static void boundary_node2 (GtsGNode * n, GtsGraphBisection * bg)
{
GSList * i = GTS_SLIST_CONTAINER (n)->items;
while (i) {
GtsGNode * n1 = GTS_GNODE_NEIGHBOR (n, i->data);
if (gts_containee_is_contained (GTS_CONTAINEE (n1),
GTS_CONTAINER (bg->g1))) {
g_hash_table_insert (bg->bg2, n, n1);
return;
}
i = i->next;
}
}
/* Same as in source.c used here to obtain viscosity (make it more general?) */
static GfsSourceDiffusion * source_diffusion_viscosity (GfsVariable * v)
{
if (v->sources) {
GSList * i = GTS_SLIST_CONTAINER (v->sources)->items;
while (i) {
GtsObject * o = i->data;
if (GFS_IS_SOURCE_DIFFUSION (o))
return GFS_SOURCE_DIFFUSION (o);
i = i->next;
}
}
return NULL;
}
static void gfs_source_darcy_read (GtsObject ** o, GtsFile * fp)
{
(* GTS_OBJECT_CLASS (gfs_source_darcy_class ())->parent_class->read) (o, fp);
if (fp->type == GTS_ERROR)
return;
printf("\ntesting1\n");
/*Check if source darcy has already been added or not*/
FttComponent c;
for (c = 0; c < FTT_DIMENSION; c++) {
GfsVariable * v = GFS_SOURCE_VELOCITY (*o)->v[c];
if (v->sources) {
GSList * i = GTS_SLIST_CONTAINER (v->sources)->items;
while (i) {
if (i->data != *o && GFS_IS_SOURCE_DARCY (i->data)) {
gts_file_error (fp, "variable '%s' cannot have multiple Darcy source terms", v->name);
return;
}
i = i->next;
}
}
}
printf("\ntesting2\n");
GfsDomain * domain = GFS_DOMAIN (gfs_object_simulation (*o));
GfsSourceDarcy * s = GFS_SOURCE_DARCY (*o);
printf("\ntesting3\n");
s->darcycoeff = gfs_function_new (gfs_function_class (), 0.);
gfs_function_read (s->darcycoeff, gfs_object_simulation (s), fp);
printf("\ntesting4\n");
if (fp->type != '\n') {
s->forchhicoeff = gfs_function_new (gfs_function_class (), 0.);
gfs_function_read (s->forchhicoeff, gfs_object_simulation (s), fp);
}
if (s->beta < 1.)
for (c = 0; c < FTT_DIMENSION; c++)
s->u[c] = gfs_temporary_variable (domain);
else {
GFS_SOURCE_GENERIC (s)->centered_value = NULL;
GFS_SOURCE_GENERIC (s)->mac_value = NULL;
}
printf("\ntesting5\n");
}
GfsSourceDarcy * gfs_has_source_darcy (GfsDomain * domain)
{
GfsVariable * v;
g_return_val_if_fail (domain != NULL, NULL);
v = gfs_variable_from_name (domain->variables, "U");
g_return_val_if_fail (v != NULL, NULL);
if (v->sources) {
GSList * i = GTS_SLIST_CONTAINER (v->sources)->items;
while (i) {
if (GFS_IS_SOURCE_DARCY (i->data))
return i->data;
i = i->next;
}
}
return NULL;
}
static void update_neighbors (GtsGNode * n, GtsGraphBisection * bg,
GtsEHeap * h1, GtsEHeap * h2)
{
GSList * i;
i = GTS_SLIST_CONTAINER (n)->items;
while (i) {
GtsGNode * n1 = GTS_GNODE_NEIGHBOR (n, i->data);
if (gts_containee_is_contained (GTS_CONTAINEE (n1),
GTS_CONTAINER (bg->g))) {
GtsEHeap * h;
GtsGraph * g1, * g2;
GHashTable * bg1;
if (gts_containee_is_contained (GTS_CONTAINEE (n1),
GTS_CONTAINER (bg->g1))) {
h = h1;
g1 = bg->g1;
g2 = bg->g2;
bg1 = bg->bg1;
}
else {
h = h2;
g1 = bg->g2;
g2 = bg->g1;
bg1 = bg->bg2;
}
g_hash_table_remove (bg1, n1);
if (h && GTS_OBJECT (n1)->reserved && GTS_OBJECT (n1)->reserved != n1) {
gts_eheap_remove (h, GTS_OBJECT (n1)->reserved);
GTS_OBJECT (n1)->reserved = NULL;
}
if (gts_gnode_degree (n1, g2)) {
g_hash_table_insert (bg1, n1, n1);
if (h && GTS_OBJECT (n1)->reserved != n1)
GTS_OBJECT (n1)->reserved = gts_eheap_insert (h, n1);
}
}
i = i->next;
}
}
static gdouble node_cost (GtsGNode * n, gpointer * data)
{
GtsGraph * g = data[0];
GtsGraph * g1 = data[1];
GSList * i = GTS_SLIST_CONTAINER (n)->items;
gdouble cost = 0.;
while (i) {
GtsGEdge * e = i->data;
GtsGNode * n1 = GTS_GNODE_NEIGHBOR (n, e);
if (gts_containee_is_contained (GTS_CONTAINEE (n1), GTS_CONTAINER (g))) {
if (gts_containee_is_contained (GTS_CONTAINEE (n1), GTS_CONTAINER (g1)))
cost -= gts_gedge_weight (e);
else
cost += gts_gedge_weight (e);
}
i = i->next;
}
return cost;
}
/**
* gts_graph_bisection_kl_refine:
* @bg: a #GtsGraphBisection.
* @mmax: the maximum number of unsuccessful successive moves.
*
* An implementation of the simplified Kernighan-Lin algorithm for
* graph bisection refinement as described in Karypis and Kumar
* (1997).
*
* The algorithm stops if @mmax consecutive modes do not lead to a
* decrease in the number of edges cut. This last @mmax moves are
* undone.
*
* Returns: the decrease in the weight of the edges cut by the bisection.
*/
gdouble gts_graph_bisection_kl_refine (GtsGraphBisection * bg,
guint mmax)
{
GtsEHeap * h1, * h2;
GtsGNode * n;
guint nm = 0, i;
GtsGNode ** moves;
gdouble bestcost = 0., totalcost = 0., best_balance;
g_return_val_if_fail (bg != NULL, 0.);
g_return_val_if_fail (mmax > 0, 0.);
h1 = gts_eheap_new ((GtsKeyFunc) node_move_cost1, bg);
gts_eheap_freeze (h1);
gts_container_foreach (GTS_CONTAINER (bg->g1), (GtsFunc) build_heap, h1);
gts_eheap_thaw (h1);
h2 = gts_eheap_new ((GtsKeyFunc) node_move_cost2, bg);
gts_eheap_freeze (h2);
gts_container_foreach (GTS_CONTAINER (bg->g2), (GtsFunc) build_heap, h2);
gts_eheap_thaw (h2);
moves = g_malloc (sizeof (GtsGNode *)*mmax);
best_balance = fabs (gts_graph_weight (bg->g1) - gts_graph_weight (bg->g2));
do {
GtsGraph * g1, * g2;
gdouble cost;
if (gts_graph_weight (bg->g1) > gts_graph_weight (bg->g2)) {
n = gts_eheap_remove_top (h1, &cost);
g1 = bg->g1;
g2 = bg->g2;
}
else {
n = gts_eheap_remove_top (h2, &cost);
g1 = bg->g2;
g2 = bg->g1;
}
if (n) {
GSList * i;
GTS_OBJECT (n)->reserved = NULL;
gts_container_add (GTS_CONTAINER (g2), GTS_CONTAINEE (n));
gts_container_remove (GTS_CONTAINER (g1), GTS_CONTAINEE (n));
totalcost += cost;
if (totalcost < bestcost) {
bestcost = totalcost;
nm = 0;
}
else if (totalcost == bestcost) {
gdouble balance = fabs (gts_graph_weight (g1) - gts_graph_weight (g2));
if (balance < best_balance) {
best_balance = balance;
nm = 0;
}
}
else
moves[nm++] = n;
i = GTS_SLIST_CONTAINER (n)->items;
while (i) {
GtsGNode * n1 = GTS_GNODE_NEIGHBOR (n, i->data);
if (GTS_OBJECT (n1)->reserved &&
gts_containee_is_contained (GTS_CONTAINEE (n1),
GTS_CONTAINER (bg->g))) {
GtsEHeap * h =
gts_containee_is_contained (GTS_CONTAINEE (n1),
GTS_CONTAINER (bg->g1)) ? h1 : h2;
gts_eheap_remove (h, GTS_OBJECT (n1)->reserved);
GTS_OBJECT (n1)->reserved = gts_eheap_insert (h, n1);
}
i = i->next;
}
}
} while (n && nm < mmax);
gts_eheap_foreach (h1, (GFunc) gts_object_reset_reserved, NULL);
gts_eheap_foreach (h2, (GFunc) gts_object_reset_reserved, NULL);
gts_eheap_destroy (h1);
gts_eheap_destroy (h2);
/* undo last nm moves */
for (i = 0; i < nm; i++) {
GtsGNode * n = moves[i];
GtsGraph * g1 =
gts_containee_is_contained (GTS_CONTAINEE (n),
GTS_CONTAINER (bg->g1)) ? bg->g1 : bg->g2;
GtsGraph * g2 = g1 == bg->g1 ? bg->g2 : bg->g1;
gts_container_add (GTS_CONTAINER (g2), GTS_CONTAINEE (n));
gts_container_remove (GTS_CONTAINER (g1), GTS_CONTAINEE (n));
}
g_free (moves);
return bestcost;
}
