unsigned room_sources = 0;
unsigned num_senders = 128;
+unsigned do_listen = 1;
+
+unsigned long long total_bytes_received = 0;
+pthread_mutex_t receive_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+unsigned long long total_bytes_sent = 0;
+pthread_mutex_t send_mutex = PTHREAD_MUTEX_INITIALIZER;
const static struct option longopts[] = {
{ "source-list", required_argument, NULL, 's' },
{ "destination-list", required_argument, NULL, 'd' },
{ "num-senders", required_argument, NULL, 'n' },
{ "port", required_argument, NULL, 'p' },
+ { "sender-only", no_argument, NULL, 'o' },
{ NULL, 0, NULL, 0 }
};
int option_index = 0;
for ( ;; ) {
- int c = getopt_long(argc, argv, "s:d:n:p:", longopts, &option_index);
+ int c = getopt_long(argc, argv, "s:d:n:p:o", longopts, &option_index);
switch (c) {
case 's':
read_ip_list(optarg, &sources, &num_sources, &room_sources);
case 'p':
port = atoi(optarg);
break;
+ case 'o':
+ do_listen = 0;
+ break;
case -1:
return; // end of argument list
default:
{
unsigned i;
int sock;
+ char buf[65536];
+ unsigned long long bytes_sent = 0;
+
+ for (i = 0; i < 65536; ++i)
+ buf[i] = rand() & 0xff;
for (i = 0; i < 1000; ++i) {
unsigned src_num = (unsigned)(num_sources * gen_uniform_random());
fprintf(stderr, "connected\n");
- // FIXME: send data here
+ while (num_bytes > 0) {
+ unsigned bytes_to_send = num_bytes;
+ unsigned ret;
+
+ if (bytes_to_send > 65536) {
+ bytes_to_send = 65536;
+ }
+
+ ret = send(sock, buf, bytes_to_send, MSG_NOSIGNAL);
+ if (ret == -1) {
+ perror("send()");
+ exit(1);
+ }
+
+ num_bytes -= ret;
+ bytes_sent += ret;
+
+ // update the central counter after every 1MB (8ms
+ // at gigabit speeds, should be enough) of sent data
+ if (bytes_sent > 1048576) {
+ pthread_mutex_lock(&send_mutex);
+ total_bytes_sent += bytes_sent;
+ pthread_mutex_unlock(&send_mutex);
+
+ bytes_sent = 0;
+ }
+ }
close(sock);
}
+
+ pthread_mutex_lock(&send_mutex);
+ total_bytes_sent += bytes_sent;
+ pthread_mutex_unlock(&send_mutex);
pthread_exit(0);
}
{
int sock = (int)arg;
char buf[65536];
+ unsigned long long bytes_received = 0;
+
+ fprintf(stderr, "Receiver started\n");
for ( ;; ) {
int ret = read(sock, buf, 65536);
if (ret == 0)
break;
- // FIXME: update stats here
+ // update the central counter after every 1MB (8ms
+ // at gigabit speeds, should be enough) of received data
+ if (bytes_received > 1048576) {
+ pthread_mutex_lock(&receive_mutex);
+ total_bytes_sent += bytes_received;
+ pthread_mutex_unlock(&receive_mutex);
+
+ bytes_received = 0;
+ }
}
if (close(sock) == -1) {
perror("close()");
exit(1);
}
+
+ pthread_mutex_lock(&receive_mutex);
+ total_bytes_received += bytes_received;
+ pthread_mutex_unlock(&receive_mutex);
pthread_exit(0);
}
+
+void *receiver_dispatcher(void *arg)
+{
+ int server_sock = (int)arg;
+ pthread_attr_t attr;
+
+ // FIXME: these do not really set errno
+ if (pthread_attr_init(&attr) != 0) {
+ perror("pthread_attr_init()");
+ exit(1);
+ }
+
+ if (pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN + 65536 + 0x4000) != 0) {
+ perror("pthread_attr_setstacksize");
+ exit(1);
+ }
+
+ if (pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0) {
+ perror("pthread_attr_setdetachstate");
+ exit(1);
+ }
+
+ /*
+ * Listen for incoming connections, spawning off one receiver
+ * thread for each (which will just gobble up the data until
+ * we're done).
+ */
+ for ( ;; ) {
+ struct sockaddr_in addr;
+ socklen_t addr_len = sizeof(addr);
+ pthread_t thread;
+
+ int sock = accept(server_sock, (struct sockaddr *)&addr, &addr_len);
+ if (sock == -1) {
+ perror("accept()");
+ exit(1);
+ }
+
+ if (pthread_create(&thread, &attr, receiver_worker, (void *)sock) != 0) {
+ perror("pthread_create()");
+ exit(1);
+ }
+ }
+}
int get_server_socket(unsigned short port)
{
fprintf(stderr, "Missing or empty source or destination host list. Aborting.\n");
}
- server_sock = get_server_socket(port);
+ if (do_listen) {
+ server_sock = get_server_socket(port);
+ }
printf("Sending data on port %u from %u sources to %u destinations.\n\n",
port, num_sources, num_destinations);
exit(1);
}
- // Fire off sender workers.
- for (i = 0; i < num_senders; ++i) {
- pthread_t thread;
+ if (pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED) != 0) {
+ perror("pthread_attr_setdetachstate");
+ exit(1);
+ }
- if (pthread_create(&thread, &attr, sender_worker, NULL) != 0) {
+ // Fire off the master receiver.
+ if (do_listen) {
+ pthread_t thread;
+ if (pthread_create(&thread, &attr, receiver_dispatcher, (void *)server_sock) != 0) {
perror("pthread_create()");
exit(1);
}
}
- /*
- * Listen for incoming connections, spawning off one receiver
- * thread for each (which will just gobble up the data until
- * we're done).
- */
- for ( ;; ) {
- struct sockaddr_in addr;
- socklen_t addr_len = sizeof(addr);
+ // Fire off sender workers.
+ for (i = 0; i < num_senders; ++i) {
pthread_t thread;
-
- int sock = accept(server_sock, (struct sockaddr *)&addr, &addr_len);
- if (sock == -1) {
- perror("accept()");
- exit(1);
- }
-
- if (pthread_create(&thread, &attr, receiver_worker, (void *)sock) != 0) {
+
+ if (pthread_create(&thread, &attr, sender_worker, NULL) != 0) {
perror("pthread_create()");
exit(1);
}
}
+ sleep(3600);
+
exit(0);
}
projects / jam / blobdiff