SC_IN_PROGRESS
*(hs->sc_lock) = SC_IN_PROGRESS;
while ((lock == SC_IN_PROGRESS) || (lock == SC_DISCONNECTED)) {
while ((lock == SC_IN_PROGRESS) || (lock == SC_DISCONNECTED)) {
while ((lock == SC_IN_PROGRESS) || (lock == SC_DISCONNECTED)) {
*(hs->sc_lock) = SC_IN_PROGRESS;