Counting semaphores

Advanced Operating Systems - Lecture 10: Locks. This lecture will cover the following: concurrency examples (cont’d from previous lecture); locks; implementing locks with disabling interrupts; implementing locks with busy waiting; implementing locks with test and set like low-level hardware instructions; semaphores—Introduction and definition;...

19p haoasakura 30-05-2022 16 3   Download

Lecture Operating systems: Lesson 22 - Dr. Syed Mansoor Sarwar. The main topics covered in this lesson include: semaphores based solutions for the critical section problem, deadlock and starvation, binary and counting semaphores, synchronization tool, n-processes critical section problem,...

15p youzhangjing_1909 28-04-2022 16 4   Download

Lecture Operating systems: Lesson 23 - Dr. Syed Mansoor Sarwar. The main topics covered in this lesson include: busy waiting, new definition of semaphore, process synchronization, deadlock and starvation, binary and counting semaphores, semaphore implementation, problems with semaphores,...

24p youzhangjing_1909 28-04-2022 13 3   Download

Lecture Operating systems: Lesson 24 - Dr. Syed Mansoor Sarwar. The main topics covered in this lesson include: types of semaphores, counting semaphores, classical synchronization problems, bounded buffer problem, readers and writers problem, dining philosophers problem,...

29p youzhangjing_1909 28-04-2022 8 3   Download

Process Synchronization Background The Critical-Section Problem Peterson’s Solution Synchronization Hardware Semaphores Classic Problems of Synchronization Monitors Synchronization Examples Atomic Transactions Silberschatz, Galvin and Gagne ©2005 .Background Concurrent access to shared data may result in data inconsistency Maintaining data consistency requires mechanisms to ensure the orderly execution of cooperating processes Suppose that we wanted to provide a solution to the consumer-producer problem that fills all the buffers.

63p perpan 02-09-2012 80 8   Download