Re: [plexil-support] Concurrence not working (previously sent before, but this time without attachment)

[Dalal, M. (ARC-TI)[S. G. T. I. (S. Inc.)] <mic...@na...>]

Catherine,

Perhaps the while loop in MonitorTimeout is just spinning and hence blocking the plan.  Monitors are typically written with Start conditions, which are checked once per macro step or quiescence cycle.  Could you try this:

MonitorTimeout:
{
          ExitCondition isVacuumApplied;
          StartCondition  Lookup(time,0.1) - startTime <= timeOut;

          pastTimeOut = true;
}

I'll think about this some more, and may have another idea…

Mike



On Feb 18, 2014, at 7:50 AM, Catherine Szeto <Cat...@ti...<mailto:Cat...@ti...>> wrote:

Any feedback or alternatives I should try?

From: Catherine Szeto
Sent: Thursday, February 13, 2014 10:45 AM
To: 'Fry, Charles R. {Chuck} (ARC-TI)[Stinger Ghaffarian Technologies Inc. (SGT Inc.)]'
Cc: ple...@li...<mailto:ple...@li...>
Subject: RE: [plexil-support] Concurrence not working (previously sent before, but this time without attachment)

Sure. MonitorTimeout is simple so I put its entirety here and I put a snippet of ApplyVacuumTo_Sequence:

MonitorTimeout:
{
          ExitCondition isVacuumApplied;

         while((Lookup(time,0.1) - startTime) <= timeOut) {}
                   pastTimeOut = true;
}

ApplyVacuumTo_Sequence
{
**variable assignments here**

      ExitCondition (Lookup(time,0.1) - startTime) > timeOut;
      RepeatCondition …;

      LibraryCall SetSpecialValves();
      LibraryCall TurnVacuumValves();

      ….
      isVacuumApplied =true;
}

My goal is to have ApplyVacuumTo_Sequence execute while have some kind of timer that forces ApplyVacuumTo_Sequence to abort if it goes over the given “timeOut” time before it finishes execution.  If it is aborted, I need to print to the terminal that ApplyVacuumTo_Sequence was aborted due to timeout. I put MonitorTimeout as a way to set a flag in case ApplyVacuumTo_Sequence is forced to finish due to being overtime, so another node can read that flag to print to the terminal about the timeout.

Catherine


From: Fry, Charles R. {Chuck} (ARC-TI)[Stinger Ghaffarian Technologies Inc. (SGT Inc.)] [mailto:chu...@na...]
Sent: Wednesday, February 12, 2014 6:15 PM
To: Catherine Szeto
Cc: ple...@li...<mailto:ple...@li...>
Subject: Re: [plexil-support] Concurrence not working (previously sent before, but this time without attachment)

What is the interaction between MonitorTimeout and ApplyVacuumTo_Sequence? Can you send us a code fragment?

-- Chuck

On Feb 12, 2014, at 3:00 PM, Catherine Szeto <Cat...@ti...<mailto:Cat...@ti...>> wrote:

Hello,
         I am trying to run two actions concurrently, but one (ApplyVacuumTo_Sequence) always waits with its first subaction as “skipped”  while the other (MonitorTimeout) continues to execute. The waiting action doesn’t continue until the other one is finished. Without the MonitorTimeout action, ApplyVacuumTo_Sequence executes all of its subactions without a problem. All MonitorTimeout has is a while loop that exits after a timeout is reached. If it is relevant, the subaction that is waiting is one that calls another plan through LibraryCall.

Please confirm if this is correct Concurrence behavior or not. Thank you.

Catherine Szeto


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Chuck Fry
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