critical section problem.pptx
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The critical section is a code segment where shared variables can be accessed. A race condition occurs when two processes attempt to access the same resource at the same time, which can cause crashes or errors. To solve this, processes must follow the principles of mutual exclusion, progress, and bounded waiting - only one process can be in the critical section at a time, no process is prevented from entering the critical section, and processes do not wait indefinitely. Process synchronization helps maintain consistency by allowing only one process to change shared memory at a time using variables or hardware.
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- 2. What is critical section? The critical section is a code segment where the shared variables can be accessed.
- 3. What is race condition? -They occur when two computer program processes, or threads, attempt to access the same resource at the same time and cause problems in the system. -Race conditions are most commonly associated with Multi threaded programming.
- 6. The result of Race condition The computer crashes or identifies an illegal operation of the program errors reading the old data errors writing the new data
- 8. Solution to the Critical Section Problem •Mutual Exclusion Mutual exclusion implies that only one process can be inside the critical section at any time. If any other processes require the critical section, they must wait until it is free. •Progress Progress means that if a process is not using the critical section, then it should not stop any other process from accessing it. In other words, any process can enter a critical section if it is free. •Bounded Waiting Bounded waiting means that each process must have a limited waiting time. Itt should not wait endlessly to access the critical section.
- 9. Process Synchronization What is Process Synchronization? Processes Synchronization or Synchronization is the way by which processes that share the same memory space are managed in an operating system. Why? It helps maintain the consistency of data by using variables or hardware so that only one process can make changes to the shared memory at a time.