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5 changes: 1 addition & 4 deletions
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...outine/RoundRobinOutputCoroutineTest.java → ...outine/RoundRobinOutputCoroutineTest.java
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110 changes: 0 additions & 110 deletions
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...test/java/com/github/akurilov/concurrent/test/throttle/SequentialWeightsThrottleTest.java
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src/test/java/com/github/akurilov/concurrent/throttle/SequentialWeightsThrottleTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package com.github.akurilov.concurrent.throttle; | ||
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| import org.junit.Test; | ||
| import static org.junit.Assert.assertEquals; | ||
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| import java.util.concurrent.ExecutorService; | ||
| import java.util.concurrent.Executors; | ||
| import java.util.concurrent.TimeUnit; | ||
| import java.util.concurrent.atomic.LongAdder; | ||
| import java.util.concurrent.locks.LockSupport; | ||
|
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| /** | ||
| Created by andrey on 06.11.16. | ||
| */ | ||
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| public class SequentialWeightsThrottleTest { | ||
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| private static final int WRITE = 0; | ||
| private static final int READ = 1; | ||
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| private final int[] weights = new int[] { | ||
| 80, | ||
| 20 | ||
| }; | ||
| private final LongAdder[] resultCounters = new LongAdder[] { | ||
| new LongAdder(), | ||
| new LongAdder() | ||
| }; | ||
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| private final SequentialWeightsThrottle wt = new SequentialWeightsThrottle(weights); | ||
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| private final class SubmTask | ||
| implements Runnable { | ||
| private final int origin; | ||
| public SubmTask(final int origin) { | ||
| this.origin = origin; | ||
| } | ||
| @Override | ||
| public final void run() { | ||
| while(true) { | ||
| if(wt.tryAcquire(origin)) { | ||
| resultCounters[origin].increment(); | ||
| } else { | ||
| LockSupport.parkNanos(1); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| @Test | ||
| public void testRequestApprovalFor() | ||
| throws Exception { | ||
| final ExecutorService es = Executors.newFixedThreadPool(2); | ||
| es.submit(new SubmTask(WRITE)); | ||
| es.submit(new SubmTask(READ)); | ||
| es.awaitTermination(10, TimeUnit.SECONDS); | ||
| es.shutdownNow(); | ||
| final double writes = resultCounters[WRITE].sum(); | ||
| final long reads = resultCounters[READ].sum(); | ||
| assertEquals(80/20, writes / reads, 0.01); | ||
| System.out.println("Write rate: " + writes / 10 + " Hz, read rate: " + reads / 10 + " Hz"); | ||
| } | ||
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| private final class BatchSubmTask | ||
| implements Runnable { | ||
| private final int origin; | ||
| public BatchSubmTask(final int origin) { | ||
| this.origin = origin; | ||
| } | ||
| @Override | ||
| public final void run() { | ||
| int n; | ||
| while(true) { | ||
| n = wt.tryAcquire(origin, 128); | ||
| if(n > 0) { | ||
| resultCounters[origin].add(n); | ||
| } else { | ||
| LockSupport.parkNanos(1); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| @Test | ||
| public void testRequestBatchApprovalFor() | ||
| throws Exception { | ||
| final ExecutorService es = Executors.newFixedThreadPool(2); | ||
| es.submit(new BatchSubmTask(WRITE)); | ||
| es.submit(new BatchSubmTask(READ)); | ||
| es.awaitTermination(10, TimeUnit.SECONDS); | ||
| es.shutdownNow(); | ||
| final double writes = resultCounters[WRITE].sum(); | ||
| final long reads = resultCounters[READ].sum(); | ||
| assertEquals(80/20, writes / reads, 0.01); | ||
| System.out.println("Write rate: " + writes / 10 + " Hz, read rate: " + reads / 10 + " Hz"); | ||
| } | ||
| } |