blockingqueue

(please read UPDATE 3 at the end)I'm developing an app that continually works with the sensors of device, works with Accelerometer and Magnetic sensors to retrieve the orientation of device(the purpose is mentioned here ). in other words, my app needs to know the orientation of device in Real-time(however this is never possible, so as fast as possible instead, but really as fast as possible !). as mentioned in professional Android 4 Application Development by Reto Meier : The accelerometers can update hundreds of times a second... I must not lose any data that sensors report and I also want to

What scenarios is it better to use an ArrayBlockingQueue and when is it better to use a LinkedBlockingQueue? If LinkedBlockingQueue default capacity is equal to MAX Integer, is it really helpful to use it as BlockingQueue with default capacity? ArrayBlockingQueue is backed by an array that size will never change after creation. Setting the capacity to Integer.MAX_VALUE would create a big array with high costs in space. ArrayBlockingQueue is always bounded. LinkedBlockingQueue creates nodes dynamically until the capacity is reached. This is by default Integer.MAX_VALUE . Using such a big

When to prefer LinkedBlockingQueue over ArrayBlockingQueue ? Which data structure to use among LinkedBlockingQueue and ArrayBlockingQueue when: You want an efficient read and write should have lesser memory footprints Although there is a similar question but it does not highlight the fact that which should be preferred? Links: Java: ArrayBlockingQueue vs. LinkedBlockingQueue What is the Difference between ArrayBlockingQueue and LinkedBlockingQueue Boris the Spider has already outlined the most visible difference between ArrayBlockingQueue and LinkedBlockingQueue - the former is always bounded,

I have this piece of code. A LinkedBlockingQueue should only throw an Exception if interrupted while waiting to add to the queue. But this queue is unbounded so it should add asap. Why does my shutdown methode throw an InterruptedException ? private final LinkedBlockingQueue<Message> messages= new LinkedBlockingQueue<Message>(); public void run(){ LinkedList<Message> messages = new LinkedList<Message>(); while (true){ try{ messages.clear(); messages.add(this.messages.take()); this.messages.drainTo(messages); for (Message message:messages){ if(message.isPoison())return; doSomething(message); }

本例介绍一个特殊的队列:BlockingQueue,如果BlockQueue是空的,从BlockingQueue取东西的操作将会被阻断进入等待状态,直到BlockingQueue进了东西才会被唤醒.同样,如果BlockingQueue是满的,任何试图往里存东西的操作也会被阻断进入等待状态,直到BlockingQueue里有空间才会被唤醒继续操作. 使用BlockingQueue的关键技术点如下: 1.BlockingQueue定义的常用方法如下: 1)add(anObject):把anObject加到BlockingQueue里,即如果BlockingQueue可以容纳,则返回true,否则招聘异常 2)offer(anObject):表示如果可能的话,将anObject加到BlockingQueue里,即如果BlockingQueue可以容纳,则返回true,否则返回false. 3)put(anObject):把anObject加到BlockingQueue里,如果BlockQueue没有空间,则调用此方法的线程被阻断直到BlockingQueue里面有空间再继续. 4)poll(time):取走BlockingQueue里排在首位的对象,若不能立即取出,则可以等time参数规定的时间,取不到时返回null 5)take():取走BlockingQueue里排在首位的对象

本例再次实现前面介绍的篮子程序，不过这个篮子中最多能放得苹果数不是1，可以随意指定。当篮子满时，生产者进入等待状态，当篮子空时，消费者等待。 BlockingQueue定义的常用方法如下： add(anObject)：把anObject加到BlockingQueue里，如果BlockingQueue可以容纳，则返回true，否则抛出异常。 offer(anObject)：表示如果可能的话，将anObject加到BlockingQueue里，即如果BlockingQueue可以容纳，则返回true，否则返回false。 put(anObject)：把anObject加到BlockingQueue里，如果BlockingQueue没有空间，则调用此方法的线程被阻断直到BlockingQueue里有空间再继续。 poll(time)：取走BlockingQueue里排在首位的对象，若不能立即取出，则可以等time参数规定的时间，取不到时返回null。 take()：取走BlockingQueue里排在首位的对象，若BlockingQueue为空，阻断进入等待状态直到BlockingQueue有新的对象被加入为止。 BlockingQueue有四个具体的实现类，根据不同需求，选择不同的实现类： ArrayBlockingQueue：规定大小的BlockingQueue

I have a blocking queue which keep getting messages through some app, now In asp.net app I tried to consume the queue and write the output into CSV/JSON file. Here I want to hold messages up to 1MB which receive from blocking queue and then write it out, now again hold data for 1MB and write again...so on. In below code, I'm using system.reactive buffer and can hold number of observable 's and write to JSON, but Is there any way on size of observable 's? class Program { private static readonly BlockingCollection<Message> MessagesBlockingCollection = new BlockingCollection<Message>(); private

I have some issues with MediaCode. I have 3 components; Decoder, Downloader and Render. And Simple FragmentStreamVideo that initialize the 'SurfaceView' and the 'Downloader'. The other components like the Render and Decoder are initialized in the SurfaceView. Then, a syncronize is done between the Decoder and the Dowloader, implemented by BlockingQueue<String> queue where String = Filename ( Each frame has its file ). Another syncronize between Decode and Render is done by the standard ByteBuffer as stated in documentation. Find below my piece of code. Would be very grateful if you can help.