Testing for a named thread?

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1

Okay, I’m deep in the weeds here.
I’ve been working on a method to slide the bpm over time for accelerando / ritardo effects. But when it runs in a separate thread, the rest of the code ignores the changes to bpm.
I rtfm’d and found sync_bpm, which will do what I want. But now I need to test whether a named thread currently exists, and if it does, sync_bpm.
Any idea how to do this? Is there a global list of current thread names that I can sniff? If the cue isn’t defined, the syncing code just waits indefinitely.
Thanks!

2

All right, I’ve got a kludgey solution here. I’d like some feedback on it.

eval_file "e:/yummy/yummyfillings.rb"

define  :slidebpm do |targetbpm, slidetime=16, steptime=0.25, startbpm=nil, cuename=:bpmsync, setname: :slidingbpm, **kwargs|
  eval overridekwargs(kwargs, method(__method__).parameters)
  cleanargs = stripparams kwargs, method(__method__).parameters
  debugprint "top of slidebpm"

  set setname,  true  

  steptime = steptime.to_f
  slidetime = slidetime.to_f  

  if !ringorlist  targetbpm 
    targetbpm = [targetbpm]
  end #if not ring or list already

  debugprint "targetbpm: ", targetbpm
  debugprint "slidetime: ", slidetime
  debugprint "steptime: ", steptime
  debugprint "startbpm: ", startbpm 

  thisbpm = startbpm || current_bpm
  debugprint "thisbpm: ", thisbpm


  targetbpm.each do |tbpm|
    debugprint "tbpm: ", tbpm
    stepsize = (tbpm - thisbpm) * steptime / slidetime 
    debugprint "stepsize: ", stepsize
    while !equalish(thisbpm, tbpm)  
      thisbpm += stepsize
      debugprint "thisbpm: ", thisbpm
      use_bpm thisbpm
      cue cuename
      sleep steptime
    end #while
  end #each tbpm

  set :slidingbpm, nil  

end #define slidebpm



define  :synctoslidingbpm do |cuename: :bpmsync, setname: :slidingbpm, **kwargs|
  eval overridekwargs(kwargs, method(__method__).parameters)
  cleanargs = stripparams kwargs, method(__method__).parameters
  debugprint "top of bpmsync"
  setflag = get[setname]
  if setflag 
    sync_bpm cuename 
  end #if currently sliding

end #define synctoslidingbpm


in_thread delay: 0.05 do
  slidebpm [200, 120]
  stop
end

in_thread do
  32.times do
    debugprint "current_bpm: ", current_bpm
    synctoslidingbpm
    sample :perc_bell
    sleep 1
  end
  sample :bd_808
  stop
end

Fyi, debugprint and equalish are methods defined in yummyfillings.rb.

I’m using a set/get variable to flag the current state, leveraging the fact that doing get on an undefined symbol returns nil.

It works, but it’s kind of a kludge. Any more elegant solutions?