3 XBT_LOG_NEW_DEFAULT_CATEGORY(msg_peer,
4 "Messages specific for the peer");
6 /*******************************************************
8 *******************************************************/
10 void peer_init_chain(peer_t peer, message_t msg)
12 peer->prev = msg->prev_hostname;
13 peer->next = msg->next_hostname;
17 static void peer_forward_msg(peer_t peer, message_t msg)
19 msg_task_t task = task_message_data_new(peer->me, peer->next, NULL, msg->data_length);
20 msg_comm_t comm = NULL;
21 XBT_DEBUG("Sending (isend) from %s into mailbox %s", peer->me, peer->next);
22 comm = MSG_task_isend(task, peer->next);
23 queue_pending_connection(comm, peer->pending_sends);
26 int peer_execute_task(peer_t peer, msg_task_t task)
29 message_t msg = MSG_task_get_data(task);
31 XBT_DEBUG("Peer %s got message of type %d\n", peer->me, msg->type);
33 case MESSAGE_BUILD_CHAIN:
34 peer_init_chain(peer, msg);
36 case MESSAGE_SEND_DATA:
37 xbt_assert(peer->init, "peer_execute_task() failed: got msg_type %d before initialization", msg->type);
38 if (peer->next != NULL)
39 peer_forward_msg(peer, msg);
41 peer->bytes += msg->data_length;
43 case MESSAGE_END_DATA:
44 xbt_assert(peer->init, "peer_execute_task() failed: got msg_type %d before initialization", msg->type);
46 XBT_DEBUG("%d pieces receieved", peer->pieces);
50 MSG_task_execute(task);
55 msg_error_t peer_wait_for_message(peer_t peer)
58 msg_comm_t comm = NULL;
59 msg_task_t task = NULL;
64 comm = MSG_task_irecv(&task, peer->me);
65 queue_pending_connection(comm, peer->pending_recvs);
67 if ((idx = MSG_comm_waitany(peer->pending_recvs)) != -1) {
68 comm = xbt_dynar_get_as(peer->pending_recvs, idx, msg_comm_t);
69 status = MSG_comm_get_status(comm);
70 XBT_DEBUG("peer_wait_for_message: error code = %d", status);
71 xbt_assert(status == MSG_OK, "peer_wait_for_message() failed");
73 task = MSG_comm_get_task(comm);
74 MSG_comm_destroy(comm);
75 xbt_dynar_cursor_rm(peer->pending_recvs, (unsigned int*)&idx);
76 done = peer_execute_task(peer, task);
78 task_message_delete(task);
81 process_pending_connections(peer->pending_sends);
87 void peer_init(peer_t p, int argc, char *argv[])
95 p->pending_recvs = xbt_dynar_new(sizeof(msg_comm_t), NULL);
96 p->pending_sends = xbt_dynar_new(sizeof(msg_comm_t), NULL);
97 p->me = xbt_new(char, HOSTNAME_LENGTH);
98 /* Set mailbox name: use host number from argv or hostname if no argument given */
100 snprintf(p->me, HOSTNAME_LENGTH, "host%s", argv[1]);
102 strncpy(p->me, MSG_host_get_name(MSG_host_self()), HOSTNAME_LENGTH);
106 void peer_shutdown(peer_t p)
108 float start_time = MSG_get_clock();
109 float end_time = start_time + PEER_SHUTDOWN_DEADLINE;
111 XBT_DEBUG("Waiting for sends to finish before shutdown...");
112 /* MSG_comm_waitall(p->pending_sends, PEER_SHUTDOWN_DEADLINE); FIXME: this doesn't work */
113 while (xbt_dynar_length(p->pending_sends) && MSG_get_clock() < end_time) {
114 process_pending_connections(p->pending_sends);
115 MSG_process_sleep(1);
118 xbt_assert(xbt_dynar_length(p->pending_sends) == 0, "Shutdown failed, sends still pending after deadline");
121 void peer_delete(peer_t p)
123 xbt_dynar_free(&p->pending_recvs);
124 xbt_dynar_free(&p->pending_sends);
130 void peer_print_stats(peer_t p, float elapsed_time)
132 XBT_INFO("### %f %llu bytes (Avg %f MB/s); copy finished (simulated).", elapsed_time, p->bytes, p->bytes / 1024.0 / 1024.0 / elapsed_time);
136 int peer(int argc, char *argv[])
138 float start_time, end_time;
139 peer_t p = xbt_new(s_peer_t, 1);
144 peer_init(p, argc, argv);
145 start_time = MSG_get_clock();
146 status = peer_wait_for_message(p);
148 end_time = MSG_get_clock();
149 peer_print_stats(p, end_time - start_time);
153 } /* end_of_receiver */