Winston Li
39 lines
1.0 KiB
Java
39 lines
1.0 KiB
Java
package uk.ac.ic.wlgitbridge.writelatex;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.concurrent.locks.Lock;
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import java.util.concurrent.locks.ReentrantLock;
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/**
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* Created by Winston on 20/11/14.
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*/
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public class ProjectLock {
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private final Map<String, Lock> projectLocks;
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public ProjectLock() {
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projectLocks = new HashMap<String, Lock>();
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}
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public void lockForProject(String projectName) {
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System.out.println("Locking for: " + Thread.currentThread().getId());
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getLockForProjectName(projectName).lock();
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}
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public void unlockForProject(String projectName) {
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System.out.println("Unlocking for: " + Thread.currentThread().getId());
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getLockForProjectName(projectName).unlock();
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}
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private synchronized Lock getLockForProjectName(String projectName) {
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Lock lock = projectLocks.get(projectName);
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if (lock == null) {
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lock = new ReentrantLock();
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projectLocks.put(projectName, lock);
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}
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return lock;
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}
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}
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