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removing code that was used to trace every single surf action
[simgrid.git] / src / surf / network_gtnets.c
1 /* Copyright (c) 2005 Henri Casanova. All rights reserved.                  */
2
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. */
5
6 #include "network_gtnets_private.h"
7 #include "gtnets/gtnets_interface.h"
8 #include "xbt/str.h"
9
10 static double time_to_next_flow_completion = -1;
11
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_network_gtnets, surf,
13                                 "Logging specific to the SURF network GTNetS module");
14
15 extern routing_t used_routing;
16 double sg_gtnets_jitter=0.0;
17 int sg_gtnets_jitter_seed=10;
18
19 static void link_new(char *name, double bw, double lat, xbt_dict_t props)
20 {
21   static int link_count = -1;
22   network_link_GTNETS_t gtnets_link;
23
24   if (xbt_dict_get_or_null(surf_network_model->resource_set, name)) {
25     return;
26   }
27
28   link_count++;
29
30   if (gtnets_add_link(link_count, bw, lat)) {
31     xbt_assert0(0, "Cannot create GTNetS link");
32   }
33
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;
41 #ifdef HAVE_TRACING
42   TRACE_surf_link_declaration (name, bw, lat);
43 #endif
44   xbt_dict_set(surf_network_model->resource_set, name, gtnets_link,
45                surf_resource_free);
46 }
47
48 static void route_new(int src_id, int dst_id, xbt_dynar_t links,int nb_link)
49 {
50   network_link_GTNETS_t link;
51   unsigned int cursor;
52   int i=0;
53   int *gtnets_links;
54
55   XBT_IN4("(src_id=%d, dst_id=%d, links=%p, nb_link=%d)",
56           src_id, dst_id, links, nb_link);
57
58   /* Build the list of gtnets link IDs */
59   gtnets_links = (int *) calloc(nb_link, sizeof(int));
60   i = 0;
61   xbt_dynar_foreach(links, cursor, link) {
62     gtnets_links[i++] = link->id;
63   }
64
65   if (gtnets_add_route(src_id, dst_id, gtnets_links, nb_link)) {
66     xbt_assert0(0, "Cannot create GTNetS route");
67   }
68   XBT_OUT;
69 }
70
71 static void route_onehop_new(int src_id, int dst_id,
72                              network_link_GTNETS_t link)
73 {
74   if (gtnets_add_onehop_route(src_id, dst_id, link->id)) {
75     xbt_assert0(0, "Cannot create GTNetS route");
76   }
77 }
78
79 /* Parse the XML for a network link */
80 static void parse_link_init(void)
81 {
82   char *name;
83   double bw;
84   double lat;
85   e_surf_resource_state_t state;
86
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;
91
92   tmgr_trace_t bw_trace;
93   tmgr_trace_t state_trace;
94   tmgr_trace_t lat_trace;
95
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);
99
100   if (bw_trace)
101     INFO0("The GTNetS network model doesn't support bandwidth state traces");
102   if (lat_trace)
103     INFO0("The GTNetS network model doesn't support latency state traces");
104   if (state_trace)
105     INFO0("The GTNetS network model doesn't support link state traces");
106
107   current_property_set = xbt_dict_new();
108   link_new(name, bw, lat, current_property_set);
109 }
110
111 /* Create the gtnets topology based on routing strategy */
112 static void create_gtnets_topology()
113 {
114   xbt_dict_cursor_t cursor = NULL;
115   char *key, *data;
116
117   xbt_dict_t onelink_routes = used_routing->get_onelink_routes();
118   xbt_assert0(onelink_routes, "Error onelink_routes was not initialized");
119
120   DEBUG0("Starting topology generation");
121
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);
128     }
129     if(used_routing->is_router(link->dst_id)){
130         gtnets_add_router(link->dst_id);
131     }
132     route_onehop_new(link->src_id, link->dst_id, (network_link_GTNETS_t)(link->link_ptr));
133   }
134
135   xbt_dict_free(&route_table);
136   if (XBT_LOG_ISENABLED(surf_network_gtnets, xbt_log_priority_debug)) {
137           gtnets_print_topology();
138   }
139 }
140
141 /* Main XML parsing */
142 static void define_callbacks(const char *file)
143 {
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);
147 }
148
149 static int resource_used(void *resource_id)
150 {
151   xbt_assert0(0, "The resource_used feature is not implemented in GTNets model");
152 }
153
154 static int action_unref(surf_action_t action)
155 {
156   action->refcount--;
157   if (!action->refcount) {
158     xbt_swag_remove(action, action->state_set);
159     free(action);
160     return 1;
161   }
162   return 0;
163 }
164
165 static void action_cancel(surf_action_t action)
166 {
167   xbt_assert0(0,"Cannot cancel GTNetS flow");
168   return;
169 }
170
171 static void action_recycle(surf_action_t action)
172 {
173   xbt_assert0(0,"Cannot recycle GTNetS flow");
174   return;
175 }
176
177 static double action_get_remains(surf_action_t action)
178 {
179   return action->remains;
180 }
181
182 static void action_state_set(surf_action_t action,
183                              e_surf_action_state_t state)
184 {
185   surf_action_state_set(action, state);
186 }
187
188 static double share_resources(double now)
189 {
190   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
191
192   //get the first relevant value from the running_actions list
193   if (!xbt_swag_size(running_actions))
194     return -1.0;
195
196   xbt_assert0(time_to_next_flow_completion,
197               "Time to next flow completion not initialized!\n");
198
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);
202
203   return time_to_next_flow_completion;
204 }
205
206 static void update_actions_state(double now, double delta)
207 {
208   surf_action_network_GTNETS_t action = NULL;
209   xbt_swag_t running_actions = surf_network_model->states.running_action_set;
210
211   /* If there are no renning flows, just return */
212   if (time_to_next_flow_completion < 0.0) {
213     return;
214   }
215
216   /* if delta == time_to_next_flow_completion, too. */
217   if (time_to_next_flow_completion <= delta) {  /* run until the first flow completes */
218     void **metadata;
219     int i, num_flows;
220
221     num_flows = 0;
222
223     if (gtnets_run_until_next_flow_completion(&metadata, &num_flows)) {
224       xbt_assert0(0,
225                   "Cannot run GTNetS simulation until next flow completion");
226     }
227     if (num_flows < 1) {
228       xbt_assert0(0,
229                   "GTNetS simulation couldn't find a flow that would complete");
230     }
231
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);
236
237 #ifdef HAVE_TRACING
238       // tracing resource utilization
239       int src = TRACE_surf_gtnets_get_src (action);
240       int dst = TRACE_surf_gtnets_get_dst (action);
241       if (src != -1 && dst != -1){
242         xbt_dynar_t route = used_routing->get_route(src, dst);
243         network_link_GTNETS_t link;
244         unsigned int i;
245         xbt_dynar_foreach(route, i, link) {
246
247           TRACE_surf_update_action_state_net_resource (link->generic_resource.name,
248             action->generic_action.data, (action->generic_action.remains-remain)/delta, now-delta, delta);
249         }
250       }
251 #endif
252
253       DEBUG1("Remain value returned by GTNetS : %f", remain);
254       //need to trust this remain value
255       if (remain == 0) {
256         action->generic_action.remains = 0;
257       } else {
258         action->generic_action.remains = action->generic_action.cost - remain;
259       }
260       DEBUG2("Action (%p) remains new value: %f", action,
261              action->generic_action.remains);
262     }
263
264     for (i = 0; i < num_flows; i++) {
265       action = (surf_action_network_GTNETS_t) (metadata[i]);
266
267       action->generic_action.finish = now + time_to_next_flow_completion;
268 #ifdef HAVE_TRACING
269       TRACE_surf_gtnets_destroy (action);
270 #endif
271       action_state_set((surf_action_t) action, SURF_ACTION_DONE);
272       DEBUG1("----> Action (%p) just terminated", action);
273     }
274
275
276   } else {                      /* run for a given number of seconds */
277     if (gtnets_run(delta)) {
278       xbt_assert0(0, "Cannot run GTNetS simulation");
279     }
280   }
281
282   return;
283 }
284
285 static void update_resource_state(void *id,
286                                   tmgr_trace_event_t event_type,
287                                   double value, double date)
288 {
289   xbt_assert0(0, "Cannot update model state for GTNetS simulation");
290 }
291
292 /* Max durations are not supported */
293 static surf_action_t communicate(const char *src_name, const char *dst_name,
294                                  int src, int dst, double size, double rate)
295 {
296   surf_action_network_GTNETS_t action = NULL;
297
298   xbt_assert0((src >= 0 && dst >= 0), "Either src or dst have invalid id (id<0)");
299
300   DEBUG4("Setting flow src %d \"%s\", dst %d \"%s\"", src, src_name, dst, dst_name);
301
302   xbt_dynar_t links = used_routing->get_route(src, dst);
303   route_new(src, dst, links, xbt_dynar_length(links));
304
305   action =  surf_action_new(sizeof(s_surf_action_network_GTNETS_t), size, surf_network_model, 0);
306
307   /* Add a flow to the GTNets Simulation, associated to this action */
308   if (gtnets_create_flow(src, dst, size, (void *) action) < 0) {
309     xbt_assert2(0, "Not route between host %s and host %s", src_name,
310                 dst_name);
311   }
312 #ifdef HAVE_TRACING
313   TRACE_surf_gtnets_communicate (action, src, dst);
314 #endif
315
316   return (surf_action_t) action;
317 }
318
319 /* Suspend a flow() */
320 static void action_suspend(surf_action_t action)
321 {
322   THROW_UNIMPLEMENTED;
323 }
324
325 /* Resume a flow() */
326 static void action_resume(surf_action_t action)
327 {
328   THROW_UNIMPLEMENTED;
329 }
330
331 /* Test whether a flow is suspended */
332 static int action_is_suspended(surf_action_t action)
333 {
334   return 0;
335 }
336
337 static void finalize(void)
338 {
339   xbt_dict_free(&surf_network_model->resource_set);
340
341   surf_model_exit(surf_network_model);
342   surf_network_model = NULL;
343
344   gtnets_finalize();
345 }
346
347 static void surf_network_model_init_internal(void)
348 {
349   surf_network_model = surf_model_init();
350
351   surf_network_model->name = "network GTNetS";
352   surf_network_model->action_unref = action_unref;
353   surf_network_model->action_cancel = action_cancel;
354   surf_network_model->action_recycle = action_recycle;
355   surf_network_model->action_state_set = action_state_set;
356   surf_network_model->get_remains = action_get_remains;
357
358   surf_network_model->model_private->resource_used = resource_used;
359   surf_network_model->model_private->share_resources = share_resources;
360   surf_network_model->model_private->update_actions_state =
361     update_actions_state;
362   surf_network_model->model_private->update_resource_state =
363     update_resource_state;
364   surf_network_model->model_private->finalize = finalize;
365
366   surf_network_model->suspend = action_suspend;
367   surf_network_model->resume = action_resume;
368   surf_network_model->is_suspended = action_is_suspended;
369
370   surf_network_model->extension.network.communicate = communicate;
371
372   /* Added the initialization for GTNetS interface */
373   if (gtnets_initialize()) {
374     xbt_assert0(0, "Impossible to initialize GTNetS interface");
375   }
376
377   routing_model_create(sizeof(network_link_GTNETS_t), NULL);
378 }
379
380 #ifdef HAVE_GTNETS
381 void surf_network_model_init_GTNETS(const char *filename)
382 {
383   if (surf_network_model)
384     return;
385   surf_network_model_init_internal();
386   define_callbacks(filename);
387   xbt_dynar_push(model_list, &surf_network_model);
388
389   if(sg_gtnets_jitter > 0.0){
390           gtnets_set_jitter(sg_gtnets_jitter);
391           gtnets_set_jitter_seed(sg_gtnets_jitter_seed);
392   }
393
394   update_model_description(surf_network_model_description,
395                            "GTNets", surf_network_model);
396 }
397 #endif