class mutex

[Olivier Dagenais]

Great!  I learn something new every day...
So... what would Win95/98/Me do?

--
----------------------------------------------------------------------
Olivier A. Dagenais - Software Architect and Developer
"Someone called 'Type your name here' is impersonating me on the
internet and is posting exactly the same things I am posting!"


<jay.krell at cornell.edu> wrote in message
news:mailman.972384960.25318.python-list at python.org...
> No. Windows does not use a tempfile. That would be crude.
>
> NT at least has an internal in-memory-mostly hierarchical namespace. The
> file system and registry namespaces rooted in the in memory namespace.
Lots
> of different types of named objects can live in the namespace, and the
> system is extensible (there's a toplevel directory \ObjectTypes). Types
> include Type, Directory, Port, Device, Event (Win32/NT kernel event, same
> thing), Mutant (something that an implement the semantics of both Win32
> mutexes and OS/2 mutexes), SymbolicLink, Section (file memory mapping,
> possibly pagefile backed), Process, Thread, Timer, Token (security),
Driver,
> File, Key (registry). Win32 objects live in \BaseNamedObjects, at least on
> non Terminal Server logins.
>
> Run winobj from www.sysinternals.com.
>
> Win32 critical sections are much cheaper than Win32 mutexes.
> Every mutex operation is a syscall.
> Critical sections only involve syscalls when there is contention on
them --
> they on demand create a kernel object and wait on it.
>
>  - Jay
>
> -----Original Message-----
> From: Olivier Dagenais <olivierS.dagenaisP at canadaA.comM>
> Newsgroups: comp.lang.python
> To: python-list at python.org <python-list at python.org>
> Date: Sunday, October 22, 2000 6:16 PM
> Subject: Re: class mutex
>
>
> >MSDN says this about an article relating to CreateMutex:  "You can use a
> >mutex object to protect a shared resource from simultaneous access by
> >multiple threads or processes."  Does Unix/Linux also have something like
> >this (at the process level)?  What about Mac and (maybe) other platforms?
> >It would be nice if they were wrapped in one convenient Python
> >module/object.
> >
> >It sounds like Windows uses a tempfile to accomplish this and I would
guess
> >Unix/Linux - a file-oriented OS - would do the same thing.  However,
these
> >are just guesses, we'd need to confirm this...
> >
> >--
> >----------------------------------------------------------------------
> >Olivier A. Dagenais - Software Architect and Developer
> >"Someone called 'Type your name here' is impersonating me on the
> >internet and is posting exactly the same things I am posting!"
> >
> >
> >"Darrell" <news at dorb.com> wrote in message
> >news:MUII5.70068$JS3.10348560 at typhoon.nyroc.rr.com...
> >> If your on Windows then try "win32event.CreateMutex"
> >>
> >> --Darrell
> >>
> >> "Prof. Peter Stoehr" <peter.stoehr at weihenstephan.org> wrote in message
> >> > Based on that, I have two questions:
> >> > 1) Does python provide a real mutex object.
> >> > 2) What is the use of the class mutex
> >> >
> >>
> >>
> >>
> >
> >
> >--
> >http://www.python.org/mailman/listinfo/python-list
>
>