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So i have a helper process written in C++ and I open it, feed it arguments, and it feeds my program back information through the standardoutput stream.
PS. I don’t have the source for the helper process exe.
If my application were to be terminated from the task manager, or for some reason crash, how could I ensure that my helper exe is closed? Is this possible? Would I need an external file?
Use Job Objects to manage groups of processes. In this case you want to create a job object using CreateJobObject, use SetInformationJobObject to set the JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE flag, and assign the helper process to the job using AssignProcessToJobObject. Don’t close the handle to the job object unless you want to kill the helper process. When your process terminates (through any means), the handle will be closed and your helper process will be killed.