Dispatcher module in Operating System

The dispatcher module is a component of the operating system that is responsible for giving control of the CPU to the process selected by the short-term scheduler. It is a critical component of the operating system that manages the execution of processes and ensures that the CPU is utilized efficiently.

The dispatcher module performs the following functions:

1. Context Switching: It saves the context of the currently executing process and restores the context of the selected process.

2. Process State Transition: It changes the state of the process from running to ready, waiting, or terminated based on the events.

3. Resource Allocation: It allocates system resources like memory, I/O devices, etc. to the selected process.

4. Process Synchronization: It ensures that the processes do not interfere with each other and use the shared resources efficiently.

5. Interrupt Handling: It handles the interrupts generated by the hardware devices and the software.

The dispatcher module works closely with the scheduler modules of the operating system to ensure that the processes are executed efficiently. The scheduler module selects the process to be executed from the ready queue, and the dispatcher module gives control of the CPU to the selected process.

In summary, the dispatcher module is a critical component of the operating system that manages the execution of processes and ensures that the CPU is utilized efficiently. It works closely with the scheduler module to select the process to be executed and gives control of the CPU to the selected process.