1 /* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "network_gtnets_private.h"
8 #include "gtnets/gtnets_interface.h"
10 #include "surf/surfxml_parse_values.h"
12 static double time_to_next_flow_completion = -1;
14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_gtnets, surf,
15 "Logging specific to the SURF network GTNetS module");
17 extern routing_global_t global_routing;
19 double sg_gtnets_jitter = 0.0;
20 int sg_gtnets_jitter_seed = 10;
22 static void link_new(char *name, double bw, double lat, xbt_dict_t props)
24 static int link_count = -1;
25 network_link_GTNETS_t gtnets_link;
27 if (xbt_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL)) {
31 XBT_DEBUG("Scanning link name %s", name);
34 gtnets_link = xbt_new0(s_network_link_GTNETS_t, 1);
35 gtnets_link->generic_resource.name = name;
36 gtnets_link->generic_resource.properties = props;
37 gtnets_link->bw_current = bw;
38 gtnets_link->lat_current = lat;
42 XBT_DEBUG("Adding new link, linkid %d, name %s, latency %g, bandwidth %g",
43 link_count, name, lat, bw);
45 if (gtnets_add_link(link_count, bw, lat)) {
46 xbt_die("Cannot create GTNetS link");
48 gtnets_link->id = link_count;
50 xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, gtnets_link);
53 static void route_new(int src_id, int dst_id, xbt_dynar_t links,
56 network_link_GTNETS_t link;
61 XBT_IN("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
62 src_id, dst_id, links, nb_link);
64 /* Build the list of gtnets link IDs */
65 gtnets_links = (int *) calloc(nb_link, sizeof(int));
67 xbt_dynar_foreach(links, cursor, link) {
68 gtnets_links[i++] = link->id;
71 if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
72 xbt_die("Cannot create GTNetS route");
77 static void route_onehop_new(int src_id, int dst_id,
78 network_link_GTNETS_t link)
80 if (gtnets_add_onehop_route(src_id, dst_id, link->id)) {
81 xbt_die("Cannot create GTNetS route");
85 /* Parse the XML for a network link */
86 static void parse_link_init(void)
88 e_surf_resource_state_t state;
89 state = SURF_RESOURCE_ON;
90 XBT_DEBUG("link_gtnets");
92 if (struct_lnk->V_link_bandwidth_file)
94 ("The GTNetS network model doesn't support bandwidth state traces");
95 if (struct_lnk->V_link_latency_file)
96 XBT_INFO("The GTNetS network model doesn't support latency state traces");
97 if (struct_lnk->V_link_state_file)
98 XBT_INFO("The GTNetS network model doesn't support link state traces");
100 if (struct_lnk->V_link_sharing_policy == A_surfxml_link_sharing_policy_FULLDUPLEX)
102 link_new(bprintf("%s_UP",struct_lnk->V_link_id), struct_lnk->V_link_bandwidth, struct_lnk->V_link_latency, current_property_set);
103 link_new(bprintf("%s_DOWN",struct_lnk->V_link_id), struct_lnk->V_link_bandwidth, struct_lnk->V_link_latency, current_property_set);
106 else link_new(struct_lnk->V_link_id, struct_lnk->V_link_bandwidth, struct_lnk->V_link_latency, current_property_set);
107 current_property_set = NULL;
110 /* Create the gtnets topology based on routing strategy */
111 static void create_gtnets_topology()
115 XBT_DEBUG("Starting topology generation");
116 // FIXME: We should take the list of hosts/routers (in the routing module), number the elements of this list,
117 // and then you can use the id to reimplement properly the following GTNets calls
119 //get the onelinks from the parsed platform
120 xbt_dynar_t onelink_routes = global_routing->get_onelink_routes();
124 //save them in trace file
127 xbt_dynar_foreach(onelink_routes, iter, onelink) {
128 char *src = onelink->src;
129 char *dst = onelink->dst;
130 void *link = onelink->link_ptr;
131 src_id = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,src));
132 dst_id = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,dst));
134 if(src_id != dst_id){
135 XBT_DEBUG("Link (#%p), src (#%s), dst (#%s), src_id = %d, dst_id = %d", link,src,dst, src_id, dst_id);
136 XBT_DEBUG("Calling one link route");
137 if(global_routing->get_network_element_type(src) == SURF_NETWORK_ELEMENT_ROUTER){
138 gtnets_add_router(src_id);
140 if(global_routing->get_network_element_type(dst) == SURF_NETWORK_ELEMENT_ROUTER){
141 gtnets_add_router(dst_id);
143 route_onehop_new(src_id, dst_id, (network_link_GTNETS_t)(link));
147 if (XBT_LOG_ISENABLED(surf_network_gtnets, xbt_log_priority_debug)) {
148 gtnets_print_topology();
152 /* Main XML parsing */
153 static void define_callbacks(void)
155 /* Figuring out the network links */
156 surfxml_add_callback(ETag_surfxml_link_cb_list, &parse_link_init);
157 surfxml_add_callback(ETag_surfxml_platform_cb_list,
158 &create_gtnets_topology);
161 static int resource_used(void *resource_id)
163 xbt_die("The resource_used feature is not implemented in GTNets model");
166 static int action_unref(surf_action_t action)
169 if (!action->refcount) {
170 xbt_swag_remove(action, action->state_set);
172 xbt_free(action->category);
174 surf_action_free(&action);
180 static void action_cancel(surf_action_t action)
182 xbt_die("Cannot cancel GTNetS flow");
186 static void action_recycle(surf_action_t action)
188 xbt_die("Cannot recycle GTNetS flow");
192 static double action_get_remains(surf_action_t action)
194 return action->remains;
197 static void action_state_set(surf_action_t action,
198 e_surf_action_state_t state)
200 surf_action_state_set(action, state);
203 static double share_resources(double now)
205 xbt_swag_t running_actions =
206 surf_network_model->states.running_action_set;
208 //get the first relevant value from the running_actions list
209 if (!xbt_swag_size(running_actions))
212 xbt_assert(time_to_next_flow_completion,
213 "Time to next flow completion not initialized!\n");
215 XBT_DEBUG("Calling gtnets_get_time_to_next_flow_completion");
216 time_to_next_flow_completion = gtnets_get_time_to_next_flow_completion();
217 XBT_DEBUG("gtnets_get_time_to_next_flow_completion received %lg",
218 time_to_next_flow_completion);
220 return time_to_next_flow_completion;
223 static void update_actions_state(double now, double delta)
225 surf_action_network_GTNETS_t action = NULL;
226 xbt_swag_t running_actions =
227 surf_network_model->states.running_action_set;
229 /* If there are no running flows, just return */
230 if (time_to_next_flow_completion < 0.0) {
234 /* if delta == time_to_next_flow_completion, too. */
235 if (time_to_next_flow_completion <= delta) { /* run until the first flow completes */
241 if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
242 xbt_die("Cannot run GTNetS simulation until next flow completion");
245 xbt_die("GTNetS simulation couldn't find a flow that would complete");
248 xbt_swag_foreach(action, running_actions) {
249 XBT_DEBUG("Action (%p) remains old value: %f", action,
250 action->generic_action.remains);
251 double sent = gtnets_get_flow_rx(action);
253 XBT_DEBUG("Sent value returned by GTNetS : %f", sent);
256 action->last_remains = action->generic_action.remains;
259 //need to trust this remain value
261 action->generic_action.remains = 0;
263 action->generic_action.remains =
264 action->generic_action.cost - sent;
267 // verify that this action is a finishing action.
269 for (i = 0; i < num_flows; i++) {
270 if(action == (surf_action_network_GTNETS_t) (metadata[i])){
276 // indeed this action have not yet started
277 // because of that we need to fix the remaining to the
278 // original total cost
279 if(found != 1 && action->generic_action.remains == 0 ){
280 action->generic_action.remains = action->generic_action.cost;
283 XBT_DEBUG("Action (%p) remains new value: %f", action,
284 action->generic_action.remains);
287 if (TRACE_is_enabled()) {
288 double last_amount_sent = (action->generic_action.cost - action->last_remains);
289 double amount_sent = (action->generic_action.cost - action->generic_action.remains);
291 // tracing resource utilization
292 xbt_dynar_t route = global_routing->get_route(action->src_name,
294 network_link_GTNETS_t link;
296 xbt_dynar_foreach(route, i, link) {
297 TRACE_surf_link_set_utilization (link->generic_resource.name,
298 action->generic_action.data,
299 (surf_action_t) action,
300 (amount_sent - last_amount_sent)/(delta),
310 for (i = 0; i < num_flows; i++) {
311 action = (surf_action_network_GTNETS_t) (metadata[i]);
315 action->generic_action.finish = now + time_to_next_flow_completion;
316 action_state_set((surf_action_t) action, SURF_ACTION_DONE);
317 XBT_DEBUG("----> Action (%p) just terminated", action);
320 TRACE_surf_gtnets_destroy(action);
325 } else { /* run for a given number of seconds */
326 if (gtnets_run(delta)) {
327 xbt_die("Cannot run GTNetS simulation");
334 static void update_resource_state(void *id,
335 tmgr_trace_event_t event_type,
336 double value, double date)
338 xbt_die("Cannot update model state for GTNetS simulation");
341 /* Max durations are not supported */
342 static surf_action_t communicate(const char *src_name,
343 const char *dst_name, double size,
348 // Utiliser le dictionnaire définit dans create_gtnets_topology pour initialiser correctement src et dst
350 surf_action_network_GTNETS_t action = NULL;
352 src = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,src_name));
353 dst = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,dst_name));
355 && dst >= 0), "Either src or dst have invalid id (id<0)");
357 XBT_DEBUG("Setting flow src %d \"%s\", dst %d \"%s\"", src, src_name, dst,
360 xbt_dynar_t links = global_routing->get_route(src_name, dst_name);
361 route_new(src, dst, links, xbt_dynar_length(links));
364 surf_action_new(sizeof(s_surf_action_network_GTNETS_t), size,
365 surf_network_model, 0);
368 action->last_remains = 0;
371 /* Add a flow to the GTNets Simulation, associated to this action */
372 if (gtnets_create_flow(src, dst, size, (void *) action) < 0) {
373 xbt_die("Not route between host %s and host %s", src_name, dst_name);
376 TRACE_surf_gtnets_communicate(action, src_name, dst_name);
379 return (surf_action_t) action;
382 /* Suspend a flow() */
383 static void action_suspend(surf_action_t action)
388 /* Resume a flow() */
389 static void action_resume(surf_action_t action)
394 /* Test whether a flow is suspended */
395 static int action_is_suspended(surf_action_t action)
401 static void gtnets_action_set_category(surf_action_t action, const char *category)
403 action->category = xbt_strdup (category);
407 static void finalize(void)
412 static void surf_network_model_init_internal(void)
414 surf_network_model = surf_model_init();
416 surf_network_model->name = "network GTNetS";
417 surf_network_model->action_unref = action_unref;
418 surf_network_model->action_cancel = action_cancel;
419 surf_network_model->action_recycle = action_recycle;
420 surf_network_model->action_state_set = action_state_set;
421 surf_network_model->get_remains = action_get_remains;
423 surf_network_model->model_private->resource_used = resource_used;
424 surf_network_model->model_private->share_resources = share_resources;
425 surf_network_model->model_private->update_actions_state =
426 update_actions_state;
427 surf_network_model->model_private->update_resource_state =
428 update_resource_state;
429 surf_network_model->model_private->finalize = finalize;
431 surf_network_model->suspend = action_suspend;
432 surf_network_model->resume = action_resume;
433 surf_network_model->is_suspended = action_is_suspended;
435 surf_network_model->set_category = gtnets_action_set_category;
438 surf_network_model->extension.network.communicate = communicate;
440 /* Added the initialization for GTNetS interface */
441 if (gtnets_initialize(sg_tcp_gamma)) {
442 xbt_die("Impossible to initialize GTNetS interface");
445 routing_model_create(sizeof(network_link_GTNETS_t), NULL, NULL);
448 #ifdef HAVE_LATENCY_BOUND_TRACKING
449 static int get_latency_limited(surf_action_t action)
455 void surf_network_model_init_GTNETS(void)
457 if (surf_network_model)
459 surf_network_model_init_internal();
461 xbt_dynar_push(model_list, &surf_network_model);
463 #ifdef HAVE_LATENCY_BOUND_TRACKING
464 surf_network_model->get_latency_limited = get_latency_limited;
467 if (sg_gtnets_jitter > 0.0) {
468 gtnets_set_jitter(sg_gtnets_jitter);
469 gtnets_set_jitter_seed(sg_gtnets_jitter_seed);
472 update_model_description(surf_network_model_description,
473 "GTNets", surf_network_model);