| 1 | package de.uka.ipd.sdq.prototype.framework.strategies; |
| 2 | |
| 3 | import java.util.concurrent.Semaphore; |
| 4 | |
| 5 | import org.apache.log4j.Logger; |
| 6 | |
| 7 | public class PassiveResource { |
| 8 | |
| 9 | private static Logger logger = |
| 10 | Logger.getLogger(PassiveResource.class.getName()); |
| 11 | |
| 12 | private Semaphore semaphore; |
| 13 | private String type; |
| 14 | |
| 15 | public PassiveResource(int capacity, String type){ |
| 16 | this.semaphore = new Semaphore(capacity, true); |
| 17 | this.type = type; |
| 18 | } |
| 19 | |
| 20 | public void acquire(){ |
| 21 | logger.debug("Acquiring "+type); |
| 22 | this.semaphore.acquireUninterruptibly(); |
| 23 | logger.debug(type+" aquired"); |
| 24 | } |
| 25 | |
| 26 | public void release(){ |
| 27 | this.semaphore.release(); |
| 28 | logger.debug(type+" released"); |
| 29 | } |
| 30 | |
| 31 | public String getType() { |
| 32 | return type; |
| 33 | } |
| 34 | |
| 35 | } |