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| 1 | +/* |
| 2 | + * Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved. |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | + * |
| 5 | + * This code is free software; you can redistribute it and/or modify it |
| 6 | + * under the terms of the GNU General Public License version 2 only, as |
| 7 | + * published by the Free Software Foundation. Oracle designates this |
| 8 | + * particular file as subject to the "Classpath" exception as provided |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. |
| 10 | + * |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | + * accompanied this code). |
| 16 | + * |
| 17 | + * You should have received a copy of the GNU General Public License version |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | + * |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| 22 | + * or visit www.oracle.com if you need additional information or have any |
| 23 | + * questions. |
| 24 | + */ |
| 25 | +package jdk.graal.compiler.truffle.test; |
| 26 | + |
| 27 | +import java.io.IOException; |
| 28 | +import java.util.LinkedList; |
| 29 | +import java.util.Map; |
| 30 | +import java.util.concurrent.ConcurrentHashMap; |
| 31 | +import java.util.concurrent.CountDownLatch; |
| 32 | +import java.util.concurrent.TimeUnit; |
| 33 | +import java.util.concurrent.atomic.AtomicInteger; |
| 34 | +import java.util.regex.Matcher; |
| 35 | +import java.util.regex.Pattern; |
| 36 | + |
| 37 | +import org.graalvm.polyglot.Context; |
| 38 | +import org.graalvm.polyglot.Source; |
| 39 | +import org.junit.Assert; |
| 40 | +import org.junit.Assume; |
| 41 | +import org.junit.Test; |
| 42 | + |
| 43 | +import com.oracle.truffle.api.Truffle; |
| 44 | +import com.oracle.truffle.api.instrumentation.test.InstrumentationTestLanguage; |
| 45 | +import com.oracle.truffle.api.source.SourceSection; |
| 46 | +import com.oracle.truffle.api.test.SubprocessTestUtils; |
| 47 | +import com.oracle.truffle.compiler.TruffleCompilerListener; |
| 48 | +import com.oracle.truffle.runtime.AbstractCompilationTask; |
| 49 | +import com.oracle.truffle.runtime.FixedPointMath; |
| 50 | +import com.oracle.truffle.runtime.OptimizedCallTarget; |
| 51 | +import com.oracle.truffle.runtime.OptimizedTruffleRuntime; |
| 52 | +import com.oracle.truffle.runtime.OptimizedTruffleRuntimeListener; |
| 53 | + |
| 54 | +public class DynamicCompilationThresholdsTest { |
| 55 | + private static final Pattern TARGET_NAME_PATTERN = Pattern.compile("DynamicCompilationThresholdsTest(\\d+)"); |
| 56 | + static AtomicInteger ID = new AtomicInteger(); |
| 57 | + |
| 58 | + @SuppressWarnings("unused") |
| 59 | + static class SourceCompilation { |
| 60 | + private final int id; |
| 61 | + private final Source source; |
| 62 | + private final CountDownLatch compilationDoneLatch = new CountDownLatch(1); |
| 63 | + private final CountDownLatch compilationStartedLatch = new CountDownLatch(1); |
| 64 | + private final CountDownLatch compilationGoLatch = new CountDownLatch(1); |
| 65 | + |
| 66 | + SourceCompilation(int id, Source source) { |
| 67 | + this.id = id; |
| 68 | + this.source = source; |
| 69 | + } |
| 70 | + } |
| 71 | + |
| 72 | + Map<Integer, SourceCompilation> compilationMap = new ConcurrentHashMap<>(); |
| 73 | + |
| 74 | + @Test |
| 75 | + public void testDynamicCompilationThreshods() throws IOException, InterruptedException { |
| 76 | + Assume.assumeTrue(Truffle.getRuntime() instanceof OptimizedTruffleRuntime); |
| 77 | + Runnable test = () -> { |
| 78 | + OptimizedTruffleRuntime optimizedTruffleRuntime = (OptimizedTruffleRuntime) Truffle.getRuntime(); |
| 79 | + OptimizedTruffleRuntimeListener listener = new OptimizedTruffleRuntimeListener() { |
| 80 | + @Override |
| 81 | + public void onCompilationSuccess(OptimizedCallTarget target, AbstractCompilationTask task, TruffleCompilerListener.GraphInfo graph, |
| 82 | + TruffleCompilerListener.CompilationResultInfo result) { |
| 83 | + if (getSourceCompilation(target) instanceof SourceCompilation compilation) { |
| 84 | + compilation.compilationDoneLatch.countDown(); |
| 85 | + } |
| 86 | + } |
| 87 | + |
| 88 | + private SourceCompilation getSourceCompilation(OptimizedCallTarget target) { |
| 89 | + if (target.getRootNode().getSourceSection() instanceof SourceSection section && section.getSource() != null) { |
| 90 | + Matcher matcher = TARGET_NAME_PATTERN.matcher(section.getSource().getName()); |
| 91 | + if (matcher.find()) { |
| 92 | + return compilationMap.get(Integer.parseInt(matcher.group(1))); |
| 93 | + } |
| 94 | + } |
| 95 | + return null; |
| 96 | + } |
| 97 | + |
| 98 | + @Override |
| 99 | + public void onCompilationStarted(OptimizedCallTarget target, AbstractCompilationTask task) { |
| 100 | + if (getSourceCompilation(target) instanceof SourceCompilation compilation) { |
| 101 | + compilation.compilationStartedLatch.countDown(); |
| 102 | + try { |
| 103 | + compilation.compilationGoLatch.await(); |
| 104 | + } catch (InterruptedException ie) { |
| 105 | + throw new AssertionError(ie); |
| 106 | + } |
| 107 | + } |
| 108 | + } |
| 109 | + }; |
| 110 | + optimizedTruffleRuntime.addListener(listener); |
| 111 | + try (Context context = Context.newBuilder().allowExperimentalOptions(true) // |
| 112 | + .option("engine.BackgroundCompilation", "true") // |
| 113 | + .option("engine.CompileImmediately", "false") // |
| 114 | + .option("engine.SingleTierCompilationThreshold", "1") // |
| 115 | + .option("engine.MultiTier", "false") // |
| 116 | + .option("engine.DynamicCompilationThresholds", "true") // |
| 117 | + .option("engine.DynamicCompilationThresholdsMaxNormalLoad", "20") // |
| 118 | + .option("engine.DynamicCompilationThresholdsMinNormalLoad", "10") // |
| 119 | + .option("engine.DynamicCompilationThresholdsMinScale", "0.1") // |
| 120 | + .option("engine.CompilerThreads", "1").build()) { |
| 121 | + int firstCompilation = submitCompilation(context); |
| 122 | + waitForCompilationStart(firstCompilation); |
| 123 | + LinkedList<Integer> scales = new LinkedList<>(); |
| 124 | + int firstScale = FixedPointMath.toFixedPoint(0.1); |
| 125 | + Assert.assertEquals(firstScale, optimizedTruffleRuntime.compilationThresholdScale()); |
| 126 | + scales.push(firstScale); |
| 127 | + for (int i = 1; i <= 10; i++) { |
| 128 | + submitCompilation(context); |
| 129 | + int scale = FixedPointMath.toFixedPoint(0.1 + 0.9 * i / 10); |
| 130 | + Assert.assertEquals(scale, optimizedTruffleRuntime.compilationThresholdScale()); |
| 131 | + scales.push(scale); |
| 132 | + } |
| 133 | + for (int i = 1; i <= 10; i++) { |
| 134 | + submitCompilation(context); |
| 135 | + int scale = FixedPointMath.toFixedPoint(1.0); |
| 136 | + Assert.assertEquals(scale, optimizedTruffleRuntime.compilationThresholdScale()); |
| 137 | + scales.push(scale); |
| 138 | + } |
| 139 | + for (int i = 1; i <= 10; i++) { |
| 140 | + submitCompilation(context); |
| 141 | + int scale = FixedPointMath.toFixedPoint(1.0 + 0.9 * i / 10); |
| 142 | + Assert.assertEquals(scale, optimizedTruffleRuntime.compilationThresholdScale()); |
| 143 | + scales.push(scale); |
| 144 | + } |
| 145 | + allowCompilationToProceed(firstCompilation); |
| 146 | + waitForCompilationDone(firstCompilation); |
| 147 | + scales.pop(); |
| 148 | + for (int i = firstCompilation + 1; i <= 30; i++) { |
| 149 | + waitForCompilationStart(i); |
| 150 | + Assert.assertEquals((int) scales.pop(), optimizedTruffleRuntime.compilationThresholdScale()); |
| 151 | + allowCompilationToProceed(i); |
| 152 | + waitForCompilationDone(i); |
| 153 | + } |
| 154 | + Assert.assertTrue(scales.isEmpty()); |
| 155 | + } catch (IOException | InterruptedException e) { |
| 156 | + throw new AssertionError(e); |
| 157 | + } finally { |
| 158 | + optimizedTruffleRuntime.removeListener(listener); |
| 159 | + } |
| 160 | + }; |
| 161 | + SubprocessTestUtils.newBuilder(DynamicCompilationThresholdsTest.class, test).run(); |
| 162 | + } |
| 163 | + |
| 164 | + private void allowCompilationToProceed(int id) { |
| 165 | + compilationMap.get(id).compilationGoLatch.countDown(); |
| 166 | + } |
| 167 | + |
| 168 | + private void waitForCompilationStart(int id) throws InterruptedException { |
| 169 | + if (!compilationMap.get(id).compilationStartedLatch.await(5, TimeUnit.MINUTES)) { |
| 170 | + throw new AssertionError("Compilation of source " + id + " did not start in time"); |
| 171 | + } |
| 172 | + } |
| 173 | + |
| 174 | + private void waitForCompilationDone(int id) throws InterruptedException { |
| 175 | + if (!compilationMap.get(id).compilationDoneLatch.await(5, TimeUnit.MINUTES)) { |
| 176 | + throw new AssertionError("Compilation of source " + id + " did not finish in time"); |
| 177 | + } |
| 178 | + } |
| 179 | + |
| 180 | + int submitCompilation(Context context) throws IOException { |
| 181 | + int id = ID.getAndIncrement(); |
| 182 | + Source source = Source.newBuilder(InstrumentationTestLanguage.ID, "CONSTANT(" + id + ")", "DynamicCompilationThresholdsTest" + id).build(); |
| 183 | + SourceCompilation compilation = new SourceCompilation(id, source); |
| 184 | + compilationMap.put(id, compilation); |
| 185 | + context.eval(source); |
| 186 | + return id; |
| 187 | + } |
| 188 | +} |
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