public void release() {
// Delete resources allocated
Iterator<Resource> iterator = resources.iterator();
while (iterator.hasNext()) {
Resource resource = iterator.next();
resource.release();
iterator.remove();
}
}
public void run() {
while (true) {
try {
Reference<?> ref = queue.remove();
Resource res = null;
synchronized (ResourceManager.this) {
res = refs.get(ref);
refs.remove(ref);
}
res.release();
ref.clear();
} catch (InterruptedException ex) {
break;
}
}
}
@BeforeClass
public static void initialize() throws InterruptedException {
Runtime rt = Runtime.getRuntime();
rt.gc();
freeMemory_preUse = rt.freeMemory();
ResourceManager rm = new ResourceManager();
for (int i = 0; i < 1000; i++) {
Object key = Integer.toString(i);
keyList.add(key);
resourceList.add(rm.getResource(key));
}
rt.gc();
freeMemory_useRes = rt.freeMemory();
for (int i = 0; i < 1000; i++) {
Object key = keyList.get(i);
Resource res = resourceList.get(i);
res.use(key);
}
for (int i = 0; i < 1000; i++) {
Resource res = resourceList.get(i);
res.release();
}
keyList.clear(); // リソースへの参照をすべて削除
resourceList.clear(); // リソースへの参照をすべて削除
rm.shutdown();
rt.gc();
rm.reaper.join();
rt.gc();
freeMemory_clearRes = rt.freeMemory();
System.out.println("freeMemory_preUse :" + freeMemory_preUse);
System.out.println("freeMemory_useRes :" + freeMemory_useRes);
System.out.println("freeMemory_clearRes:" + freeMemory_clearRes);
}
@Override
public void run() {
String id = Thread.currentThread().getName();
try {
System.out.println(id + " acquiring resource..");
Resource r = SemaphoreTest.getItem();
System.out.println(id + " got resource: " + r);
r.use(id);
// .. more stuff here
r.release();
System.out.println(id + " releasing resource: " + r);
SemaphoreTest.putItem(r);
System.out.println(id + " released");
} catch (InterruptedException ix) {
System.out.println("!! INTERRUPTED");
}
}