check for running process

[Regan Heath]

On Wed, 05 Oct 2011 16:05:02 +0100, Steven Schveighoffer  
<schveiguy at yahoo.com> wrote:

> On Wed, 05 Oct 2011 10:38:58 -0400, Dsmith <Dsmith at nomail.com> wrote:
>
>> In the core.thread library, there is a method isRunning() which takes a  
>> thread.
>>
>> To make code more portable, rather than use a system call or getenv(),  
>> how might
>> isRunning() be adapted to check if a program is running?
>> Ideally: isrunning(program_name);
>
> It cannot.  isRunning checks a local boolean, it does not do any OS  
> queries.
>
> Now, once you have a reference to a running process, I'd say it's  
> probably possible to add isRunning methods that call on the OS  
> functions.  Given a process ID, getting information about the process is  
> pretty straightforward.  I think this might be a good addition to  
> std.process if it's not already in there.
>
> It's just the getting of the pid based on the name is not  
> straightforward.

.. on unix systems. :p

In the past I've had to parse "ps" output on various platforms.  On  
Windows it's a great deal easier.

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