[Vm-dev] [Pharo-dev] Is there a way to know if I am in iTimer VM?

Tobias Pape Das.Linux at gmx.de
Tue May 16 15:20:50 UTC 2017


> On 16.05.2017, at 17:14, Eliot Miranda <eliot.miranda at gmail.com> wrote:
> 
> Hi Mariano,
> 
> On May 16, 2017, at 7:48 AM, Mariano Martinez Peck <marianopeck at gmail.com> wrote:
> 
>> 
>> 
>> On Tue, May 16, 2017 at 11:43 AM, Eliot Miranda <eliot.miranda at gmail.com> wrote:
>> 
>> Hi Mariano,
>> 
>> On May 16, 2017, at 6:35 AM, Mariano Martinez Peck <marianopeck at gmail.com> wrote:
>> 
>>> Guys,
>>> 
>>> As you know, OSSubprocess does not work correctly in Linux unless you use the iTimer VM. 
>> 
>> As others have pointed out, you mean that OSSubprocess does not work correctly unless you use the threaded heartbeat VM.  That the itinerary heartbeat breaks OSSubprocess.
>> 
>> 
>> Yes, sorry about that. 
>> 
>> 
>>> I would like to open a warning (that growl thingy on bottom left of the screen) or something at loading / install time if I can detect I am under Linux AND under traditional linux VM (not itimer).
>>> 
>>> Do you know how can I do that?  
>> I made a mistake in that there is no way, other than by using the FFI, to discover if the timer heartbeat is being used.  Would it be satisfactory if I provide a flag in vm parameter 48 that, if set, indicates the itimer heartbeat is in use?  This could be done in a few minutes and would be ready for the official release of Pharo 6.
>>> 
>> 
>> Well, it would be helpful as I may be able to throw a warning. Would this flag be set only under Linux VM?
> 
> Effectively, yes.  It would be set in VMs that use the itimer heartbeat.  Currently that's only a subset of the Linux VMs.  Hopefully it will not be set in any vm soon :-)


Can't guarantee that to you.
Not unless the threaded-heartbeat-vm can be used hazzle-free (ie, without using sudo/..) ;)

SCNR, sorrry

> 
>> 
>> Thanks,
>> 
>> 
>>> -- 
>>> Mariano
>>> http://marianopeck.wordpress.com
>> 
>> 
>> 
>> 
>> -- 
>> Mariano
>> http://marianopeck.wordpress.com



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