• Dsmith (4/4) Oct 05 2011 In the core.thread library, there is a method isRunning() which takes a ...
• Steven Schveighoffer (10/16) Oct 05 2011 It cannot. isRunning checks a local boolean, it does not do any OS
• Regan Heath (7/24) Oct 05 2011 .. on unix systems. :p
• Kagamin (3/4) Oct 05 2011 There's an open standard for this:

Dsmith <Dsmith nomail.com> writes:

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);

"Steven Schveighoffer" <schveiguy yahoo.com> writes:

On Wed, 05 Oct 2011 10:38:58 -0400, Dsmith <Dsmith 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.

-Steve

"Regan Heath" <regan netmail.co.nz> writes:

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

 On Wed, 05 Oct 2011 10:38:58 -0400, Dsmith <Dsmith 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.

-- 
Using Opera's revolutionary email client: http://www.opera.com/mail/

Kagamin <spam here.lot> writes:

Steven Schveighoffer Wrote:

 It's just the getting of the pid based on the name is not straightforward.

There's an open standard for this:
http://en.wikipedia.org/wiki/Common_Information_Model_%28computing%29