307 public void clear() {
308 throw new UnsupportedOperationException("clear");
309 }
310
311 }
312
313 /**
314 * A ThreadFactory for InnocuousThreads.
315 * The factory is a singleton.
316 */
317 static final class InnocuousThreadFactory implements ThreadFactory {
318 final static ThreadFactory factory = new InnocuousThreadFactory();
319
320 static ThreadFactory factory() {
321 return factory;
322 }
323
324 final AtomicInteger cleanerThreadNumber = new AtomicInteger();
325
326 public Thread newThread(Runnable r) {
327 return AccessController.doPrivileged(new PrivilegedAction<Thread>() {
328 @Override
329 public Thread run() {
330 Thread t = new InnocuousThread(r);
331 t.setPriority(Thread.MAX_PRIORITY - 2);
332 t.setName("Cleaner-" + cleanerThreadNumber.getAndIncrement());
333 return t;
334 }
335 });
336 }
337 }
338
339 /**
340 * A PhantomCleanable implementation for tracking the Cleaner itself.
341 */
342 static final class CleanerCleanable extends PhantomCleanable<Cleaner> {
343 CleanerCleanable(Cleaner cleaner) {
344 super(cleaner, cleaner);
345 }
346
347 @Override
348 protected void performCleanup() {
349 // no action
350 }
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307 public void clear() {
308 throw new UnsupportedOperationException("clear");
309 }
310
311 }
312
313 /**
314 * A ThreadFactory for InnocuousThreads.
315 * The factory is a singleton.
316 */
317 static final class InnocuousThreadFactory implements ThreadFactory {
318 final static ThreadFactory factory = new InnocuousThreadFactory();
319
320 static ThreadFactory factory() {
321 return factory;
322 }
323
324 final AtomicInteger cleanerThreadNumber = new AtomicInteger();
325
326 public Thread newThread(Runnable r) {
327 return AccessController.doPrivileged(new PrivilegedAction<>() {
328 @Override
329 public Thread run() {
330 Thread t = InnocuousThread.newThread(r);
331 t.setPriority(Thread.MAX_PRIORITY - 2);
332 t.setName("Cleaner-" + cleanerThreadNumber.getAndIncrement());
333 return t;
334 }
335 });
336 }
337 }
338
339 /**
340 * A PhantomCleanable implementation for tracking the Cleaner itself.
341 */
342 static final class CleanerCleanable extends PhantomCleanable<Cleaner> {
343 CleanerCleanable(Cleaner cleaner) {
344 super(cleaner, cleaner);
345 }
346
347 @Override
348 protected void performCleanup() {
349 // no action
350 }
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