Difference between a Thread and a Process?

See my An Introduction to Virtual Memory in Windows. The title is misleading, since it also describes address spaces and processes. There is always a one-for-one correspondence of process and address space.

Threads exist for a process; threads use / share the resources of the process. Resources include memory.

There are also domains, which I don't know much about but I assume they are between a thread and a process in terms of what they are. The thing I do know about them is that they make things really complicated to understand. Traditionally in Windows, a process has one and only on address space and an application has one and only one process. Now domains can exist within processes and each domain is an application and that makes things confusing.

Hi Manoj,

Thread: - A single flow of control in a program is known as thread. This can execute independently in a processing environment and perform an operation. A program can be divided into different part or different sequential flow of control known as multithreaded program.


Process :-is a program in execution.


Thanks