Multithreading/Multitas king. Task Parallel Library. Patterns презентация

Multithreading/Multitasking. Task Parallel Library. Patterns. by Oleksandr Kravchuk, JR .NET Developer

What is the Multithreading? An ability that allows you to run several sections of code simultaneously.

>So, why does modern OS supports threads?

On an Operating System level

Thread in numbers Kernel State (Kernel Object) 700 bytes for x86 1240 bytes for x64 Thread environment block 1 memory page (4 Kb) User-mode stack 1+ Mb Kernel-mode stack 12 Kb for x86 24 Kb for x64

Hardware trends CPU development: Single-core Multi-socket motherboards Single-core with Hyper-threading Multi-core Multi-core with Hyper-threading

Context switches

Process and Thread Priority Relations

Thread usage example.

Briefly about Thread class

Producer/Consumer Pattern

P/C Pattern implementation

CLR ThreadPool

How the Thread Pool Manages Its Threads?

Thread Pool usage example.

Tasks concept

Tasks states

Waiting

Continuations

Tasks are very flexible

The Parallel class

Tasks interaction in Parallel

Not every algorithm could be parallel

PLINQ

Parallel and PLINQ usage example.

Allows you to perform a Periodic Compute-Bound Operation.

Async/Await

Async/Await example.

Asynchronous Programming Patterns

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