pthreads works, sorta

Steve Jorgensen jorgens@coho.net
Tue Jun 26 23:11:00 GMT 2001


OK, I'm over my head to even try to participate in this, but it seems to me 
that if you want to check for the condition where you can neither read nor 
write, and you can never write if you can't read, then you only need to 
check the read condition.  You only need to check the write condition if 
you need to distinguish between read-only and read/write.

-----Original Message-----
From:	Robert Collins [SMTP:robert.collins@itdomain.com.au]
Sent:	Tuesday, June 26, 2001 10:49 PM
To:	Tak Ota; cygwin@cygwin.com
Subject:	RE: pthreads works, sorta

> -----Original Message-----
> From: Tak Ota [ mailto:Takaaki.Ota@am.sony.com ]
> Sent: Wednesday, June 27, 2001 3:53 PM
> To: cygwin@cygwin.com
> Subject: Re: pthreads works, sorta
>
>
> I'm not sure either.  If that is the case, replacing IsBadWritePtr
> with IsBadReadPtr maybe the answer since can't read mans can't write.
>


Nope, write is the one :]

IIRC my cpu bits correctly there is a page bit for readonly, not page
bits for read and for write.

So writeable implies readable, readable does not imply writeable.

Rob

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