'Busy waiting' presentation slideshows

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??? ??????. ??? http://www.ywdeng.idv.tw. Processes and Threads ??. ?? processes ??? threads ????? interprocess communication ?? IPC ??? ?? scheduling. ?? processes. Pseudoparallelism ???? CPU ?????????? ??????????? ???? Parallel processing ??? CPU ????????????????????????

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Processes and Threads

Processes and Threads. 2.1 Processes 2.2 Threads 2.3 Interprocess communication 2.4 Classical IPC problems 2.5 Scheduling. Chapter 2. Agenda. 2.1 Processes 2.2 Threads 2.3 Interprocess communication 2.4 Classical IPC problems 2.5 Scheduling. Process.

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??? 6: ??????? ?????? ?? ( Process Synchronization )

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Chapter 6: Process Synchronization

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Chapter 6: Process Synchronization

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Chapter 6: Process Synchronization

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Interprocess Communication

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???????????? Practical System Software

???????????? Practical System Software. ???? (Yutaka Ishikawa) ???????????????????. Schedule. Oct. 6 Introduction Oct. 13 Linux and Windows Basic Architecture Oct. 20 Lab Experiment 1 Setting up and Introducing the WRK environment Oct. 27 Scheduler Nov. 10 Lab Experiment 2

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Chapter 5: Process Synchronization

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Donghyun (David) Kim

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Process Synchronization

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Operating Systems CSE 411

Operating Systems CSE 411. CPU Management Oct. 9 2006 - Lecture 13 Instructor: Bhuvan Urgaonkar. CPU Management. Last class Synchronization problem in concurrent programs Cause: Concurrent access to shared data Solution: Protect shared data using Critical Sections

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Synchronisation Primitives

Synchronisation Primitives. Hardware Approach modifying a shared variable must be made an indivisible operation - atomic test-and-set test-and-set (int lock) { int temp; temp = lock; lock = 1; return temp; } mutual exclusion achieved by:

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Interprocess Communication

Interprocess Communication. Today Race condition & critical regions Mutual exclusion with busy waiting Sleep and wakeup Semaphores and monitors Classical IPC problems Next time Deadlocks. Cooperating processes. Cooperating processes need to communicate

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COT 4600 Operating Systems Fall 2009

COT 4600 Operating Systems Fall 2009. Dan C. Marinescu Office: HEC 439 B Office hours: Tu-Th 3:00-4:00 PM. Lecture 20. Last time: Sharing a processor among multiple threads Implementation of the YIELD Creating and terminating threads Today: Preemptive scheduling

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Lecture 6: Inter-process Communication and Synchronization

Lecture 6: Inter-process Communication and Synchronization. Contents. Where is the problem Race Condition and Critical Section Possible Solutions Semaphores Deadlocks Classical Synchronization Tasks Monitors Examples. Background.

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Concurrent Programming

Concurrent Programming. Introducing the principles of reentrancy, mutual exclusion and thread-synchronication. Advantages of multithreading.

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Introduction to Queueing and Simulation

Introduction to Queueing and Simulation. Kingshuk Roy Choudhury Statistics Department UCC. Examples of queues. `That's the way the whole thing started, Silly but it's true, Thinking of a sweet romance Beginning in a queue." --G. Gouldman, ``Bus Stop," The Hollies.

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Concurrent Threads

Initially v=0. Thread 1: for (i=0; i<10; i++) v = v+1;. Thread 2: for (i=0; i<10; i++) v = v-1;. Concurrent Threads. What are the possible values of v at the end?. Mutual Exclusion so far. Four conditions to provide mutual exclusion

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