[Openthreads-info] Validitity checks for CurrentThread()->testCancel() and time sliced testCancel() added

[Robert O. <ro...@op...>]

Hi All,

I have just integrated a few more changes to the OpenThreads Win32 
implemenation.  The changed files are attached to get round the cvs read 
delay.

The key changes are :

A check against each call to testCancel() has been added to all the relevant 
code.  So now you'll see

   Thread* thread = CurrentThread();
   if (thread) thread->testCancel();

The previous CurrentThread()->testCancel() was causing crashes since the main 
thread does not have an associated OpenThreads Thread structure so 
CurrentThread returns null.

Also I've added the time slicing to the wait implemenation, that I suggested 
earlier today.

Again this code is untested under Win32 so please get back to with 
compile/execute fixes.

Thanks in advance for your feedback,
Robert.