88 lines
4.1 KiB
Java
88 lines
4.1 KiB
Java
/*
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* Copyright (c) 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 Relocate CDS archived regions to the top of the G1 heap
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* @bug 8214455
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* @requires vm.cds.write.archived.java.heap
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* @requires (sun.arch.data.model == "64" & os.maxMemory > 4g)
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* @requires vm.gc == "null"
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* @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
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* @build HeapFragmentationApp
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* @run driver jdk.test.lib.helpers.ClassFileInstaller -jar HeapFragmentationApp.jar HeapFragmentationApp
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* @run driver HeapFragmentationTest
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*/
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.helpers.ClassFileInstaller;
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public class HeapFragmentationTest {
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public static void main(String[] args) throws Exception {
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String mainClass = "HeapFragmentationApp";
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String appJar = ClassFileInstaller.getJarPath(mainClass + ".jar");
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String appClasses[] = TestCommon.list(mainClass);
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// We run with a 1400m heap, so we should be able to allocate a 1000m buffer, regardless
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// of the heap size chosen at dump time.
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String dumpTimeHeapSize = "-Xmx800m";
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String runTimeHeapSize = "-Xmx1400m";
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String BUFF_SIZE = Integer.toString(1000 * 1024 * 1024);
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String successOutput = "array.length = " + BUFF_SIZE;
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// On Linux/x64, this would (usually, if not affected by ASLR) force the low end of
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// the heap to be at 0x600000000. Thus, the heap ranges would be
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//
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// dump time: [0x600000000 ... 0x600000000 + 800m]
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// [AHR] <- archived heap regions are dumped at here
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//
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// run time: [0x600000000 ............... 0x600000000 + 1400m]
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// [AHR] <- archived heap regions are moved to here
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// |<---- max allocatable size ----->|
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String heapBase = "-XX:HeapBaseMinAddress=0x600000000";
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TestCommon.dump(appJar, appClasses,
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heapBase,
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dumpTimeHeapSize, "-Xlog:cds=debug");
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String execArgs[] = TestCommon.concat("-cp", appJar,
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"-showversion",
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heapBase,
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"-Xlog:cds=debug",
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"-Xlog:gc+heap+exit",
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"-Xlog:gc,gc+heap,gc+ergo+heap",
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"-XX:+CrashOnOutOfMemoryError",
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"-XX:+IgnoreUnrecognizedVMOptions",
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"-XX:+G1ExitOnExpansionFailure");
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// First, make sure the test runs without CDS
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TestCommon.runWithoutCDS(TestCommon.concat(execArgs, runTimeHeapSize, mainClass, BUFF_SIZE))
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.assertNormalExit(successOutput);
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// Run with CDS. The archived heap regions should be relocated to avoid fragmentation.
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TestCommon.run(TestCommon.concat(execArgs, runTimeHeapSize, mainClass, BUFF_SIZE))
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.assertNormalExit(successOutput);
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}
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}
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