ANN: unix-2.4.0.0 additional POSIX real time support

[VasiliIGalchin]

Hello,

      Additional POSIX realtime (POSIX 1003.1b) support has been added:

1) MQueue.hsc - POSIX message queues

     Supported FFI bindings for:
 
          - mq_open

          - mq_close

          - mq_unlink

          - mq_getattributes

          - mq_setattributes

          - mq_send


      Not yet supported bindings:

          - mq_rcv .. still debugging a mysterious problem

          - mq_notify - will support when asynchronous I/O is implemented


2) RTsched.hsc - real time scheduling


      Supported bindings for:

            - sched_yield

            - sched_get_param

            - sched_set_param

            - sched _get_scheduler

            - sched_set_scheduler

            - sched_get_priority_min
 
            - sched_get_priority_max     


      Unsupported currently:

             - sched_rr_get_interval - still looking for the TimeSpec data type in order to get "peek"  working


3) Files.hsc


           Added bindings for:

                 - fsync

                 - fdatasync     


I am new to Haskell but would like to make a lot of contributions to insure Haskell success in the marketplace (of ideas ;^)).  I apologize for any glitches and look for feedback.

Kind regards, Vasili
   



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[Don Stewart-2]

vigalchin:

>    Hello,
>
>          Additional POSIX realtime (POSIX 1003.1b) support has been added:
>
>    1) MQueue.hsc - POSIX message queues
>
>         Supported FFI bindings for:
>    
>              - mq_open
>
>              - mq_close
>
>              - mq_unlink
>
>              - mq_getattributes
>
>              - mq_setattributes
>
>              - mq_send
>
>          Not yet supported bindings:
>
>              - mq_rcv .. still debugging a mysterious problem
>
>              - mq_notify - will support when asynchronous I/O is implemented
>
>    2) RTsched.hsc - real time scheduling
>
>          Supported bindings for:
>
>                - sched_yield
>
>                - sched_get_param
>
>                - sched_set_param
>
>                - sched _get_scheduler
>
>                - sched_set_scheduler
>
>                - sched_get_priority_min
>    
>                - sched_get_priority_max    
>
>          Unsupported currently:
>
>                 - sched_rr_get_interval - still looking for the TimeSpec data
>    type in order to get "peek"  working
>
>    3) Files.hsc
>
>               Added bindings for:
>
>                     - fsync
>
>                     - fdatasync    
>
>    I am new to Haskell but would like to make a lot of contributions to
>    insure Haskell success in the marketplace (of ideas ;^)).  I apologize for
>    any glitches and look for feedback.

Very interesting!

However... this library is a core package, and maintained by
libraries@..., so you should not release it yourself.

Instead, submit your patches to libraries@ for inclusion, following the
patch submission guide here:

    http://haskell.org/haskellwiki/How_to_write_a_Haskell_program

Where the patches will be tested on other unix platforms, and then
encorporated into the main 'unix' repository.

Also, as unix .hsc files tend to be a bit fragile, portability wise, it
might be a good idea to instead place your patches in a separate library
on hackage, rather than patching the 'unix' package directly. We have
many other unix-alike packages, so one for message queues, and real time
scheduling make sense -- separate from the core 'unix' package (like the
mmap package, for example).

-- Don
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