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JBR-6979 Modernize more WaitForSingleObject on Windows
Use -XX:+UnlockExperimentalVMOptions -XX:-UseModernSynchAPI to switch back to the original implementation
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| /* | ||
| * Copyright 2025 JetBrains s.r.o. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| /* | ||
| * @test | ||
| * @summary Verifies that the test finishes in due time | ||
| * @library /test/lib | ||
| * @run main/othervm Synch | ||
| */ | ||
| import java.util.concurrent.ExecutorService; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.concurrent.TimeUnit; | ||
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| public class Synch { | ||
| private static int counter = 0; | ||
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| private static final Object lock = new Object(); | ||
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| private static final int NUM_THREADS = 8; | ||
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| private static final long TEST_DURATION_SECONDS = 30; | ||
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| public static void main(String[] args) throws InterruptedException { | ||
| ExecutorService executor = Executors.newFixedThreadPool(NUM_THREADS); | ||
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| for (int i = 0; i < NUM_THREADS; i++) { | ||
| executor.submit(new AccessTask()); | ||
| } | ||
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| System.out.println("Warmup"); | ||
| TimeUnit.SECONDS.sleep(TEST_DURATION_SECONDS); | ||
| synchronized (lock) { | ||
| counter = 0; | ||
| } | ||
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| System.out.println("Starting the test..."); | ||
| TimeUnit.SECONDS.sleep(TEST_DURATION_SECONDS); | ||
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| executor.shutdownNow(); | ||
| System.out.println("Total synchronized accesses per millisecond: " + (long)((double)counter / (TEST_DURATION_SECONDS * 1000))); | ||
| } | ||
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| // Task performed by each thread | ||
| static class AccessTask implements Runnable { | ||
| @Override | ||
| public void run() { | ||
| while (!Thread.currentThread().isInterrupted()) { | ||
| synchronized (lock) { | ||
| counter++; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |