Systemsoftware

Signal/Wait für Signal-Variante II
CV.Wait();
CV.Signal();
CV_Count++;
if (M_Urgentcount>0)
V(M_Urgent);
else V(M_Mutex);
P(CV);
P(M_Urgent);
M_Urgentcount--;
while (CV_Count>0) {
V(CV);
CV_Count--;
M_Urgentcount++;
}
Systemsoftware - Lektion X 19
Signal/Wait für Signal-Variante III
CV.Wait();
CV.Signal();
CV_Count++;
if (M_Urgentcount>0)
V(M_Urgent);
else V(M_Mutex);
/*Prozeß verläßt Monitor*/
P(CV);
/*Prozeß betritt Monitor*/
CV_Count--;
M_Urgentcount++;
if (CV_Count>0)
{
V(CV);
P(M_Urgent);
}
M_Urgentcount--;
Systemsoftware - Lektion X 20