int main(int argc, char **argv){
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
mi_init(argc, argv);
printf("enter barrier\n");
mi_barrier();
printf("exit barrier\n");
int i, j;
int *result = (int *)mi_alloc(sizeof(int));
printf("enter barrier\n");
mi_barrier();
printf("exit barrier\n");
for(i = 0; i < 3000; i++){
printf("before lock\n");
mi_lock(0);
printf("after lock\n");
*result = *result + 1;
printf("before unlock\n");
mi_unlock(0);
printf("after unlock\n");
}
printf("enter barrier\n");
mi_barrier();
printf("exit barrier\n");
printf("result = %d\n", *result);
mi_barrier();
showDataStructures();
}
struct mif *mi_open(char *iface)
{
struct mif *mi;
struct priv_if *pi;
pcap_t *pkt_in, *pkt_out;
char errbuf[PCAP_ERRBUF_SIZE];
/* setup mi struct */
mi = mi_alloc(sizeof(*pi));
if (!mi)
return NULL;
mi->read = mi_read;
mi->write = mi_write;
mi->close = mi_close;
// for pkt in
pkt_in = pcap_open_live(iface, 4096, 1, 10, errbuf);
if (pkt_in == NULL) {
printf("Unable to open interface %s in pcap: %s\n", iface, errbuf);
return NULL;
}
if (pcap_datalink(pkt_in) != DLT_IEEE802_11_RADIO) {
printf("Device %s doesn't provide 80211 radiotap header\n", iface);
return NULL;
}
if (pcap_setnonblock(pkt_in, 1, errbuf) == -1) {
printf("Device %s doesn't set non-blocking mode\n", iface);
return NULL;
}
// for pkt out
pkt_out = pcap_open_live(iface, 4096, 1, 10, errbuf);
if (pkt_out == NULL) {
printf("Unable to open interface %s in pcap: %s\n", iface, errbuf);
return NULL;
}
pi = mi_priv(mi);
pi->fd_in = pkt_in;
pi->fd_out = pkt_out;
return mi;
}
int main(int argc, char **argv)
{
int x, y, z, p, magic;
int error;
int (*local)[N] = (int (*)[N])malloc(N * N * sizeof(int));
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
mi_init(argc, argv);
mi_barrier();
a = (int (*)[N])mi_alloc(N * N * sizeof(int));
b = (int (*)[N])mi_alloc(N * N * sizeof(int));
c = (int (*)[N])mi_alloc(N * N * sizeof(int));
printf("Memory Allocation Done\n");
printf("starting barrier\n");
mi_barrier();
printf("exiting barrier\n");
printf("Initializing matrices ....................\n");
mi_lock(0);
seqinit();
mi_unlock(0);
printf("Initializing matrices done!\n");
printf("starting barrier 2\n");
mi_barrier();
printf("exiting barrier 2\n");
magic = N / hostnum;
for (x = myhostid * magic; x < (myhostid + 1) * magic; x++){
printf("x = %d\n",x);
for (y = 0; y < N; y++)
for (z = 0; z < N; z++)
local[y][z] += (a[x][y] * b[x][z]);
printf("x = %d done\n",x);
}
printf("starting barrier 3\n");
mi_barrier();
printf("exiting barrier 3\n");
for (x = 0; x < hostnum; x++)
{
p = (myhostid + x) % hostnum;
printf("lock %d\n", p);
mi_lock(p);
printf("lock %d done\n", p);
for (y = p * magic; y < (p + 1) * magic; y++)
{
for (z = 0; z < N; z++)
{ if (x == 0) c[y][z] = local[y][z];
else c[y][z] += local[y][z];
}
}
printf("unlock %d\n", p);
mi_unlock(p);
printf("unlock %d done\n", p);
if (x == 0) mi_barrier();
}
// mi_lock(0);
// for(x = 0; x < N; x++){
// for(y = 0; y < N; y++){
// c[x][y] += local[x][y];
// }
// }
// mi_unlock(0);
mi_barrier();
if (myhostid == 0)
{
error = 0;
for (x = 0; x < hostnum; x++)
{
mi_lock(x);
for (y = x * magic; y < (x + 1) * magic; y++)
{
for (z = 0; z < N; z++)
{
if (c[y][z] != N)
{ error = 1;
printf("ERROR: y = %d, z = %d, c = %d\n", y, z, c[y][z]);
}
}
}
mi_unlock(x);
}
if (error == 1)
printf("NOTE: There is some error in the program!\n");
}
printf("program will exit\n");
mi_barrier();
}