[win32] Fix suspend count handling

[Pedro Alves]

Lerele wrote:

> 
> I'd also like to ask you a question, concerning a comment from Pedro 
> several messages back that has stayed around in my mind since then.
> 
> It's not related with this specific thread title, but since it's 
> gdbserver/win32 related, I haven't found appropriate to open a new 
> thread just for this simple question.
> 
> The issue is near the end of:
> http://sourceware.org/ml/gdb-patches/2007-11/msg00041.html
> 
> It's about the fact of gdb win32-nat.c some time ago having the 
> interrupt functionality similar to the one that has been recently 
> implemented using SuspendThread (versus using DebugBreak kind of 
> functions). Pedro commented back then that win32-nat.c did have sometime 
> in the past a similar implementation [that must have been dropped].
> Do you know/remember if it was dropped for a specific reason?
> 

Humm, I guess I mistaked win32-nat.c for the winpdo-nat.c
files on Apple's gdb:

See in:
http://www.opensource.apple.com/darwinsource/tarballs/other/gdb-186.1.tar.gz

In src/gdb-next/winpdo-nat.c, you'll see a SuspendThreads mechanism.
The file header states 1996 as the latest copyright year, but they
may have easilly failed to update it.  I'm not sure if win32-nat
ever had this mechanism, or if it was only added by Apple.  Our
cvs history only goes back till 1999.

I did say: "I *think* that if...".  :-)

-- 
Pedro Alves