Re: Run Io coroutines in background simultaneous to using Io> prompt in foreground?

Thanks that was a big help but it wasn't quite the solution.  I was able to make it run a background process simultaneous to generating my own prompt.  But that only solves half my problem: "EditLine readLine" is a blocking call, so it still halts other coroutines while waiting at the "fake Io>" prompt.  (Because you can't yield between keypresses.)  So it still only executes the background loops once per every time I hit the "return" key on a command in the prompt.

I'm thinking maybe I need something like:

createThread("loop that does readLine for FakeIo> prompt")
@@backgroundCoroutine("do stuff in a loop that yields at the end")

loop(
  check for new command from other thread
    yield if no new command
    doString() if there is a command
)

But how do I get the string data out of the separate VM on the thread that's displaying the FakeIo> prompt and into the original VM that has the backgroundCoroutines and the doString loop?  Shared memory?  Pipes?  Send it to localhost via TCP/IP through a BSD socket??

For the sake of completeness, here's the test code I've got so far: (The idea is the background coroutine increments n every second, while the foreground prompt can change or print n if you type the right command.  The fact that the background coroutine picks up on the change and begins incrementing the new value of n proves the foreground prompt changed a variable in the background coroutine.)

n := 1

doBackground := method(
        loop("N is " print; n println; n = n + 1; wait(1))
)

doPrompt := method(
        s := ""; loop(println; s = EditLine readLine("FakeIo>"); doString(s); yield)
)

@@doBackground
doPrompt



--- In iolanguage@..., Steve Dekorte <steve@...> wrote: