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fixed bug #929: close async service before the main thread finishes (#931)

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Zhang WH 2019-09-30 23:32:29 +08:00 committed by Ilkka Seppälä
parent 06fa92af2c
commit 3d62e02891
2 changed files with 18 additions and 0 deletions
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2
half-sync-half-async/src/main/java/com/iluwatar/halfsynchalfasync/App.java
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@ -94,6 +94,8 @@ public class App {
service.execute(new ArithmeticSumTask(500)); service.execute(new ArithmeticSumTask(500));
service.execute(new ArithmeticSumTask(2000)); service.execute(new ArithmeticSumTask(2000));
service.execute(new ArithmeticSumTask(1)); service.execute(new ArithmeticSumTask(1));
service.close();
} }
/** /**

16
half-sync-half-async/src/main/java/com/iluwatar/halfsynchalfasync/AsynchronousService.java
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@ -22,6 +22,9 @@
*/ */
package com.iluwatar.halfsynchalfasync; package com.iluwatar.halfsynchalfasync;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.concurrent.BlockingQueue; import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ExecutionException; import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService; import java.util.concurrent.ExecutorService;
@ -38,6 +41,7 @@ import java.util.concurrent.TimeUnit;
*/ */
public class AsynchronousService { public class AsynchronousService {
private static final Logger LOGGER = LoggerFactory.getLogger(AsynchronousService.class);
/* /*
* This represents the queuing layer as well as synchronous layer of the pattern. The thread pool * This represents the queuing layer as well as synchronous layer of the pattern. The thread pool
* contains worker threads which execute the tasks in blocking/synchronous manner. Long running * contains worker threads which execute the tasks in blocking/synchronous manner. Long running
@ -95,4 +99,16 @@ public class AsynchronousService {
} }
}); });
} }
/**
* Stops the pool of workers. This is a blocking call to wait for all tasks to be completed.
*/
public void close() {
service.shutdown();
try {
service.awaitTermination(10, TimeUnit.SECONDS);
} catch (InterruptedException ie) {
LOGGER.error("Error waiting for executor service shutdown!");
}
}
} }