operating system操作系统-ch06-process synchronization- 6.3 6.4 6.5 6.6 Consumer while(true){while(count==0);//donothing nextConsumed=buffer[out];out=(out+1)%BUFFER_SIZE;count--;/*consumetheiteminnextConsumed} Count?!?!6.7 RaceCondition count++couldbeimplementedas register1=countregister1...
1、Chapter 6: Process Synchronization,Chapter Objectives,To introduce the critical-section problem, whose solutions can be used to ensure the consistency of shared data. To present both software and hardware solutions of the critical-section problem. To introduce the concept of atomic transaction and...
OperatingSystem总结 授课章节 •Chapter5Threads•Chapter6CPUScheduling•Chapter7ProcessSynchronization•Chapter8Deadlocks•Chapter9MemoryManagement•Chapter10VirtualMemory•文件管理•设备管理 2020/7/3 5Threads •什么是线程•线程与进程的区别和联系•使用线程的优点 2020/7/3 6CPUScheduling •...
const void *shmaddr, int shmflg);int* data =shmat( shmid,NULL,0);/* Notice that 'void *' means returning a pointer which can be used to point to any type of data *//* shmat() attaches the System V shared memory segment identi‐ ...
synchronization of the activities of multiple processes allocation of processor time to processes. 2. What are three contexts in which concurrency arises? 并发出现的三种情况 Multiple applications,structured applications,operating-system structure. 3. What is the basic requirement for the execution of conc...
changes the hardware context to match the next process to run restore the state of next process and resume its executionthe context needs memory space which can be divided as:text data stack region Except for the use of process, thread is also a part of operating system. So what is the ...
And we have designed five practical projects which including designs and implementation of processor management, process synchronization and communication, memory management, file system and devices management corresponding program. Because of "Operating System" is MOOC course of School of Software, teachers...
This course spans the following topics: processes, threads, inter-process communication, synchronization (critical regions, semaphores, mutex, deadlocks), scheduling, memory management, i/o systems, and file systems. This course covers the following topics in detail: Operating system definition, simple...
An operating system typically provides the following services: 1. Hardware management (interrupt handling, timer management) 2. Interprocess synchronization and communications 3. Process management 4. Resource allocation (scheduling, dispatching) 5. Storage management and access (I/O) 6. Memory ...
SystemTiming••Process Scheduling & Synchronization Examples of Operating SystemsRTOS – Real-Time Operating SystemSingle-user, Single-task: example PalmOSSingle-user, Multi-task: MS Windows and MacOS••••Multi-user, Multi-task: UNIX3Real-Time Operating Systems Operating systems come in...