A process operations can be easily controlled with the help of PCB(Process Control Block). You can consider it as the brain of the process, which contains all the crucial information related to processing like process id, priority, state, and contents CPU register, etc.
What is Thread?
Thread is an execution unit that is part of a process. A process can have multiple threads, all executing at the same time. It is a unit of execution in concurrent programming. A thread is lightweight and can be managed independently by a scheduler. It helps you to improve the application performance using parallelism. Multiple threads share information like data, code, files, etc. We can implement threads in three different ways:
Kernel-level threads User-level threads Hybrid threads
Properties of Process
Here are the important properties of the process:
Creation of each process requires separate system calls for each process. It is an isolated execution entity and does not share data and information. Processes use the IPC(Inter-Process Communication) mechanism for communication that significantly increases the number of system calls. Process management takes more system calls. A process has its stack, heap memory with memory, and data map.
Properties of Thread
Here are important properties of Thread:
Single system call can create more than one thread Threads share data and information. Threads shares instruction, global, and heap regions. However, it has its register and stack. Thread management consumes very few, or no system calls because of communication between threads that can be achieved using shared memory.
Difference between Process and Thread
Here, are the important differences between Process and Thread
What is Multithreading?
Multithreading refers to multiple threads of execution within an operating system. In simple terms, two or more threads of a same process are executing simultaneously.
