static int server(int argc, char *argv[])
{
msg_task_t task = MSG_task_create("a", 0, 0, (char*)"Some data");
MSG_task_isend(task, "mailbox");
xbt_assert(MSG_task_listen("mailbox")); // True (1)
XBT_INFO("Task listen works on regular mailboxes");
task = NULL;
MSG_task_receive(&task, "mailbox");
xbt_assert(!strcmp("Some data", MSG_task_get_data(task)), "Data received: %s", (char*)MSG_task_get_data(task));
MSG_task_destroy(task);
XBT_INFO("Data successfully received from regular mailbox");
MSG_mailbox_set_async("mailbox2");
task = MSG_task_create("b", 0, 0, (char*)"More data");
MSG_task_isend(task, "mailbox2");
xbt_assert(MSG_task_listen("mailbox2")); // used to break.
XBT_INFO("Task listen works on asynchronous mailboxes");
task = NULL;
MSG_task_receive(&task, "mailbox2");
xbt_assert(!strcmp("More data", MSG_task_get_data(task)));
MSG_task_destroy(task);
XBT_INFO("Data successfully received from asynchronous mailbox");
return 0;
}
/** Emitter function */
int master(int argc, char *argv[])
{
int workers_count = 0;
msg_host_t *workers = NULL;
msg_task_t *todo = NULL;
msg_host_t host_self = MSG_host_self();
char *master_name = (char *) MSG_host_get_name(host_self);
double task_comp_size = 0;
double task_comm_size = 0;
char channel[1024];
double timeout = -1;
int i;
TRACE_category(master_name);
_XBT_GNUC_UNUSED int res = sscanf(argv[1], "%lg", &timeout);
xbt_assert(res,"Invalid argument %s\n", argv[1]);
res = sscanf(argv[2], "%lg", &task_comp_size);
xbt_assert(res, "Invalid argument %s\n", argv[2]);
res = sscanf(argv[3], "%lg", &task_comm_size);
xbt_assert(res, "Invalid argument %s\n", argv[3]);
{ /* Process organisation */
workers_count = MSG_get_host_number();
workers = xbt_dynar_to_array(MSG_hosts_as_dynar());
for (i = 0; i < workers_count; i++)
if(host_self == workers[i]) {
workers[i] = workers[workers_count-1];
workers_count--;
break;
}
for (i = 0; i < workers_count; i++)
MSG_process_create("worker", worker, master_name, workers[i]);
}
XBT_INFO("Got %d workers and will send tasks for %g seconds!",
workers_count, timeout);
xbt_dynar_t idle_hosts = xbt_dynar_new(sizeof(msg_host_t), NULL);
msg_host_t request_host = NULL;
for (i = 0; 1;) {
char sprintf_buffer[64];
msg_task_t task = NULL;
msg_task_t request = NULL;
while(MSG_task_listen(master_name)) {
res = MSG_task_receive(&(request),master_name);
xbt_assert(res == MSG_OK, "MSG_task_receive failed");
request_host = MSG_task_get_data(request);
xbt_dynar_push(idle_hosts, &request_host);
MSG_task_destroy(request);
request = NULL;
}
if(MSG_get_clock()>timeout) {
if(xbt_dynar_length(idle_hosts) == workers_count) break;
else {
MSG_process_sleep(.1);
continue;
}
}
if(xbt_dynar_length(idle_hosts)<=0) {
/* No request. Let's wait... */
MSG_process_sleep(.1);
continue;
}
sprintf(sprintf_buffer, "Task_%d", i);
task = MSG_task_create(sprintf_buffer, task_comp_size, task_comm_size,
NULL);
MSG_task_set_category(task, master_name);
xbt_dynar_shift(idle_hosts, &request_host);
build_channel_name(channel,master_name, MSG_host_get_name(request_host));
XBT_DEBUG("Sending \"%s\" to channel \"%s\"", task->name, channel);
MSG_task_send(task, channel);
XBT_DEBUG("Sent");
i++;
}
int task_num = i;
XBT_DEBUG
("All tasks have been dispatched. Let's tell everybody the computation is over.");
for (i = 0; i < workers_count; i++) {
msg_task_t finalize = MSG_task_create("finalize", 0, 0, FINALIZE);
MSG_task_send(finalize, build_channel_name(channel,master_name,
MSG_host_get_name(workers[i % workers_count])));
}
XBT_INFO("Sent %d tasks in total!", task_num);
free(workers);
free(todo);
return 0;
} /* end_of_master */
