Re: check if coproc has output

[Sebastian Gniazdowski <sgniazdowski@gmail.com>]

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I've read your post briefly and saw that you need to terminate the
background process. I recall that I was doing it in configure-wrapper that
I once wrote and that I used jobtexts. I do recall that it does contain
entry for coproc, so you could examine it in a INT trap and send a signal
to the coproc writing process.

On Thu, 19 Jan 2023 at 16:14, Pier Paolo Grassi <pierpaolog@gmail.com>
wrote:

> I did again the search in the manual and now I found it, maybe I mistyped
> the first time
> where do you suggest I try to print this array?
>
> Pier Paolo Grassi
>
>
> Il giorno gio 19 gen 2023 alle ore 17:10 Sebastian Gniazdowski <
> sgniazdowski@gmail.com> ha scritto:
>
>> Are you running zsh 3.0? That would only explain lack of following in
>> zshall:
>>
>>        jobtexts
>>               This associative array maps job numbers to the texts of the
>> command
>>               lines that were used to start the jobs.
>>
>>               Handling  of  the keys of the associative array is as
>> described for
>>               jobdirs above.
>>
>>
>> On Thu, 19 Jan 2023 at 16:08, Pier Paolo Grassi <pierpaolog@gmail.com>
>> wrote:
>>
>>> I'm sorry, what is $jobtexts? it seems an empty variable to me and
>>> doesn't appear in zshall manual
>>>
>>> Pier Paolo Grassi
>>>
>>>
>>> Il giorno gio 19 gen 2023 alle ore 17:02 Sebastian Gniazdowski <
>>> sgniazdowski@gmail.com> ha scritto:
>>>
>>>> You could get pid from $jobtexts?
>>>>
>>>> On Thu, 19 Jan 2023 at 15:43, Pier Paolo Grassi <pierpaolog@gmail.com>
>>>> wrote:
>>>>
>>>>> I realize now the subject doesn't reflect the final version of the
>>>>> mail, sorry for that
>>>>>
>>>>> Pier Paolo Grassi
>>>>>
>>>>>
>>>>> Il giorno gio 19 gen 2023 alle ore 16:32 Pier Paolo Grassi <
>>>>> pierpaolog@gmail.com> ha scritto:
>>>>>
>>>>>> Hello, I want to populate an array from a long running process,
>>>>>> something like:
>>>>>>
>>>>>> long_running_process | while read line
>>>>>> do
>>>>>>   array+=$line
>>>>>> done
>>>>>>
>>>>>> problem is, since long_running_process does not continually produce
>>>>>> output but only some times, when i try to interrupt this pipeline with
>>>>>> ctrl-c I have to wait until it produces some output for the process to
>>>>>> terminate (because, as I understand it, when it tries to write to the pipe
>>>>>> it receives a sigpipe due to it being already closed)
>>>>>>
>>>>>> I have tried various constructs with trap and even coproc to be able
>>>>>> to intercept the ctrl-c and send a sigpipe to the long running process, but
>>>>>> to no result.
>>>>>>
>>>>>> I wonder if someone has some solution to share for this problem,
>>>>>> thanks
>>>>>>
>>>>>> Pier Paolo Grassi
>>>>>>
>>>>>
>>>>
>>>> --
>>>> Best regards,
>>>> Sebastian Gniazdowski
>>>>
>>>>
>>
>> --
>> Best regards,
>> Sebastian Gniazdowski
>>
>>

-- 
Best regards,
Sebastian Gniazdowski

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