Examen

#include "rshmem.h"
#include
#include
#include
#include
#define N 5
typedef int semaphore;
int state[N];
semaphore mutex=1;
semaphore s[N];
viod philosopher(int i)
{
incrementa (int *mem, int k){
int i;
i=*mem;
TP ; TP ; TP TP ;
TP ; TP TP ; TP ;
TP TP ; TP ; TP
i=i+k;
TP ; TP ; TP TP ;
TP ; TP TP ; TP ;
TP TP ; TP ; TP
*mem=i;

}

filosofo(FILE *pf, key_t *sclave, int *sfilo, int i, int *comer, int *fin, int *fc){
while (true){
think();
take_forks(i);
eat();
put_forks(i);
}
}
void take_forks(int i)
{
down(&mutex);
state[i] = HUNGRY;
test(i);
up(&mutex);
down(&s[i]);
}
void put_forks(i)
{
down(&mutex);
state[i] = THINKING;
test(LEFT);
test(RIGHT);
up(&mutex);
}
void test(i)
{
if(state[i] == HUNGRY && state [LEFT]!= EATING && state [RIGHT]!=EATING){
state[i]=EATING;
up(&s[i]);
}
}