+++ /dev/null
-/* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
- * All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "surf_routing_private.h"
-
-/* Global vars */
-extern routing_platf_t routing_platf;
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_floyd, surf, "Routing part of surf");
-
-#define TO_FLOYD_COST(i,j) (as->cost_table)[(i)+(j)*table_size]
-#define TO_FLOYD_PRED(i,j) (as->predecessor_table)[(i)+(j)*table_size]
-#define TO_FLOYD_LINK(i,j) (as->link_table)[(i)+(j)*table_size]
-
-/* Routing model structure */
-
-typedef struct {
- s_as_t generic_routing;
- /* vars for calculate the floyd algorith. */
- int *predecessor_table;
- double *cost_table;
- sg_platf_route_cbarg_t *link_table;
-} s_as_floyd_t, *as_floyd_t;
-
-static void floyd_get_route_and_latency(AS_t asg, sg_routing_edge_t src, sg_routing_edge_t dst,
- sg_platf_route_cbarg_t res, double *lat);
-
-/* Business methods */
-static xbt_dynar_t floyd_get_onelink_routes(AS_t asg)
-{
- xbt_dynar_t ret = xbt_dynar_new(sizeof(onelink_t), xbt_free);
- sg_platf_route_cbarg_t route = xbt_new0(s_sg_platf_route_cbarg_t, 1);
- route->link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
-
- int src,dst;
- sg_routing_edge_t src_elm, dst_elm;
- int table_size = xbt_dynar_length(asg->index_network_elm);
- for(src=0; src < table_size; src++) {
- for(dst=0; dst< table_size; dst++) {
- xbt_dynar_reset(route->link_list);
- src_elm = xbt_dynar_get_as(asg->index_network_elm,src,sg_routing_edge_t);
- dst_elm = xbt_dynar_get_as(asg->index_network_elm,dst,sg_routing_edge_t);
- floyd_get_route_and_latency(asg, src_elm, dst_elm, route, NULL);
-
- if (xbt_dynar_length(route->link_list) == 1) {
- void *link = *(void **) xbt_dynar_get_ptr(route->link_list, 0);
- onelink_t onelink = xbt_new0(s_onelink_t, 1);
- onelink->link_ptr = link;
- if (asg->hierarchy == SURF_ROUTING_BASE) {
- onelink->src = src_elm;
- onelink->dst = dst_elm;
- } else if (asg->hierarchy == SURF_ROUTING_RECURSIVE) {
- onelink->src = route->gw_src;
- onelink->dst = route->gw_dst;
- }
- xbt_dynar_push(ret, &onelink);
- }
- }
- }
-
- return ret;
-}
-
-static void floyd_get_route_and_latency(AS_t asg, sg_routing_edge_t src, sg_routing_edge_t dst,
- sg_platf_route_cbarg_t res, double *lat)
-{
-
- /* set utils vars */
- as_floyd_t as = (as_floyd_t)asg;
- size_t table_size = xbt_dynar_length(asg->index_network_elm);
-
- generic_src_dst_check(asg, src, dst);
-
- /* create a result route */
- xbt_dynar_t route_stack = xbt_dynar_new(sizeof(sg_platf_route_cbarg_t), NULL);
- int pred;
- int cur = dst->id;
- do {
- pred = TO_FLOYD_PRED(src->id, cur);
- if (pred == -1)
- THROWF(arg_error, 0, "No route from '%s' to '%s'", src->name, dst->name);
- xbt_dynar_push_as(route_stack, sg_platf_route_cbarg_t, TO_FLOYD_LINK(pred, cur));
- cur = pred;
- } while (cur != src->id);
-
- if (asg->hierarchy == SURF_ROUTING_RECURSIVE) {
- res->gw_src = xbt_dynar_getlast_as(route_stack, sg_platf_route_cbarg_t)->gw_src;
- res->gw_dst = xbt_dynar_getfirst_as(route_stack, sg_platf_route_cbarg_t)->gw_dst;
- }
-
- sg_routing_edge_t prev_dst_gw = NULL;
- while (!xbt_dynar_is_empty(route_stack)) {
- sg_platf_route_cbarg_t e_route = xbt_dynar_pop_as(route_stack, sg_platf_route_cbarg_t);
- xbt_dynar_t links;
- sg_routing_link_t link;
- unsigned int cpt;
-
- if (asg->hierarchy == SURF_ROUTING_RECURSIVE && prev_dst_gw != NULL
- && strcmp(prev_dst_gw->name, e_route->gw_src->name)) {
- routing_get_route_and_latency(prev_dst_gw, e_route->gw_src,
- &res->link_list, lat);
- }
-
- links = e_route->link_list;
- xbt_dynar_foreach(links, cpt, link) {
- xbt_dynar_push_as(res->link_list, sg_routing_link_t, link);
- if (lat)
- *lat += surf_network_model->extension.network.get_link_latency(link);
- }
-
- prev_dst_gw = e_route->gw_dst;
- }
- xbt_dynar_free(&route_stack);
-}
-
-static void floyd_finalize(AS_t rc)
-{
- as_floyd_t as = (as_floyd_t) rc;
- int i, j;
- size_t table_size;
- if (as) {
- table_size = xbt_dynar_length(as->generic_routing.index_network_elm);
- /* Delete link_table */
- for (i = 0; i < table_size; i++)
- for (j = 0; j < table_size; j++)
- generic_free_route(TO_FLOYD_LINK(i, j));
- xbt_free(as->link_table);
- /* Delete bypass dict */
- xbt_dict_free(&as->generic_routing.bypassRoutes);
- /* Delete predecessor and cost table */
- xbt_free(as->predecessor_table);
- xbt_free(as->cost_table);
-
- model_generic_finalize(rc);
- }
-}
-
-AS_t model_floyd_create(void)
-{
- as_floyd_t new_component = (as_floyd_t)model_generic_create_sized(sizeof(s_as_floyd_t));
- new_component->generic_routing.parse_route = model_floyd_parse_route;
- new_component->generic_routing.parse_ASroute = model_floyd_parse_route;
- new_component->generic_routing.get_route_and_latency = floyd_get_route_and_latency;
- new_component->generic_routing.get_onelink_routes =
- floyd_get_onelink_routes;
- new_component->generic_routing.get_graph = generic_get_graph;
- new_component->generic_routing.finalize = floyd_finalize;
- return (AS_t)new_component;
-}
-
-void model_floyd_end(AS_t current_routing)
-{
-
- as_floyd_t as =
- ((as_floyd_t) current_routing);
-
- unsigned int i, j, a, b, c;
-
- /* set the size of table routing */
- size_t table_size = xbt_dynar_length(as->generic_routing.index_network_elm);
-
- if(!as->link_table)
- {
- /* Create Cost, Predecessor and Link tables */
- as->cost_table = xbt_new0(double, table_size * table_size); /* link cost from host to host */
- as->predecessor_table = xbt_new0(int, table_size * table_size); /* predecessor host numbers */
- as->link_table = xbt_new0(sg_platf_route_cbarg_t, table_size * table_size); /* actual link between src and dst */
-
- /* Initialize costs and predecessors */
- for (i = 0; i < table_size; i++)
- for (j = 0; j < table_size; j++) {
- TO_FLOYD_COST(i, j) = DBL_MAX;
- TO_FLOYD_PRED(i, j) = -1;
- TO_FLOYD_LINK(i, j) = NULL; /* fixed, missing in the previous version */
- }
- }
-
- /* Add the loopback if needed */
- if (routing_platf->p_loopback && current_routing->p_hierarchy == SURF_ROUTING_BASE) {
- for (i = 0; i < table_size; i++) {
- sg_platf_route_cbarg_t e_route = TO_FLOYD_LINK(i, i);
- if (!e_route) {
- e_route = xbt_new0(s_sg_platf_route_cbarg_t, 1);
- e_route->gw_src = NULL;
- e_route->gw_dst = NULL;
- e_route->link_list = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
- xbt_dynar_push(e_route->link_list, &routing_platf->p_loopback);
- TO_FLOYD_LINK(i, i) = e_route;
- TO_FLOYD_PRED(i, i) = i;
- TO_FLOYD_COST(i, i) = 1;
- }
- }
- }
- /* Calculate path costs */
- for (c = 0; c < table_size; c++) {
- for (a = 0; a < table_size; a++) {
- for (b = 0; b < table_size; b++) {
- if (TO_FLOYD_COST(a, c) < DBL_MAX && TO_FLOYD_COST(c, b) < DBL_MAX) {
- if (TO_FLOYD_COST(a, b) == DBL_MAX ||
- (TO_FLOYD_COST(a, c) + TO_FLOYD_COST(c, b) <
- TO_FLOYD_COST(a, b))) {
- TO_FLOYD_COST(a, b) =
- TO_FLOYD_COST(a, c) + TO_FLOYD_COST(c, b);
- TO_FLOYD_PRED(a, b) = TO_FLOYD_PRED(c, b);
- }
- }
- }
- }
- }
-}
-
-static int floyd_pointer_resource_cmp(const void *a, const void *b) {
- return a != b;
-}
-
-//FIXME: kill dupplicates in next function with full routing
-
-void model_floyd_parse_route(AS_t rc, sg_platf_route_cbarg_t route)
-{
- char *src = (char*)(route->src);
- char *dst = (char*)(route->dst);
-
- int as_route = 0;
- as_floyd_t as = (as_floyd_t) rc;
-
- /* set the size of table routing */
- size_t table_size = xbt_dynar_length(rc->index_network_elm);
- sg_routing_edge_t src_net_elm, dst_net_elm;
-
- src_net_elm = sg_routing_edge_by_name_or_null(src);
- dst_net_elm = sg_routing_edge_by_name_or_null(dst);
-
- xbt_assert(src_net_elm, "Network elements %s not found", src);
- xbt_assert(dst_net_elm, "Network elements %s not found", dst);
-
- if(!as->link_table)
- {
- int i,j;
- /* Create Cost, Predecessor and Link tables */
- as->cost_table = xbt_new0(double, table_size * table_size); /* link cost from host to host */
- as->predecessor_table = xbt_new0(int, table_size * table_size); /* predecessor host numbers */
- as->link_table = xbt_new0(sg_platf_route_cbarg_t, table_size * table_size); /* actual link between src and dst */
-
- /* Initialize costs and predecessors */
- for (i = 0; i < table_size; i++)
- for (j = 0; j < table_size; j++) {
- TO_FLOYD_COST(i, j) = DBL_MAX;
- TO_FLOYD_PRED(i, j) = -1;
- TO_FLOYD_LINK(i, j) = NULL; /* fixed, missing in the previous version */
- }
- }
- if(!route->gw_dst && !route->gw_src)
- XBT_DEBUG("Load Route from \"%s\" to \"%s\"", src, dst);
- else{
- as_route = 1;
- XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", src,
- route->gw_src->name, dst, route->gw_dst->name);
- if(route->gw_dst->rc_type == SURF_NETWORK_ELEMENT_NULL)
- xbt_die("The dst_gateway '%s' does not exist!",route->gw_dst->name);
- if(route->gw_src->rc_type == SURF_NETWORK_ELEMENT_NULL)
- xbt_die("The src_gateway '%s' does not exist!",route->gw_src->name);
- }
-
- if(TO_FLOYD_LINK(src_net_elm->id, dst_net_elm->id))
- {
-
- char * link_name;
- unsigned int cpt;
- xbt_dynar_t link_route_to_test = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
- xbt_dynar_foreach(route->link_list,cpt,link_name)
- {
- void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
- xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
- xbt_dynar_push(link_route_to_test,&link);
- }
- xbt_assert(!xbt_dynar_compare(
- (void*)TO_FLOYD_LINK(src_net_elm->id, dst_net_elm->id)->link_list,
- (void*)link_route_to_test,
- (int_f_cpvoid_cpvoid_t) floyd_pointer_resource_cmp),
- "The route between \"%s\" and \"%s\" already exists", src,dst);
- }
- else
- {
- TO_FLOYD_LINK(src_net_elm->id, dst_net_elm->id) =
- generic_new_extended_route(rc->hierarchy, route, 1);
- TO_FLOYD_PRED(src_net_elm->id, dst_net_elm->id) = src_net_elm->id;
- TO_FLOYD_COST(src_net_elm->id, dst_net_elm->id) =
- ((TO_FLOYD_LINK(src_net_elm->id, dst_net_elm->id))->link_list)->used; /* count of links, old model assume 1 */
- }
-
- if ( (route->symmetrical == TRUE && as_route == 0)
- || (route->symmetrical == TRUE && as_route == 1)
- )
- {
- if(TO_FLOYD_LINK(dst_net_elm->id, src_net_elm->id))
- {
- if(!route->gw_dst && !route->gw_src)
- XBT_DEBUG("See Route from \"%s\" to \"%s\"", dst, src);
- else
- XBT_DEBUG("See ASroute from \"%s(%s)\" to \"%s(%s)\"", dst,
- route->gw_src->name, src, route->gw_dst->name);
- char * link_name;
- unsigned int i;
- xbt_dynar_t link_route_to_test = xbt_dynar_new(sizeof(sg_routing_link_t), NULL);
- for(i=xbt_dynar_length(route->link_list) ;i>0 ;i--)
- {
- link_name = xbt_dynar_get_as(route->link_list,i-1,void *);
- void *link = xbt_lib_get_or_null(link_lib, link_name, SURF_LINK_LEVEL);
- xbt_assert(link,"Link : '%s' doesn't exists.",link_name);
- xbt_dynar_push(link_route_to_test,&link);
- }
- xbt_assert(!xbt_dynar_compare(
- (void*)TO_FLOYD_LINK(dst_net_elm->id, src_net_elm->id)->link_list,
- (void*)link_route_to_test,
- (int_f_cpvoid_cpvoid_t) floyd_pointer_resource_cmp),
- "The route between \"%s\" and \"%s\" already exists", src,dst);
- }
- else
- {
- if(route->gw_dst && route->gw_src)
- {
- sg_routing_edge_t gw_src = route->gw_src;
- sg_routing_edge_t gw_dst = route->gw_dst;
- route->gw_src = gw_dst;
- route->gw_dst = gw_src;
- }
-
- if(!route->gw_src && !route->gw_dst)
- XBT_DEBUG("Load Route from \"%s\" to \"%s\"", dst, src);
- else
- XBT_DEBUG("Load ASroute from \"%s(%s)\" to \"%s(%s)\"", dst,
- route->gw_src->name, src, route->gw_dst->name);
-
- TO_FLOYD_LINK(dst_net_elm->id, src_net_elm->id) =
- generic_new_extended_route(rc->hierarchy, route, 0);
- TO_FLOYD_PRED(dst_net_elm->id, src_net_elm->id) = dst_net_elm->id;
- TO_FLOYD_COST(dst_net_elm->id, src_net_elm->id) =
- ((TO_FLOYD_LINK(dst_net_elm->id, src_net_elm->id))->link_list)->used; /* count of links, old model assume 1 */
- }
- }
- xbt_dynar_free(&route->link_list);
-}
