public boolean More ...offer(E e) {
354        if (e == null) throw new NullPointerException();
355        final AtomicInteger count = this.count;
356        if (count.get() == capacity)
357            return false;
358        int c = -1;
359        final ReentrantLock putLock = this.putLock;
360        putLock.lock();
361        try {
362            if (count.get() < capacity) {
363                insert(e);
364                c = count.getAndIncrement();
365                if (c + 1 < capacity)
366                    notFull.signal();
367            }
368        } finally {
369            putLock.unlock();
370        }
371        if (c == 0)
372            signalNotEmpty();
373        return c >= 0;
374    }

105    private final AtomicInteger count = new AtomicInteger(0);