-/* Copyright (c) 2007-2013. 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 "network_gtnets_private.h"
-#include "gtnets/gtnets_interface.h"
-#include "xbt/str.h"
-#include "surf/surfxml_parse_values.h"
-
-static double time_to_next_flow_completion = -1;
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_gtnets, surf,
- "Logging specific to the SURF network GTNetS module");
-
-extern routing_platf_t routing_platf;
-
-double sg_gtnets_jitter = 0.0;
-int sg_gtnets_jitter_seed = 10;
-
-static void link_new(const char *name, double bw, double lat, xbt_dict_t props)
-{
- static int link_count = -1;
- network_link_GTNETS_t gtnets_link;
-
- if (xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL)) {
- return;
- }
-
- XBT_DEBUG("Scanning link name %s", name);
-
-
- gtnets_link = xbt_new0(s_network_link_GTNETS_t, 1);
- gtnets_link->generic_resource.name = xbt_strdup(name);
- gtnets_link->generic_resource.properties = props;
- gtnets_link->bw_current = bw;
- gtnets_link->lat_current = lat;
-
- link_count++;
-
- XBT_DEBUG("Adding new link, linkid %d, name %s, latency %g, bandwidth %g",
- link_count, name, lat, bw);
-
- if (gtnets_add_link(link_count, bw, lat)) {
- xbt_die("Cannot create GTNetS link");
- }
- gtnets_link->id = link_count;
-
- xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, gtnets_link);
-}
-
-static void route_new(int src_id, int dst_id, xbt_dynar_t links,
- int nb_link)
-{
- network_link_GTNETS_t link;
- unsigned int cursor;
- int i = 0;
- int *gtnets_links;
-
- XBT_IN("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
- src_id, dst_id, links, nb_link);
-
- /* Build the list of gtnets link IDs */
- gtnets_links = xbt_new0(int, nb_link);
- i = 0;
- xbt_dynar_foreach(links, cursor, link) {
- gtnets_links[i++] = link->id;
- }
-
- if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
- xbt_die("Cannot create GTNetS route");
- }
- XBT_OUT();
-}
-
-static void route_onehop_new(int src_id, int dst_id,
- network_link_GTNETS_t link)
-{
- if (gtnets_add_onehop_route(src_id, dst_id, link->id)) {
- xbt_die("Cannot create GTNetS route");
- }
-}
-
-/* Parse the XML for a network link */
-static void parse_link_init(sg_platf_link_cbarg_t link)
-{
- XBT_DEBUG("link_gtnets");
-
- if (link->bandwidth_trace)
- XBT_INFO
- ("The GTNetS network model doesn't support bandwidth state traces");
- if (link->latency_trace)
- XBT_INFO("The GTNetS network model doesn't support latency state traces");
- if (link->state_trace)
- XBT_INFO("The GTNetS network model doesn't support link state traces");
-
- if (link->policy == SURF_LINK_FULLDUPLEX)
- {
- link_new(bprintf("%s_UP",link->id), link->bandwidth, link->latency, current_property_set);
- link_new(bprintf("%s_DOWN",link->id), link->bandwidth, link->latency, current_property_set);
-
- }
- else link_new(link->id, link->bandwidth, link->latency, current_property_set);
- current_property_set = NULL;
-}
-
-/* Create the gtnets topology based on routing strategy */
-static void create_gtnets_topology(void)
-{
- XBT_DEBUG("Starting topology generation");
-// FIXME: We should take the list of hosts/routers (in the routing module), number the elements of this list,
-// and then you can use the id to reimplement properly the following GTNets calls
-
- //get the onelinks from the parsed platform
- xbt_dynar_t onelink_routes = routing_platf->get_onelink_routes();
- if (!onelink_routes)
- return;
-
- //save them in trace file
- onelink_t onelink;
- unsigned int iter;
- xbt_dynar_foreach(onelink_routes, iter, onelink) {
- void *link = onelink->link_ptr;
-
- if(onelink->src->id != onelink->dst->id){
- XBT_DEBUG("Link (#%p), src (#%s), dst (#%s), src_id = %d, dst_id = %d",
- link,
- onelink->src->name,
- onelink->dst->name,
- onelink->src->id,
- onelink->dst->id);
- XBT_DEBUG("Calling one link route");
- if(onelink->src->rc_type == SURF_NETWORK_ELEMENT_ROUTER){
- gtnets_add_router(onelink->src->id);
- }
- if(onelink->dst->rc_type == SURF_NETWORK_ELEMENT_ROUTER){
- gtnets_add_router(onelink->dst->id);
- }
- route_onehop_new(onelink->src->id, onelink->dst->id, (network_link_GTNETS_t)(link));
- }
- }
-
- if (XBT_LOG_ISENABLED(surf_network_gtnets, xbt_log_priority_debug)) {
- gtnets_print_topology();
- }
-}
-
-/* Main XML parsing */
-static void define_callbacks(void)
-{
- /* Figuring out the network links */
- sg_platf_link_add_cb (&parse_link_init);
- sg_platf_postparse_add_cb(&create_gtnets_topology);
-}
-
-static int resource_used(void *resource_id)
-{
- xbt_die("The resource_used feature is not implemented in GTNets model");
-}
-
-static int action_unref(surf_action_t action)
-{
- action->refcount--;
- if (!action->refcount) {
- xbt_swag_remove(action, action->state_set);
-#ifdef HAVE_TRACING
- xbt_free(action->category);
-#endif
- surf_action_free(&action);
- return 1;
- }
- return 0;
-}
-
-static void action_cancel(surf_action_t action)
-{
- xbt_die("Cannot cancel GTNetS flow");
- return;
-}
-
-static void action_recycle(surf_action_t action)
-{
- xbt_die("Cannot recycle GTNetS flow");
- return;
-}
-
-static double action_get_remains(surf_action_t action)
-{
- return action->remains;
-}
-
-static void action_state_set(surf_action_t action,
- e_surf_action_state_t state)
-{
- surf_action_state_set(action, state);
-}
-
-static double share_resources(surf_model_t network_model, double now)
-{
- xbt_swag_t running_actions =
- surf_network_model->states.running_action_set;
-
- //get the first relevant value from the running_actions list
- if (!xbt_swag_size(running_actions))
- return -1.0;
-
- xbt_assert(time_to_next_flow_completion,
- "Time to next flow completion not initialized!\n");
-
- XBT_DEBUG("Calling gtnets_get_time_to_next_flow_completion");
- time_to_next_flow_completion = gtnets_get_time_to_next_flow_completion();
- XBT_DEBUG("gtnets_get_time_to_next_flow_completion received %g",
- time_to_next_flow_completion);
-
- return time_to_next_flow_completion;
-}
-
-static void update_actions_state(surf_model_t network_model, double now, double delta)
-{
- surf_action_network_GTNETS_t action = NULL;
- xbt_swag_t running_actions =
- network_model->states.running_action_set;
-
- /* If there are no running flows, just return */
- if (time_to_next_flow_completion < 0.0) {
- return;
- }
-
- /* if delta == time_to_next_flow_completion, too. */
- if (time_to_next_flow_completion <= delta) { /* run until the first flow completes */
- void **metadata;
- int i, num_flows;
-
- num_flows = 0;
-
- if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
- xbt_die("Cannot run GTNetS simulation until next flow completion");
- }
- if (num_flows < 1) {
- xbt_die("GTNetS simulation couldn't find a flow that would complete");
- }
-
- xbt_swag_foreach(action, running_actions) {
- XBT_DEBUG("Action (%p) remains old value: %f", action,
- action->generic_action.remains);
- double sent = gtnets_get_flow_rx(action);
-
- XBT_DEBUG("Sent value returned by GTNetS : %f", sent);
-
-#ifdef HAVE_TRACING
- action->last_remains = action->generic_action.remains;
-#endif
-
- //need to trust this remain value
- if (sent == 0) {
- action->generic_action.remains = 0;
- } else {
- action->generic_action.remains =
- action->generic_action.cost - sent;
- }
-
- // verify that this action is a finishing action.
- int found=0;
- for (i = 0; i < num_flows; i++) {
- if(action == (surf_action_network_GTNETS_t) (metadata[i])){
- found = 1;
- break;
- }
- }
-
- // indeed this action have not yet started
- // because of that we need to fix the remaining to the
- // original total cost
- if(found != 1 && action->generic_action.remains == 0 ){
- action->generic_action.remains = action->generic_action.cost;
- }
-
- XBT_DEBUG("Action (%p) remains new value: %f", action,
- action->generic_action.remains);
-
-#ifdef HAVE_TRACING
- if (TRACE_is_enabled()) {
- double last_amount_sent = (action->generic_action.cost - action->last_remains);
- double amount_sent = (action->generic_action.cost - action->generic_action.remains);
-
- // tracing resource utilization
- xbt_dynar_t route = NULL;
-
- routing_get_route_and_latency (action->src, action->dst, &route, NULL);
-
- unsigned int i;
- for (i = 0; i < xbt_dynar_length (route); i++){
- network_link_GTNETS_t *link = ((network_link_GTNETS_t*)xbt_dynar_get_ptr (route, i));
- TRACE_surf_link_set_utilization ((*link)->generic_resource.name,
- ((surf_action_t) action)->category,
- (amount_sent - last_amount_sent)/(delta),
- now-delta,
- delta);
- }
- }
-#endif
-
-
- }
-
- for (i = 0; i < num_flows; i++) {
- action = (surf_action_network_GTNETS_t) (metadata[i]);
-
-
-
- action->generic_action.finish = now + time_to_next_flow_completion;
- action_state_set((surf_action_t) action, SURF_ACTION_DONE);
- XBT_DEBUG("----> Action (%p) just terminated", action);
-
- }
-
-
- } else { /* run for a given number of seconds */
- if (gtnets_run(delta)) {
- xbt_die("Cannot run GTNetS simulation");
- }
- }
-
- return;
-}
-
-static void update_resource_state(void *id,
- tmgr_trace_event_t event_type,
- double value, double date)
-{
- xbt_die("Cannot update model state for GTNetS simulation");
-}
-
-/* Max durations are not supported */
-static surf_action_t communicate(sg_routing_edge_t src_card,
- sg_routing_edge_t dst_card,
- double size, double rate)
-{
- surf_action_network_GTNETS_t action = NULL;
-
- int src = src_card->id;
- int dst = dst_card->id;
- char *src_name = src_card->name;
- char *dst_name = dst_card->name;
-
- xbt_assert((src >= 0
- && dst >= 0), "Either src or dst have invalid id (id<0)");
-
- XBT_DEBUG("Setting flow src %d \"%s\", dst %d \"%s\"", src, src_name, dst,
- dst_name);
-
- xbt_dynar_t route = NULL;
-
- routing_get_route_and_latency(src_card, dst_card, &route, NULL);
-
- route_new(src, dst, route, xbt_dynar_length(route));
-
- action =
- surf_action_new(sizeof(s_surf_action_network_GTNETS_t), size,
- surf_network_model, 0);
-
-#ifdef HAVE_TRACING
- action->last_remains = 0;
-#endif
-
- /* Add a flow to the GTNets Simulation, associated to this action */
- if (gtnets_create_flow(src, dst, size, (void *) action) < 0) {
- xbt_die("Not route between host %s and host %s", src_name, dst_name);
- }
-#ifdef HAVE_TRACING
- TRACE_surf_gtnets_communicate(action, src_card, dst_card);
-#endif
-
- return (surf_action_t) action;
-}
-
-/* Suspend a flow() */
-static void action_suspend(surf_action_t action)
-{
- THROW_UNIMPLEMENTED;
-}
-
-/* Resume a flow() */
-static void action_resume(surf_action_t action)
-{
- THROW_UNIMPLEMENTED;
-}
-
-/* Test whether a flow is suspended */
-static int action_is_suspended(surf_action_t action)
-{
- return 0;
-}
-
-#ifdef HAVE_TRACING
-static void gtnets_action_set_category(surf_action_t action, const char *category)
-{
- action->category = xbt_strdup (category);
-}
-#endif
-
-static void finalize(surf_model_t network_model)
-{
- gtnets_finalize();
-}
-
-static void surf_network_model_init_internal(void)
-{
- surf_network_model = surf_model_init();
-
- surf_network_model->name = "network GTNetS";
- surf_network_model->type = SURF_MODEL_TYPE_NETWORK;
- surf_network_model->action_unref = action_unref;
- surf_network_model->action_cancel = action_cancel;
- surf_network_model->action_recycle = action_recycle;
- surf_network_model->action_state_set = action_state_set;
- surf_network_model->get_remains = action_get_remains;
-
- surf_network_model->model_private->resource_used = resource_used;
- surf_network_model->model_private->share_resources = share_resources;
- surf_network_model->model_private->update_actions_state =
- update_actions_state;
- surf_network_model->model_private->update_resource_state =
- update_resource_state;
- surf_network_model->model_private->finalize = finalize;
-
- surf_network_model->suspend = action_suspend;
- surf_network_model->resume = action_resume;
- surf_network_model->is_suspended = action_is_suspended;
-#ifdef HAVE_TRACING
- surf_network_model->set_category = gtnets_action_set_category;
-#endif
-
- surf_network_model->extension.network.communicate = communicate;
-
- /* Added the initialization for GTNetS interface */
- if (gtnets_initialize(sg_tcp_gamma)) {
- xbt_die("Impossible to initialize GTNetS interface");
- }
-
- routing_model_create(NULL);
-}
-
-#ifdef HAVE_LATENCY_BOUND_TRACKING
-static int get_latency_limited(surf_action_t action)
-{
- return 0;
-}
-#endif
-
-void surf_network_model_init_GTNETS(void)
-{
- if (surf_network_model)
- return;
-
- surf_network_model_init_internal();
- define_callbacks();
- xbt_dynar_push(model_list, &surf_network_model);
-
-#ifdef HAVE_LATENCY_BOUND_TRACKING
- surf_network_model->get_latency_limited = get_latency_limited;
-#endif
-
- if (sg_gtnets_jitter > 0.0) {
- gtnets_set_jitter(sg_gtnets_jitter);
- gtnets_set_jitter_seed(sg_gtnets_jitter_seed);
- }
-}
