Re: Catching free memory violations

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#648

From: Usenet file owner
Date: Sun, 30 Jul 1989 17:48

31 lines
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In article <SHADOW.89Jul29071247@pawl.rpi.edu> shadow@pawl.rpi.edu (Deven T. Corzine) writes:
>
>On 28 Jul 89 19:44:05 GMT,
>fgd3@jc3b21.UUCP (Fabbian G. Dufoe) said:
>
>FGD> In article <7408@ecsvax.UUCP> utoddl@ecsvax.UUCP (Todd M. Lewis)
[ --stuff ]
>FreeMem() function to zero memory *as it is freed*.  Then either a
>SetFunction()ed AllocMem() function or some separate task/function

 
 There is a sticky problem with this idea,

	function() {
		x=AllocMem()

		playwithit(x);

		Forbid();
		FreeMem(x,len);
		playsomemore(x);
		Permit();
	}

No if you go zeroing things out at the FreeMem call, you can potentially
screw somebody up.

When a task is ending, does the Tasks memory get freed before
it actually returns?

REAL NAME: Joe Porkka   jap@frith.cl.msu.edu

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References: <7408@ecsvax.UUCP> <694@jc3b21.UUCP> <SHADOW.89Jul29071247@pawl.rpi.edu>

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!ginosko!husc6!mailrus!ncar!tank!eecae!cps3xx!usenet
From: usenet@cps3xx.UUCP (Usenet file owner)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Catching free memory violations
Message-ID: <3985@cps3xx.UUCP>
Date: 30 Jul 89 17:48:54 GMT
References: <7408@ecsvax.UUCP> <694@jc3b21.UUCP> <SHADOW.89Jul29071247@pawl.rpi.edu>
Reply-To: porkka@frith.UUCP (Joe Porkka)
Organization: Michigan State University
Lines: 31

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