Python3 asynchronous programming processes and Threads-1

Python3 Asynchronous programming processes and threads-1

First, understanding inter-process communication

• Inter-process communication

• Process

• Thread

• Thread vs Process

• IO model

• Concurrency vs Parallel

• Asynchronous vs Synchronization

  
  

Two, multi-threading and multi-process usage

• Compute-intensive vs I/O-intensive

• GIL

• Multithreading

• Multi-process

Third, the benefits and usage of the co-process

• Co-process

• Yield

• Yield from

Iv. inter-process Communication-IPC 01

• Pipelines: Nameless pipes and Named Pipes (FIFO)

• Message Queuing

• Signal Volume

• Shared storage

• Socket

• Streams

Related definitions:

Pipeline:

Named pipes:

Message Queuing:

Signal Volume:

Shared Memory:

Motoko Operation:

V. Characteristics of the process

• Dynamic nature

• Concurrency of

• Independence

• of Asynchrony

Vi. Status of the process

• Running running takes up CPU is running

• Ready to wait for CPU

• Blocking blocked temporarily does not have operating conditions, even if the CPU is idle

  Related definitions:

  Process Control BLOCK:

  
  

several Process Control operations in UNIX systems:

Thread:

Sharing between Threads:

Thread-Independent Information:

Creation of Threads:

Vii. understanding Inter-process Communication 02

I/O model

• Block type

• Non-blocking

• I/O multiplexing

• Signal-driven

• asynchronous I/O

Related definitions:

Two phases of the I/O operation:

Blocking I/O:

Non-blocking I/O:

I/O multiplexing:

Signal-driven:

asynchronous I/O:

Concurrency and parallelism:

Asynchronous and synchronous:

Asynchronous implementations:

To handle multitasking operations:

• Multi-process/multi-threaded

• I/O model

• Co-process

multithreaded, multi-process implementation mode: Master worker mode

Master assigning tasks Multi-process disadvantage: Creating a process resource requires multiple Frok () function multithreading disadvantage: A thread problem, the entire hanging off

Python3 asynchronous programming processes and Threads-1