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safe semaphore.release in finally block

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IgorNB 2019-10-02 19:55:06 +03:00 committed by GitHub
parent f3537acf6b
commit efb631f017
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1 changed files with 5 additions and 2 deletions
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7
core-java-modules/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/semaphore/SemaPhoreDemo.java
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@ -11,9 +11,12 @@ public class SemaPhoreDemo {
System.out.println("Available permit : " + semaphore.availablePermits());
System.out.println("Number of threads waiting to acquire: " + semaphore.getQueueLength());
if (semaphore.tryAcquire()) {
if (semaphore.tryAcquire())
try {
// perform some critical operations
semaphore.release();
} finally {
semaphore.release();
}
}
}