Download Pure Aloha Program In C

21.12.2020
32 Comments
#include<stdio.h>
#include<stdlib.h>
#include<signal.h>
#include<sys/time.h>
int x=0;
void capture()
{
exit(0);
}
int get()
{
return x;
}
void put()
{
x++;
}
void node(char *p)
{
int name;
int seq1,seq2,i=0;
long t;
struct timeval tv;
struct timezone tz;
name=atoi(p);
while(1)
{
seq1=get();
seq2=get();
if(seq1seq2)
{
put();
seq1=get();
gettimeofday(&tv,&tz);
printf('station %d transmitting frame %d at %ld n',name,++i,tv,tz);
usleep(10);
seq2=get();
if(seq1!=seq2)
{
printf('station %d collision occured %d n',name,i--);
usleep(100);
}
else
{
printf('station %d transmission of frame %d success n',name,i);
}
}
usleep(200);
}
}
main()
{
pthread_t t1,t2,t3;
signal(SIGINT,capture);
pthread_create(&t1,0,(void *)node,'1');
pthread_create(&t2,0,(void *)node,'2');
pthread_create(&t3,0,(void *)node,'3');
while(1);
}

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