100 lines
4.0 KiB
Java
100 lines
4.0 KiB
Java
/*
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* Copyright (c) 2017, 2021, 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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/*
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* @test
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* @summary Write a lots of shared strings.
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* @requires vm.cds.archived.java.heap
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* @library /test/hotspot/jtreg/runtime/cds/appcds /test/lib
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* @build HelloString
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* @run driver/timeout=500 SharedStringsStress
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*/
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.OutputStreamWriter;
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import java.io.PrintWriter;
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import jdk.test.lib.cds.CDSOptions;
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import jdk.test.lib.cds.CDSTestUtils;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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public class SharedStringsStress {
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static {
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// EpsilonGC will run out of memory.
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CDSOptions.disableRuntimePrefixForEpsilonGC();
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}
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static String sharedArchiveConfigFile = CDSTestUtils.getOutputDir() + File.separator + "SharedStringsStress_gen.txt";
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public static void main(String[] args) throws Exception {
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try (FileOutputStream fos = new FileOutputStream(sharedArchiveConfigFile)) {
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PrintWriter out = new PrintWriter(new OutputStreamWriter(fos));
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out.println("VERSION: 1.0");
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out.println("@SECTION: String");
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out.println("31: shared_test_string_unique_14325");
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for (int i=0; i<200000; i++) {
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String s = "generated_string " + i;
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out.println(s.length() + ": " + s);
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}
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out.close();
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}
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SharedStringsUtils.run(args, SharedStringsStress::test);
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}
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public static void test(String[] args) throws Exception {
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String vmOptionsPrefix[] = SharedStringsUtils.getChildVMOptionsPrefix();
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String appJar = JarBuilder.build("SharedStringsStress", "HelloString");
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String test_cases[][] = {
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// default heap size
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{},
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// Test for handling of heap fragmentation. With sharedArchiveConfigFile, we will dump about
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// 18MB of shared objects on 64 bit VM (smaller on 32-bit).
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//
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// During dump time, an extra copy of these objects are allocated,
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// so we need about 36MB, plus a few MB for other system data. So 64MB total heap
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// should be enough.
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//
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// The VM should executed a full GC to maximize contiguous free space and
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// avoid fragmentation.
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{"-Xmx64m"},
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};
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for (String[] extra_opts: test_cases) {
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vmOptionsPrefix = TestCommon.concat(vmOptionsPrefix, extra_opts);
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OutputAnalyzer dumpOutput = TestCommon.dump(appJar, TestCommon.list("HelloString"),
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TestCommon.concat(vmOptionsPrefix,
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"-XX:SharedArchiveConfigFile=" + sharedArchiveConfigFile,
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"-Xlog:gc+region+cds",
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"-Xlog:gc+region=trace"));
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TestCommon.checkDump(dumpOutput);
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OutputAnalyzer execOutput = TestCommon.exec(appJar,
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TestCommon.concat(vmOptionsPrefix, "HelloString"));
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TestCommon.checkExec(execOutput);
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}
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}
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}
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