/**
* Print info about a node.
*
* \param[in] node Node to print info about
*/
static void
dump_node(const sup_node_t *node)
{
char seen_str[EXA_MAX_NODES_NUMBER + 1];
char clique_str[EXA_MAX_NODES_NUMBER + 1];
if (node == NULL)
return;
exa_nodeset_to_bin(&node->view.nodes_seen, seen_str);
exa_nodeset_to_bin(&node->view.clique, clique_str);
__debug("%c%c%u: (state=%s seen=%s clique=%s coord=%u accepted=%u committed=%u)",
self_sees(node) ? ' ' : '-', node->id == self->id ? '*' : ' ',
node->id, sup_state_name(node->view.state),
seen_str, clique_str,
node->view.coord,
node->view.accepted, node->view.committed);
}
/**
* Print a view in a file.
*
* \param[in] view View to print
* \param file File to print to
*/
void
sup_view_debug(const sup_view_t *view)
{
char seen_str[EXA_MAX_NODES_NUMBER + 1];
char clique_str[EXA_MAX_NODES_NUMBER + 1];
if (view == NULL)
{
__debug("(null view)");
return;
}
exa_nodeset_to_bin(&view->nodes_seen, seen_str);
exa_nodeset_to_bin(&view->clique, clique_str);
__debug("state=%s seen=%s num_seen=%u clique=%s coord=%u"
" accepted=%u committed=%u", sup_state_name(view->state),
seen_str, view->num_seen, clique_str, view->coord,
view->accepted, view->committed);
}
/**
* Before sending a ping.
*/
static void
sup_pre_ping(void)
{
update_last_seen();
#ifdef USE_YAOURT
if (yaourt_event_wait(EXAMSG_CSUPD_ID, "sup_pre_ping") != 0)
self_view_changed = true;
#endif
if (self_view_changed || other_view_changed)
{
exa_nodeset_t new_clique;
bool clique_changed;
exa_nodeid_t coord;
__trace("RECALCULATING CLIQUE");
sup_clique_compute(&cluster, &new_clique);
clique_changed = !exa_nodeset_equals(&new_clique, &self->view.clique);
if (clique_changed)
{
exa_nodeset_copy(&self->view.clique, &new_clique);
coord = exa_nodeset_first(&self->view.clique);
if (coord != self->view.coord)
{
__trace("new coord: %u", coord);
self->view.coord = coord;
}
}
#ifdef DEBUG
{
char clique_str[EXA_MAX_NODES_NUMBER + 1];
exa_nodeset_to_bin(&self->view.clique, clique_str);
__trace("Clique: %s %s", clique_str, clique_changed ? "CHANGED" : "");
}
#endif
}
if (self_view_changed || other_view_changed)
{
__trace("*** SUP_MSHIP_CHANGE ***");
set_state(SUP_STATE_CHANGE);
}
#ifdef WITH_TRACE
dump_view(0);
#endif
}
/**
* Commit the previously accepted clique.
*/
static void
commit_clique(void)
{
#ifdef DEBUG
char clique_str[EXA_MAX_NODES_NUMBER + 1];
exa_nodeset_to_bin(&accepted_clique, clique_str);
__debug("@@@ delivering membership %u:%s to Evmgr", self->view.accepted,
clique_str);
#endif
EXA_ASSERT(self_sees(self));
sup_deliver(self->view.accepted, &accepted_clique);
set_state(SUP_STATE_COMMIT);
self->view.committed = self->view.accepted;
}
/**
* Dump our view of the cluster in the logs.
*/
static void
dump_view(int sig)
{
exa_nodeid_t node_id;
char known_str[EXA_MAX_NODES_NUMBER + 1];
if (sig)
__debug("got signal %d, dumping view", sig);
__debug("incarnation: %hu", self->incarnation);
exa_nodeset_to_bin(&cluster.known_nodes, known_str);
__debug("num_nodes: %u known_nodes: %s", cluster.num_nodes, known_str);
for (node_id = 0; node_id < EXA_MAX_NODES_NUMBER; node_id++)
if (exa_nodeset_contains(&cluster.known_nodes, node_id))
dump_node(sup_cluster_node(&cluster, node_id));
}