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Generate automatically the simcall_HANDLER_* prototypes
[simgrid.git] / src / simix / smx_host.c
1 /* Copyright (c) 2007-2014. The SimGrid Team.
2  * All rights reserved.                                                     */
3
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. */
6
7 #include "smx_private.h"
8 #include "xbt/sysdep.h"
9 #include "xbt/log.h"
10 #include "xbt/dict.h"
11 #include "mc/mc.h"
12
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix,
14                                 "Logging specific to SIMIX (hosts)");
15
16 static void SIMIX_execution_finish(smx_action_t action);
17
18 /**
19  * \brief Internal function to create a SIMIX host.
20  * \param name name of the host to create
21  * \param workstation the SURF workstation to encapsulate
22  * \param data some user data (may be NULL)
23  */
24 smx_host_t SIMIX_host_create(const char *name,
25                                void *workstation, void *data)
26 {
27   smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
28   s_smx_process_t proc;
29
30   /* Host structure */
31   smx_host->process_list =
32       xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
33
34   /* Update global variables */
35   xbt_lib_set(host_lib,name,SIMIX_HOST_LEVEL,smx_host);
36
37   return xbt_lib_get_elm_or_null(host_lib, name);
38 }
39
40 void simcall_HANDLER_host_on(smx_simcall_t simcall, smx_host_t h)
41 {
42   SIMIX_host_on(h);
43 }
44
45 /**
46  * \brief Start the host if it is off
47  *
48  */
49 void SIMIX_host_on(smx_host_t h)
50 {
51   smx_host_priv_t host = SIMIX_host_priv(h);
52
53   xbt_assert((host != NULL), "Invalid parameters");
54
55   if (surf_resource_get_state(surf_workstation_resource_priv(h))==SURF_RESOURCE_OFF) {
56     surf_resource_set_state(surf_workstation_resource_priv(h), SURF_RESOURCE_ON);
57
58     unsigned int cpt;
59     smx_process_arg_t arg;
60     xbt_dynar_foreach(host->boot_processes,cpt,arg) {
61       smx_process_t process;
62
63       char** argv = xbt_new(char*, arg->argc);
64       for (int i=0; i<arg->argc; i++)
65         argv[i] = xbt_strdup(arg->argv[i]);
66
67       XBT_DEBUG("Booting Process %s(%s) right now", arg->argv[0], arg->hostname);
68       if (simix_global->create_process_function) {
69         simix_global->create_process_function(&process,
70                                               argv[0],
71                                               arg->code,
72                                               NULL,
73                                               arg->hostname,
74                                               arg->kill_time,
75                                               arg->argc,
76                                               argv,
77                                               arg->properties,
78                                               arg->auto_restart,
79                                               NULL);
80       } else {
81         simcall_process_create(&process,
82                                arg->argv[0],
83                                arg->code,
84                                NULL,
85                                arg->hostname,
86                                arg->kill_time,
87                                arg->argc,
88                                argv,
89                                arg->properties,
90                                arg->auto_restart);
91       }
92     }
93   }
94 }
95
96 void simcall_HANDLER_host_off(smx_simcall_t simcall, smx_host_t h)
97 {
98   SIMIX_host_off(h, simcall->issuer);
99 }
100
101 /**
102  * \brief Stop the host if it is on
103  *
104  */
105 void SIMIX_host_off(smx_host_t h, smx_process_t issuer)
106 {
107   smx_host_priv_t host = SIMIX_host_priv(h);
108
109   xbt_assert((host != NULL), "Invalid parameters");
110
111   if (surf_resource_get_state(surf_workstation_resource_priv(h))==SURF_RESOURCE_ON) {
112         surf_resource_set_state(surf_workstation_resource_priv(h), SURF_RESOURCE_OFF);
113
114     /* Clean Simulator data */
115     if (xbt_swag_size(host->process_list) != 0) {
116       smx_process_t process = NULL;
117       xbt_swag_foreach(process, host->process_list) {
118         SIMIX_process_kill(process, issuer);
119         XBT_DEBUG("Killing %s on %s by %s", process->name,  sg_host_name(process->smx_host), issuer->name);
120       }
121     }
122   }
123   /*xbt_dynar_t vms = surf_workstation_get_vms(h);
124   unsigned int cpt;
125   smx_host_t vm;
126   xbt_dynar_foreach(vms, cpt, vm) {
127     SIMIX_vm_shutdown(vm, issuer);
128     SIMIX_vm_destroy(vm);
129   }
130   xbt_dynar_free(&vms);*/
131 }
132
133 /**
134  * \brief Internal function to destroy a SIMIX host.
135  *
136  * \param h the host to destroy (a smx_host_t)
137  */
138 void SIMIX_host_destroy(void *h)
139 {
140   smx_host_priv_t host = (smx_host_priv_t) h;
141
142   xbt_assert((host != NULL), "Invalid parameters");
143
144   /* Clean Simulator data */
145   if (xbt_swag_size(host->process_list) != 0) {
146     char *msg = xbt_strdup("Shutting down host, but it's not empty:");
147     char *tmp;
148     smx_process_t process = NULL;
149
150     xbt_swag_foreach(process, host->process_list) {
151       tmp = bprintf("%s\n\t%s", msg, process->name);
152       free(msg);
153       msg = tmp;
154     }
155     SIMIX_display_process_status();
156     THROWF(arg_error, 0, "%s", msg);
157   }
158   xbt_dynar_free(&host->auto_restart_processes);
159   xbt_dynar_free(&host->boot_processes);
160   xbt_swag_free(host->process_list);
161
162   /* Clean host structure */
163   free(host);
164   return;
165 }
166
167 smx_host_t simcall_HANDLER_host_get_by_name(smx_simcall_t simcall, const char *name){
168    return SIMIX_host_get_by_name(name);
169 }
170 smx_host_t SIMIX_host_get_by_name(const char *name){
171   xbt_assert(((simix_global != NULL)
172                && (host_lib != NULL)),
173               "Environment not set yet");
174
175   return xbt_lib_get_elm_or_null(host_lib, name);
176 }
177
178 smx_host_t SIMIX_host_self(void)
179 {
180   smx_process_t process = SIMIX_process_self();
181   return (process == NULL) ? NULL : SIMIX_process_get_host(process);
182 }
183
184 /* needs to be public and without simcall because it is called
185    by exceptions and logging events */
186 const char* SIMIX_host_self_get_name(void)
187 {
188   smx_host_t host = SIMIX_host_self();
189   if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
190     return "";
191
192   return SIMIX_host_get_name(host);
193 }
194
195 const char* simcall_HANDLER_host_get_name(smx_simcall_t simcall, smx_host_t host){
196    return SIMIX_host_get_name(host);
197 }
198 const char* SIMIX_host_get_name(smx_host_t host){
199   xbt_assert((host != NULL), "Invalid parameters");
200
201   return sg_host_name(host);
202 }
203
204 xbt_dict_t simcall_HANDLER_host_get_properties(smx_simcall_t simcall, smx_host_t host){
205   return SIMIX_host_get_properties(host);
206 }
207 xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
208   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
209
210   return surf_resource_get_properties(surf_workstation_resource_priv(host));
211 }
212
213 double simcall_HANDLER_host_get_speed(smx_simcall_t simcall, smx_host_t host){
214   return SIMIX_host_get_speed(host);
215 }
216 double SIMIX_host_get_speed(smx_host_t host){
217   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
218   return surf_workstation_get_speed(host, 1.0);
219 }
220
221 int simcall_HANDLER_host_get_core(smx_simcall_t simcall, smx_host_t host){
222   return SIMIX_host_get_core(host);
223 }
224 int SIMIX_host_get_core(smx_host_t host){
225   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
226
227   return surf_workstation_get_core(host);
228 }
229
230 xbt_swag_t simcall_HANDLER_host_get_process_list(smx_simcall_t simcall, smx_host_t host){
231   return SIMIX_host_get_process_list(host);
232 }
233
234 xbt_swag_t SIMIX_host_get_process_list(smx_host_t host){
235   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
236   smx_host_priv_t host_priv = SIMIX_host_priv(host);
237
238   return host_priv->process_list;
239 }
240
241
242 double simcall_HANDLER_host_get_available_speed(smx_simcall_t simcall, smx_host_t host){
243   return SIMIX_host_get_available_speed(host);
244 }
245 double SIMIX_host_get_available_speed(smx_host_t host){
246   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
247
248   return surf_workstation_get_available_speed(host);
249 }
250
251 double simcall_HANDLER_host_get_current_power_peak(smx_simcall_t simcall, smx_host_t host){
252   return SIMIX_host_get_current_power_peak(host);
253 }
254 double SIMIX_host_get_current_power_peak(smx_host_t host) {
255           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
256           return surf_workstation_get_current_power_peak(host);
257 }
258
259 double simcall_HANDLER_host_get_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
260   return SIMIX_host_get_power_peak_at(host, pstate_index);
261 }
262 double SIMIX_host_get_power_peak_at(smx_host_t host, int pstate_index) {
263           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
264
265           return surf_workstation_get_power_peak_at(host, pstate_index);
266 }
267
268 int simcall_HANDLER_host_get_nb_pstates(smx_simcall_t simcall, smx_host_t host){
269   return SIMIX_host_get_nb_pstates(host);
270 }
271 int SIMIX_host_get_nb_pstates(smx_host_t host) {
272           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
273
274           return surf_workstation_get_nb_pstates(host);
275 }
276
277
278 void simcall_HANDLER_host_set_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
279   SIMIX_host_set_power_peak_at(host, pstate_index);
280 }
281 void SIMIX_host_set_power_peak_at(smx_host_t host, int pstate_index) {
282           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
283
284           surf_workstation_set_power_peak_at(host, pstate_index);
285 }
286
287 double simcall_HANDLER_host_get_consumed_energy(smx_simcall_t simcall, smx_host_t host){
288   return SIMIX_host_get_consumed_energy(host);
289 }
290 double SIMIX_host_get_consumed_energy(smx_host_t host) {
291           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
292           return surf_workstation_get_consumed_energy(host);
293 }
294
295 int simcall_HANDLER_host_get_state(smx_simcall_t simcall, smx_host_t host){
296   return SIMIX_host_get_state(host);
297 }
298 int SIMIX_host_get_state(smx_host_t host){
299   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
300
301   return surf_resource_get_state(surf_workstation_resource_priv(host));
302 }
303
304 void _SIMIX_host_free_process_arg(void *data)
305 {
306   smx_process_arg_t arg = *(void**)data;
307   int i;
308   for (i = 0; i < arg->argc; i++)
309     xbt_free(arg->argv[i]);
310   xbt_free(arg->argv);
311   xbt_free(arg->name);
312   xbt_free(arg);
313 }
314 /**
315  * \brief Add a process to the list of the processes that the host will restart when it comes back
316  * This function add a process to the list of the processes that will be restarted when the host comes
317  * back. It is expected that this function is called when the host is down.
318  * The processes will only be restarted once, meaning that you will have to register the process
319  * again to restart the process again.
320  */
321 void SIMIX_host_add_auto_restart_process(smx_host_t host,
322                                          const char *name,
323                                          xbt_main_func_t code,
324                                          void *data,
325                                          const char *hostname,
326                                          double kill_time,
327                                          int argc, char **argv,
328                                          xbt_dict_t properties,
329                                          int auto_restart)
330 {
331   if (!SIMIX_host_priv(host)->auto_restart_processes) {
332     SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
333   }
334   smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
335   arg->name = xbt_strdup(name);
336   arg->code = code;
337   arg->data = data;
338   arg->hostname = hostname;
339   arg->kill_time = kill_time;
340   arg->argc = argc;
341
342   arg->argv = xbt_new(char*,argc + 1);
343
344   int i;
345   for (i = 0; i < argc; i++) {
346     arg->argv[i] = xbt_strdup(argv[i]);
347   }
348   arg->argv[argc] = NULL;
349
350   arg->properties = properties;
351   arg->auto_restart = auto_restart;
352
353   if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
354       && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
355     xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
356     XBT_DEBUG("Have pushed host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
357   }
358   xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
359 }
360 /**
361  * \brief Restart the list of processes that have been registered to the host
362  */
363 void SIMIX_host_restart_processes(smx_host_t host)
364 {
365   unsigned int cpt;
366   smx_process_arg_t arg;
367   xbt_dynar_t process_list = SIMIX_host_priv(host)->auto_restart_processes;
368   if (!process_list)
369     return;
370
371   xbt_dynar_foreach (process_list, cpt, arg) {
372
373     smx_process_t process;
374
375     XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
376     if (simix_global->create_process_function) {
377       simix_global->create_process_function(&process,
378                                             arg->argv[0],
379                                             arg->code,
380                                             NULL,
381                                             arg->hostname,
382                                             arg->kill_time,
383                                             arg->argc,
384                                             arg->argv,
385                                             arg->properties,
386                                             arg->auto_restart,
387                                             NULL);
388     } else {
389       simcall_process_create(&process,
390                              arg->argv[0],
391                              arg->code,
392                              NULL,
393                              arg->hostname,
394                              arg->kill_time,
395                              arg->argc,
396                              arg->argv,
397                              arg->properties,
398                              arg->auto_restart);
399
400     }
401     /* arg->argv is used by the process created above.  Hide it to
402      * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
403      * below. */
404     arg->argc = 0;
405     arg->argv = NULL;
406   }
407   xbt_dynar_reset(process_list);
408 }
409
410 void SIMIX_host_autorestart(smx_host_t host)
411 {
412   if(simix_global->autorestart)
413     simix_global->autorestart(host);
414   else
415     xbt_die("No function for simix_global->autorestart");
416 }
417
418 smx_action_t simcall_HANDLER_host_execute(smx_simcall_t simcall,const char *name,
419     smx_host_t host, double computation_amount, double priority, double bound, unsigned long affinity_mask){
420   return SIMIX_host_execute(name, host, computation_amount, priority, bound, affinity_mask);
421 }
422 smx_action_t SIMIX_host_execute(const char *name,
423     smx_host_t host, double computation_amount, double priority, double bound, unsigned long affinity_mask){
424
425   /* alloc structures and initialize */
426   smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
427   action->type = SIMIX_ACTION_EXECUTE;
428   action->name = xbt_strdup(name);
429   action->state = SIMIX_RUNNING;
430   action->execution.host = host;
431
432 #ifdef HAVE_TRACING
433   action->category = NULL;
434 #endif
435
436   /* set surf's action */
437   if (!MC_is_active()) {
438
439     action->execution.surf_exec = surf_workstation_execute(host, computation_amount);
440     surf_action_set_data(action->execution.surf_exec, action);
441     surf_action_set_priority(action->execution.surf_exec, priority);
442
443     /* Note (hypervisor): for multicore, the bound value being passed to the
444      * surf layer should not be zero (i.e., unlimited). It should be the
445      * capacity of a CPU core. */
446     if (bound == 0)
447       surf_cpu_action_set_bound(action->execution.surf_exec, SIMIX_host_get_speed(host));
448     else
449       surf_cpu_action_set_bound(action->execution.surf_exec, bound);
450
451     if (affinity_mask != 0) {
452       /* just a double check to confirm that this host is the host where this task is running. */
453       xbt_assert(action->execution.host == host);
454       surf_cpu_action_set_affinity(action->execution.surf_exec, host, affinity_mask);
455     }
456   }
457
458   XBT_DEBUG("Create execute action %p: %s", action, action->name);
459
460   return action;
461 }
462
463 smx_action_t simcall_HANDLER_host_parallel_execute(smx_simcall_t simcall, const char *name,
464     int host_nb, smx_host_t *host_list,
465     double *computation_amount, double *communication_amount,
466     double amount, double rate){
467   return SIMIX_host_parallel_execute(name, host_nb, host_list, computation_amount,
468                                      communication_amount, amount, rate);
469 }
470 smx_action_t SIMIX_host_parallel_execute(const char *name,
471     int host_nb, smx_host_t *host_list,
472     double *computation_amount, double *communication_amount,
473     double amount, double rate){
474
475   void **workstation_list = NULL;
476   int i;
477
478   /* alloc structures and initialize */
479   smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
480   action->type = SIMIX_ACTION_PARALLEL_EXECUTE;
481   action->name = xbt_strdup(name);
482   action->state = SIMIX_RUNNING;
483   action->execution.host = NULL; /* FIXME: do we need the list of hosts? */
484
485 #ifdef HAVE_TRACING
486   action->category = NULL;
487 #endif
488
489   /* set surf's action */
490   workstation_list = xbt_new0(void *, host_nb);
491   for (i = 0; i < host_nb; i++)
492     workstation_list[i] = surf_workstation_resource_priv(host_list[i]);
493
494
495   /* FIXME: what happens if host_list contains VMs and PMs. If
496    * execute_parallel_task() does not change the state of the model, we can mix
497    * them. */
498   surf_model_t ws_model = surf_resource_model(host_list[0], SURF_WKS_LEVEL);
499   for (i = 1; i < host_nb; i++) {
500     surf_model_t ws_model_tmp = surf_resource_model(host_list[i], SURF_WKS_LEVEL);
501     if (ws_model_tmp != ws_model) {
502       XBT_CRITICAL("mixing VMs and PMs is not supported");
503       DIE_IMPOSSIBLE;
504     }
505   }
506
507   /* set surf's action */
508   if (!MC_is_active()) {
509     action->execution.surf_exec =
510       surf_workstation_model_execute_parallel_task((surf_workstation_model_t)surf_workstation_model,
511                   host_nb, workstation_list, computation_amount, communication_amount, rate);
512
513     surf_action_set_data(action->execution.surf_exec, action);
514   }
515   XBT_DEBUG("Create parallel execute action %p", action);
516
517   return action;
518 }
519
520 void simcall_HANDLER_host_execution_destroy(smx_simcall_t simcall, smx_action_t action){
521   SIMIX_host_execution_destroy(action);
522 }
523 void SIMIX_host_execution_destroy(smx_action_t action){
524   XBT_DEBUG("Destroy action %p", action);
525
526   if (action->execution.surf_exec) {
527     surf_action_unref(action->execution.surf_exec);
528     action->execution.surf_exec = NULL;
529   }
530   xbt_free(action->name);
531   xbt_mallocator_release(simix_global->action_mallocator, action);
532 }
533
534 void simcall_HANDLER_host_execution_cancel(smx_simcall_t simcall, smx_action_t action){
535   SIMIX_host_execution_cancel(action);
536 }
537 void SIMIX_host_execution_cancel(smx_action_t action){
538   XBT_DEBUG("Cancel action %p", action);
539
540   if (action->execution.surf_exec)
541     surf_action_cancel(action->execution.surf_exec);
542 }
543
544 double simcall_HANDLER_host_execution_get_remains(smx_simcall_t simcall, smx_action_t action){
545   return SIMIX_host_execution_get_remains(action);
546 }
547 double SIMIX_host_execution_get_remains(smx_action_t action){
548   double result = 0.0;
549
550   if (action->state == SIMIX_RUNNING)
551     result = surf_action_get_remains(action->execution.surf_exec);
552
553   return result;
554 }
555
556 e_smx_state_t simcall_HANDLER_host_execution_get_state(smx_simcall_t simcall, smx_action_t action){
557   return SIMIX_host_execution_get_state(action);
558 }
559 e_smx_state_t SIMIX_host_execution_get_state(smx_action_t action){
560   return action->state;
561 }
562
563 void simcall_HANDLER_host_execution_set_priority(smx_simcall_t simcall, smx_action_t action,
564                                         double priority){
565   SIMIX_host_execution_set_priority(action, priority);
566 }
567 void SIMIX_host_execution_set_priority(smx_action_t action, double priority){
568
569   if(action->execution.surf_exec)
570         surf_action_set_priority(action->execution.surf_exec, priority);
571 }
572
573 void simcall_HANDLER_host_execution_set_bound(smx_simcall_t simcall, smx_action_t action,
574                                         double bound){
575   SIMIX_host_execution_set_bound(action, bound);
576 }
577 void SIMIX_host_execution_set_bound(smx_action_t action, double bound){
578
579   if(action->execution.surf_exec)
580         surf_cpu_action_set_bound(action->execution.surf_exec, bound);
581 }
582
583 void simcall_HANDLER_host_execution_set_affinity(smx_simcall_t simcall,
584     smx_action_t action, smx_host_t host, unsigned long mask){
585   SIMIX_host_execution_set_affinity(action, host, mask);
586 }
587 void SIMIX_host_execution_set_affinity(smx_action_t action, smx_host_t host, unsigned long mask){
588   xbt_assert(action->type == SIMIX_ACTION_EXECUTE);
589
590   if (action->execution.surf_exec) {
591     /* just a double check to confirm that this host is the host where this task is running. */
592     xbt_assert(action->execution.host == host);
593     surf_cpu_action_set_affinity(action->execution.surf_exec, host, mask);
594   }
595 }
596
597 void simcall_HANDLER_host_execution_wait(smx_simcall_t simcall, smx_action_t action){
598
599   XBT_DEBUG("Wait for execution of action %p, state %d", action, (int)action->state);
600
601   /* Associate this simcall to the action */
602   xbt_fifo_push(action->simcalls, simcall);
603   simcall->issuer->waiting_action = action;
604
605   /* set surf's action */
606   if (MC_is_active()) {
607     action->state = SIMIX_DONE;
608     SIMIX_execution_finish(action);
609     return;
610   }
611
612   /* If the action is already finished then perform the error handling */
613   if (action->state != SIMIX_RUNNING)
614     SIMIX_execution_finish(action);
615 }
616
617 void SIMIX_host_execution_suspend(smx_action_t action)
618 {
619   if(action->execution.surf_exec)
620     surf_action_suspend(action->execution.surf_exec);
621 }
622
623 void SIMIX_host_execution_resume(smx_action_t action)
624 {
625   if(action->execution.surf_exec)
626     surf_action_resume(action->execution.surf_exec);
627 }
628
629 void SIMIX_execution_finish(smx_action_t action)
630 {
631   xbt_fifo_item_t item;
632   smx_simcall_t simcall;
633
634   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
635
636     switch (action->state) {
637
638       case SIMIX_DONE:
639         /* do nothing, action done */
640   XBT_DEBUG("SIMIX_execution_finished: execution successful");
641         break;
642
643       case SIMIX_FAILED:
644         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
645         simcall->issuer->context->iwannadie = 1;
646         SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
647         break;
648
649       case SIMIX_CANCELED:
650         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
651         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
652         break;
653
654       default:
655         xbt_die("Internal error in SIMIX_execution_finish: unexpected action state %d",
656             (int)action->state);
657     }
658     /* check if the host is down */
659     if (surf_resource_get_state(surf_workstation_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
660       simcall->issuer->context->iwannadie = 1;
661     }
662
663     simcall->issuer->waiting_action =    NULL;
664     simcall_host_execution_wait__set__result(simcall, action->state);
665     SIMIX_simcall_answer(simcall);
666   }
667
668   /* We no longer need it */
669   SIMIX_host_execution_destroy(action);
670 }
671
672
673 void SIMIX_post_host_execute(smx_action_t action)
674 {
675   if (action->type == SIMIX_ACTION_EXECUTE && /* FIMXE: handle resource failure
676                                                * for parallel tasks too */
677       surf_resource_get_state(surf_workstation_resource_priv(action->execution.host)) == SURF_RESOURCE_OFF) {
678     /* If the host running the action failed, notice it so that the asking
679      * process can be killed if it runs on that host itself */
680     action->state = SIMIX_FAILED;
681   } else if (surf_action_get_state(action->execution.surf_exec) == SURF_ACTION_FAILED) {
682     /* If the host running the action didn't fail, then the action was
683      * canceled */
684     action->state = SIMIX_CANCELED;
685   } else {
686     action->state = SIMIX_DONE;
687   }
688
689   if (action->execution.surf_exec) {
690     surf_action_unref(action->execution.surf_exec);
691     action->execution.surf_exec = NULL;
692   }
693
694   /* If there are simcalls associated with the action, then answer them */
695   if (xbt_fifo_size(action->simcalls)) {
696     SIMIX_execution_finish(action);
697   }
698 }
699
700
701 #ifdef HAVE_TRACING
702 void simcall_HANDLER_set_category(smx_simcall_t simcall, smx_action_t action,
703                             const char *category){
704   SIMIX_set_category(action, category);
705 }
706 void SIMIX_set_category(smx_action_t action, const char *category)
707 {
708   if (action->state != SIMIX_RUNNING) return;
709   if (action->type == SIMIX_ACTION_EXECUTE){
710     surf_action_set_category(action->execution.surf_exec, category);
711   }else if (action->type == SIMIX_ACTION_COMMUNICATE){
712     surf_action_set_category(action->comm.surf_comm, category);
713   }
714 }
715 #endif
716
717 /**
718  * \brief Function to get the parameters of the given the SIMIX host.
719  *
720  * \param host the host to get_phys_host (a smx_host_t)
721  * \param param the parameter object space to be overwritten (a ws_params_t)
722  */
723 void SIMIX_host_get_params(smx_host_t ind_vm, ws_params_t params)
724 {
725   /* jump to ws_get_params(). */
726   surf_workstation_get_params(ind_vm, params);
727 }
728
729 void simcall_HANDLER_host_get_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
730 {
731   SIMIX_host_get_params(ind_vm, params);
732 }
733
734 void SIMIX_host_set_params(smx_host_t ind_vm, ws_params_t params)
735 {
736   /* jump to ws_set_params(). */
737   surf_workstation_set_params(ind_vm, params);
738 }
739
740 void simcall_HANDLER_host_set_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
741 {
742   SIMIX_host_set_params(ind_vm, params);
743 }
744
745 xbt_dict_t simcall_HANDLER_host_get_mounted_storage_list(smx_simcall_t simcall, smx_host_t host){
746   return SIMIX_host_get_mounted_storage_list(host);
747 }
748
749 xbt_dict_t SIMIX_host_get_mounted_storage_list(smx_host_t host){
750   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
751
752   return surf_workstation_get_mounted_storage_list(host);
753 }
754
755 xbt_dynar_t simcall_HANDLER_host_get_attached_storage_list(smx_simcall_t simcall, smx_host_t host){
756   return SIMIX_host_get_attached_storage_list(host);
757 }
758
759 xbt_dynar_t SIMIX_host_get_attached_storage_list(smx_host_t host){
760   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
761
762   return surf_workstation_get_attached_storage_list(host);
763 }