'Lock acquire' presentation slideshows

The Transactional Memory / Garbage Collection Analogy

The Transactional Memory / Garbage Collection Analogy. Dan Grossman University of Washington AMD July 26, 2010. Today. Short overview of my history and research agenda The TM/GC Analogy: My perspective on Why high-level languages benefit from transactions

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Inherent limitations facilitate design and verification of concurrent programs

Inherent limitations facilitate design and verification of concurrent programs. Hagit Attiya Technion. Concurrent Programs. Core challenge is synchronization Correct synchronization is hard to get right Efficient synchronization is even harder. Ad-hoc VS Principled

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Atomicity

x. y. acq(this). t=i. i=t+1. rel(this). z. ?. ?. ?. ?. ?. ?. ?. ?. acq(this). x. t=i. y. i=t+1. z. rel(this). ?. ?. ?. ?. ?. ?. ?. ?. acq(this). x. y. t=i. i=t+1. z. rel(this). ?. ?. ?. ?. ?. ?. ?. ?. Atomicity.

453 views • 39 slides

Atomicity

x. y. acq(this). t=i. i=t+1. rel(this). z. ?. ?. ?. ?. ?. ?. ?. ?. acq(this). x. t=i. y. i=t+1. z. rel(this). ?. ?. ?. ?. ?. ?. ?. ?. acq(this). x. y. t=i. i=t+1. z. rel(this). ?. ?. ?. ?. ?. ?. ?. ?. Atomicity.

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Outline for Today

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Lecture Topics: 11/6

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Lecture Topics: 11/6

Lecture Topics: 11/6. More on threads Synchronization problem Too much milk Locks. Processes and Threads. A full process includes numerous things: an address space (defining all the code and data pages) OS resources and accounting information

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Implementing Synchronization

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Implementing Synchronization

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Section 3

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Section 3

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Ivan Marsic Rutgers University

LECTURE 19: Concurrent Programming. Ivan Marsic Rutgers University. Topics. Threads Exclusive Resource Access Exclusion Synchronization Cooperation between Threads Condition Synchronization Concurrent Programming Example. Thread vs. Process.

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Assignment 2 Non-preemptive scheduling

COS 318 - Operating System Fall 2004. Assignment 2 Non-preemptive scheduling. Main things you need to deal with. Process Control Block (PCB) Context Switch procedure System Call mechanism Stacks Synchronization Inline assembly Design review requirements. Process Control Block (PCB).

256 views • 14 slides

Assignment 2 Non-preemptive scheduling

COS 318 - Operating System Fall 2004. Assignment 2 Non-preemptive scheduling. Main things you need to deal with. Process Control Block (PCB) Context Switch procedure System Call mechanism Stacks Synchronization Inline assembly Design review requirements. Process Control Block (PCB).

228 views • 14 slides

Too Much Milk With Locks

Both threads: struct lock l; ... l ock_acquire (&l); if (milk == 0) { buyMilk (); } lock_release (& l);. Too Much Milk With Locks. char buffer[SIZE]; int count = 0; int head = 0, tail = 0; struct lock l; lock_init(&l); void put(char c) { lock_acquire(&l); count++;

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Too Much Milk With Locks

Both threads: struct lock l; ... l ock_acquire (&l); if (milk == 0) { buyMilk (); } lock_release (& l);. Too Much Milk With Locks. char buffer[SIZE]; int count = 0; int head = 0, tail = 0; struct lock l; lock_init(&l); void put(char c) { lock_acquire(&l); count++;

192 views • 10 slides