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"
11 static double time_to_next_flow_completion = -1;
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_gtnets, surf,
14 "Logging specific to the SURF network GTNetS module");
16 extern routing_global_t global_routing;
18 double sg_gtnets_jitter = 0.0;
19 int sg_gtnets_jitter_seed = 10;
21 static void link_new(char *name, double bw, double lat, xbt_dict_t props)
23 static int link_count = -1;
24 network_link_GTNETS_t gtnets_link;
26 if (xbt_dict_get_or_null(surf_network_model->resource_set, name)) {
30 DEBUG1("Scanning link name %s", name);
33 gtnets_link = xbt_new0(s_network_link_GTNETS_t, 1);
34 gtnets_link->generic_resource.name = name;
35 gtnets_link->generic_resource.properties = props;
36 gtnets_link->bw_current = bw;
37 gtnets_link->lat_current = lat;
41 DEBUG4("Adding new link, linkid %d, name %s, latency %g, bandwidth %g",
42 link_count, name, lat, bw);
44 if (gtnets_add_link(link_count, bw, lat)) {
45 xbt_assert0(0, "Cannot create GTNetS link");
47 gtnets_link->id = link_count;
49 xbt_dict_set(surf_network_model->resource_set, name, gtnets_link,
53 TRACE_surf_link_declaration(gtnets_link, name, bw, lat);
57 static void route_new(int src_id, int dst_id, xbt_dynar_t links,
60 network_link_GTNETS_t link;
65 XBT_IN4("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
66 src_id, dst_id, links, nb_link);
68 /* Build the list of gtnets link IDs */
69 gtnets_links = (int *) calloc(nb_link, sizeof(int));
71 xbt_dynar_foreach(links, cursor, link) {
72 gtnets_links[i++] = link->id;
75 if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
76 xbt_assert0(0, "Cannot create GTNetS route");
81 static void route_onehop_new(int src_id, int dst_id,
82 network_link_GTNETS_t link)
84 if (gtnets_add_onehop_route(src_id, dst_id, link->id)) {
85 xbt_assert0(0, "Cannot create GTNetS route");
89 /* Parse the XML for a network link */
90 static void parse_link_init(void)
95 e_surf_resource_state_t state;
96 name = xbt_strdup(A_surfxml_link_id);
97 surf_parse_get_double(&bw, A_surfxml_link_bandwidth);
98 surf_parse_get_double(&lat, A_surfxml_link_latency);
99 state = SURF_RESOURCE_ON;
100 DEBUG0("link_gtnets");
101 tmgr_trace_t bw_trace;
102 tmgr_trace_t state_trace;
103 tmgr_trace_t lat_trace;
105 bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
106 lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
107 state_trace = tmgr_trace_new(A_surfxml_link_state_file);
111 ("The GTNetS network model doesn't support bandwidth state traces");
113 INFO0("The GTNetS network model doesn't support latency state traces");
115 INFO0("The GTNetS network model doesn't support link state traces");
117 current_property_set = xbt_dict_new();
118 if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FULLDUPLEX)
120 link_new(bprintf("%s_UP",name), bw, lat, current_property_set);
121 link_new(bprintf("%s_DOWN",name), bw, lat, current_property_set);
124 else link_new(name, bw, lat, current_property_set);
127 /* Create the gtnets topology based on routing strategy */
128 static void create_gtnets_topology()
132 DEBUG0("Starting topology generation");
133 // À refaire plus tard. Il faut prendre la liste des hôtes/routeurs (dans routing)
134 // À partir de cette liste, on les numérote.
135 // Ensuite, on peut utiliser les id pour refaire les appels GTNets qui suivent.
137 //get the onelinks from the parsed platform
138 xbt_dynar_t onelink_routes = global_routing->get_onelink_routes();
142 //save them in trace file
145 xbt_dynar_foreach(onelink_routes, iter, onelink) {
146 char *src = onelink->src;
147 char *dst = onelink->dst;
148 void *link = onelink->link_ptr;
149 src_id = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,src));
150 dst_id = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,dst));
152 if(src_id != dst_id){
153 DEBUG5("Link (#%p), src (#%s), dst (#%s), src_id = %d, dst_id = %d", link,src,dst, src_id, dst_id);
154 DEBUG0("Calling one link route");
155 if(global_routing->get_network_element_type(src) == SURF_NETWORK_ELEMENT_ROUTER){
156 gtnets_add_router(src_id);
158 if(global_routing->get_network_element_type(dst) == SURF_NETWORK_ELEMENT_ROUTER){
159 gtnets_add_router(dst_id);
161 route_onehop_new(src_id, dst_id, (network_link_GTNETS_t)(link));
165 if (XBT_LOG_ISENABLED(surf_network_gtnets, xbt_log_priority_debug)) {
166 gtnets_print_topology();
170 /* Main XML parsing */
171 static void define_callbacks(const char *file)
173 /* Figuring out the network links */
174 surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
175 surfxml_add_callback(ETag_surfxml_platform_cb_list,
176 &create_gtnets_topology);
179 static int resource_used(void *resource_id)
182 "The resource_used feature is not implemented in GTNets model");
185 static int action_unref(surf_action_t action)
188 if (!action->refcount) {
189 xbt_swag_remove(action, action->state_set);
191 if (action->category)
192 xbt_free(action->category);
200 static void action_cancel(surf_action_t action)
202 xbt_assert0(0, "Cannot cancel GTNetS flow");
206 static void action_recycle(surf_action_t action)
208 xbt_assert0(0, "Cannot recycle GTNetS flow");
212 static double action_get_remains(surf_action_t action)
214 return action->remains;
217 static void action_state_set(surf_action_t action,
218 e_surf_action_state_t state)
220 surf_action_state_set(action, state);
223 static double share_resources(double now)
225 xbt_swag_t running_actions =
226 surf_network_model->states.running_action_set;
228 //get the first relevant value from the running_actions list
229 if (!xbt_swag_size(running_actions))
232 xbt_assert0(time_to_next_flow_completion,
233 "Time to next flow completion not initialized!\n");
235 DEBUG0("Calling gtnets_get_time_to_next_flow_completion");
236 time_to_next_flow_completion = gtnets_get_time_to_next_flow_completion();
237 DEBUG1("gtnets_get_time_to_next_flow_completion received %lg",
238 time_to_next_flow_completion);
240 return time_to_next_flow_completion;
243 static void update_actions_state(double now, double delta)
245 surf_action_network_GTNETS_t action = NULL;
246 xbt_swag_t running_actions =
247 surf_network_model->states.running_action_set;
249 /* If there are no renning flows, just return */
250 if (time_to_next_flow_completion < 0.0) {
254 /* if delta == time_to_next_flow_completion, too. */
255 if (time_to_next_flow_completion <= delta) { /* run until the first flow completes */
261 if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
263 "Cannot run GTNetS simulation until next flow completion");
267 "GTNetS simulation couldn't find a flow that would complete");
270 xbt_swag_foreach(action, running_actions) {
271 DEBUG2("Action (%p) remains old value: %f", action,
272 action->generic_action.remains);
273 double sent = gtnets_get_flow_rx(action);
276 double trace_sent = sent;
277 if (trace_sent == 0) {
278 //if sent is equals to 0, means that gtnets sent all the bytes
279 trace_sent = action->generic_action.cost;
281 // tracing resource utilization
282 // COMMENTED BY DAVID
283 // int src = TRACE_surf_gtnets_get_src (action);
284 // int dst = TRACE_surf_gtnets_get_dst (action);
285 // if (src != -1 && dst != -1){
286 // xbt_dynar_t route = used_routing->get_route(src, dst);
287 // network_link_GTNETS_t link;
289 // xbt_dynar_foreach(route, i, link) {
290 // TRACE_surf_link_set_utilization (link->generic_resource.name,
291 // action->generic_action.data, trace_sent/delta, now-delta, delta);
296 DEBUG1("Sent value returned by GTNetS : %f", sent);
297 //need to trust this remain value
299 action->generic_action.remains = 0;
301 action->generic_action.remains =
302 action->generic_action.cost - sent;
304 DEBUG2("Action (%p) remains new value: %f", action,
305 action->generic_action.remains);
308 for (i = 0; i < num_flows; i++) {
309 action = (surf_action_network_GTNETS_t) (metadata[i]);
311 action->generic_action.finish = now + time_to_next_flow_completion;
313 TRACE_surf_gtnets_destroy(action);
315 action_state_set((surf_action_t) action, SURF_ACTION_DONE);
316 DEBUG1("----> Action (%p) just terminated", action);
320 } else { /* run for a given number of seconds */
321 if (gtnets_run(delta)) {
322 xbt_assert0(0, "Cannot run GTNetS simulation");
329 static void update_resource_state(void *id,
330 tmgr_trace_event_t event_type,
331 double value, double date)
333 xbt_assert0(0, "Cannot update model state for GTNetS simulation");
336 /* Max durations are not supported */
337 static surf_action_t communicate(const char *src_name,
338 const char *dst_name, double size,
343 // Utiliser le dictionnaire définit dans create_gtnets_topology pour initialiser correctement src et dst
345 surf_action_network_GTNETS_t action = NULL;
347 src = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,src_name));
348 dst = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,dst_name));
349 xbt_assert0((src >= 0
350 && dst >= 0), "Either src or dst have invalid id (id<0)");
352 DEBUG4("Setting flow src %d \"%s\", dst %d \"%s\"", src, src_name, dst,
355 xbt_dynar_t links = global_routing->get_route(src_name, dst_name);
356 route_new(src, dst, links, xbt_dynar_length(links));
359 surf_action_new(sizeof(s_surf_action_network_GTNETS_t), size,
360 surf_network_model, 0);
362 /* Add a flow to the GTNets Simulation, associated to this action */
363 if (gtnets_create_flow(src, dst, size, (void *) action) < 0) {
364 xbt_assert2(0, "Not route between host %s and host %s", src_name,
368 TRACE_surf_gtnets_communicate(action, src, dst);
371 return (surf_action_t) action;
374 /* Suspend a flow() */
375 static void action_suspend(surf_action_t action)
380 /* Resume a flow() */
381 static void action_resume(surf_action_t action)
386 /* Test whether a flow is suspended */
387 static int action_is_suspended(surf_action_t action)
392 static void finalize(void)
397 static void surf_network_model_init_internal(void)
399 surf_network_model = surf_model_init();
401 surf_network_model->name = "network GTNetS";
402 surf_network_model->action_unref = action_unref;
403 surf_network_model->action_cancel = action_cancel;
404 surf_network_model->action_recycle = action_recycle;
405 surf_network_model->action_state_set = action_state_set;
406 surf_network_model->get_remains = action_get_remains;
408 surf_network_model->model_private->resource_used = resource_used;
409 surf_network_model->model_private->share_resources = share_resources;
410 surf_network_model->model_private->update_actions_state =
411 update_actions_state;
412 surf_network_model->model_private->update_resource_state =
413 update_resource_state;
414 surf_network_model->model_private->finalize = finalize;
416 surf_network_model->suspend = action_suspend;
417 surf_network_model->resume = action_resume;
418 surf_network_model->is_suspended = action_is_suspended;
420 surf_network_model->extension.network.communicate = communicate;
422 /* Added the initialization for GTNetS interface */
423 if (gtnets_initialize(sg_tcp_gamma)) {
424 xbt_assert0(0, "Impossible to initialize GTNetS interface");
427 routing_model_create(sizeof(network_link_GTNETS_t), NULL);
430 #ifdef HAVE_LATENCY_BOUND_TRACKING
431 static int get_latency_limited(surf_action_t action)
438 void surf_network_model_init_GTNETS(const char *filename)
440 if (surf_network_model)
442 surf_network_model_init_internal();
443 define_callbacks(filename);
444 xbt_dynar_push(model_list, &surf_network_model);
446 #ifdef HAVE_LATENCY_BOUND_TRACKING
447 surf_network_model->get_latency_limited = get_latency_limited;
450 if (sg_gtnets_jitter > 0.0) {
451 gtnets_set_jitter(sg_gtnets_jitter);
452 gtnets_set_jitter_seed(sg_gtnets_jitter_seed);
455 update_model_description(surf_network_model_description,
456 "GTNets", surf_network_model);