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 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_dict_set(surf_network_model->resource_set, name, 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)
91 e_surf_resource_state_t state;
92 name = xbt_strdup(A_surfxml_link_id);
93 surf_parse_get_double(&bw, A_surfxml_link_bandwidth);
94 surf_parse_get_double(&lat, A_surfxml_link_latency);
95 state = SURF_RESOURCE_ON;
96 XBT_DEBUG("link_gtnets");
97 tmgr_trace_t bw_trace;
98 tmgr_trace_t state_trace;
99 tmgr_trace_t lat_trace;
101 bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
102 lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
103 state_trace = tmgr_trace_new(A_surfxml_link_state_file);
107 ("The GTNetS network model doesn't support bandwidth state traces");
109 XBT_INFO("The GTNetS network model doesn't support latency state traces");
111 XBT_INFO("The GTNetS network model doesn't support link state traces");
113 current_property_set = xbt_dict_new();
114 if (A_surfxml_link_sharing_policy == A_surfxml_link_sharing_policy_FULLDUPLEX)
116 link_new(bprintf("%s_UP",name), bw, lat, current_property_set);
117 link_new(bprintf("%s_DOWN",name), bw, lat, current_property_set);
120 else link_new(name, bw, lat, current_property_set);
123 /* Create the gtnets topology based on routing strategy */
124 static void create_gtnets_topology()
128 XBT_DEBUG("Starting topology generation");
129 // À refaire plus tard. Il faut prendre la liste des hôtes/routeurs (dans routing)
130 // À partir de cette liste, on les numérote.
131 // Ensuite, on peut utiliser les id pour refaire les appels GTNets qui suivent.
133 //get the onelinks from the parsed platform
134 xbt_dynar_t onelink_routes = global_routing->get_onelink_routes();
138 //save them in trace file
141 xbt_dynar_foreach(onelink_routes, iter, onelink) {
142 char *src = onelink->src;
143 char *dst = onelink->dst;
144 void *link = onelink->link_ptr;
145 src_id = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,src));
146 dst_id = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,dst));
148 if(src_id != dst_id){
149 XBT_DEBUG("Link (#%p), src (#%s), dst (#%s), src_id = %d, dst_id = %d", link,src,dst, src_id, dst_id);
150 XBT_DEBUG("Calling one link route");
151 if(global_routing->get_network_element_type(src) == SURF_NETWORK_ELEMENT_ROUTER){
152 gtnets_add_router(src_id);
154 if(global_routing->get_network_element_type(dst) == SURF_NETWORK_ELEMENT_ROUTER){
155 gtnets_add_router(dst_id);
157 route_onehop_new(src_id, dst_id, (network_link_GTNETS_t)(link));
161 if (XBT_LOG_ISENABLED(surf_network_gtnets, xbt_log_priority_debug)) {
162 gtnets_print_topology();
166 /* Main XML parsing */
167 static void define_callbacks(const char *file)
169 /* Figuring out the network links */
170 surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
171 surfxml_add_callback(ETag_surfxml_platform_cb_list,
172 &create_gtnets_topology);
175 static int resource_used(void *resource_id)
177 xbt_die("The resource_used feature is not implemented in GTNets model");
180 static int action_unref(surf_action_t action)
183 if (!action->refcount) {
184 xbt_swag_remove(action, action->state_set);
186 if (action->category)
187 xbt_free(action->category);
189 surf_action_free(&action);
195 static void action_cancel(surf_action_t action)
197 xbt_die("Cannot cancel GTNetS flow");
201 static void action_recycle(surf_action_t action)
203 xbt_die("Cannot recycle GTNetS flow");
207 static double action_get_remains(surf_action_t action)
209 return action->remains;
212 static void action_state_set(surf_action_t action,
213 e_surf_action_state_t state)
215 surf_action_state_set(action, state);
218 static double share_resources(double now)
220 xbt_swag_t running_actions =
221 surf_network_model->states.running_action_set;
223 //get the first relevant value from the running_actions list
224 if (!xbt_swag_size(running_actions))
227 xbt_assert0(time_to_next_flow_completion,
228 "Time to next flow completion not initialized!\n");
230 XBT_DEBUG("Calling gtnets_get_time_to_next_flow_completion");
231 time_to_next_flow_completion = gtnets_get_time_to_next_flow_completion();
232 XBT_DEBUG("gtnets_get_time_to_next_flow_completion received %lg",
233 time_to_next_flow_completion);
235 return time_to_next_flow_completion;
238 static void update_actions_state(double now, double delta)
240 surf_action_network_GTNETS_t action = NULL;
241 xbt_swag_t running_actions =
242 surf_network_model->states.running_action_set;
244 /* If there are no renning flows, just return */
245 if (time_to_next_flow_completion < 0.0) {
249 /* if delta == time_to_next_flow_completion, too. */
250 if (time_to_next_flow_completion <= delta) { /* run until the first flow completes */
256 if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
257 xbt_die("Cannot run GTNetS simulation until next flow completion");
260 xbt_die("GTNetS simulation couldn't find a flow that would complete");
263 xbt_swag_foreach(action, running_actions) {
264 XBT_DEBUG("Action (%p) remains old value: %f", action,
265 action->generic_action.remains);
266 double sent = gtnets_get_flow_rx(action);
269 double trace_sent = sent;
270 if (trace_sent == 0) {
271 //if sent is equals to 0, means that gtnets sent all the bytes
272 trace_sent = action->generic_action.cost;
274 // tracing resource utilization
275 // COMMENTED BY DAVID
276 // int src = TRACE_surf_gtnets_get_src (action);
277 // int dst = TRACE_surf_gtnets_get_dst (action);
278 // if (src != -1 && dst != -1){
279 // xbt_dynar_t route = used_routing->get_route(src, dst);
280 // network_link_GTNETS_t link;
282 // xbt_dynar_foreach(route, i, link) {
283 // TRACE_surf_link_set_utilization (link->generic_resource.name,
284 // action->generic_action.data, trace_sent/delta, now-delta, delta);
289 XBT_DEBUG("Sent value returned by GTNetS : %f", sent);
290 //need to trust this remain value
292 action->generic_action.remains = 0;
294 action->generic_action.remains =
295 action->generic_action.cost - sent;
297 XBT_DEBUG("Action (%p) remains new value: %f", action,
298 action->generic_action.remains);
301 for (i = 0; i < num_flows; i++) {
302 action = (surf_action_network_GTNETS_t) (metadata[i]);
304 action->generic_action.finish = now + time_to_next_flow_completion;
306 TRACE_surf_gtnets_destroy(action);
308 action_state_set((surf_action_t) action, SURF_ACTION_DONE);
309 XBT_DEBUG("----> Action (%p) just terminated", action);
313 } else { /* run for a given number of seconds */
314 if (gtnets_run(delta)) {
315 xbt_die("Cannot run GTNetS simulation");
322 static void update_resource_state(void *id,
323 tmgr_trace_event_t event_type,
324 double value, double date)
326 xbt_die("Cannot update model state for GTNetS simulation");
329 /* Max durations are not supported */
330 static surf_action_t communicate(const char *src_name,
331 const char *dst_name, double size,
336 // Utiliser le dictionnaire définit dans create_gtnets_topology pour initialiser correctement src et dst
338 surf_action_network_GTNETS_t action = NULL;
340 src = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,src_name));
341 dst = *((int *) xbt_dict_get_or_null(global_routing->root->to_index,dst_name));
342 xbt_assert0((src >= 0
343 && dst >= 0), "Either src or dst have invalid id (id<0)");
345 XBT_DEBUG("Setting flow src %d \"%s\", dst %d \"%s\"", src, src_name, dst,
348 xbt_dynar_t links = global_routing->get_route(src_name, dst_name);
349 route_new(src, dst, links, xbt_dynar_length(links));
352 surf_action_new(sizeof(s_surf_action_network_GTNETS_t), size,
353 surf_network_model, 0);
355 /* Add a flow to the GTNets Simulation, associated to this action */
356 if (gtnets_create_flow(src, dst, size, (void *) action) < 0) {
357 xbt_die(bprintf("Not route between host %s and host %s", src_name,
361 TRACE_surf_gtnets_communicate(action, src, dst);
364 return (surf_action_t) action;
367 /* Suspend a flow() */
368 static void action_suspend(surf_action_t action)
373 /* Resume a flow() */
374 static void action_resume(surf_action_t action)
379 /* Test whether a flow is suspended */
380 static int action_is_suspended(surf_action_t action)
385 static void finalize(void)
390 static void surf_network_model_init_internal(void)
392 surf_network_model = surf_model_init();
394 surf_network_model->name = "network GTNetS";
395 surf_network_model->action_unref = action_unref;
396 surf_network_model->action_cancel = action_cancel;
397 surf_network_model->action_recycle = action_recycle;
398 surf_network_model->action_state_set = action_state_set;
399 surf_network_model->get_remains = action_get_remains;
401 surf_network_model->model_private->resource_used = resource_used;
402 surf_network_model->model_private->share_resources = share_resources;
403 surf_network_model->model_private->update_actions_state =
404 update_actions_state;
405 surf_network_model->model_private->update_resource_state =
406 update_resource_state;
407 surf_network_model->model_private->finalize = finalize;
409 surf_network_model->suspend = action_suspend;
410 surf_network_model->resume = action_resume;
411 surf_network_model->is_suspended = action_is_suspended;
413 surf_network_model->extension.network.communicate = communicate;
415 /* Added the initialization for GTNetS interface */
416 if (gtnets_initialize(sg_tcp_gamma)) {
417 xbt_die("Impossible to initialize GTNetS interface");
420 routing_model_create(sizeof(network_link_GTNETS_t), NULL, NULL);
423 #ifdef HAVE_LATENCY_BOUND_TRACKING
424 static int get_latency_limited(surf_action_t action)
431 void surf_network_model_init_GTNETS(const char *filename)
433 if (surf_network_model)
435 surf_network_model_init_internal();
436 define_callbacks(filename);
437 xbt_dynar_push(model_list, &surf_network_model);
439 #ifdef HAVE_LATENCY_BOUND_TRACKING
440 surf_network_model->get_latency_limited = get_latency_limited;
443 if (sg_gtnets_jitter > 0.0) {
444 gtnets_set_jitter(sg_gtnets_jitter);
445 gtnets_set_jitter_seed(sg_gtnets_jitter_seed);
448 update_model_description(surf_network_model_description,
449 "GTNets", surf_network_model);