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Re: SPAWN background command without nohup? [message #88867 is a reply to message #88866]

Mon, 30 June 2014 03:03

dg86
Messages: 118
Registered: September 2012

Senior Member

On Monday, June 30, 2014 5:34:13 AM UTC-4, alx wrote:
> On Saturday, June 28, 2014 5:27:48 PM UTC+2, David Grier wrote:
>
>> Dear Folks,
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>>
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>> Using SPAWN to start a background process on unix-like systems
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>> can leave the process running even after the IDL process terminates.
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>> I'd like to arrange things so that the child process is killed when IDL exits.
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>> Here's a schematic example:
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>> IDL> spawn, 'myprocess &', pid=pid
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>> IDL> print, pid
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>> 62417
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>> IDL> exit
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>> $ ps | grep 62417
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>> grier 62417 0.0 0.1 2473856 12320 ?? S 10:41AM 0:00.02 myprocess
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>> This is similar to running a shell command with nohup:
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>> $ nohup myprocess &
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>> $ exit
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>> Is there a way to make IDL spawn a child process that terminates when
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>> the parent IDL session terminates?
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>> All the best,
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>> David
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> You might try to keep your spawned process synchronized with the parent IDL session : maybe by using the UNIT keyword ?
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> Just a guess, I have no experience with unix.
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> alx.

Thanks for thinking about this.

Using the UNIT keyword is indeed useful for shutting down the child process from the parent IDL session. It doesn't help, however, if the user exits IDL without actively shutting down the
child process.

I'm looking for a way to spawn a child process that runs in the background and cleanly quits when
the parent IDL session ends.

All the best,

David

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[Message index]

		SPAWN background command without nohup? By: dg86 on Sat, 28 June 2014 08:27
		Re: SPAWN background command without nohup? By: lecacheux.alain on Mon, 30 June 2014 02:34
		Re: SPAWN background command without nohup? By: dg86 on Mon, 30 June 2014 03:03
		Re: SPAWN background command without nohup? By: lecacheux.alain on Mon, 30 June 2014 04:17
		Re: SPAWN background command without nohup? By: dg86 on Mon, 30 June 2014 05:06
		Re: SPAWN background command without nohup? By: Matthew Argall on Mon, 30 June 2014 05:40
		Re: SPAWN background command without nohup? By: lecacheux.alain on Mon, 30 June 2014 09:21

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