Shulou(Shulou.com)06/01 Report--

This article introduces the relevant knowledge of "how to achieve thread synchronization in Qt". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The raising of a question

Thread-safe data classes can provide a convenient means to exchange data between threads, but this method does not coordinate the actions of the two threads, as can be seen from the output:

As can be seen from the output, the data exchange is either successful or impossible at all. This is the result of no synchronization between threads. Solving this problem requires thread synchronization.

Sample code

In this example, two mutexes are defined, dataReady and bufferReady.

Void WriteData (int I

QMutex& dataReady

QMutex& bufferReady)

{

BufferReady.lock ()

Cout

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