Question: What Does The Operating System Do When You Call A Function?

What are the 4 main functions of an operating system?

Following are some of important functions of an operating System.

  • Memory Management.
  • Processor Management.
  • Device Management.
  • File Management.
  • Security.
  • Control over system performance.
  • Job accounting.
  • Error detecting aids.

What are the 5 main functions of an operating system?

Operating system performs the following functions;

  1. Booting. Booting is a process of starting the computer operating system starts the computer to work.
  2. Memory Management.
  3. Loading and Execution.
  4. Data Security.
  5. Disk Management.
  6. Process Management.
  7. Device Controlling.
  8. Printing Controlling.

What happens during a function call?

Calling a function. Before executing a function, a program pushes all of the parameters for the function onto the stack in the reverse order that they are documented. First it pushes the address of the next instruction, which is the return address, onto the stack.

What is function call in operating system?

After doing this the processor returns to normal execution and continues from where it left off. A system call and a function call are such occasions. A system call is a call to a subroutine built in to the system. A function call is a call to a subroutine within the program itself.