pendingcnt
w_->pending = ++pendingcnt [pri];
assert (pendingmax [i] >= pendingcnt [i]);
count += pendingcnt [pri];
while (pendingcnt [pendingpri])
ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
if (pendingcnt [pri])
VAR (pendingcnt, int pendingcnt [NUMPRI])
#define pendingcnt ((loop)->pendingcnt)