Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sources.redhat.com Delivered-To: mailing list cygwin@sources.redhat.com Date: Tue, 26 Jun 2001 22:40:32 -0700 (PDT) Message-Id: <20010626.224032.52840623.Takaaki.Ota@am.sony.com> To: cygwin@cygwin.com Subject: Re: pthreads works, sorta From: Tak Ota In-Reply-To: <20010627012932.I19058@redhat.com> References: <20010627012932.I19058@redhat.com> X-Mailer: Mew version 1.95b126 on Emacs 21.0.103.1 / Mule 5.0 (SAKAKI) X-Telephone: +1-858-942-3239 X-Fax------: +1-858-942-9142 X-SnailMail: 16450 West Bernardo Drive MZ7205, San Diego, CA 92127-1804 Organization: Sony Electronics Inc. Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit How about using IsBadReadPtr in addition to IsBadWritePtr? -Tak On Wed, 27 Jun 2001 01:29:32 -0400, Christopher Faylor wrote: > On Wed, Jun 27, 2001 at 01:10:35PM +1000, Robert Collins wrote: > >> -----Original Message----- > >> From: Greg Smith [mailto:gsmith@nc.rr.com] > > > >> > >> More experimenting with my home computer, dual pIII 850: > >> > >> 1. 117 157 328 > >> 2. 822 1527 --- > >> 3. 194 240 453 > >> 4. 169 181 516 > >> > >As usual, I write a missive, then solve the puzzle. > > > >try this: > > > > > >int __stdcall > >check_valid_pointer (void *pointer) > >{ > > if (!pointer || IsBadWritePtr(pointer, sizeof (verifyable_object))) > > return EFAULT; > > return 0; > >} > > This is not quite the same thing as VirtualQuery. This verifies that the > process can write to memory. It doesn't verify that it is accessible. > > Maybe that is not important but I would have to think about this. > > Nice find, though, Rob. > > cgf > > -- > Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple > Bug reporting: http://cygwin.com/bugs.html > Documentation: http://cygwin.com/docs.html > FAQ: http://cygwin.com/faq/ -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/