+/* $Id$ */
+
+/* Copyright (c) 2005 Henri Casanova. 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 "network_gtnets_private.h"
+
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_network_gtnets);
+
+/* surf_network_resource_t surf_network_resource = NULL; */
+static xbt_dict_t network_link_set = NULL;
+
+/* xbt_dict_t network_card_set = NULL; */
+
+#if 0
+static int card_number = 0;
+static network_link_GTNETS_t **routing_table = NULL;
+static int *routing_table_size = NULL;
+
+#define ROUTE(i,j) routing_table[(i)+(j)*card_number]
+#define ROUTE_SIZE(i,j) routing_table_size[(i)+(j)*card_number]
+#endif
+
+/** QUESTIONS for GTNetS integration
+ ** 1. What's the deal with name_service and get_resource_name
+ ** Right now our local dictionaries contain only integers
+ ** and not structures, but it seems that surf_network_resource->common_public
+ ** needs something in it, for the above.
+ ** 2. Right now there is no "kill flow" in our GTNetS implementation. Do we
+ ** need to do something about this?
+ ** 3. We didn't reall do anything with the "action" stuff, which we assume
+ ** is fine.
+ ** 4. We ignore the fact there is some max_duration on flows (see #2 above)
+ ** 5. share_resources() returns a duration, not a date, right?
+ ** 6. How do we tell the user that "rates" are not supported?
+ ** 7. We don't update "remaining" for ongoing flows. Is it bad?
+ **/
+
+/* Free memory for a network link: REMOVED BY KF */
+static void network_link_free(void *nw_link)
+{
+ free(((network_link_GTNETS_t)nw_link)->name);
+ free(nw_link);
+}
+
+/* Instantiate a new network link: UNMODIFIED BY HC */
+/* name: some name for the link, from the XML */
+/* bw_initial: The bandwidth value */
+/* bw_trace: unused here */
+/* lat_initial: The latency value */
+/* lat_trace: not used here */
+/* state_initial: SURF_NETWORK_LINK_ON */
+/* state_trace: not used here */
+static void network_link_new(char *name,
+ double bw,
+ double lat)
+{
+ static int link_count=-1;
+ network_link_GTNETS_t gtnets_link;
+
+ /* KF: Check that the link wasn't added before */
+ if (xbt_dict_get_or_null(network_link_set, name)) {
+ return;
+ }
+
+ /* KF: Increment the link counter for GTNetS */
+ link_count++;
+
+/*
+ nw_link->resource = (surf_resource_t) surf_network_resource;
+ nw_link->name = name;
+ nw_link->bw_current = bw_initial;
+ if (bw_trace)
+ nw_link->bw_event =
+ tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
+ nw_link->lat_current = lat_initial;
+ if (lat_trace)
+ nw_link->lat_event =
+ tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
+ nw_link->state_current = state_initial;
+ if (state_trace)
+ nw_link->state_event =
+ tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
+*/
+
+ /* KF: Add the link to the GTNetS simulation */
+ if (GTNetS_add_link(link_count, bw, lat)) {
+ xbt_assert0(0,"Cannot create GTNetS link");
+ }
+
+ /* KF: Insert entry in the dictionary */
+ gtnets_link = xbt_new0(s_network_link_GTNETS_t,1);
+ gtnets_link->name = strcpy(name);
+ gtnets_link->bw_current = bw;
+ gtnets_link->lat_current = lat;
+ gtnets_link->id = link_count;
+ xbt_dict_set(network_link_set, name, gtnets_link, network_link_free);
+
+ return;
+}
+
+/* free the network card: REMOVED by KF */
+static void network_card_free(void *nw_card)
+{
+ free(((network_card_GTNETS_t)nw_card)->name);
+ free(nw_card);
+}
+
+/* Instantiate a new network card: MODIFYED BY KF */
+static int network_card_new(const char *name)
+{
+ static int card_count=-1;
+
+ /* KF: Check that we haven't seen the network card before */
+ if (xbt_dict_get_or_null(network_card_set, name))
+ return;
+
+ /* KF: Increment the card counter for GTNetS */
+ card_count++;
+
+ /* KF: just use the dictionary to map link names to link indices */
+ gtnets_network_card = xbt_new0(s_network_card_GTNETS_t,1);
+ gtnets_network_card->name = strcpy(name);
+ gtnets_network_card->id = card_count;
+ xbt_dict_set(network_card_set, name, gtnets_network_card, network_card_free);
+
+ /* KF: just return the GTNetS ID as the SURF ID */
+ return card_count;
+}
+
+/* Instantiate a new route: MODIFY BY KF */
+static void route_new(int src_id, int dst_id, char **links, int nb_link)
+{
+#if 0
+ network_link_GTNETS_t *link_list = NULL;
+ int i;
+
+ ROUTE_SIZE(src_id, dst_id) = nb_link;
+ link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_GTNETS_t, nb_link));
+ for (i = 0; i < nb_link; i++) {
+ link_list[i] = xbt_dict_get_or_null(network_link_set, links[i]);
+ free(links[i]);
+ }
+ free(links);
+#endif
+ int i;
+ int *gtnets_links;
+
+ /* KF: Build the list of gtnets link IDs */
+ gtnets_links = (int *)calloc(nb_link, sizeof(int));
+ for (i=0; i<nb_link; i++) {
+ gtnets_links[i]=(int)(xbt_dict_get(network_link_set, links[i]))
+ }
+
+ /* KF: Create the GTNets route */
+ if (GTNetS_add_route(src_id, dst_id, gtnets_links, nb_link)) {
+ xbt_assert0(0,"Cannot create GTNetS route");
+ }
+}
+
+/* Parse the XML for a network link */
+static void parse_network_link(void)
+{
+ char *name;
+ double bw;
+ double lat;
+ e_surf_network_link_state_t state;
+
+ name = xbt_strdup(A_surfxml_network_link_name);
+ surf_parse_get_double(&bw,A_surfxml_network_link_bandwidth);
+ surf_parse_get_double(&lat,A_surfxml_network_link_latency);
+ state = SURF_NETWORK_LINK_ON;
+
+ /* Print values when no traces are specified */
+ {
+ tmgr_trace_t bw_trace;
+ tmgr_trace_t state;
+ tmgr_trace_t lat_trace;
+
+ surf_parse_get_trace(&bw_trace, A_surfxml_network_link_bandwidth_file);
+ surf_parse_get_trace(&lat_trace, A_surfxml_network_link_latency_file);
+ surf_parse_get_trace(&state_trace,A_surfxml_network_link_state_file);
+
+ if (bw_trace)
+ WARNING0("The GTNetS network model doesn't support bandwidth state traces");
+ if (lat_trace)
+ WARNING0("The GTNetS network model doesn't support latency state traces");
+ if (state_trace)
+ WARNING0("The GTNetS network model doesn't support link state traces");
+ }
+
+ /* KF: remove several arguments to network_link_new */
+ network_link_new(name, bw, lat);
+}
+
+static int nb_link = 0;
+static char **link_name = NULL;
+static int src_id = -1;
+static int dst_id = -1;
+
+/* Parses a route from the XML: UNMODIFIED BY HC */
+static void parse_route_set_endpoints(void)
+{
+ src_id = network_card_new(A_surfxml_route_src);
+ dst_id = network_card_new(A_surfxml_route_dst);
+ nb_link = 0;
+ link_name = NULL;
+}
+
+/* Parses a route element from the XML: UNMODIFIED BY HC */
+static void parse_route_elem(void)
+{
+ nb_link++;
+ link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
+ link_name[(nb_link) - 1] = xbt_strdup(A_surfxml_route_element_name);
+}
+
+/* Create the route: UNMODIFIED BY HC */
+static void parse_route_set_route(void)
+{
+ route_new(src_id, dst_id, link_name, nb_link);
+}
+
+/* Main XML parsing */
+static void parse_file(const char *file)
+{
+ /* Figuring out the network links */
+ surf_parse_reset_parser();
+ ETag_surfxml_network_link_fun=parse_network_link;
+ surf_parse_open(file);
+ xbt_assert1((!surf_parse()),"Parse error in %s",file);
+ surf_parse_close();
+
+ /* Figuring out the network cards used */
+ surf_parse_reset_parser();
+ STag_surfxml_route_fun=parse_route_set_endpoints;
+ surf_parse_open(file);
+ xbt_assert1((!surf_parse()),"Parse error in %s",file);
+ surf_parse_close();
+
+ /* Building the routes */
+ surf_parse_reset_parser();
+ STag_surfxml_route_fun=parse_route_set_endpoints;
+ ETag_surfxml_route_element_fun=parse_route_elem;
+ ETag_surfxml_route_fun=parse_route_set_route;
+ surf_parse_open(file);
+ xbt_assert1((!surf_parse()),"Parse error in %s",file);
+ surf_parse_close();
+}
+
+static void *name_service(const char *name)
+{
+ return xbt_dict_get_or_null(network_card_set, name);
+}
+
+static const char *get_resource_name(void *resource_id)
+{
+ return ((network_card_GTNETS_t) resource_id)->name;
+}
+
+/* We do not care about this: only used for traces */
+static int resource_used(void *resource_id)
+{
+ return 0; /* We don't care */
+}
+
+static int action_free(surf_action_t action)
+{
+ action->using--;
+ if(!action->using) {
+ xbt_swag_remove(action, action->state_set);
+ /* KF: No explicit freeing needed for GTNeTS here */
+ free(action);
+ }
+ return 1;
+}
+
+static void action_use(surf_action_t action)
+{
+ action->using++;
+}
+
+static void action_cancel(surf_action_t action)
+{
+ return;
+}
+
+static void action_recycle(surf_action_t action)
+{
+ return;
+}
+
+static void action_change_state(surf_action_t action,
+ e_surf_action_state_t state)
+{
+/* if((state==SURF_ACTION_DONE) || (state==SURF_ACTION_FAILED)) */
+/* if(((surf_action_network_GTNETS_t)action)->variable) { */
+/* lmm_variable_disable(maxmin_system, ((surf_action_network_GTNETS_t)action)->variable); */
+/* ((surf_action_network_GTNETS_t)action)->variable = NULL; */
+/* } */
+
+ surf_action_change_state(action, state);
+ return;
+}
+
+
+/* share_resources() */
+static double share_resources(double now)
+{
+#if 0
+ s_surf_action_network_GTNETS_t s_action;
+ surf_action_network_GTNETS_t action = NULL;
+ xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
+#endif
+
+ return GTNetS_get_time_to_next_flow_completion();
+}
+
+/* delta: by how many time units the simulation must advance */
+/* In this function: change the state of actions that terminate */
+/* The delta may not come from the network, and thus may be different (smaller)
+ than the one returned by the function above */
+/* If the delta is a network-caused min, then do not emulate any timer in the
+ network simulation, otherwise fake a timer somehow to advance the simulation of min seconds */
+
+static void update_actions_state(double now, double delta)
+{
+ surf_action_network_GTNETS_t action = NULL;
+ surf_action_network_GTNETS_t next_action = NULL;
+ xbt_swag_t running_actions =
+ surf_network_resource->common_public->states.running_action_set;
+
+ double time_to_next_flow_completion = GTNetS_get_time_to_next_flow_completion();
+
+ if (time_to_next_flow_completion < delta) {
+ void *metadata;
+ surf_action_t action;
+
+ if (GTNetS_run_until_next_flow_completion(&metadata)) {
+ xbt_assert0(0,"Cannot run GTNetS simulation until next flow completion");
+ }
+
+ action = (surf_action_t)metadata;
+
+ action->generic_action.remains = 0;
+ action->generic_action.finish = now + time_to_next_flow_completion;
+ action->generic_action.finish = SURF_ACTION_DONE;
+ /* TODO: Anything else here? */
+ } else {
+ if (GTNetS_run(delta)) {
+ xbt_assert0(0,"Cannot run GTNetS simulation");
+ }
+ }
+
+ return;
+}
+
+/* UNUSED HERE: no traces */
+static void update_resource_state(void *id,
+ tmgr_trace_event_t event_type,
+ double value)
+{
+ return;
+}
+
+/* KF: Rate not supported */
+static surf_action_t communicate(void *src, void *dst, double size, double rate)
+{
+ surf_action_network_GTNETS_t action = NULL;
+ network_card_GTNETS_t card_src = src;
+ network_card_GTNETS_t card_dst = dst;
+ int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
+ network_link_GTNETS_t *route = ROUTE(card_src->id, card_dst->id);
+ int i;
+
+ xbt_assert2(route_size,"You're trying to send data from %s to %s but there is no connexion between these two cards.", card_src->name, card_dst->name);
+
+ action = xbt_new0(s_surf_action_network_GTNETS_t, 1);
+
+ action->generic_action.using = 1;
+ action->generic_action.cost = size;
+ action->generic_action.remains = size;
+ action->generic_action.max_duration = NO_MAX_DURATION;
+ action->generic_action.start = surf_get_clock();
+ action->generic_action.finish = -1.0;
+ action->generic_action.resource_type =
+ (surf_resource_t) surf_network_resource;
+
+ action->generic_action.state_set =
+ surf_network_resource->common_public->states.running_action_set;
+
+ xbt_swag_insert(action, action->generic_action.state_set);
+
+ /* KF: Add a flow to the GTNets Simulation, associated to this action */
+ GTNetS_create_flow(src->id, dst->id, size, (void *)action);
+
+ return (surf_action_t) action;
+}
+
+/* Suspend a flow() */
+static void action_suspend(surf_action_t action)
+{
+ xbt_assert0(0,"action_suspend() not supported for the GTNets network model");
+}
+
+/* Resume a flow() */
+static void action_resume(surf_action_t action)
+{
+ xbt_assert0(0,"action_resume() not supported for the GTNets network model");
+}
+
+/* Test whether a flow is suspended */
+static int action_is_suspended(surf_action_t action)
+{
+ return 0;
+}
+
+static void finalize(void)
+{
+ int i,j;
+
+ xbt_dict_free(&network_card_set);
+ xbt_dict_free(&network_link_set);
+ xbt_swag_free(surf_network_resource->common_public->states.
+ ready_action_set);
+ xbt_swag_free(surf_network_resource->common_public->states.
+ running_action_set);
+ xbt_swag_free(surf_network_resource->common_public->states.
+ failed_action_set);
+ xbt_swag_free(surf_network_resource->common_public->states.
+ done_action_set);
+ free(surf_network_resource->common_public);
+ free(surf_network_resource->common_private);
+ free(surf_network_resource->extension_public);
+
+ free(surf_network_resource);
+ surf_network_resource = NULL;
+
+#if 0
+ for (i = 0; i < card_number; i++)
+ for (j = 0; j < card_number; j++)
+ free(ROUTE(i,j));
+ free(routing_table);
+ routing_table = NULL;
+ free(routing_table_size);
+ routing_table_size = NULL;
+ card_number = 0;
+#endif
+
+ /* ADDED BY KF */
+ GTNetS_finalize();
+ /* END ADDITION */
+}
+
+static void surf_network_resource_init_internal(void)
+{
+ s_surf_action_t action;
+
+ surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
+
+ surf_network_resource->common_private =
+ xbt_new0(s_surf_resource_private_t, 1);
+ surf_network_resource->common_public =
+ xbt_new0(s_surf_resource_public_t, 1);
+ surf_network_resource->extension_public =
+ xbt_new0(s_surf_network_resource_extension_public_t, 1);
+
+ surf_network_resource->common_public->states.ready_action_set =
+ xbt_swag_new(xbt_swag_offset(action, state_hookup));
+ surf_network_resource->common_public->states.running_action_set =
+ xbt_swag_new(xbt_swag_offset(action, state_hookup));
+ surf_network_resource->common_public->states.failed_action_set =
+ xbt_swag_new(xbt_swag_offset(action, state_hookup));
+ surf_network_resource->common_public->states.done_action_set =
+ xbt_swag_new(xbt_swag_offset(action, state_hookup));
+
+ surf_network_resource->common_public->name_service = name_service;
+ surf_network_resource->common_public->get_resource_name =
+ get_resource_name;
+ surf_network_resource->common_public->action_get_state =
+ surf_action_get_state;
+ surf_network_resource->common_public->action_use = action_use;
+ surf_network_resource->common_public->action_free = action_free;
+ surf_network_resource->common_public->action_cancel = action_cancel;
+ surf_network_resource->common_public->action_recycle = action_recycle;
+ surf_network_resource->common_public->action_change_state =
+ action_change_state;
+ surf_network_resource->common_public->action_set_data = surf_action_set_data;
+ surf_network_resource->common_public->name = "network";
+
+ surf_network_resource->common_private->resource_used = resource_used;
+ surf_network_resource->common_private->share_resources = share_resources;
+ surf_network_resource->common_private->update_actions_state =
+ update_actions_state;
+ surf_network_resource->common_private->update_resource_state =
+ update_resource_state;
+ surf_network_resource->common_private->finalize = finalize;
+
+ surf_network_resource->common_public->suspend = action_suspend;
+ surf_network_resource->common_public->resume = action_resume;
+ surf_network_resource->common_public->is_suspended = action_is_suspended;
+
+ surf_network_resource->extension_public->communicate = communicate;
+
+ network_link_set = xbt_dict_new();
+ network_card_set = xbt_dict_new();
+
+ /* HC: I am assuming that this stays in for simulation of compute tasks */
+ xbt_assert0(maxmin_system, "surf_init has to be called first!");
+
+ /* KF: Added the initialization for GTNetS interface */
+ if (GTNetS_initialize()) {
+ xbt_assert0(0, "impossible to initialize GTNetS interface");
+ }
+}
+
+/* HC: I put this prototype here for now but it will have to go in
+ src/include/surf.h when it is functionnal. */
+void surf_network_resource_init_GTNETS(const char *filename);
+
+void surf_network_resource_init_GTNETS(const char *filename)
+{
+ if (surf_network_resource)
+ return;
+ surf_network_resource_init_internal();
+ parse_file(filename);
+ xbt_dynar_push(resource_list, &surf_network_resource);
+}