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From:	"Dave Korn" <dk AT artimi DOT com>
To:	<cygwin AT cygwin DOT com>
Subject:	RE: Ctrl-Z fails to suspend Windows programs
Date:	Wed, 16 Jun 2004 10:19:32 +0100
MIME-Version:	1.0
In-Reply-To:	<40CFD6E5.1070709@luukku.com>
Message-ID:	<NUTMEG3GaMJJ7SrF7aM000003b7@NUTMEG.CAM.ARTIMI.COM>
X-OriginalArrivalTime:	16 Jun 2004 09:19:32.0671 (UTC) FILETIME=[08CD4CF0:01C45383]

> -----Original Message-----
> From: cygwin-owner On Behalf Of Jani tiainen
> Sent: 16 June 2004 06:13
> To: cygwin
> Subject: Re: Ctrl-Z fails to suspend Windows programs
> 
> Christopher Faylor wrote:

> > There is no way to reliably suspend a Windows programs.
> 
> Yes there is ( piece of pseudo code):
> 
> For Each Thread THREAD_Y in Process PROCESS_X
> 	Call_Win32API SuspendThread(THREAD_Y.Handle)
> Next
> 
> NOTE: In Win2k and later you need THREAD_SUSPEND_RESUME rights for 
> particular thread.

  Arbitrarily suspending threads at random stages of execution can be very
bad news if they hold vital system locks....


    cheers, 
      DaveK
-- 
Can't think of a witty .sigline today....


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