/* * Copyright (c) 2014, 2024, 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. */ /** * @test SharedBaseAddress * @bug 8265705 8267351 * @summary Test variety of values for SharedBaseAddress, making sure * VM handles normal values as well as edge values w/o a crash. * @requires vm.cds * @library /test/lib * @run driver SharedBaseAddress 0 */ /** * @test SharedBaseAddress * @bug 8265705 8267351 * @summary Test variety of values for SharedBaseAddress, making sure * VM handles normal values as well as edge values w/o a crash. * @requires vm.cds * @library /test/lib * @run driver SharedBaseAddress 1 */ /** * @test SharedBaseAddress * @bug 8265705 8267351 * @summary Test variety of values for SharedBaseAddress, making sure * VM handles normal values as well as edge values w/o a crash. * @requires vm.cds * @requires vm.bits == 64 * @library /test/lib * @run driver SharedBaseAddress 0 provoke */ /** * @test SharedBaseAddress * @bug 8265705 8267351 * @summary Test variety of values for SharedBaseAddress, making sure * VM handles normal values as well as edge values w/o a crash. * @requires vm.cds * @requires vm.bits == 64 * @library /test/lib * @run driver SharedBaseAddress 1 provoke */ import jdk.test.lib.cds.CDSTestUtils; import jdk.test.lib.cds.CDSOptions; import jdk.test.lib.Platform; import jdk.test.lib.process.OutputAnalyzer; import jtreg.SkippedException; public class SharedBaseAddress { static final boolean skipUncompressedOopsTests; static boolean checkSkipUncompressedOopsTests(String prop) { String opts = System.getProperty(prop); return opts.contains("+AOTClassLinking") && opts.matches(".*[+]Use[A-Za-z]+GC.*") && !opts.contains("+UseG1GC"); } static { // AOTClassLinking requires the ability to load archived heap objects. However, // due to JDK-8341371, only G1GC supports loading archived heap objects // with uncompressed oops. skipUncompressedOopsTests = checkSkipUncompressedOopsTests("test.vm.opts") || checkSkipUncompressedOopsTests("test.java.opts"); } // shared base address test table for {32, 64}bit VM private static final String[] testTableShared = { "1g", "0", "1", "64k", "64M", "0xfff80000", // archive top wraps around 32-bit address space "0xffffffff", // archive bottom wraps around 32-bit address space -- due to align_up() "0" // always let OS pick the base address at runtime (ASLR for CDS archive) }; // shared base address test table for 64bit VM only private static final String[] testTable64 = { "8g", "64g","512g", "4t", "32t", "128t", "0x800001000", // Default base address + 1 page - probably valid but unaligned to metaspace alignment, see JDK 8247522 "0xfffffffffff00000", // archive top wraps around 64-bit address space "0xffffffffffffffff", // archive bottom wraps around 64-bit address space -- due to align_up() "0x00007ffffff00000", // end of archive will go past the end of user space on linux/x64 "0x500000000" // (20g) below 32g at a 4g aligned address, but cannot be expressed with a logical // immediate on aarch64 (0x5_0000_0000) (see JDK-8265705) }; // failed pattern private static String failedPattern = "os::release_memory\\(0x[0-9a-fA-F]*,\\s[0-9]*\\)\\sfailed"; public static void test(String[] args, String[] testTable) throws Exception { int mid = testTable.length / 2; int start = args[0].equals("0") ? 0 : mid; int end = args[0].equals("0") ? mid : testTable.length; boolean provoke = (args.length > 1 && args[1].equals("provoke")); if (provoke && skipUncompressedOopsTests) { throw new SkippedException("Test skipped due to JDK-8341371"); } // provoke == true: we want to increase the chance that mapping the generated archive at the designated base // succeeds, to test Klass pointer encoding at that weird location. We do this by sizing heap + class space // small, and by switching off compressed oops. // provoke == false: we just go with default parameters. This is more of a test of // CDS' ability to recover if mapping at runtime fails. for (int i = start; i < end; i++) { String testEntry = testTable[i]; String filename = "SharedBaseAddress-base" + testEntry + ".jsa"; System.out.println("sharedBaseAddress = " + testEntry); CDSOptions opts = (new CDSOptions()) .setArchiveName(filename) .addPrefix("-XX:SharedBaseAddress=" + testEntry) .addPrefix("-Xlog:cds=debug") .addPrefix("-Xlog:cds+reloc=debug") .addPrefix("-Xlog:nmt=debug") .addPrefix("-Xlog:os=debug") .addPrefix("-Xlog:gc+metaspace") .addPrefix("-XX:NativeMemoryTracking=detail"); if (provoke) { opts.addPrefix("-Xmx128m") .addPrefix("-XX:CompressedClassSpaceSize=32m") .addPrefix("-XX:-UseCompressedOops"); } if (Platform.isDebugBuild()) { // Make VM start faster in debug build with large heap. opts.addPrefix("-XX:-ZapUnusedHeapArea"); } CDSTestUtils.createArchiveAndCheck(opts); OutputAnalyzer out = CDSTestUtils.runWithArchiveAndCheck(opts); if (testEntry.equals("0")) { out.shouldContain("Archive(s) were created with -XX:SharedBaseAddress=0. Always map at os-selected address.") .shouldContain("Try to map archive(s) at an alternative address") .shouldNotMatch(failedPattern); } } } public static void main(String[] args) throws Exception { test(args, testTableShared); if (Platform.is64bit()) { test(args, testTable64); } } }