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Date: Wed, 12 Sep 2001 13:23:02 -0400
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin-developers AT cygwin DOT com
Subject: Re: Quick testfeedback...
Message-ID: <20010912132302.A18631@redhat.com>
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On Wed, Sep 12, 2001 at 07:21:04PM +0200, Corinna Vinschen wrote:
>On Wed, Sep 12, 2001 at 12:56:41PM -0400, Christopher Faylor wrote:
>> On Wed, Sep 12, 2001 at 06:48:12PM +0200, Corinna Vinschen wrote:
>> >On Wed, Sep 12, 2001 at 06:40:31PM +0200, Corinna Vinschen wrote:
>> >> On Tue, Sep 11, 2001 at 10:00:11PM +1000, Robert Collins wrote:
>> >> > +  if (iswinnt)
>> >> > +    InitializeCriticalSection (&criticalsection);
>> >> > +  else
>> >> > +    {
>> >> > +      this->win32_obj_id =::CreateMutex (&sec_none_nih, false, NULL);
>> >> > +      if (!win32_obj_id)
>> >> > +        magic = 0;
>> >> > +    }
>> >> 
>> >> Could somebody give me a short hint why we're using critical
>> >> sections on NT only?  I need some three word only description...
>> >> something memorable...
>> >
>> >Whoops, is the fact that TryEnterCriticalSection() is only
>> >available since NT4 the reason, perhaps???
>> 
>> Apparently.
>> 
>> Cygwin's muto class actually does a sort of critical section and has
>> TryEnterCriticalSection capabilities.
>> 
>> I don't think that mutos are necessarily general purpose enough for
>> this but maybe we could do something similar.  Or we could probably
>> roll our own version of TryEnterCriticalSection.
>
>Don't worry.  I'm just asking to know how to name the new wincap
>flag for that stuff. :-)

I *am* concerned about YA performance hit on Windows 9x, though.  I'd like
to avoid that if possible.

cgf