internal static bool SignalAndWait (StWaitable tos, StWaitable tow, StCancelArgs cargs)
{
if (tos == tow) {
return true;
}
var pk = new StParker ();
StWaitBlock hint = null;
int sc = 0;
StWaitBlock wb = tow._WaitAnyPrologue (pk, StParkStatus.Success, ref hint, ref sc);
if (!tos._Release ()) {
if (wb != null && pk.TryCancel ()) {
tow._CancelAcquire (wb, hint);
} else {
if (wb != null) {
pk.Park ();
}
tow._UndoAcquire ();
}
throw tos._SignalException;
}
int ws;
if (hint == INFLATED || (ws = pk.Park (sc, cargs)) == StParkStatus.Inflated) {
return tow.InflatedWait (cargs);
}
if (ws == StParkStatus.Success) {
tow._WaitEpilogue ();
return true;
}
tow._CancelAcquire (wb, hint);
cargs.ThrowIfException (ws);
return false;
}
