
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pb = ProcessTools.createLimitedTestJavaProcessBuilder("-XX:CompressedClassSpaceSize=-1",
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"-version");
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output = new OutputAnalyzer(pb.start());
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output.shouldContain("Improperly specified VM option 'CompressedClassSpaceSize=-1'")
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.shouldHaveExitValue(1);
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// > Maximum size
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pb = ProcessTools.createLimitedTestJavaProcessBuilder("-XX:CompressedClassSpaceSize=" + maxClassSpaceSize + 1,
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"-version");
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output = new OutputAnalyzer(pb.start());
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output.shouldContain("outside the allowed range")
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.shouldHaveExitValue(1);
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pb = ProcessTools.createLimitedTestJavaProcessBuilder("-XX:-UseCompressedClassPointers",
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"-XX:CompressedClassSpaceSize=" + minAllowedClassSpaceSize,
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"-version");
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output = new OutputAnalyzer(pb.start());
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output.shouldContain("Setting CompressedClassSpaceSize has no effect when compressed class pointers are not used")
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.shouldHaveExitValue(0);
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}
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break;
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case "valid_small": {
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// Make sure the minimum size is set correctly and printed
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// (Note: ccs size are rounded up to the next larger root chunk boundary (16m).
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// Note that this is **reserved** size and does not affect rss.
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pb = ProcessTools.createLimitedTestJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions",
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"-XX:CompressedClassSpaceSize=" + minAllowedClassSpaceSize,
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"-Xlog:gc+metaspace",
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"-version");
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output = new OutputAnalyzer(pb.start());
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output.shouldMatch("Compressed class space.*" + minRealClassSpaceSize)
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.shouldHaveExitValue(0);
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}
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break;
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case "valid_large_nocds": {
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// Without CDS, we should get 4G
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pb = ProcessTools.createLimitedTestJavaProcessBuilder("-XX:CompressedClassSpaceSize=" + maxClassSpaceSize,
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"-Xshare:off", "-Xlog:metaspace*", "-version");
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output = new OutputAnalyzer(pb.start());
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output.shouldMatch("Compressed class space.*" + maxClassSpaceSize)
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.shouldHaveExitValue(0);
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}
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break;
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case "valid_large_cds": {
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// Create archive
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pb = ProcessTools.createLimitedTestJavaProcessBuilder(
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"-XX:SharedArchiveFile=./abc.jsa", "-Xshare:dump", "-version");
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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// With CDS, class space should fill whatever the CDS archive leaves us (modulo alignment)
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pb = ProcessTools.createLimitedTestJavaProcessBuilder("-XX:CompressedClassSpaceSize=" + maxClassSpaceSize,
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"-XX:SharedArchiveFile=./abc.jsa", "-Xshare:on", "-Xlog:metaspace*", "-version");
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output = new OutputAnalyzer(pb.start());
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output.shouldHaveExitValue(0);
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long reducedSize = Long.parseLong(
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output.firstMatch("reducing class space size from " + maxClassSpaceSize + " to (\\d+)", 1));
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if (reducedSize < (maxClassSpaceSize - maxExpectedArchiveSize)) {
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output.reportDiagnosticSummary();
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throw new RuntimeException("Class space size too small?");
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}
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output.shouldMatch("Compressed class space.*" + reducedSize);
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}
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break;
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default:
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throw new RuntimeException("invalid sub test " + args[0]);
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}
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}
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}
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