Base types, Collections, Diagnostics, IO, RegEx…
This is another post to quickly cover an question that I saw recently on one of our usergroups...
How do we create a process and "wait" for it begin running for a finite amount of time and if the process is not up and running until then timeout the request? I used the word wait in quotes because what the user really meant was that he makes the request in a separate thread while the application's main thread was still going on with its business. Of course there are at least half a dozen ways to do that but I decide to use the System.Threading.Timer class for this example.
The code below ilustrates this example:
As you can see I have added a call to Console.ReadLine() so that we could see the callback function firing. Another point to note is that we only want it to fire once and to accomplish that we pass Timeout.Infinite as the period parameter. We can test if the process has started by checking if it has a pid, if it does not what you get is an InvalidOperationException so we have to cover for this case.
Even if the process has a pid it does not mean that it's in a healthy state, it could be not responding for example. In that case we can just kill the process if we think that it's not the expected behavior after the timeout.
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