In computer systems, are signals sent to the CPU to notify it that an event needs immediate attention. When an is received, the CPU stops its current task and jumps to the , which contains the address of the Interrupt Service Routine (ISR) to handle the event. This process is known as Interrupt handling.
is another method used to handle interrupts, where the CPU continuously checks for the status of a device to see if it needs attention. This is done in a , where the CPU iterates through devices to see if any require servicing. However, this method can lead to higher compared to the use of Interrupts.
improve upon the basic Interrupt mechanism by providing a mechanism for devices to communicate their Interrupt Requests directly to the CPU. This reduces the need for Polling and simplifies the interrupt handling process.
in computing refers to the ability of multiple tasks or processes to execute simultaneously. s are lightweight processes that allow for concurrent execution within a single process. While concurrency can improve system performance, it also introduces challenges such as s and s, which may arise when multiple threads access shared resources simultaneously.
