Groups > comp.programming.threads > #421

Re: POSIX threads hard to implement in Windows

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Sender	scott@lews (Scott Lurndal)
From	scott@slp53.sl.home (Scott Lurndal)
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Subject	Re: POSIX threads hard to implement in Windows
Newsgroups	comp.lang.c, comp.programming.threads, comp.unix.programmer
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Date	11 Jul 2011 16:18:17 GMT
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Cross-posted to 3 groups.

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lawrence.jones@siemens.com writes:
>William Ahern <william@wilbur.25thandclement.com> wrote:
>> 
>> POSIX threads can be implemented quite comprehensively on Windows:
>> 
>>         http://sourceware.org/pthreads-win32/conformance.html
>
>Then why is there a long list of unimplemented functions?  Certainly
>there are *parts* of pthreads that can be implemented on Windows, but
>that's not the same thing as implementing the whole thing.

A quick examination of the list of functions concludes that they
fit into one of the following categories:

  - Not applicable to windows (pthread_atfork, getpwnam_r, et. al.)
  - An optional POSIX feature (robust mutexes)
  - stdio & C Library extensions
  - signals

It looks like cancellation points are the most difficult feature of
pthreads to implement on windows - this reference notes that the
application must explictly code the cancellation points into the
application using non-standard API's.

scott

Thread

POSIX threads hard to implement in Windows (was: C is fixed or not ?) Noob <root@127.0.0.1> - 2011-07-07 15:17 +0200
  Re: POSIX threads hard to implement in Windows William Ahern <william@wilbur.25thandClement.com> - 2011-07-07 11:21 -0700
    Re: POSIX threads hard to implement in Windows Ian Collins <ian-news@hotmail.com> - 2011-07-08 08:07 +1200
      Re: POSIX threads hard to implement in Windows Robert Wessel <robertwessel2@yahoo.com> - 2011-07-07 16:01 -0500
        Re: POSIX threads hard to implement in Windows "MikeP" <mp011011@some.org> - 2011-07-07 21:12 -0500
          Re: POSIX threads hard to implement in Windows Robert Wessel <robertwessel2@yahoo.com> - 2011-07-07 23:33 -0500
            Re: POSIX threads hard to implement in Windows "MikeP" <mp011011@some.org> - 2011-07-07 23:49 -0500
          Re: POSIX threads hard to implement in Windows BGB <cr88192@hotmail.com> - 2011-08-03 07:32 -0700
      Re: POSIX threads hard to implement in Windows William Ahern <william@wilbur.25thandClement.com> - 2011-07-07 15:06 -0700
    Re: POSIX threads hard to implement in Windows lawrence.jones@siemens.com - 2011-07-10 16:08 -0400
      Re: POSIX threads hard to implement in Windows William Ahern <william@wilbur.25thandClement.com> - 2011-07-10 16:09 -0700
        Re: POSIX threads hard to implement in Windows James Kuyper <jameskuyper@verizon.net> - 2011-07-11 06:20 -0400
          Re: POSIX threads hard to implement in Windows Ian Collins <ian-news@hotmail.com> - 2011-07-11 22:36 +1200
      Re: POSIX threads hard to implement in Windows scott@slp53.sl.home (Scott Lurndal) - 2011-07-11 16:18 +0000
        Re: POSIX threads hard to implement in Windows Geoff Clare <geoff@clare.See-My-Signature.invalid> - 2011-07-12 13:30 +0100
  Re: POSIX threads hard to implement in Windows (was: C is fixed or not ?) Joshua Maurice <joshuamaurice@gmail.com> - 2011-07-07 19:01 -0700
  Re: POSIX threads hard to implement in Windows (was: C is fixed or not ?) "Ersek, Laszlo" <lacos@caesar.elte.hu> - 2011-07-14 23:05 +0200

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