This example shows how to run a function in the background usingparfeval和Backgroundgool.。在后台运行函数时，您可以同时运行其他MATLAB代码。

Useparfeval运行该功能魔法(3)和retrieve one output. SpecifyBackgroundgool.作为在后台运行函数的第一个参数。当你使用时parfeval，你创造一个未来目的。

f = parfeval(backgroundPool,@magic,1,3);

To retrieve the output from the background, usefetchOutputs。MATLAB returns the output once the execution of魔法is complete.

fetchOutputs(f)

ans =3×38 1 6 3 5 7 4 9 2

This example shows how to stop a MATLAB function that you are running in the background. When you useparfeval跑步a function in the background, MATLAB immediately returns a未来目的。Long-running functions can block other functions from running in the background. To stop the function from running, you must use thecancelfunction instead of selectingLive Editor>Run > Stop。

Useparfeval跑步pause(Inf)without retrieving any outputs. SpecifyBackgroundgool.作为在后台运行函数的第一个参数。当你使用时parfeval，你创造一个未来目的。

f = parfeval(backgroundPool,@pause,0,Inf);

Check the state of the未来目的。

F.State.

ans = 'running'

当你运行时parfeval, you schedule a function to run in the background. When the background pool has insufficient resources to run the function, the未来is in the'queued'状态。当函数由后台池运行时，未来is in the'running'状态。

To stop the function from running in the background, cancel the未来目的。

取消（f）f.state

ans = 'finished'

该功能现在在'完成的'状态。