1 /* Copyright (c) 2005 Henri Casanova. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "network_gtnets_private.h"
7 #include "gtnets/gtnets_interface.h"
10 static double time_to_next_flow_completion = -1;
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_gtnets, surf,
13 "Logging specific to the SURF network GTNetS module");
15 extern routing_t used_routing;
16 double sg_gtnets_jitter=0.0;
17 int sg_gtnets_jitter_seed=10;
19 static void link_new(char *name, double bw, double lat, xbt_dict_t props)
21 static int link_count = -1;
22 network_link_GTNETS_t gtnets_link;
24 if (xbt_dict_get_or_null(surf_network_model->resource_set, name)) {
30 if (gtnets_add_link(link_count, bw, lat)) {
31 xbt_assert0(0, "Cannot create GTNetS link");
34 /* KF: Insert entry in the dictionary */
35 gtnets_link = xbt_new0(s_network_link_GTNETS_t, 1);
36 gtnets_link->generic_resource.name = name;
37 gtnets_link->generic_resource.properties = props;
38 gtnets_link->bw_current = bw;
39 gtnets_link->lat_current = lat;
40 gtnets_link->id = link_count;
42 TRACE_surf_net_link_new (name, bw, lat);
44 xbt_dict_set(surf_network_model->resource_set, name, gtnets_link,
48 static void route_new(int src_id, int dst_id, xbt_dynar_t links,int nb_link)
50 network_link_GTNETS_t link;
55 XBT_IN4("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
56 src_id, dst_id, links, nb_link);
58 /* Build the list of gtnets link IDs */
59 gtnets_links = (int *) calloc(nb_link, sizeof(int));
61 xbt_dynar_foreach(links, cursor, link) {
62 gtnets_links[i++] = link->id;
65 if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
66 xbt_assert0(0, "Cannot create GTNetS route");
71 static void route_onehop_new(int src_id, int dst_id,
72 network_link_GTNETS_t link)
74 if (gtnets_add_onehop_route(src_id, dst_id, link->id)) {
75 xbt_assert0(0, "Cannot create GTNetS route");
79 /* Parse the XML for a network link */
80 static void parse_link_init(void)
85 e_surf_resource_state_t state;
87 name = xbt_strdup(A_surfxml_link_id);
88 surf_parse_get_double(&bw, A_surfxml_link_bandwidth);
89 surf_parse_get_double(&lat, A_surfxml_link_latency);
90 state = SURF_RESOURCE_ON;
92 tmgr_trace_t bw_trace;
93 tmgr_trace_t state_trace;
94 tmgr_trace_t lat_trace;
96 bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
97 lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
98 state_trace = tmgr_trace_new(A_surfxml_link_state_file);
101 INFO0("The GTNetS network model doesn't support bandwidth state traces");
103 INFO0("The GTNetS network model doesn't support latency state traces");
105 INFO0("The GTNetS network model doesn't support link state traces");
107 current_property_set = xbt_dict_new();
108 link_new(name, bw, lat, current_property_set);
111 /* Create the gtnets topology based on routing strategy */
112 static void create_gtnets_topology()
114 xbt_dict_cursor_t cursor = NULL;
117 xbt_dict_t onelink_routes = used_routing->get_onelink_routes();
118 xbt_assert0(onelink_routes, "Error onelink_routes was not initialized");
120 DEBUG0("Starting topology generation");
122 xbt_dict_foreach(onelink_routes, cursor, key, data){
123 s_onelink_t link = (s_onelink_t) data;
124 DEBUG3("Link (#%d), src (#%d), dst (#%d)", ((network_link_GTNETS_t)(link->link_ptr))->id , link->src_id, link->dst_id);
125 DEBUG0("Calling one link route");
126 if(used_routing->is_router(link->src_id)){
127 gtnets_add_router(link->src_id);
129 if(used_routing->is_router(link->dst_id)){
130 gtnets_add_router(link->dst_id);
132 route_onehop_new(link->src_id, link->dst_id, (network_link_GTNETS_t)(link->link_ptr));
135 xbt_dict_free(&route_table);
136 if (XBT_LOG_ISENABLED(surf_network_gtnets, xbt_log_priority_debug)) {
137 gtnets_print_topology();
141 /* Main XML parsing */
142 static void define_callbacks(const char *file)
144 /* Figuring out the network links */
145 surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
146 surfxml_add_callback(ETag_surfxml_platform_cb_list, &create_gtnets_topology);
149 static int resource_used(void *resource_id)
151 xbt_assert0(0, "The resource_used feature is not implemented in GTNets model");
154 static int action_unref(surf_action_t action)
157 if (!action->refcount) {
158 xbt_swag_remove(action, action->state_set);
165 static void action_cancel(surf_action_t action)
167 xbt_assert0(0,"Cannot cancel GTNetS flow");
171 static void action_recycle(surf_action_t action)
173 xbt_assert0(0,"Cannot recycle GTNetS flow");
177 static double action_get_remains(surf_action_t action)
179 return action->remains;
182 static void action_state_set(surf_action_t action,
183 e_surf_action_state_t state)
185 surf_action_state_set(action, state);
188 static double share_resources(double now)
190 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
192 //get the first relevant value from the running_actions list
193 if (!xbt_swag_size(running_actions))
196 xbt_assert0(time_to_next_flow_completion,
197 "Time to next flow completion not initialized!\n");
199 DEBUG0("Calling gtnets_get_time_to_next_flow_completion");
200 time_to_next_flow_completion = gtnets_get_time_to_next_flow_completion();
201 DEBUG1("gtnets_get_time_to_next_flow_completion received %lg", time_to_next_flow_completion);
203 return time_to_next_flow_completion;
206 static void update_actions_state(double now, double delta)
208 surf_action_network_GTNETS_t action = NULL;
209 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
211 /* If there are no renning flows, just return */
212 if (time_to_next_flow_completion < 0.0) {
216 /* if delta == time_to_next_flow_completion, too. */
217 if (time_to_next_flow_completion <= delta) { /* run until the first flow completes */
223 if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
225 "Cannot run GTNetS simulation until next flow completion");
229 "GTNetS simulation couldn't find a flow that would complete");
232 xbt_swag_foreach(action, running_actions) {
233 DEBUG2("Action (%p) remains old value: %f", action,
234 action->generic_action.remains);
235 double remain = gtnets_get_flow_rx(action);
238 // tracing surf action
239 TRACE_surf_update_action_state (action, action->generic_action.data,
240 (action->generic_action.remains-remain)/delta, "BandwidthUsed", now-delta, delta);
242 // tracing resource utilization
243 int src = TRACE_surf_gtnets_get_src (action);
244 int dst = TRACE_surf_gtnets_get_dst (action);
245 if (src != -1 && dst != -1){
246 xbt_dynar_t route = used_routing->get_route(src, dst);
247 network_link_GTNETS_t link;
249 xbt_dynar_foreach(route, i, link) {
251 TRACE_surf_update_action_state_net_resource (link->generic_resource.name,
252 action->generic_action.data, (action->generic_action.remains-remain)/delta, now-delta, delta);
257 DEBUG1("Remain value returned by GTNetS : %f", remain);
258 //need to trust this remain value
260 action->generic_action.remains = 0;
262 action->generic_action.remains = action->generic_action.cost - remain;
264 DEBUG2("Action (%p) remains new value: %f", action,
265 action->generic_action.remains);
268 for (i = 0; i < num_flows; i++) {
269 action = (surf_action_network_GTNETS_t) (metadata[i]);
271 action->generic_action.finish = now + time_to_next_flow_completion;
273 TRACE_surf_gtnets_destroy (action);
275 action_state_set((surf_action_t) action, SURF_ACTION_DONE);
276 DEBUG1("----> Action (%p) just terminated", action);
280 } else { /* run for a given number of seconds */
281 if (gtnets_run(delta)) {
282 xbt_assert0(0, "Cannot run GTNetS simulation");
289 static void update_resource_state(void *id,
290 tmgr_trace_event_t event_type,
291 double value, double date)
293 xbt_assert0(0, "Cannot update model state for GTNetS simulation");
296 /* Max durations are not supported */
297 static surf_action_t communicate(const char *src_name, const char *dst_name,
298 int src, int dst, double size, double rate)
300 surf_action_network_GTNETS_t action = NULL;
302 xbt_assert0((src >= 0 && dst >= 0), "Either src or dst have invalid id (id<0)");
304 DEBUG4("Setting flow src %d \"%s\", dst %d \"%s\"", src, src_name, dst, dst_name);
306 xbt_dynar_t links = used_routing->get_route(src, dst);
307 route_new(src, dst, links, xbt_dynar_length(links));
309 action = surf_action_new(sizeof(s_surf_action_network_GTNETS_t), size, surf_network_model, 0);
311 /* Add a flow to the GTNets Simulation, associated to this action */
312 if (gtnets_create_flow(src, dst, size, (void *) action) < 0) {
313 xbt_assert2(0, "Not route between host %s and host %s", src_name,
317 TRACE_surf_gtnets_communicate (action, src, dst);
320 return (surf_action_t) action;
323 /* Suspend a flow() */
324 static void action_suspend(surf_action_t action)
329 /* Resume a flow() */
330 static void action_resume(surf_action_t action)
335 /* Test whether a flow is suspended */
336 static int action_is_suspended(surf_action_t action)
341 static void finalize(void)
343 xbt_dict_free(&surf_network_model->resource_set);
345 surf_model_exit(surf_network_model);
347 free(surf_network_model);
348 surf_network_model = NULL;
353 static void surf_network_model_init_internal(void)
355 surf_network_model = surf_model_init();
357 surf_network_model->name = "network GTNetS";
358 surf_network_model->action_unref = action_unref;
359 surf_network_model->action_cancel = action_cancel;
360 surf_network_model->action_recycle = action_recycle;
361 surf_network_model->action_state_set = action_state_set;
362 surf_network_model->get_remains = action_get_remains;
364 surf_network_model->model_private->resource_used = resource_used;
365 surf_network_model->model_private->share_resources = share_resources;
366 surf_network_model->model_private->update_actions_state =
367 update_actions_state;
368 surf_network_model->model_private->update_resource_state =
369 update_resource_state;
370 surf_network_model->model_private->finalize = finalize;
372 surf_network_model->suspend = action_suspend;
373 surf_network_model->resume = action_resume;
374 surf_network_model->is_suspended = action_is_suspended;
376 surf_network_model->extension.network.communicate = communicate;
378 /* Added the initialization for GTNetS interface */
379 if (gtnets_initialize()) {
380 xbt_assert0(0, "Impossible to initialize GTNetS interface");
383 routing_model_create(sizeof(network_link_GTNETS_t), NULL);
387 void surf_network_model_init_GTNETS(const char *filename)
389 if (surf_network_model)
391 surf_network_model_init_internal();
392 define_callbacks(filename);
393 xbt_dynar_push(model_list, &surf_network_model);
395 if(sg_gtnets_jitter > 0.0){
396 gtnets_set_jitter(sg_gtnets_jitter);
397 gtnets_set_jitter_seed(sg_gtnets_jitter_seed);
400 update_model_description(surf_network_model_description,
401 "GTNets", surf_network_model);