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[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 const char* simcall_HANDLER_host_self_get_name(smx_simcall_t simcall){
185    return SIMIX_host_self_get_name();
186 }
187 /* needs to be public and without simcall because it is called
188    by exceptions and logging events */
189 const char* SIMIX_host_self_get_name(void)
190 {
191   smx_host_t host = SIMIX_host_self();
192   if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
193     return "";
194
195   return SIMIX_host_get_name(host);
196 }
197
198 const char* simcall_HANDLER_host_get_name(smx_simcall_t simcall, smx_host_t host){
199    return SIMIX_host_get_name(host);
200 }
201 const char* SIMIX_host_get_name(smx_host_t host){
202   xbt_assert((host != NULL), "Invalid parameters");
203
204   return sg_host_name(host);
205 }
206
207 xbt_dict_t simcall_HANDLER_host_get_properties(smx_simcall_t simcall, smx_host_t host){
208   return SIMIX_host_get_properties(host);
209 }
210 xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
211   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
212
213   return surf_resource_get_properties(surf_workstation_resource_priv(host));
214 }
215
216 double simcall_HANDLER_host_get_speed(smx_simcall_t simcall, smx_host_t host){
217   return SIMIX_host_get_speed(host);
218 }
219 double SIMIX_host_get_speed(smx_host_t host){
220   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
221   return surf_workstation_get_speed(host, 1.0);
222 }
223
224 int simcall_HANDLER_host_get_core(smx_simcall_t simcall, smx_host_t host){
225   return SIMIX_host_get_core(host);
226 }
227 int SIMIX_host_get_core(smx_host_t host){
228   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
229
230   return surf_workstation_get_core(host);
231 }
232
233 xbt_swag_t simcall_HANDLER_host_get_process_list(smx_simcall_t simcall, smx_host_t host){
234   return SIMIX_host_get_process_list(host);
235 }
236
237 xbt_swag_t SIMIX_host_get_process_list(smx_host_t host){
238   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
239   smx_host_priv_t host_priv = SIMIX_host_priv(host);
240
241   return host_priv->process_list;
242 }
243
244
245 double simcall_HANDLER_host_get_available_speed(smx_simcall_t simcall, smx_host_t host){
246   return SIMIX_host_get_available_speed(host);
247 }
248 double SIMIX_host_get_available_speed(smx_host_t host){
249   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
250
251   return surf_workstation_get_available_speed(host);
252 }
253
254 double simcall_HANDLER_host_get_current_power_peak(smx_simcall_t simcall, smx_host_t host){
255   return SIMIX_host_get_current_power_peak(host);
256 }
257 double SIMIX_host_get_current_power_peak(smx_host_t host) {
258           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
259           return surf_workstation_get_current_power_peak(host);
260 }
261
262 double simcall_HANDLER_host_get_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
263   return SIMIX_host_get_power_peak_at(host, pstate_index);
264 }
265 double SIMIX_host_get_power_peak_at(smx_host_t host, int pstate_index) {
266           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
267
268           return surf_workstation_get_power_peak_at(host, pstate_index);
269 }
270
271 int simcall_HANDLER_host_get_nb_pstates(smx_simcall_t simcall, smx_host_t host){
272   return SIMIX_host_get_nb_pstates(host);
273 }
274 int SIMIX_host_get_nb_pstates(smx_host_t host) {
275           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
276
277           return surf_workstation_get_nb_pstates(host);
278 }
279
280
281 void simcall_HANDLER_host_set_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
282   SIMIX_host_set_power_peak_at(host, pstate_index);
283 }
284 void SIMIX_host_set_power_peak_at(smx_host_t host, int pstate_index) {
285           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
286
287           surf_workstation_set_power_peak_at(host, pstate_index);
288 }
289
290 double simcall_HANDLER_host_get_consumed_energy(smx_simcall_t simcall, smx_host_t host){
291   return SIMIX_host_get_consumed_energy(host);
292 }
293 double SIMIX_host_get_consumed_energy(smx_host_t host) {
294           xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
295           return surf_workstation_get_consumed_energy(host);
296 }
297
298 int simcall_HANDLER_host_get_state(smx_simcall_t simcall, smx_host_t host){
299   return SIMIX_host_get_state(host);
300 }
301 int SIMIX_host_get_state(smx_host_t host){
302   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
303
304   return surf_resource_get_state(surf_workstation_resource_priv(host));
305 }
306
307 void _SIMIX_host_free_process_arg(void *data)
308 {
309   smx_process_arg_t arg = *(void**)data;
310   int i;
311   for (i = 0; i < arg->argc; i++)
312     xbt_free(arg->argv[i]);
313   xbt_free(arg->argv);
314   xbt_free(arg->name);
315   xbt_free(arg);
316 }
317 /**
318  * \brief Add a process to the list of the processes that the host will restart when it comes back
319  * This function add a process to the list of the processes that will be restarted when the host comes
320  * back. It is expected that this function is called when the host is down.
321  * The processes will only be restarted once, meaning that you will have to register the process
322  * again to restart the process again.
323  */
324 void SIMIX_host_add_auto_restart_process(smx_host_t host,
325                                          const char *name,
326                                          xbt_main_func_t code,
327                                          void *data,
328                                          const char *hostname,
329                                          double kill_time,
330                                          int argc, char **argv,
331                                          xbt_dict_t properties,
332                                          int auto_restart)
333 {
334   if (!SIMIX_host_priv(host)->auto_restart_processes) {
335     SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
336   }
337   smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
338   arg->name = xbt_strdup(name);
339   arg->code = code;
340   arg->data = data;
341   arg->hostname = hostname;
342   arg->kill_time = kill_time;
343   arg->argc = argc;
344
345   arg->argv = xbt_new(char*,argc + 1);
346
347   int i;
348   for (i = 0; i < argc; i++) {
349     arg->argv[i] = xbt_strdup(argv[i]);
350   }
351   arg->argv[argc] = NULL;
352
353   arg->properties = properties;
354   arg->auto_restart = auto_restart;
355
356   if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
357       && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
358     xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
359     XBT_DEBUG("Have pushed host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
360   }
361   xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
362 }
363 /**
364  * \brief Restart the list of processes that have been registered to the host
365  */
366 void SIMIX_host_restart_processes(smx_host_t host)
367 {
368   unsigned int cpt;
369   smx_process_arg_t arg;
370   xbt_dynar_t process_list = SIMIX_host_priv(host)->auto_restart_processes;
371   if (!process_list)
372     return;
373
374   xbt_dynar_foreach (process_list, cpt, arg) {
375
376     smx_process_t process;
377
378     XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
379     if (simix_global->create_process_function) {
380       simix_global->create_process_function(&process,
381                                             arg->argv[0],
382                                             arg->code,
383                                             NULL,
384                                             arg->hostname,
385                                             arg->kill_time,
386                                             arg->argc,
387                                             arg->argv,
388                                             arg->properties,
389                                             arg->auto_restart,
390                                             NULL);
391     } else {
392       simcall_process_create(&process,
393                              arg->argv[0],
394                              arg->code,
395                              NULL,
396                              arg->hostname,
397                              arg->kill_time,
398                              arg->argc,
399                              arg->argv,
400                              arg->properties,
401                              arg->auto_restart);
402
403     }
404     /* arg->argv is used by the process created above.  Hide it to
405      * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
406      * below. */
407     arg->argc = 0;
408     arg->argv = NULL;
409   }
410   xbt_dynar_reset(process_list);
411 }
412
413 void SIMIX_host_autorestart(smx_host_t host)
414 {
415   if(simix_global->autorestart)
416     simix_global->autorestart(host);
417   else
418     xbt_die("No function for simix_global->autorestart");
419 }
420
421 smx_action_t simcall_HANDLER_host_execute(smx_simcall_t simcall,const char *name,
422     smx_host_t host, double computation_amount, double priority, double bound, unsigned long affinity_mask){
423   return SIMIX_host_execute(name, host, computation_amount, priority, bound, affinity_mask);
424 }
425 smx_action_t SIMIX_host_execute(const char *name,
426     smx_host_t host, double computation_amount, double priority, double bound, unsigned long affinity_mask){
427
428   /* alloc structures and initialize */
429   smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
430   action->type = SIMIX_ACTION_EXECUTE;
431   action->name = xbt_strdup(name);
432   action->state = SIMIX_RUNNING;
433   action->execution.host = host;
434
435 #ifdef HAVE_TRACING
436   action->category = NULL;
437 #endif
438
439   /* set surf's action */
440   if (!MC_is_active()) {
441
442     action->execution.surf_exec = surf_workstation_execute(host, computation_amount);
443     surf_action_set_data(action->execution.surf_exec, action);
444     surf_action_set_priority(action->execution.surf_exec, priority);
445
446     /* Note (hypervisor): for multicore, the bound value being passed to the
447      * surf layer should not be zero (i.e., unlimited). It should be the
448      * capacity of a CPU core. */
449     if (bound == 0)
450       surf_cpu_action_set_bound(action->execution.surf_exec, SIMIX_host_get_speed(host));
451     else
452       surf_cpu_action_set_bound(action->execution.surf_exec, bound);
453
454     if (affinity_mask != 0) {
455       /* just a double check to confirm that this host is the host where this task is running. */
456       xbt_assert(action->execution.host == host);
457       surf_cpu_action_set_affinity(action->execution.surf_exec, host, affinity_mask);
458     }
459   }
460
461   XBT_DEBUG("Create execute action %p: %s", action, action->name);
462
463   return action;
464 }
465
466 smx_action_t simcall_HANDLER_host_parallel_execute(smx_simcall_t simcall, const char *name,
467     int host_nb, smx_host_t *host_list,
468     double *computation_amount, double *communication_amount,
469     double amount, double rate){
470   return SIMIX_host_parallel_execute(name, host_nb, host_list, computation_amount,
471                                      communication_amount, amount, rate);
472 }
473 smx_action_t SIMIX_host_parallel_execute(const char *name,
474     int host_nb, smx_host_t *host_list,
475     double *computation_amount, double *communication_amount,
476     double amount, double rate){
477
478   void **workstation_list = NULL;
479   int i;
480
481   /* alloc structures and initialize */
482   smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
483   action->type = SIMIX_ACTION_PARALLEL_EXECUTE;
484   action->name = xbt_strdup(name);
485   action->state = SIMIX_RUNNING;
486   action->execution.host = NULL; /* FIXME: do we need the list of hosts? */
487
488 #ifdef HAVE_TRACING
489   action->category = NULL;
490 #endif
491
492   /* set surf's action */
493   workstation_list = xbt_new0(void *, host_nb);
494   for (i = 0; i < host_nb; i++)
495     workstation_list[i] = surf_workstation_resource_priv(host_list[i]);
496
497
498   /* FIXME: what happens if host_list contains VMs and PMs. If
499    * execute_parallel_task() does not change the state of the model, we can mix
500    * them. */
501   surf_model_t ws_model = surf_resource_model(host_list[0], SURF_WKS_LEVEL);
502   for (i = 1; i < host_nb; i++) {
503     surf_model_t ws_model_tmp = surf_resource_model(host_list[i], SURF_WKS_LEVEL);
504     if (ws_model_tmp != ws_model) {
505       XBT_CRITICAL("mixing VMs and PMs is not supported");
506       DIE_IMPOSSIBLE;
507     }
508   }
509
510   /* set surf's action */
511   if (!MC_is_active()) {
512     action->execution.surf_exec =
513       surf_workstation_model_execute_parallel_task((surf_workstation_model_t)surf_workstation_model,
514                   host_nb, workstation_list, computation_amount, communication_amount, rate);
515
516     surf_action_set_data(action->execution.surf_exec, action);
517   }
518   XBT_DEBUG("Create parallel execute action %p", action);
519
520   return action;
521 }
522
523 void simcall_HANDLER_host_execution_destroy(smx_simcall_t simcall, smx_action_t action){
524   SIMIX_host_execution_destroy(action);
525 }
526 void SIMIX_host_execution_destroy(smx_action_t action){
527   XBT_DEBUG("Destroy action %p", action);
528
529   if (action->execution.surf_exec) {
530     surf_action_unref(action->execution.surf_exec);
531     action->execution.surf_exec = NULL;
532   }
533   xbt_free(action->name);
534   xbt_mallocator_release(simix_global->action_mallocator, action);
535 }
536
537 void simcall_HANDLER_host_execution_cancel(smx_simcall_t simcall, smx_action_t action){
538   SIMIX_host_execution_cancel(action);
539 }
540 void SIMIX_host_execution_cancel(smx_action_t action){
541   XBT_DEBUG("Cancel action %p", action);
542
543   if (action->execution.surf_exec)
544     surf_action_cancel(action->execution.surf_exec);
545 }
546
547 double simcall_HANDLER_host_execution_get_remains(smx_simcall_t simcall, smx_action_t action){
548   return SIMIX_host_execution_get_remains(action);
549 }
550 double SIMIX_host_execution_get_remains(smx_action_t action){
551   double result = 0.0;
552
553   if (action->state == SIMIX_RUNNING)
554     result = surf_action_get_remains(action->execution.surf_exec);
555
556   return result;
557 }
558
559 e_smx_state_t simcall_HANDLER_host_execution_get_state(smx_simcall_t simcall, smx_action_t action){
560   return SIMIX_host_execution_get_state(action);
561 }
562 e_smx_state_t SIMIX_host_execution_get_state(smx_action_t action){
563   return action->state;
564 }
565
566 void simcall_HANDLER_host_execution_set_priority(smx_simcall_t simcall, smx_action_t action,
567                                         double priority){
568   SIMIX_host_execution_set_priority(action, priority);
569 }
570 void SIMIX_host_execution_set_priority(smx_action_t action, double priority){
571
572   if(action->execution.surf_exec)
573         surf_action_set_priority(action->execution.surf_exec, priority);
574 }
575
576 void simcall_HANDLER_host_execution_set_bound(smx_simcall_t simcall, smx_action_t action,
577                                         double bound){
578   SIMIX_host_execution_set_bound(action, bound);
579 }
580 void SIMIX_host_execution_set_bound(smx_action_t action, double bound){
581
582   if(action->execution.surf_exec)
583         surf_cpu_action_set_bound(action->execution.surf_exec, bound);
584 }
585
586 void simcall_HANDLER_host_execution_set_affinity(smx_simcall_t simcall,
587     smx_action_t action, smx_host_t host, unsigned long mask){
588   SIMIX_host_execution_set_affinity(action, host, mask);
589 }
590 void SIMIX_host_execution_set_affinity(smx_action_t action, smx_host_t host, unsigned long mask){
591   xbt_assert(action->type == SIMIX_ACTION_EXECUTE);
592
593   if (action->execution.surf_exec) {
594     /* just a double check to confirm that this host is the host where this task is running. */
595     xbt_assert(action->execution.host == host);
596     surf_cpu_action_set_affinity(action->execution.surf_exec, host, mask);
597   }
598 }
599
600 void simcall_HANDLER_host_execution_wait(smx_simcall_t simcall, smx_action_t action){
601
602   XBT_DEBUG("Wait for execution of action %p, state %d", action, (int)action->state);
603
604   /* Associate this simcall to the action */
605   xbt_fifo_push(action->simcalls, simcall);
606   simcall->issuer->waiting_action = action;
607
608   /* set surf's action */
609   if (MC_is_active()) {
610     action->state = SIMIX_DONE;
611     SIMIX_execution_finish(action);
612     return;
613   }
614
615   /* If the action is already finished then perform the error handling */
616   if (action->state != SIMIX_RUNNING)
617     SIMIX_execution_finish(action);
618 }
619
620 void SIMIX_host_execution_suspend(smx_action_t action)
621 {
622   if(action->execution.surf_exec)
623     surf_action_suspend(action->execution.surf_exec);
624 }
625
626 void SIMIX_host_execution_resume(smx_action_t action)
627 {
628   if(action->execution.surf_exec)
629     surf_action_resume(action->execution.surf_exec);
630 }
631
632 void SIMIX_execution_finish(smx_action_t action)
633 {
634   xbt_fifo_item_t item;
635   smx_simcall_t simcall;
636
637   xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
638
639     switch (action->state) {
640
641       case SIMIX_DONE:
642         /* do nothing, action done */
643   XBT_DEBUG("SIMIX_execution_finished: execution successful");
644         break;
645
646       case SIMIX_FAILED:
647         XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
648         simcall->issuer->context->iwannadie = 1;
649         SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
650         break;
651
652       case SIMIX_CANCELED:
653         XBT_DEBUG("SIMIX_execution_finished: execution canceled");
654         SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
655         break;
656
657       default:
658         xbt_die("Internal error in SIMIX_execution_finish: unexpected action state %d",
659             (int)action->state);
660     }
661     /* check if the host is down */
662     if (surf_resource_get_state(surf_workstation_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
663       simcall->issuer->context->iwannadie = 1;
664     }
665
666     simcall->issuer->waiting_action =    NULL;
667     simcall_host_execution_wait__set__result(simcall, action->state);
668     SIMIX_simcall_answer(simcall);
669   }
670
671   /* We no longer need it */
672   SIMIX_host_execution_destroy(action);
673 }
674
675
676 void SIMIX_post_host_execute(smx_action_t action)
677 {
678   if (action->type == SIMIX_ACTION_EXECUTE && /* FIMXE: handle resource failure
679                                                * for parallel tasks too */
680       surf_resource_get_state(surf_workstation_resource_priv(action->execution.host)) == SURF_RESOURCE_OFF) {
681     /* If the host running the action failed, notice it so that the asking
682      * process can be killed if it runs on that host itself */
683     action->state = SIMIX_FAILED;
684   } else if (surf_action_get_state(action->execution.surf_exec) == SURF_ACTION_FAILED) {
685     /* If the host running the action didn't fail, then the action was
686      * canceled */
687     action->state = SIMIX_CANCELED;
688   } else {
689     action->state = SIMIX_DONE;
690   }
691
692   if (action->execution.surf_exec) {
693     surf_action_unref(action->execution.surf_exec);
694     action->execution.surf_exec = NULL;
695   }
696
697   /* If there are simcalls associated with the action, then answer them */
698   if (xbt_fifo_size(action->simcalls)) {
699     SIMIX_execution_finish(action);
700   }
701 }
702
703
704 #ifdef HAVE_TRACING
705 void simcall_HANDLER_set_category(smx_simcall_t simcall, smx_action_t action,
706                             const char *category){
707   SIMIX_set_category(action, category);
708 }
709 void SIMIX_set_category(smx_action_t action, const char *category)
710 {
711   if (action->state != SIMIX_RUNNING) return;
712   if (action->type == SIMIX_ACTION_EXECUTE){
713     surf_action_set_category(action->execution.surf_exec, category);
714   }else if (action->type == SIMIX_ACTION_COMMUNICATE){
715     surf_action_set_category(action->comm.surf_comm, category);
716   }
717 }
718 #endif
719
720 /**
721  * \brief Function to get the parameters of the given the SIMIX host.
722  *
723  * \param host the host to get_phys_host (a smx_host_t)
724  * \param param the parameter object space to be overwritten (a ws_params_t)
725  */
726 void SIMIX_host_get_params(smx_host_t ind_vm, ws_params_t params)
727 {
728   /* jump to ws_get_params(). */
729   surf_workstation_get_params(ind_vm, params);
730 }
731
732 void simcall_HANDLER_host_get_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
733 {
734   SIMIX_host_get_params(ind_vm, params);
735 }
736
737 void SIMIX_host_set_params(smx_host_t ind_vm, ws_params_t params)
738 {
739   /* jump to ws_set_params(). */
740   surf_workstation_set_params(ind_vm, params);
741 }
742
743 void simcall_HANDLER_host_set_params(smx_simcall_t simcall, smx_host_t ind_vm, ws_params_t params)
744 {
745   SIMIX_host_set_params(ind_vm, params);
746 }
747
748 xbt_dict_t simcall_HANDLER_host_get_mounted_storage_list(smx_simcall_t simcall, smx_host_t host){
749   return SIMIX_host_get_mounted_storage_list(host);
750 }
751
752 xbt_dict_t SIMIX_host_get_mounted_storage_list(smx_host_t host){
753   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
754
755   return surf_workstation_get_mounted_storage_list(host);
756 }
757
758 xbt_dynar_t simcall_HANDLER_host_get_attached_storage_list(smx_simcall_t simcall, smx_host_t host){
759   return SIMIX_host_get_attached_storage_list(host);
760 }
761
762 xbt_dynar_t SIMIX_host_get_attached_storage_list(smx_host_t host){
763   xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
764
765   return surf_workstation_get_attached_storage_list(host);
766 }