218 lines
7.9 KiB
Java
218 lines
7.9 KiB
Java
/*
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* Copyright (c) 2021, Red Hat, Inc. 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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package compiler.arraycopy.stress;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Random;
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import jdk.test.lib.Platform;
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import jdk.test.lib.Utils;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.whitebox.cpuinfo.CPUInfo;
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/**
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* @test
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* @key stress randomness
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* @library /test/lib
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* @build compiler.arraycopy.stress.AbstractStressArrayCopy
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* compiler.arraycopy.stress.StressBooleanArrayCopy
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* compiler.arraycopy.stress.StressByteArrayCopy
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* compiler.arraycopy.stress.StressCharArrayCopy
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* compiler.arraycopy.stress.StressShortArrayCopy
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* compiler.arraycopy.stress.StressIntArrayCopy
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* compiler.arraycopy.stress.StressFloatArrayCopy
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* compiler.arraycopy.stress.StressLongArrayCopy
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* compiler.arraycopy.stress.StressDoubleArrayCopy
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* compiler.arraycopy.stress.StressObjectArrayCopy
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* jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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*
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* @run main/othervm/timeout=7200
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* -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
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* compiler.arraycopy.stress.TestStressArrayCopy
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*/
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public class TestStressArrayCopy {
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// These tests are remarkably memory bandwidth hungry. Running multiple
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// configs in parallel makes sense only when running a single test in
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// isolation, and only on machines with many memory channels. In common
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// testing, or even running all arraycopy stress tests at once, overloading
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// the system with many configs become counter-productive very quickly.
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//
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// Default to 1/4 of the CPUs, and allow users to override.
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static final int MAX_PARALLELISM = Integer.getInteger("maxParallelism",
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Math.max(1, Runtime.getRuntime().availableProcessors() / 4));
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private static List<String> mix(List<String> o, String... mix) {
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List<String> n = new ArrayList<>(o);
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for (String m : mix) {
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n.add(m);
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}
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return n;
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}
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private static List<List<String>> product(List<List<String>> list, String... mix) {
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List<List<String>> newList = new ArrayList<>();
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for (List<String> c : list) {
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for (String m : mix) {
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newList.add(mix(c, m));
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}
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}
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return newList;
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}
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private static List<List<String>> alternate(List<List<String>> list, String opt) {
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return product(list, "-XX:+" + opt, "-XX:-" + opt);
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}
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private static boolean containsFuzzy(List<String> list, String sub) {
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for (String s : list) {
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if (s.contains(sub)) return true;
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}
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return false;
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}
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public static void main(String... args) throws Exception {
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List<List<String>> configs = new ArrayList<>();
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List<String> cpuFeatures = CPUInfo.getFeatures();
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if (Platform.isX64() || Platform.isX86()) {
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// If CPU features were not found, provide a default config.
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if (cpuFeatures.isEmpty()) {
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configs.add(new ArrayList());
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}
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// Otherwise, select the tests that make sense on current platform.
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if (containsFuzzy(cpuFeatures, "avx512")) {
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configs.add(List.of("-XX:UseAVX=3"));
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}
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if (containsFuzzy(cpuFeatures, "avx2")) {
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configs.add(List.of("-XX:UseAVX=2"));
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}
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if (containsFuzzy(cpuFeatures, "avx")) {
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configs.add(List.of("-XX:UseAVX=1"));
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}
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if (containsFuzzy(cpuFeatures, "sse4")) {
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configs.add(List.of("-XX:UseAVX=0", "-XX:UseSSE=4"));
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}
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if (containsFuzzy(cpuFeatures, "sse3")) {
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configs.add(List.of("-XX:UseAVX=0", "-XX:UseSSE=3"));
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}
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if (containsFuzzy(cpuFeatures, "sse2")) {
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configs.add(List.of("-XX:UseAVX=0", "-XX:UseSSE=2"));
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}
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// x86_64 always has UseSSE >= 2. These lower configurations only
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// make sense for x86_32.
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if (Platform.isX86()) {
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if (containsFuzzy(cpuFeatures, "sse")) {
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configs.add(List.of("-XX:UseAVX=0", "-XX:UseSSE=1"));
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}
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configs.add(List.of("-XX:UseAVX=0", "-XX:UseSSE=0"));
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}
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// Alternate configs with other flags
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if (Platform.isX64()) {
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configs = alternate(configs, "UseCompressedOops");
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}
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configs = alternate(configs, "UseUnalignedLoadStores");
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} else if (Platform.isAArch64()) {
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// AArch64.
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configs.add(new ArrayList());
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// Alternate configs with other flags
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configs = alternate(configs, "UseCompressedOops");
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configs = alternate(configs, "UseSIMDForMemoryOps");
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} else {
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// Generic config.
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configs.add(new ArrayList());
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}
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String[] classNames = {
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"compiler.arraycopy.stress.StressBooleanArrayCopy",
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"compiler.arraycopy.stress.StressByteArrayCopy",
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"compiler.arraycopy.stress.StressCharArrayCopy",
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"compiler.arraycopy.stress.StressShortArrayCopy",
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"compiler.arraycopy.stress.StressIntArrayCopy",
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"compiler.arraycopy.stress.StressFloatArrayCopy",
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"compiler.arraycopy.stress.StressLongArrayCopy",
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"compiler.arraycopy.stress.StressDoubleArrayCopy",
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"compiler.arraycopy.stress.StressObjectArrayCopy",
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};
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ArrayList<Fork> forks = new ArrayList<>();
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int jobs = 0;
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for (List<String> c : configs) {
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for (String className : classNames) {
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// Start a new job
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{
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ProcessBuilder pb = ProcessTools.createTestJvm(mix(c, "-Xmx256m", className));
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Process p = pb.start();
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OutputAnalyzer oa = new OutputAnalyzer(p);
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forks.add(new Fork(p, oa));
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jobs++;
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}
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// Wait for the completion of other jobs
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while (jobs >= MAX_PARALLELISM) {
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Fork f = findDone(forks);
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if (f != null) {
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OutputAnalyzer oa = f.oa();
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oa.shouldHaveExitValue(0);
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forks.remove(f);
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jobs--;
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} else {
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// Nothing is done, wait a little.
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Thread.sleep(200);
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}
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}
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}
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}
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// Drain the rest
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for (Fork f : forks) {
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OutputAnalyzer oa = f.oa();
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oa.shouldHaveExitValue(0);
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}
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}
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private static Fork findDone(List<Fork> forks) {
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for (Fork f : forks) {
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if (!f.p().isAlive()) {
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return f;
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}
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}
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return null;
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}
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private static record Fork(Process p, OutputAnalyzer oa) {};
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}
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