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Difference between thread and process

2022-06-22 06:17:00 【Kuxiaoya】

The difference between thread and process ：

Threads 、 process , If you can't use one sentence Technology , Not solid ！

process ： A program ,QQ.exe Music.exe A collection of programs ;

A process can often contain multiple threads , At least one ！

Java There are several threads by default ？2 individual Namely ： main、GC

Threads ： Started a process Typora, Write , Save automatically （ The thread is responsible for ）

about Java for ：Thread、Runnable、Callable

Java Is it really possible to start threads ？ Can't drive

Concurrent 、 The difference between parallelism ：

Concurrent programming ： Concurrent 、 parallel

Concurrent （ Multithreading the same resource ）

CPU A nucleus , Simulate multiple threads , Fast alternation

parallel （ Many people walk together ）

CPU Multicore , Multiple threads can execute at the same time

How to view how many processors your computer has （ obtain CPU Check the number ）：

The first one is ：

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The second kind ：

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The third kind of ：

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The nature of concurrent programming ： make the best of CPU Resources for

All companies value it ！

Threads have several States

public enum State {
    
    // Freshmen 
    NEW,

    // function 
    RUNNABLE,

    // Blocking 
    BLOCKED,

    // wait for , Dead, etc 
    WAITING,

    // Overtime waiting 
    TIMED_WAITING,

    // End 
    TERMINATED;
}