On Sat, Apr 28, 2018 at 9:53 AM, Rony G. Flatscher <[email protected]>
wrote:
> Trying to make the question clearer: while developing the code for the
> monitor's LINEIN method by accident I noticed that any error in this method
> will cause the input monitor to be regarded to be closed: in one version I
> was using a sysSleep() for a "randome(0,999)/1000" (note the trailing "e"
> in "randome(...)") which caused the program to end without any input and
> without any error message indicating that there was a coding error in the
> LINEIN method.
>
Yeah, that's an issue I'm still wrestling with. Because of how things are
set up with multiple threads/etc. it is not really possible to raise an
error at that point. Things tend to crash. For now, it is just swallowing
the errors and treating everything as a NOVALUE condition. I need to figure
out a mechanism that allows me to propagate the error to the original
calling level.
Rick
>
>
> ---rony
>
>
> On 28.04.2018 15:45, Rony G. Flatscher wrote:
>
> Another question ad using a monitor for input: is it o.k. to cause an
> error in the LINEIN method by not returning a value, if the input monitor
> supplied all of its items as input?
>
> Currently the following code works without raising a condition and causes
> the end of input to be noticed:
>
> ::method linein
> expose log thisClzName rxq
> val=rxq~pull
> if val=.nil then return
>
> str=.dateTime~new thisClzName", received="pp(val,"{","}")
> call lineout "stderr:", "--->" str "<---"
> log~append(str)
> return str
>
> "log" is an array, "rxq" a RexxQueue containing the data to be returned as
> input for the executing program/command one by one.
>
> ---rony
>
> P.S.: On a side-note: it is great that using monitors one can act in
> "real-time" i.e. acting upon output or error output.
>
>
>
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