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_lib_get_or_null(link_lib, name, SURF_LINK_LEVEL)) {
30 XBT_DEBUG("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 XBT_DEBUG("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_die("Cannot create GTNetS link");
47 gtnets_link->id = link_count;
49 xbt_lib_set(link_lib, name, SURF_LINK_LEVEL, gtnets_link);
52 static void route_new(int src_id, int dst_id, xbt_dynar_t links,
55 network_link_GTNETS_t link;
60 XBT_IN("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
61 src_id, dst_id, links, nb_link);
63 /* Build the list of gtnets link IDs */
64 gtnets_links = (int *) calloc(nb_link, sizeof(int));
66 xbt_dynar_foreach(links, cursor, link) {
67 gtnets_links[i++] = link->id;
70 if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
71 xbt_die("Cannot create GTNetS route");
76 static void route_onehop_new(int src_id, int dst_id,
77 network_link_GTNETS_t link)
79 if (gtnets_add_onehop_route(src_id, dst_id, link->id)) {
80 xbt_die("Cannot create GTNetS route");
84 /* Parse the XML for a network link */
85 static void parse_link_init(void)
90 e_surf_resource_state_t state;
91 name = xbt_strdup(A_surfxml_link_id);
92 surf_parse_get_double(&bw, A_surfxml_link_bandwidth);
93 surf_parse_get_double(&lat, A_surfxml_link_latency);
94 state = SURF_RESOURCE_ON;
95 XBT_DEBUG("link_gtnets");
96 tmgr_trace_t bw_trace;
97 tmgr_trace_t state_trace;
98 tmgr_trace_t lat_trace;
100 bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
101 lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
102 state_trace = tmgr_trace_new(A_surfxml_link_state_file);
106 ("The GTNetS network model doesn't support bandwidth state traces");
108 XBT_INFO("The GTNetS network model doesn't support latency state traces");
110 XBT_INFO("The GTNetS network model doesn't support link state traces");
112 if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FULLDUPLEX)
114 link_new(bprintf("%s_UP",name), bw, lat, current_property_set);
115 link_new(bprintf("%s_DOWN",name), bw, lat, current_property_set);
118 else link_new(name, bw, lat, current_property_set);
119 current_property_set = NULL;
122 /* Create the gtnets topology based on routing strategy */
123 static void create_gtnets_topology()
127 XBT_DEBUG("Starting topology generation");
128 // À refaire plus tard. Il faut prendre la liste des hôtes/routeurs (dans routing)
129 // À partir de cette liste, on les numérote.
130 // Ensuite, on peut utiliser les id pour refaire les appels GTNets qui suivent.
132 //get the onelinks from the parsed platform
133 xbt_dynar_t onelink_routes = global_routing->get_onelink_routes();
137 //save them in trace file
140 xbt_dynar_foreach(onelink_routes, iter, onelink) {
141 char *src = onelink->src;
142 char *dst = onelink->dst;
143 void *link = onelink->link_ptr;
144 src_id = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,src));
145 dst_id = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,dst));
147 if(src_id != dst_id){
148 XBT_DEBUG("Link (#%p), src (#%s), dst (#%s), src_id = %d, dst_id = %d", link,src,dst, src_id, dst_id);
149 XBT_DEBUG("Calling one link route");
150 if(global_routing->get_network_element_type(src) == SURF_NETWORK_ELEMENT_ROUTER){
151 gtnets_add_router(src_id);
153 if(global_routing->get_network_element_type(dst) == SURF_NETWORK_ELEMENT_ROUTER){
154 gtnets_add_router(dst_id);
156 route_onehop_new(src_id, dst_id, (network_link_GTNETS_t)(link));
160 if (XBT_LOG_ISENABLED(surf_network_gtnets, xbt_log_priority_debug)) {
161 gtnets_print_topology();
165 /* Main XML parsing */
166 static void define_callbacks(const char *file)
168 /* Figuring out the network links */
169 surfxml_add_callback(ETag_surfxml_link_cb_list, &parse_link_init);
170 surfxml_add_callback(ETag_surfxml_platform_cb_list,
171 &create_gtnets_topology);
174 static int resource_used(void *resource_id)
176 xbt_die("The resource_used feature is not implemented in GTNets model");
179 static int action_unref(surf_action_t action)
182 if (!action->refcount) {
183 xbt_swag_remove(action, action->state_set);
185 if (action->category)
186 xbt_free(action->category);
188 surf_action_free(&action);
194 static void action_cancel(surf_action_t action)
196 xbt_die("Cannot cancel GTNetS flow");
200 static void action_recycle(surf_action_t action)
202 xbt_die("Cannot recycle GTNetS flow");
206 static double action_get_remains(surf_action_t action)
208 return action->remains;
211 static void action_state_set(surf_action_t action,
212 e_surf_action_state_t state)
214 surf_action_state_set(action, state);
217 static double share_resources(double now)
219 xbt_swag_t running_actions =
220 surf_network_model->states.running_action_set;
222 //get the first relevant value from the running_actions list
223 if (!xbt_swag_size(running_actions))
226 xbt_assert(time_to_next_flow_completion,
227 "Time to next flow completion not initialized!\n");
229 XBT_DEBUG("Calling gtnets_get_time_to_next_flow_completion");
230 time_to_next_flow_completion = gtnets_get_time_to_next_flow_completion();
231 XBT_DEBUG("gtnets_get_time_to_next_flow_completion received %lg",
232 time_to_next_flow_completion);
234 return time_to_next_flow_completion;
237 static void update_actions_state(double now, double delta)
239 surf_action_network_GTNETS_t action = NULL;
240 xbt_swag_t running_actions =
241 surf_network_model->states.running_action_set;
243 /* If there are no running flows, just return */
244 if (time_to_next_flow_completion < 0.0) {
248 /* if delta == time_to_next_flow_completion, too. */
249 if (time_to_next_flow_completion <= delta) { /* run until the first flow completes */
255 if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
256 xbt_die("Cannot run GTNetS simulation until next flow completion");
259 xbt_die("GTNetS simulation couldn't find a flow that would complete");
262 xbt_swag_foreach(action, running_actions) {
263 XBT_DEBUG("Action (%p) remains old value: %f", action,
264 action->generic_action.remains);
265 double sent = gtnets_get_flow_rx(action);
267 XBT_DEBUG("Sent value returned by GTNetS : %f", sent);
270 action->last_remains = action->generic_action.remains;
273 //need to trust this remain value
275 action->generic_action.remains = 0;
277 action->generic_action.remains =
278 action->generic_action.cost - sent;
281 // verify that this action is a finishing action.
283 for (i = 0; i < num_flows; i++) {
284 if(action == (surf_action_network_GTNETS_t) (metadata[i])){
290 // indeed this action have not yet started
291 // because of that we need to fix the remaining to the
292 // original total cost
293 if(found != 1 && action->generic_action.remains == 0 ){
294 action->generic_action.remains = action->generic_action.cost;
297 XBT_DEBUG("Action (%p) remains new value: %f", action,
298 action->generic_action.remains);
301 if (TRACE_is_enabled()) {
302 double last_amount_sent = (action->generic_action.cost - action->last_remains);
303 double amount_sent = (action->generic_action.cost - action->generic_action.remains);
305 // tracing resource utilization
306 xbt_dynar_t route = global_routing->get_route(action->src_name,
308 network_link_GTNETS_t link;
310 xbt_dynar_foreach(route, i, link) {
311 TRACE_surf_link_set_utilization (link->generic_resource.name,
312 action->generic_action.data,
313 (surf_action_t) action,
314 (amount_sent - last_amount_sent)/(delta),
324 for (i = 0; i < num_flows; i++) {
325 action = (surf_action_network_GTNETS_t) (metadata[i]);
329 action->generic_action.finish = now + time_to_next_flow_completion;
330 action_state_set((surf_action_t) action, SURF_ACTION_DONE);
331 XBT_DEBUG("----> Action (%p) just terminated", action);
334 TRACE_surf_gtnets_destroy(action);
339 } else { /* run for a given number of seconds */
340 if (gtnets_run(delta)) {
341 xbt_die("Cannot run GTNetS simulation");
348 static void update_resource_state(void *id,
349 tmgr_trace_event_t event_type,
350 double value, double date)
352 xbt_die("Cannot update model state for GTNetS simulation");
355 /* Max durations are not supported */
356 static surf_action_t communicate(const char *src_name,
357 const char *dst_name, double size,
362 // Utiliser le dictionnaire définit dans create_gtnets_topology pour initialiser correctement src et dst
364 surf_action_network_GTNETS_t action = NULL;
366 src = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,src_name));
367 dst = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,dst_name));
369 && dst >= 0), "Either src or dst have invalid id (id<0)");
371 XBT_DEBUG("Setting flow src %d \"%s\", dst %d \"%s\"", src, src_name, dst,
374 xbt_dynar_t links = global_routing->get_route(src_name, dst_name);
375 route_new(src, dst, links, xbt_dynar_length(links));
378 surf_action_new(sizeof(s_surf_action_network_GTNETS_t), size,
379 surf_network_model, 0);
382 action->last_remains = 0;
385 /* Add a flow to the GTNets Simulation, associated to this action */
386 if (gtnets_create_flow(src, dst, size, (void *) action) < 0) {
387 xbt_die("Not route between host %s and host %s", src_name, dst_name);
390 TRACE_surf_gtnets_communicate(action, src_name, dst_name);
393 return (surf_action_t) action;
396 /* Suspend a flow() */
397 static void action_suspend(surf_action_t action)
402 /* Resume a flow() */
403 static void action_resume(surf_action_t action)
408 /* Test whether a flow is suspended */
409 static int action_is_suspended(surf_action_t action)
415 static void gtnets_action_set_category(surf_action_t action, const char *category)
417 action->category = xbt_strdup (category);
421 static void finalize(void)
426 static void surf_network_model_init_internal(void)
428 surf_network_model = surf_model_init();
430 surf_network_model->name = "network GTNetS";
431 surf_network_model->action_unref = action_unref;
432 surf_network_model->action_cancel = action_cancel;
433 surf_network_model->action_recycle = action_recycle;
434 surf_network_model->action_state_set = action_state_set;
435 surf_network_model->get_remains = action_get_remains;
437 surf_network_model->model_private->resource_used = resource_used;
438 surf_network_model->model_private->share_resources = share_resources;
439 surf_network_model->model_private->update_actions_state =
440 update_actions_state;
441 surf_network_model->model_private->update_resource_state =
442 update_resource_state;
443 surf_network_model->model_private->finalize = finalize;
445 surf_network_model->suspend = action_suspend;
446 surf_network_model->resume = action_resume;
447 surf_network_model->is_suspended = action_is_suspended;
449 surf_network_model->set_category = gtnets_action_set_category;
452 surf_network_model->extension.network.communicate = communicate;
454 /* Added the initialization for GTNetS interface */
455 if (gtnets_initialize(sg_tcp_gamma)) {
456 xbt_die("Impossible to initialize GTNetS interface");
459 routing_model_create(sizeof(network_link_GTNETS_t), NULL, NULL);
462 #ifdef HAVE_LATENCY_BOUND_TRACKING
463 static int get_latency_limited(surf_action_t action)
469 void surf_network_model_init_GTNETS(const char *filename)
471 if (surf_network_model)
473 surf_network_model_init_internal();
474 define_callbacks(filename);
475 xbt_dynar_push(model_list, &surf_network_model);
477 #ifdef HAVE_LATENCY_BOUND_TRACKING
478 surf_network_model->get_latency_limited = get_latency_limited;
481 if (sg_gtnets_jitter > 0.0) {
482 gtnets_set_jitter(sg_gtnets_jitter);
483 gtnets_set_jitter_seed(sg_gtnets_jitter_seed);
486 update_model_description(surf_network_model_description,
487 "GTNets", surf_network_model);