User-Level Native Thread Primitives (GThread) Library White Paper (G06.26+)

User-Level Native Thread Primitives (GThread Library) 03/31/2005
Hewlett-Packard Company--540065-001 Page 13 of 46
The following defines interpret or set GThread_CB.SwapArea:
GTHREAD_STATIC(CB) reports true (nonzero) for a static thread.
GTHREAD_SWAPAREA_VALID(CB) reports true for swapped thread with contiguous swap area.
GTHREAD_SWAPAREA_INVALIDATE(CB) marks the thread as having discontiguous swap
area.
GTH_NULL_PROCADDR is the null value for passing to GTHREAD_SETJMP_ or
GTHREAD_LONGJMP_ in lieu of the address of a procedure to call.