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Article #2859Memory guard, how to do it?
From: tinyabs
Date: Tue, 12 Dec 2006 01:07
Date: Tue, 12 Dec 2006 01:07
16 lines
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1474 bytes
The scenario is like this: I have allocated memory buffer and like to mark none read/write/execute at the beginning and end of the buffer. 0x00600000-4K size [None-read/write/execute] 0x00601000-256K size [valid memory buffer] 0x00641000-4K size [none read/write/execute] I'm doing this because I have a graphics engine that uses assembly language to read and write to the buffer. I want an access violation exception when I access memory outside of buffer. My idea is to use VirtualAlloc to allocate the memory and then use VirtualProtect to change the attributes. Is this a viable way to do it or is there a shortcut?
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X-Google-Thread: 10cc67,e965a36da9329840,start X-Google-Attributes: gid10cc67,public X-Google-Language: ENGLISH,ASCII-7-bit From: "tinyabs" <nospam@me.com> Newsgroups: borland.public.cppbuilder.nativeapi Subject: Memory guard, how to do it? Date: Tue, 12 Dec 2006 09:07:09 +0800 Lines: 18 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-RFC2646: Format=Flowed; Original NNTP-Posting-Host: 222.164.221.72 Message-ID: <457e0082$1@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1165885570 222.164.221.72 (11 Dec 2006 17:06:10 -0700) Path: arc1-ca.pugleaf.net!g2news2.google.com!news2.google.com!news.maxwell.syr.edu!newsfeed00.sul.t-online.de!newsfeed01.sul.t-online.de!t-online.de!newsgroups.borland.com!not-for-mail