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pc.c
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pc.c
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#include <stdio.h>
#include <stdlib.h>
int n;
int mutex = 1, full = 0,empty, x = 0;
void producer() {
--full; // wait until empty>0 and decrement empty
--mutex; //lock aquired
printf("Producer produces the item %d\n", ++x);
++mutex; //lock released
--empty; // increment full
//wait(1000);
}
void consumer() {
--full; // wait until full>0 and decrement full
--mutex; //lock aquired
printf("Consumer consumed item %d\n", x--);
++mutex; //lock released
++empty; // increment empty
//wait(1000);
}
void main() {
printf("Enter the size of buffer -- ");
scanf("%d", &n);
empty = n;
int c;
while(1) {
printf("1. Producer\n2. Consumer\n3. Exit\n");
printf("Enter your choice -- ");
scanf("%d", &c);
switch(c) {
case 1: if((mutex == 1) && (empty != 0))
producer();
else
printf("Buffer is full\n");
break;
case 2: if((mutex == 1) && (full != 0) && (x != 0))
consumer();
else
printf("Buffer is empty\n");
break;
case 3: exit(0);
break;
default: printf("Invalid choice\n");
}
}
}