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  Message 1 of 2  
09 Jul 18 13:44
Prokash Sinha
xxxxxx@garlic.com
Join Date: 23 Feb 2000
Posts To This List: 1087
Re: RE: RE: Re: [BULK] Re: Modern C++ Features in Kernel Mode Drivers

I read this before, worth reading again :) > On Jul 9, 2018, at 10:16 AM, xxxxx@gmail.com <xxxxx@lists.osr.com> wrote: > > The Linux kernel has some 100,000 goto references. The Goto wars have been around since the late 60's. > > I use them, but rarely. I don't go out of my way to code around them. They just happen when they need to happen. > > This is a fun read: http://wiki.c2.com/?GotoConsideredHarmful <http://wiki.c2.com/?GotoConsideredHarmful> > > > On Mon, Jul 9, 2018 at 5:15 AM xxxxx@gmail.com <mailto:xxxxx@gmail.com> <xxxxx@lists.osr.com <mailto:xxxxx@lists.osr.com>> wrote: <...excess quoted lines suppressed...> --
  Message 2 of 2  
09 Jul 18 13:49
Tim Roberts
xxxxxx@probo.com
Join Date: 28 Jan 2005
Posts To This List: 12008
Re: RE: RE: Re: [BULK] Re: Modern C++ Features in Kernel Mode Drivers

xxxxx@garlic.com wrote: > No, I’m not. Last thing I remember was the GDI drivers ( on the graphics side), and IIRC it has C++. No, GDI drivers were all in C.  That's how I got my start.  Some of the user-mode printer DLLs used C++. > Where does it live in the stack ? Is it top level driver ? Yes.  AVStream and Port-class drivers are both miniports.  Your web camera and your sound card are both being driven by C++ code. > If it can be executed in arbitrary context, can you use exception ? I guess not ! Of course not.  You've never been able to use exceptions in the kernel, and you still can't do so today. I will say that, 10 or 15 years ago, I encountered a project that originally came from one-time driver luminary Walter Oney.  He had created a library and a set of assembler glue code that DID enable the use of C++ exceptions in the kernel.  It was frightening.  I backed slowly away. -- Tim Roberts, xxxxx@probo.com Providenza & Boekelheide, Inc.
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