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Re: good reference on threads

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On 11/06/2021 13:31, Lynn McGuire wrote:
> On 6/10/2021 5:49 PM, Öö Tiib wrote:
>> On Friday, 11 June 2021 at 00:59:52 UTC+3, Lynn McGuire wrote:
>>> Is there a good reference on threads ? I would like to delegate the
>>> writing of our binary file to a background thread if possible. Our
>>> Win32 Windows desktop program is mostly MFC with about 450,000 lines of
>>> C++ code.
>>>
>>> I do suspect that this is not doable, due to the nature of the data
>>> being used for dialogs and such.
>>
>> Threads can be used in various ways. Making half million lines
>> code-base  that  is not thread safe to use threads is quite painful
>> trick to pull. "Not doable" is not what I've met, it is always "what it
>> will cost". I would maybe study Boost.Asio as it has nice clear
>> philosophy of how to use threads. Then the question will shift
>> from "how to make multiple threads to concurrently use same
>> data?" to "how to make seamless I/O between threads that all
>> have their own data?".
> 
> I already have threads that have their own data.  I guess that I should
> have mentioned that.
> 
> I want multiple threads to share the massive dataset that we use.  Very
> tricky, I have tried sharing data between the threads and it was a disaster.

Well it very much depends on whether you have multiple writers.  If you 
have a more readers than writers, std::shared_mutex is worth a look.

-- 
Ian.

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Thread

good reference on threads Lynn McGuire <lynnmcguire5@gmail.com> - 2021-06-10 16:59 -0500
  Re: good reference on threads Öö Tiib <ootiib@hot.ee> - 2021-06-10 15:49 -0700
    Re: good reference on threads Öö Tiib <ootiib@hot.ee> - 2021-06-10 17:58 -0700
    Re: good reference on threads Lynn McGuire <lynnmcguire5@gmail.com> - 2021-06-10 20:31 -0500
      Re: good reference on threads Öö Tiib <ootiib@hot.ee> - 2021-06-10 20:31 -0700
        Re: good reference on threads "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-06-10 21:32 -0700
          Re: good reference on threads "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-06-10 21:33 -0700
      Re: good reference on threads Ian Collins <ian-news@hotmail.com> - 2021-06-11 20:17 +1200
        Re: good reference on threads Lynn McGuire <lynnmcguire5@gmail.com> - 2021-06-11 14:13 -0500
      Re: good reference on threads Paavo Helde <myfirstname@osa.pri.ee> - 2021-06-11 14:03 +0300
        Re: good reference on threads Paavo Helde <myfirstname@osa.pri.ee> - 2021-06-11 15:19 +0300
        Re: good reference on threads "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-06-12 14:41 -0700
  Re: good reference on threads Lynn McGuire <lynnmcguire5@gmail.com> - 2021-06-10 22:03 -0500
    Re: good reference on threads "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-06-10 20:08 -0700
      Re: good reference on threads Lynn McGuire <lynnmcguire5@gmail.com> - 2021-07-01 22:27 -0500
        Re: good reference on threads "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-07-01 21:28 -0700
        Re: good reference on threads legalize+jeeves@mail.xmission.com (Richard) - 2021-07-27 01:21 +0000
    Re: good reference on threads Cholo Lennon <chololennon@hotmail.com> - 2021-06-12 23:06 -0300
      Re: good reference on threads Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-06-12 21:47 -0700
        Re: good reference on threads Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-06-12 21:49 -0700
    Re: good reference on threads legalize+jeeves@mail.xmission.com (Richard) - 2021-07-27 01:19 +0000
    Re: good reference on threads Bonita Montero <Bonita.Montero@gmail.com> - 2021-07-27 03:58 +0200

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