在C++中同时（同时）运行两个function

Question

I am programming a robot with QT (C++). I have a function move_gripper() which closes or opens the gripper (it depends on the parameter) and a function relative_motion() which lets the end effector move downwards. What I want to do is to close the gripper ( calling the move_gripper() function ) while moving the robot downwards ( calling the relative_motion() function ) The execution time of the functions are not the same ( let's say move_gripper() lasts 2 seconds while relative_motions() lasts 3 seconds ). I want the two functions to start the execution at the same time.

Answer 1

In computer theory there is no real "simultaneously". The common approach is to use threads. Those threads are executed, halted, switched just so fast it looks like they are executed simultaneously.

But still there are some things which can be done wrong which make the usage of threads even worse than not to use them.

So I would say first get some knowledge about threads (see the link: https://doc.qt.io/qt-5/qthread.html ) and create 2 threads, one for each channel and do your work in there.