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;
30 if (xbt_dict_get_or_null(surf_network_model->resource_set, name)) {
35 TRACE_surf_link_declaration (name, bw, lat);
38 DEBUG1("Scanning link name %s", name);
39 sscanf(name, "%d_%d", &tmp_idsrc, &tmp_iddst);
40 DEBUG2("Link name split into %d and %d", tmp_idsrc, tmp_iddst);
42 xbt_assert0( (tmp_idsrc!=-1)&&(tmp_idsrc!=-1), "You need to respect fullduplex convention x_y for xml link id.");
44 name_friend = (char *)calloc(strlen(name), sizeof(char));
45 sprintf(name_friend, "%d_%d", tmp_iddst, tmp_idsrc);
47 gtnets_link = xbt_new0(s_network_link_GTNETS_t, 1);
48 gtnets_link->generic_resource.name = name;
49 gtnets_link->generic_resource.properties = props;
50 gtnets_link->bw_current = bw;
51 gtnets_link->lat_current = lat;
53 if((gtnets_link_friend=xbt_dict_get_or_null(surf_network_model->resource_set, name_friend))) {
54 gtnets_link->id = gtnets_link_friend->id;
58 DEBUG4("Adding new link, linkid %d, name %s, latency %g, bandwidth %g", link_count, name, lat, bw);
59 if (gtnets_add_link(link_count, bw, lat)) {
60 xbt_assert0(0, "Cannot create GTNetS link");
62 gtnets_link->id = link_count;
64 xbt_dict_set(surf_network_model->resource_set, name, gtnets_link,
68 static void route_new(int src_id, int dst_id, xbt_dynar_t links,int nb_link)
70 network_link_GTNETS_t link;
75 XBT_IN4("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
76 src_id, dst_id, links, nb_link);
78 /* Build the list of gtnets link IDs */
79 gtnets_links = (int *) calloc(nb_link, sizeof(int));
81 xbt_dynar_foreach(links, cursor, link) {
82 gtnets_links[i++] = link->id;
85 if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
86 xbt_assert0(0, "Cannot create GTNetS route");
91 static void route_onehop_new(int src_id, int dst_id,
92 network_link_GTNETS_t link)
94 if (gtnets_add_onehop_route(src_id, dst_id, link->id)) {
95 xbt_assert0(0, "Cannot create GTNetS route");
99 /* Parse the XML for a network link */
100 static void parse_link_init(void)
105 e_surf_resource_state_t state;
107 name = xbt_strdup(A_surfxml_link_id);
108 surf_parse_get_double(&bw, A_surfxml_link_bandwidth);
109 surf_parse_get_double(&lat, A_surfxml_link_latency);
110 state = SURF_RESOURCE_ON;
112 tmgr_trace_t bw_trace;
113 tmgr_trace_t state_trace;
114 tmgr_trace_t lat_trace;
116 bw_trace = tmgr_trace_new(A_surfxml_link_bandwidth_file);
117 lat_trace = tmgr_trace_new(A_surfxml_link_latency_file);
118 state_trace = tmgr_trace_new(A_surfxml_link_state_file);
121 INFO0("The GTNetS network model doesn't support bandwidth state traces");
123 INFO0("The GTNetS network model doesn't support latency state traces");
125 INFO0("The GTNetS network model doesn't support link state traces");
127 current_property_set = xbt_dict_new();
128 link_new(name, bw, lat, current_property_set);
131 /* Create the gtnets topology based on routing strategy */
132 static void create_gtnets_topology()
134 xbt_dict_cursor_t cursor = NULL;
137 xbt_dict_t onelink_routes = used_routing->get_onelink_routes();
138 xbt_assert0(onelink_routes, "Error onelink_routes was not initialized");
140 DEBUG0("Starting topology generation");
142 xbt_dict_foreach(onelink_routes, cursor, key, data){
143 s_onelink_t link = (s_onelink_t) data;
145 DEBUG3("Link (#%d), src (#%d), dst (#%d)", ((network_link_GTNETS_t)(link->link_ptr))->id , link->src_id, link->dst_id);
146 DEBUG0("Calling one link route");
147 if(used_routing->is_router(link->src_id)){
148 gtnets_add_router(link->src_id);
150 if(used_routing->is_router(link->dst_id)){
151 gtnets_add_router(link->dst_id);
153 route_onehop_new(link->src_id, link->dst_id, (network_link_GTNETS_t)(link->link_ptr));
156 xbt_dict_free(&route_table);
157 if (XBT_LOG_ISENABLED(surf_network_gtnets, xbt_log_priority_debug)) {
158 gtnets_print_topology();
162 /* Main XML parsing */
163 static void define_callbacks(const char *file)
165 /* Figuring out the network links */
166 surfxml_add_callback(STag_surfxml_link_cb_list, &parse_link_init);
167 surfxml_add_callback(ETag_surfxml_platform_cb_list, &create_gtnets_topology);
170 static int resource_used(void *resource_id)
172 xbt_assert0(0, "The resource_used feature is not implemented in GTNets model");
175 static int action_unref(surf_action_t action)
178 if (!action->refcount) {
179 xbt_swag_remove(action, action->state_set);
186 static void action_cancel(surf_action_t action)
188 xbt_assert0(0,"Cannot cancel GTNetS flow");
192 static void action_recycle(surf_action_t action)
194 xbt_assert0(0,"Cannot recycle GTNetS flow");
198 static double action_get_remains(surf_action_t action)
200 return action->remains;
203 static void action_state_set(surf_action_t action,
204 e_surf_action_state_t state)
206 surf_action_state_set(action, state);
209 static double share_resources(double now)
211 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
213 //get the first relevant value from the running_actions list
214 if (!xbt_swag_size(running_actions))
217 xbt_assert0(time_to_next_flow_completion,
218 "Time to next flow completion not initialized!\n");
220 DEBUG0("Calling gtnets_get_time_to_next_flow_completion");
221 time_to_next_flow_completion = gtnets_get_time_to_next_flow_completion();
222 DEBUG1("gtnets_get_time_to_next_flow_completion received %lg", time_to_next_flow_completion);
224 return time_to_next_flow_completion;
227 static void update_actions_state(double now, double delta)
229 surf_action_network_GTNETS_t action = NULL;
230 xbt_swag_t running_actions = surf_network_model->states.running_action_set;
232 /* If there are no renning flows, just return */
233 if (time_to_next_flow_completion < 0.0) {
237 /* if delta == time_to_next_flow_completion, too. */
238 if (time_to_next_flow_completion <= delta) { /* run until the first flow completes */
244 if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
246 "Cannot run GTNetS simulation until next flow completion");
250 "GTNetS simulation couldn't find a flow that would complete");
253 xbt_swag_foreach(action, running_actions) {
254 DEBUG2("Action (%p) remains old value: %f", action,
255 action->generic_action.remains);
256 double sent = gtnets_get_flow_rx(action);
259 double trace_sent = sent;
260 if (trace_sent == 0){
261 //if sent is equals to 0, means that gtnets sent all the bytes
262 trace_sent = action->generic_action.cost;
264 // tracing resource utilization
265 int src = TRACE_surf_gtnets_get_src (action);
266 int dst = TRACE_surf_gtnets_get_dst (action);
267 if (src != -1 && dst != -1){
268 xbt_dynar_t route = used_routing->get_route(src, dst);
269 network_link_GTNETS_t link;
271 xbt_dynar_foreach(route, i, link) {
272 TRACE_surf_link_set_utilization (link->generic_resource.name,
273 action->generic_action.data, trace_sent/delta, now-delta, delta);
278 DEBUG1("Sent value returned by GTNetS : %f", sent);
279 //need to trust this remain value
281 action->generic_action.remains = 0;
283 action->generic_action.remains = action->generic_action.cost - sent;
285 DEBUG2("Action (%p) remains new value: %f", action,
286 action->generic_action.remains);
289 for (i = 0; i < num_flows; i++) {
290 action = (surf_action_network_GTNETS_t) (metadata[i]);
292 action->generic_action.finish = now + time_to_next_flow_completion;
294 TRACE_surf_gtnets_destroy (action);
296 action_state_set((surf_action_t) action, SURF_ACTION_DONE);
297 DEBUG1("----> Action (%p) just terminated", action);
301 } else { /* run for a given number of seconds */
302 if (gtnets_run(delta)) {
303 xbt_assert0(0, "Cannot run GTNetS simulation");
310 static void update_resource_state(void *id,
311 tmgr_trace_event_t event_type,
312 double value, double date)
314 xbt_assert0(0, "Cannot update model state for GTNetS simulation");
317 /* Max durations are not supported */
318 static surf_action_t communicate(const char *src_name, const char *dst_name,
319 int src, int dst, double size, double rate)
321 surf_action_network_GTNETS_t action = NULL;
323 xbt_assert0((src >= 0 && dst >= 0), "Either src or dst have invalid id (id<0)");
325 DEBUG4("Setting flow src %d \"%s\", dst %d \"%s\"", src, src_name, dst, dst_name);
327 xbt_dynar_t links = used_routing->get_route(src, dst);
328 route_new(src, dst, links, xbt_dynar_length(links));
330 action = surf_action_new(sizeof(s_surf_action_network_GTNETS_t), size, surf_network_model, 0);
332 /* Add a flow to the GTNets Simulation, associated to this action */
333 if (gtnets_create_flow(src, dst, size, (void *) action) < 0) {
334 xbt_assert2(0, "Not route between host %s and host %s", src_name,
338 TRACE_surf_gtnets_communicate (action, src, dst);
341 return (surf_action_t) action;
344 /* Suspend a flow() */
345 static void action_suspend(surf_action_t action)
350 /* Resume a flow() */
351 static void action_resume(surf_action_t action)
356 /* Test whether a flow is suspended */
357 static int action_is_suspended(surf_action_t action)
362 static void finalize(void)
367 static void surf_network_model_init_internal(void)
369 surf_network_model = surf_model_init();
371 surf_network_model->name = "network GTNetS";
372 surf_network_model->action_unref = action_unref;
373 surf_network_model->action_cancel = action_cancel;
374 surf_network_model->action_recycle = action_recycle;
375 surf_network_model->action_state_set = action_state_set;
376 surf_network_model->get_remains = action_get_remains;
378 surf_network_model->model_private->resource_used = resource_used;
379 surf_network_model->model_private->share_resources = share_resources;
380 surf_network_model->model_private->update_actions_state =
381 update_actions_state;
382 surf_network_model->model_private->update_resource_state =
383 update_resource_state;
384 surf_network_model->model_private->finalize = finalize;
386 surf_network_model->suspend = action_suspend;
387 surf_network_model->resume = action_resume;
388 surf_network_model->is_suspended = action_is_suspended;
390 surf_network_model->extension.network.communicate = communicate;
392 /* Added the initialization for GTNetS interface */
393 if (gtnets_initialize(sg_tcp_gamma)) {
394 xbt_assert0(0, "Impossible to initialize GTNetS interface");
397 routing_model_create(sizeof(network_link_GTNETS_t), NULL);
400 static int get_latency_limited(surf_action_t action){
405 void surf_network_model_init_GTNETS(const char *filename)
407 if (surf_network_model)
409 surf_network_model_init_internal();
410 define_callbacks(filename);
411 xbt_dynar_push(model_list, &surf_network_model);
413 surf_network_model->get_latency_limited = get_latency_limited;
415 if(sg_gtnets_jitter > 0.0){
416 gtnets_set_jitter(sg_gtnets_jitter);
417 gtnets_set_jitter_seed(sg_gtnets_jitter_seed);
420 update_model_description(surf_network_model_description,
421 "GTNets", surf_network_model);