static void test_add_sub(void) {
int i;
int j;
int k;
/* Basic addition and subtraction. */
for (i = -100; i <= 100; i++) {
for (j = -100; j <= 100; j++) {
for (k = 1; k <= 10000000; k *= 10) {
int sum = i + j;
int diff = i - j;
gpr_timespec it = gpr_time_from_micros(i * k, GPR_TIMESPAN);
gpr_timespec jt = gpr_time_from_micros(j * k, GPR_TIMESPAN);
gpr_timespec sumt = gpr_time_add(it, jt);
gpr_timespec difft = gpr_time_sub(it, jt);
if (gpr_time_cmp(gpr_time_from_micros(sum * k, GPR_TIMESPAN), sumt) !=
0) {
fprintf(stderr, "i %d j %d sum %d sumt ", i, j, sum);
ts_to_s(sumt, &to_fp, stderr);
fprintf(stderr, "\n");
GPR_ASSERT(0);
}
if (gpr_time_cmp(gpr_time_from_micros(diff * k, GPR_TIMESPAN), difft) !=
0) {
fprintf(stderr, "i %d j %d diff %d diff ", i, j, diff);
ts_to_s(sumt, &to_fp, stderr);
fprintf(stderr, "\n");
GPR_ASSERT(0);
}
}
}
}
}
static void test_values(void) {
int i;
gpr_timespec x = gpr_time_0(GPR_CLOCK_REALTIME);
GPR_ASSERT(x.tv_sec == 0 && x.tv_nsec == 0);
x = gpr_inf_future(GPR_CLOCK_REALTIME);
fprintf(stderr, "far future ");
i_to_s(x.tv_sec, 16, 16, &to_fp, stderr);
fprintf(stderr, "\n");
GPR_ASSERT(x.tv_sec == INT64_MAX);
fprintf(stderr, "far future ");
ts_to_s(x, &to_fp, stderr);
fprintf(stderr, "\n");
x = gpr_inf_past(GPR_CLOCK_REALTIME);
fprintf(stderr, "far past ");
i_to_s(x.tv_sec, 16, 16, &to_fp, stderr);
fprintf(stderr, "\n");
GPR_ASSERT(x.tv_sec == INT64_MIN);
fprintf(stderr, "far past ");
ts_to_s(x, &to_fp, stderr);
fprintf(stderr, "\n");
for (i = 1; i != 1000 * 1000 * 1000; i *= 10) {
x = gpr_time_from_micros(i, GPR_TIMESPAN);
GPR_ASSERT(x.tv_sec == i / GPR_US_PER_SEC &&
x.tv_nsec == (i % GPR_US_PER_SEC) * GPR_NS_PER_US);
x = gpr_time_from_nanos(i, GPR_TIMESPAN);
GPR_ASSERT(x.tv_sec == i / GPR_NS_PER_SEC &&
x.tv_nsec == (i % GPR_NS_PER_SEC));
x = gpr_time_from_millis(i, GPR_TIMESPAN);
GPR_ASSERT(x.tv_sec == i / GPR_MS_PER_SEC &&
x.tv_nsec == (i % GPR_MS_PER_SEC) * GPR_NS_PER_MS);
}
/* Test possible overflow in conversion of -ve values. */
x = gpr_time_from_micros(-(LONG_MAX - 999997), GPR_TIMESPAN);
GPR_ASSERT(x.tv_sec < 0);
GPR_ASSERT(x.tv_nsec >= 0 && x.tv_nsec < GPR_NS_PER_SEC);
x = gpr_time_from_nanos(-(LONG_MAX - 999999997), GPR_TIMESPAN);
GPR_ASSERT(x.tv_sec < 0);
GPR_ASSERT(x.tv_nsec >= 0 && x.tv_nsec < GPR_NS_PER_SEC);
x = gpr_time_from_millis(-(LONG_MAX - 997), GPR_TIMESPAN);
GPR_ASSERT(x.tv_sec < 0);
GPR_ASSERT(x.tv_nsec >= 0 && x.tv_nsec < GPR_NS_PER_SEC);
/* Test general -ve values. */
for (i = -1; i > -1000 * 1000 * 1000; i *= 7) {
x = gpr_time_from_micros(i, GPR_TIMESPAN);
GPR_ASSERT(x.tv_sec * GPR_US_PER_SEC + x.tv_nsec / GPR_NS_PER_US == i);
x = gpr_time_from_nanos(i, GPR_TIMESPAN);
GPR_ASSERT(x.tv_sec * GPR_NS_PER_SEC + x.tv_nsec == i);
x = gpr_time_from_millis(i, GPR_TIMESPAN);
GPR_ASSERT(x.tv_sec * GPR_MS_PER_SEC + x.tv_nsec / GPR_NS_PER_MS == i);
}
}
void launch_client() {
/* For a single time frame. */
struct timespec frame_time = {0};
struct timespec frame_rem = {0};
/* Stats */
long rate_acc = 0;
int64_t rate_tot = 0;
/* For the whole experiment. */
struct timespec exp_start = {0};
struct timespec exp_end = {0};
struct timespec frame_start = {0};
struct sockaddr_in srvaddr = {0};
char buf[1024] = {0};
int sent = 0;
int sock = 0;
sock = socket(PF_INET, SOCK_DGRAM, 0);
if(sock < 0) {
printf("Error while creating the socket!\n");
return;
}
srvaddr.sin_family = AF_INET;
srvaddr.sin_port = htons(atoi(port));
srvaddr.sin_addr.s_addr = inet_addr(addr);
clock_gettime(CLOCK_REALTIME, &exp_start);
clock_gettime(CLOCK_REALTIME, &frame_start);
while(!stop) {
sent = sendto(
sock,
buf, 1024,
0,
(struct sockaddr *)&srvaddr,
sizeof(struct sockaddr_in));
/* Time to end this... */
clock_gettime(CLOCK_REALTIME, &exp_end);
/* Report it every second. */
if(ts_to_us(exp_end) - ts_to_us(frame_start) > 1000000) {
printf("%lld bytes sent at %ld second, rate ",
(long long int)rate_tot,
(ts_to_us(exp_end) - ts_to_us(exp_start)) /
1000000);
print_bw_nicely(
rate_acc,
ts_to_us(exp_end) - ts_to_us(frame_start));
printf("\n");
rate_acc = 0;
frame_start.tv_sec = exp_end.tv_sec;
frame_start.tv_nsec = exp_end.tv_nsec;
}
if(sent < 0) {
printf("Error %d, could not send datagram!\n", sent);
break;
}
rate_acc += sent;
rate_tot += sent;
if(ts_to_s(exp_end) - ts_to_s(exp_start) > bw_time) {
break;
}
}
printf("--- %s bandwidth statistics ---\n", addr);
printf("%lld bytes transmitted in %ld seconds, rate ",
(long long int)rate_tot,
ts_to_s(exp_end) - ts_to_s(exp_start));
print_bw_nicely(
rate_tot,
ts_to_us(exp_end) - ts_to_us(exp_start));
printf("\n");
out:
/* Close da socket. */
close(sock);
}
void launch_server() {
struct sockaddr_in srvaddr = {0};
struct timespec exp_start = {0};
struct timespec frame_start = {0};
struct timespec frame_end = {0};
int64_t rate_acc = 0;
int64_t rate_tot = 0;
char buf[1024] = {0};
int flags = 0;
socklen_t len = 0;
int recv = 0;
/* Open da socket. */
int sock = socket(PF_INET, SOCK_DGRAM, 0);
if(sock < 0) {
printf("Error while creating the socket!\n");
return;
}
srvaddr.sin_family = AF_INET;
srvaddr.sin_port = htons(atoi(port));
srvaddr.sin_addr.s_addr = inet_addr(addr);
if(bind(
sock,
(struct sockaddr *)&srvaddr,
sizeof(struct sockaddr_in))) {
printf("Failed to bind the socket.\n");
close(sock);
return;
}
len = sizeof(struct sockaddr_in);
/* Non-blocking one... */
flags = fcntl(sock, F_GETFL);
flags |= O_NONBLOCK;
fcntl(sock, F_SETFL, flags);
clock_gettime(CLOCK_REALTIME, &exp_start);
clock_gettime(CLOCK_REALTIME, &frame_start);
while(!stop) {
recv = recvfrom(
sock,
buf, 1024,
0,
(struct sockaddr *)&srvaddr,
&len);
/* Report it every second. */
clock_gettime(CLOCK_REALTIME, &frame_end);
if(ts_to_s(frame_end) - ts_to_s(frame_start) >= 1) {
if(rate_acc > 0) {
printf("%lld bytes received, rate ",
(long long int)rate_tot);
print_bw_nicely(
(long long int)rate_acc,
ts_to_us(frame_end) -
ts_to_us(frame_start));
printf("\n");
rate_acc = 0;
frame_start.tv_sec = frame_end.tv_sec;
frame_start.tv_nsec = frame_end.tv_nsec;
}
}
if(recv < 0) {
continue;
}
rate_acc += recv;
rate_tot += recv;
}
/* Close da socket. */
close(sock);
}