 use except to prevent the compiler or linker
from complaining. <B>pthread_kill</B> is useful in determining if the
thread is a valid thread, but since many threads implementations
reuse thread IDs, the valid thread may no longer be the thread you
think it is, and so this method of determining thread validity is not
portable, and very risky. <B>pthreads-win32</B> from version 1.0.0
onwards implements pseudo-unique thread IDs, so applications that use
this technique (but really shouldn't) have some protectio