CODEWITHSUNDEEP
c++windowsprocess
EternalWind
EternalWind

Reputation: 137

How to guarantee some code to be executed when the process exits or gets killed in c++?

Could anyone tell me how to ensure some code in my program gets executed when its process exits or gets killed?

The destroyer only gets called when it exits normally. But I want my code get executed when it's killed by a system shutdown or task manager.

The platform is Windows and I don't mind using platform specific code if it's needed.

Upvotes: 1

Views: 400

Answers (3)

Ed Heal
Ed Heal

Reputation: 59997

Assuming that the program is crashing in a more-or-less control way perhaps atexit is the best bet

Upvotes: 1

StuartLC
StuartLC

Reputation: 107247

Ending a task from Task Manager or from a Windows shutdown will both give the process a chance to shutdown gracefully by sending messages such as WM_CLOSE, which you can use to close down your process gracefully. However, as per @immibis answer, there are scenarios where this cannot be guaranteed.

Upvotes: 1

Criticize SE actions means ban
Criticize SE actions means ban

Reputation: 58868

You can't. What if the user pulls out the power cord?

Upvotes: 5

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