Explain threads in details?, Operating System

What are threads?

A thread - sometimes called as an implementation context or a lightweight process - is a single sequential flow of control within a program. We use threads to separate tasks. While we run one of the applets it creates a thread that performs the operation. Every thread is a sequential flow of control within the same program (the browser). Every operation runs independently from the others but at the same time.

A thread is alike to the sequential programs described previously. A single thread as well has a beginning and a sequence and an end. At any given point of time during the runtime of the thread there is a single point of execution. Though, a thread itself isn't a program; a thread can't run on its own. Relatively it runs within a program.

A thread is the single sequential flow of control within a program. Threads perform two or more tasks at once. The real excitement surrounding threads isn't about a single sequential thread. Relatively, it is about the use of multiple threads running at the same time and performing different tasks in a single program.

A Web browser is an instance of a multithreaded application. Within a usual browser, you are able to scroll a page while it is downloading an image or an applet, play sound and animation concurrently and print a page in the background while you download a new page or watch three sorting algorithms race to the finish.

Some texts call a thread as a lightweight process. A thread is alike to a real process in that both have a single sequential flow of control. Though, a thread is considered as a lightweight for the reason that it runs within the context of a full-blown program and takes advantage of the resources allocated for that program and the program's environment.

The same as a sequential flow of control, a thread ought to carve out some of its own resources within a running program. For instance, a thread should have its own execution stack and program counter. The code running inside the thread works merely within that context. Some other texts use implementation context as a synonym for thread.


Result of calling the start method on a Thread object:

 

1. The thread goes into the Runnable position and the run method is invoked.

The two ways you are able to provide the implementation for a thread's run method:

 

1. Create a Thread subclass that dominates the run method.

2. Write a class that executes the Runnable interface and the run method

Posted Date: 6/22/2013 7:06:14 AM | Location : United States







Related Discussions:- Explain threads in details?, Assignment Help, Ask Question on Explain threads in details?, Get Answer, Expert's Help, Explain threads in details? Discussions

Write discussion on Explain threads in details?
Your posts are moderated
Related Questions
Logical File System Responsible for providing the before discussed interface to the user including: File access. Directory operations. Security and protection.

Define properties of Distributed operating system Distributed:- This system distributes computation among several physical processors. The processors do not share memory or a

Prepare Gantt Charts and Determine the Average Waiting Time 1. Classify the interaction among the processes on the basis if degree to which they are aware of each  other's exi

Allocators can also be used to avoid problems with unsafe languages. C and C++ are pervasive, with huge amounts of existing code. They are also memory-unsafe languages, in that the

Q. Benefits and Drawbacks of Batch System? Benefits of Batch System: Move much of the work of operator to computer. Increased performance as it was possible for j

what is network operating? explain about it design issues?

List operations to be performed on directories. Search for a file, delete a file, create a file, list a directory, rename a file, and traverse the file system.

Q. Define the difference among pre-emptive and non pre-emptive scheduling. Answer: Pre-emptive scheduling permits a process to be interrupted in the midst of its execution ta

Worst Fit Algorithm Here we obtain the largest space available for the smallest. Therefore after that process entered there will be much more space remaining. In this space we

Basic File System Uses the specific device driver. Deals with blocks of data that are exchanged with the physical device. Concerned with the placement of blocks on