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_t used_routing;
17 double sg_gtnets_jitter=0.0;
18 int sg_gtnets_jitter_seed=10;
20 static void link_new(char *name, double bw, double lat, xbt_dict_t props)
22 static int link_count = -1;
23 network_link_GTNETS_t gtnets_link;
24 network_link_GTNETS_t gtnets_link_friend;
29 if (xbt_dict_get_or_null(surf_network_model->resource_set, name)) {
34 TRACE_surf_link_declaration (name, bw, lat);
37 DEBUG1("Scanning link name %s", name);
38 sscanf(name, "%d_%d", &tmp_idsrc, &tmp_iddst);
39 DEBUG2("Link name split into %d and %d", tmp_idsrc, tmp_iddst);
41 xbt_assert0( (tmp_idsrc!=-1)&&(tmp_idsrc!=-1), "You need to respect fullduplex convention x_y for xml link id.");
43 name_friend = (char *)calloc(strlen(name), sizeof(char));
44 sprintf(name_friend, "%d_%d", tmp_iddst, tmp_idsrc);
46 gtnets_link = xbt_new0(s_network_link_GTNETS_t, 1);
47 gtnets_link->generic_resource.name = name;
48 gtnets_link->generic_resource.properties = props;
49 gtnets_link->bw_current = bw;
50 gtnets_link->lat_current = lat;
52 if((gtnets_link_friend=xbt_dict_get_or_null(surf_network_model->resource_set, name_friend))) {
53 gtnets_link->id = gtnets_link_friend->id;
57 DEBUG4("Adding new link, linkid %d, name %s, latency %g, bandwidth %g", link_count, name, lat, bw);
58 if (gtnets_add_link(link_count, bw, lat)) {
59 xbt_assert0(0, "Cannot create GTNetS link");
61 gtnets_link->id = link_count;
63 xbt_dict_set(surf_network_model->resource_set, name, gtnets_link,
67 static void route_new(int src_id, int dst_id, xbt_dynar_t links,int nb_link)
69 network_link_GTNETS_t link;
74 XBT_IN4("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
75 src_id, dst_id, links, nb_link);
77 /* Build the list of gtnets link IDs */
78 gtnets_links = (int *) calloc(nb_link, sizeof(int));
80 xbt_dynar_foreach(links, cursor, link) {
81 gtnets_links[i++] = link->id;
84 if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
85 xbt_assert0(0, "Cannot create GTNetS route");
90 static void route_onehop_new(int src_id, int dst_id,
91 network_link_GTNETS_t link)
93 if (gtnets_add_onehop_route(src_id, dst_id, link->id)) {
94 xbt_assert0(0, "Cannot create GTNetS route");
98 /* Parse the XML for a network link */
99 static void parse_link_init(void)
104 e_surf_resource_state_t state;
106 name = xbt_strdup(A_surfxml_link_id);
107 surf_parse_get_double(&bw, A_surfxml_link_bandwidth);
108 surf_parse_get_double(&lat, A_surfxml_link_latency);
109 state = SURF_RESOURCE_ON;
111 tmgr_trace_t bw_trace;
112 tmgr_trace_t state_trace;
113 tmgr_trace_t lat_trace;
115 bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
116 lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
117 state_trace = tmgr_trace_new(A_surfxml_link_state_file);
120 INFO0("The GTNetS network model doesn't support bandwidth state traces");
122 INFO0("The GTNetS network model doesn't support latency state traces");
124 INFO0("The GTNetS network model doesn't support link state traces");
126 current_property_set = xbt_dict_new();
127 link_new(name, bw, lat, current_property_set);
130 /* Create the gtnets topology based on routing strategy */
131 static void create_gtnets_topology()
133 xbt_dict_cursor_t cursor = NULL;
136 xbt_dict_t onelink_routes = used_routing->get_onelink_routes();
137 xbt_assert0(onelink_routes, "Error onelink_routes was not initialized");
139 DEBUG0("Starting topology generation");
141 xbt_dict_foreach(onelink_routes, cursor, key, data){
142 s_onelink_t link = (s_onelink_t) data;
144 DEBUG3("Link (#%d), src (#%d), dst (#%d)", ((network_link_GTNETS_t)(link->link_ptr))->id , link->src_id, link->dst_id);
145 DEBUG0("Calling one link route");
146 if(used_routing->is_router(link->src_id)){
147 gtnets_add_router(link->src_id);
149 if(used_routing->is_router(link->dst_id)){
150 gtnets_add_router(link->dst_id);
152 route_onehop_new(link->src_id, link->dst_id, (network_link_GTNETS_t)(link->link_ptr));
155 xbt_dict_free(&route_table);
156 if (XBT_LOG_ISENABLED(surf_network_gtnets, xbt_log_priority_debug)) {
157 gtnets_print_topology();
161 /* Main XML parsing */
162 static void define_callbacks(const char *file)
164 /* Figuring out the network links */
165 surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
166 surfxml_add_callback(ETag_surfxml_platform_cb_list, &create_gtnets_topology);
169 static int resource_used(void *resource_id)
171 xbt_assert0(0, "The resource_used feature is not implemented in GTNets model");
174 static int action_unref(surf_action_t action)
177 if (!action->refcount) {
178 xbt_swag_remove(action, action->state_set);
185 static void action_cancel(surf_action_t action)
187 xbt_assert0(0,"Cannot cancel GTNetS flow");
191 static void action_recycle(surf_action_t action)
193 xbt_assert0(0,"Cannot recycle GTNetS flow");
197 static double action_get_remains(surf_action_t action)
199 return action->remains;
202 static void action_state_set(surf_action_t action,
203 e_surf_action_state_t state)
205 surf_action_state_set(action, state);
208 static double share_resources(double now)
210 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
212 //get the first relevant value from the running_actions list
213 if (!xbt_swag_size(running_actions))
216 xbt_assert0(time_to_next_flow_completion,
217 "Time to next flow completion not initialized!\n");
219 DEBUG0("Calling gtnets_get_time_to_next_flow_completion");
220 time_to_next_flow_completion = gtnets_get_time_to_next_flow_completion();
221 DEBUG1("gtnets_get_time_to_next_flow_completion received %lg", time_to_next_flow_completion);
223 return time_to_next_flow_completion;
226 static void update_actions_state(double now, double delta)
228 surf_action_network_GTNETS_t action = NULL;
229 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
231 /* If there are no renning flows, just return */
232 if (time_to_next_flow_completion < 0.0) {
236 /* if delta == time_to_next_flow_completion, too. */
237 if (time_to_next_flow_completion <= delta) { /* run until the first flow completes */
243 if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
245 "Cannot run GTNetS simulation until next flow completion");
249 "GTNetS simulation couldn't find a flow that would complete");
252 xbt_swag_foreach(action, running_actions) {
253 DEBUG2("Action (%p) remains old value: %f", action,
254 action->generic_action.remains);
255 double sent = gtnets_get_flow_rx(action);
258 double trace_sent = sent;
259 if (trace_sent == 0){
260 //if sent is equals to 0, means that gtnets sent all the bytes
261 trace_sent = action->generic_action.cost;
263 // tracing resource utilization
264 int src = TRACE_surf_gtnets_get_src (action);
265 int dst = TRACE_surf_gtnets_get_dst (action);
266 if (src != -1 && dst != -1){
267 xbt_dynar_t route = used_routing->get_route(src, dst);
268 network_link_GTNETS_t link;
270 xbt_dynar_foreach(route, i, link) {
271 TRACE_surf_link_set_utilization (link->generic_resource.name,
272 action->generic_action.data, trace_sent/delta, now-delta, delta);
277 DEBUG1("Sent value returned by GTNetS : %f", sent);
278 //need to trust this remain value
280 action->generic_action.remains = 0;
282 action->generic_action.remains = action->generic_action.cost - sent;
284 DEBUG2("Action (%p) remains new value: %f", action,
285 action->generic_action.remains);
288 for (i = 0; i < num_flows; i++) {
289 action = (surf_action_network_GTNETS_t) (metadata[i]);
291 action->generic_action.finish = now + time_to_next_flow_completion;
293 TRACE_surf_gtnets_destroy (action);
295 action_state_set((surf_action_t) action, SURF_ACTION_DONE);
296 DEBUG1("----> Action (%p) just terminated", action);
300 } else { /* run for a given number of seconds */
301 if (gtnets_run(delta)) {
302 xbt_assert0(0, "Cannot run GTNetS simulation");
309 static void update_resource_state(void *id,
310 tmgr_trace_event_t event_type,
311 double value, double date)
313 xbt_assert0(0, "Cannot update model state for GTNetS simulation");
316 /* Max durations are not supported */
317 static surf_action_t communicate(const char *src_name, const char *dst_name,
318 int src, int dst, double size, double rate)
320 surf_action_network_GTNETS_t action = NULL;
322 xbt_assert0((src >= 0 && dst >= 0), "Either src or dst have invalid id (id<0)");
324 DEBUG4("Setting flow src %d \"%s\", dst %d \"%s\"", src, src_name, dst, dst_name);
326 xbt_dynar_t links = used_routing->get_route(src, dst);
327 route_new(src, dst, links, xbt_dynar_length(links));
329 action = surf_action_new(sizeof(s_surf_action_network_GTNETS_t), size, surf_network_model, 0);
331 /* Add a flow to the GTNets Simulation, associated to this action */
332 if (gtnets_create_flow(src, dst, size, (void *) action) < 0) {
333 xbt_assert2(0, "Not route between host %s and host %s", src_name,
337 TRACE_surf_gtnets_communicate (action, src, dst);
340 return (surf_action_t) action;
343 /* Suspend a flow() */
344 static void action_suspend(surf_action_t action)
349 /* Resume a flow() */
350 static void action_resume(surf_action_t action)
355 /* Test whether a flow is suspended */
356 static int action_is_suspended(surf_action_t action)
361 static void finalize(void)
366 static void surf_network_model_init_internal(void)
368 surf_network_model = surf_model_init();
370 surf_network_model->name = "network GTNetS";
371 surf_network_model->action_unref = action_unref;
372 surf_network_model->action_cancel = action_cancel;
373 surf_network_model->action_recycle = action_recycle;
374 surf_network_model->action_state_set = action_state_set;
375 surf_network_model->get_remains = action_get_remains;
377 surf_network_model->model_private->resource_used = resource_used;
378 surf_network_model->model_private->share_resources = share_resources;
379 surf_network_model->model_private->update_actions_state =
380 update_actions_state;
381 surf_network_model->model_private->update_resource_state =
382 update_resource_state;
383 surf_network_model->model_private->finalize = finalize;
385 surf_network_model->suspend = action_suspend;
386 surf_network_model->resume = action_resume;
387 surf_network_model->is_suspended = action_is_suspended;
389 surf_network_model->extension.network.communicate = communicate;
391 /* Added the initialization for GTNetS interface */
392 if (gtnets_initialize(sg_tcp_gamma)) {
393 xbt_assert0(0, "Impossible to initialize GTNetS interface");
396 routing_model_create(sizeof(network_link_GTNETS_t), NULL);
399 static int get_latency_limited(surf_action_t action){
404 void surf_network_model_init_GTNETS(const char *filename)
406 if (surf_network_model)
408 surf_network_model_init_internal();
409 define_callbacks(filename);
410 xbt_dynar_push(model_list, &surf_network_model);
412 surf_network_model->get_latency_limited = get_latency_limited;
414 if(sg_gtnets_jitter > 0.0){
415 gtnets_set_jitter(sg_gtnets_jitter);
416 gtnets_set_jitter_seed(sg_gtnets_jitter_seed);
419 update_model_description(surf_network_model_description,
420 "GTNets", surf_network_model);