Could you please create a ThreadPool.java file to perform thread operations. For this exercise you should create your own implementation of a thread pool. In preparation for thisexercise, you should change the ImageProcessorMT class so that it implements the Runnable interface.Your thread pool will manage threads that run your new ImageProcessorMTs. The thread pool class itselfshould also implement Runnable.The thread pool should offer a constructor that receives the size of the thread pool as a parameter.The thread pool has relatively simple functionality. It should be possible to submit a task(i.e. an ImageProcessorMT) to the thread pool. This does not mean that the task will actually run yet,just that the thread pool is aware of it and keeps it in a waiting list. The number of ImageProcessorMTsthat are added can exceed the number of threads available in the thread pool.It should also be possible to start the thread pool. This means that the thread pool will then run asmany ImageProcessorMTs as it can up to its size. For example, if the thread pool size is 5, but 10ImageProcessorMTs have been added, it can only run 5.When any ImageProcessorMT has terminated, a new one from the waiting list should be started by thethread pool (if one exists). The thread pool should continue to do this until the waiting list is empty, whenit should itself terminate.The thread pool should offer a join() method that causes the calling thread to wait until the thread poolhas terminated.Note that when you change ImageProcessorMT to implement Runnable, its run() method works the sameway as it does in ImageProcessorST: it processes the image and then exits (terminating the thread). Youmight wish to add a boolean and a getter to ImageProcessorMT that signals that the run method hasterminated, hence the result is available, and the thread pool can now run another thread (if the waitinglist was not empty).

Answered: Image /qna-images/answer/02455683-1190-4679-9412-e7b47b4e493d.jpg

For this exercise you should create your own implementation of a thread pool. In preparation for this exercise, you should change the ImageProcessorMT class so that it implements the Runnable interface. Your thread pool will manage threads that run your new ImageProcessorMTs. The thread p0ol class itself should also implement Runnable. The thread pool should offer a constructor that receives the size of the thread pool as a parameter. The thread pool has relatively simple functionality. It should be possible to submit a task (i.e. an ImageProcessorMT) to the thread pool. This does not mean that the task will actually run yet, just that the thread pool is aware of it and keeps it in a waiting list. The number of ImageProcessorMTs that are added can exceed the number of threads available in the thread pool.

For this exercise you should create your own implementation of a thread pool. In preparation for this exercise, you should change the ImageProcessorMT class so that it implements the Runnable interface. Your thread pool will manage threads that run your new ImageProcessorMTs. The thread p0ol class itself should also implement Runnable. The thread pool should offer a constructor that receives the size of the thread pool as a parameter. The thread pool has relatively simple functionality. It should be possible to submit a task (i.e. an ImageProcessorMT) to the thread pool. This does not mean that the task will actually run yet, just that the thread pool is aware of it and keeps it in a waiting list. The number of ImageProcessorMTs that are added can exceed the number of threads available in the thread pool.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Could you please create a ThreadPool.java file to perform thread operations.

For this exercise you should create your own implementation of a thread pool. In preparation for this
exercise, you should change the ImageProcessorMT class so that it implements the Runnable interface.
Your thread pool will manage threads that run your new ImageProcessorMTs. The thread pool class itself
should also implement Runnable.
The thread pool should offer a constructor that receives the size of the thread pool as a parameter.
The thread pool has relatively simple functionality. It should be possible to submit a task
(i.e. an ImageProcessorMT) to the thread pool. This does not mean that the task will actually run yet,
just that the thread pool is aware of it and keeps it in a waiting list. The number of ImageProcessorMTs
that are added can exceed the number of threads available in the thread pool.
It should also be possible to start the thread pool. This means that the thread pool will then run as
many ImageProcessorMTs as it can up to its size. For example, if the thread pool size is 5, but 10
ImageProcessorMTs have been added, it can only run 5.
When any ImageProcessorMT has terminated, a new one from the waiting list should be started by the
thread pool (if one exists). The thread pool should continue to do this until the waiting list is empty, when
it should itself terminate.
The thread pool should offer a join() method that causes the calling thread to wait until the thread pool
has terminated.
Note that when you change ImageProcessorMT to implement Runnable, its run() method works the same
way as it does in ImageProcessorST: it processes the image and then exits (terminating the thread). You
might wish to add a boolean and a getter to ImageProcessorMT that signals that the run method has
terminated, hence the result is available, and the thread pool can now run another thread (if the waiting
list was not empty).

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