'Mutex lock' diaporamas de présentation

Programming with Shared Memory

Chapter 8. Programming with Shared Memory. Shared memory multiprocessor system Any memory location can be accessible by any of the processors. A single address space exists, meaning that each memory location is given a unique address within a single range of addresses.

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TDC561 Network Programming

TDC561 Network Programming. Week 7: Client/Server Design Alternatives Study Cases: TFTP. Camelia Zlatea, PhD Email: czlatea@cs.depaul.edu.

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Programming Shared Address Space Platforms

Programming Shared Address Space Platforms. Ananth Grama, Anshul Gupta, George Karypis, and Vipin Kumar To accompany the text ``Introduction to Parallel Computing'', Addison Wesley, 2003. Topic Overview. Thread Basics The POSIX Thread API Synchronization Primitives in Pthreads

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Unix System Programming

Unix System Programming. Chung-Ta King Department of Computer Science National Tsing Hua University. Outline. UNIX system programming IPC with shared memory IPC with message passing. Layers of the Unix. ( system calls: entries to kernel; facilities provided by OS). Processes.

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Threads

Threads. Manohara Pallewatta CSIM/SAT. Overview. Concurrency and parallelism Processes and threads Thread creation Bound and Unbound threads Synchronization Mutex locks Condition variables (Example 1: Producer/Consumer problem) Read Write locks Semaphores (Example 2: Linked lists).

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Using Semaphores

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THREAD IMPLEMENTATION

THREAD IMPLEMENTATION. For parallel processing. Steps involved. Creation Creates a thread with a thread id . Detach and Join All threads must be detached or joined with. Termination Analogous to exit. Create a Thread. pthread_create()

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Software Architecture and Larger System Design Issues Lecture 3: Synchronization

Software Architecture and Larger System Design Issues Lecture 3: Synchronization. Topics: Concurrent access to shared objects Thread synchronization Monitors. Outline of course topics. Foundational OO concepts Synthetic concepts Software architecture and larger design issues

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Software Architecture and Larger System Design Issues Lecture 3: Synchronization

Software Architecture and Larger System Design Issues Lecture 3: Synchronization. Topics: Concurrent access to shared objects Thread synchronization Monitors. Outline of course topics. Foundational OO concepts Synthetic concepts Software architecture and larger design issues

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CS252: Systems Programming

CS252: Systems Programming. Ninghui Li Based on Slides by Prof. Gustavo Rodriguez-Rivera Topic 10: Threads and Thread Synchronization. Introduction to Threads. A thread is a path execution By default, a C/C++ program has one thread called "main thread" that starts the main() function.

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CSE 451: Operating Systems

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Inter Process Communication & Timers

Inter Process Communication & Timers. Time.h (page R:Ch9 pp302-320). #include <time.h> time_t time(time_t *calptr); Epoch: 00:00 (midnight), Jan 1, 1970 GMT Day is 86,400 seconds time_t is usually a long If the long is 32 bits, time overflows in 2038 Extensions POSIX:XSI microseconds

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CSE 451: Operating Systems

CSE 451: Operating Systems. Section 8 Linux buffer cache; design principles. Outline. Thread preemption (project 2b) RPC Linux buffer cache Networking design principles. Mutex: no preemption. mutex_lock(lock) if (lock->held == 0) lock->held = 1; else enqueue(

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CS252: Systems Programming

CS252: Systems Programming. Ninghui Li Final Exam Review. Topic 1. Understand pointer usage and arithmetic &, *( p+i ) Understand argument passing behavior (especially those involving pointers) 2d Array implementation

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15-213: How to dBug your (threaded) proxy

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Pthread Programming

Pthread Programming. CIS450 Winter 2003 Professor Jinhua Guo. What are Pthreads?. Historically, hardware vendors have implemented their own proprietary versions of threads. Not portable.

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P2 Miscellany

Dave Eckhardt de0u@andrew.cmu.edu. P2 Miscellany. “Style”. Field names should mean something Even more than variable names Single-letter variable names may be ok It's unclear single-letter field names can be ok Unless you're implementing complex numbers. “Style”. Please don't give us

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Problem Description

Hill Climbing In a Banking Application (PThreads Version) -by Nitin Agarwal Kailash Aurangabadkar Prashant Jain Rashmi Kankaria Nan Zhang. Problem Description. Find a way to distribute k lockboxes amongst n locations so as to get minimum float.

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Synchronizing threads with mutexes

Synchronizing threads with mutexes. IT 325 Operating systems Chapter6 . Synchronizing threads with mutexes. Threads can greatly simplify writing elegant and efficient programs.

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