进度条和多线程

问题描述

我有4个线程.在每个线程中，都有一个For循环.每个线程都使用该循环将数据填充到数组中.现在我想根据这四个线程正在做的工作来更新进度条.怎么做?我想放置一个全局变量，但是问题在于每个线程都是随机工作的，并且会随机更新该变量.所以进度条会来回移动.它不会很顺畅.

i have 4 threads. in each thread, there is a For loop. each thread is filling data in an array using that loop. now i want to update a progress bar based on the work these 4 threads are doing. how to do it? i thot of putting a global variable but the problem in that is each thread works randomly and will update that variable randomly. so the progress bar will go back and forth.it wont be smooth.

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