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Merge pull request #7927 from IgorNB/patch-1

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SemaPhoreDemo double acquire fix
This commit is contained in:
Loredana Crusoveanu
2019-10-10 20:48:16 +03:00
committed by GitHub
parent 0b6f07b8ba 7f51ae04c0
commit fdf812510f
1 changed files with 4 additions and 2 deletions
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6
core-java-modules/core-java-concurrency-basic/src/main/java/com/baeldung/concurrent/semaphore/SemaPhoreDemo.java
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@@ -12,9 +12,11 @@ public class SemaPhoreDemo {
System.out.println("Number of threads waiting to acquire: " + semaphore.getQueueLength()); System.out.println("Number of threads waiting to acquire: " + semaphore.getQueueLength());
if (semaphore.tryAcquire()) { if (semaphore.tryAcquire()) {
semaphore.acquire(); try {
// perform some critical operations // perform some critical operations
semaphore.release(); } finally {
semaphore.release();
}
} }
} }