Logo AND Algorithmique Numérique Distribuée

Public GIT Repository
1d1b2a682bb9f74e0320cd5bff53bc99459460c8
[simgrid.git] / src / simix / libsmx.cpp
1 /* libsmx.c - public interface to simix                                       */
2 /* --------                                                                   */
3 /* These functions are the only ones that are visible from the higher levels  */
4 /* (most of them simply add some documentation to the generated simcall body) */
5 /*                                                                            */
6 /* This is somehow the "libc" of SimGrid                                      */
7
8 /* Copyright (c) 2010-2015. The SimGrid Team.
9  * All rights reserved.                                                     */
10
11 /* This program is free software; you can redistribute it and/or modify it
12  * under the terms of the license (GNU LGPL) which comes with this package. */
13
14 #include <cmath>         /* std::isfinite() */
15
16 #include <functional>
17
18 #include "mc/mc.h"
19 #include "simgrid/s4u/VirtualMachine.hpp"
20 #include "simgrid/simix.hpp"
21 #include "simgrid/simix/blocking_simcall.hpp"
22 #include "smx_private.h"
23 #include "src/kernel/activity/CommImpl.hpp"
24 #include "src/mc/mc_forward.hpp"
25 #include "src/mc/mc_replay.h"
26 #include "src/plugins/vm/VirtualMachineImpl.hpp"
27 #include "src/simix/smx_host_private.h"
28 #include "xbt/ex.h"
29 #include "xbt/functional.hpp"
30
31 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix);
32
33 #include "popping_bodies.cpp"
34
35 void simcall_call(smx_actor_t actor)
36 {
37   if (actor != simix_global->maestro_process) {
38     XBT_DEBUG("Yield actor '%s' on simcall %s (%d)", actor->cname(), SIMIX_simcall_name(actor->simcall.call),
39               (int)actor->simcall.call);
40     SIMIX_process_yield(actor);
41   } else {
42     SIMIX_simcall_handle(&actor->simcall, 0);
43   }
44 }
45
46 /**
47  * \ingroup simix_process_management
48  * \brief Creates a synchro that executes some computation of an host.
49  *
50  * This function creates a SURF action and allocates the data necessary
51  * to create the SIMIX synchro. It can raise a host_error exception if the host crashed.
52  *
53  * \param name Name of the execution synchro to create
54  * \param flops_amount amount Computation amount (in flops)
55  * \param priority computation priority
56  * \param bound
57  * \return A new SIMIX execution synchronization
58  */
59 smx_activity_t simcall_execution_start(const char *name,
60                                     double flops_amount,
61                                     double priority, double bound)
62 {
63   /* checking for infinite values */
64   xbt_assert(std::isfinite(flops_amount), "flops_amount is not finite!");
65   xbt_assert(std::isfinite(priority), "priority is not finite!");
66
67   return simcall_BODY_execution_start(name, flops_amount, priority, bound);
68 }
69
70 /**
71  * \ingroup simix_process_management
72  * \brief Creates a synchro that may involve parallel computation on
73  * several hosts and communication between them.
74  *
75  * \param name Name of the execution synchro to create
76  * \param host_nb Number of hosts where the synchro will be executed
77  * \param host_list Array (of size host_nb) of hosts where the synchro will be executed
78  * \param flops_amount Array (of size host_nb) of computation amount of hosts (in bytes)
79  * \param bytes_amount Array (of size host_nb * host_nb) representing the communication
80  * amount between each pair of hosts
81  * \param amount the SURF action amount
82  * \param rate the SURF action rate
83  * \param timeout timeout
84  * \return A new SIMIX execution synchronization
85  */
86 smx_activity_t simcall_execution_parallel_start(const char* name, int host_nb, sg_host_t* host_list,
87                                                 double* flops_amount, double* bytes_amount, double amount, double rate,
88                                                 double timeout)
89 {
90   /* checking for infinite values */
91   for (int i = 0 ; i < host_nb ; ++i) {
92     xbt_assert(std::isfinite(flops_amount[i]), "flops_amount[%d] is not finite!", i);
93     if (bytes_amount != nullptr) {
94       for (int j = 0 ; j < host_nb ; ++j) {
95         xbt_assert(std::isfinite(bytes_amount[i + host_nb * j]),
96                    "bytes_amount[%d+%d*%d] is not finite!", i, host_nb, j);
97       }
98     }
99   }
100
101   xbt_assert(std::isfinite(amount), "amount is not finite!");
102   xbt_assert(std::isfinite(rate), "rate is not finite!");
103
104   return simcall_BODY_execution_parallel_start(name, host_nb, host_list, flops_amount, bytes_amount, amount, rate,
105                                                timeout);
106 }
107
108 /**
109  * \ingroup simix_process_management
110  * \brief Cancels an execution synchro.
111  *
112  * This functions stops the execution. It calls a surf function.
113  * \param execution The execution synchro to cancel
114  */
115 void simcall_execution_cancel(smx_activity_t execution)
116 {
117   simcall_BODY_execution_cancel(execution);
118 }
119
120 /**
121  * \ingroup simix_process_management
122  * \brief Changes the priority of an execution synchro.
123  *
124  * This functions changes the priority only. It calls a surf function.
125  * \param execution The execution synchro
126  * \param priority The new priority
127  */
128 void simcall_execution_set_priority(smx_activity_t execution, double priority)
129 {
130   /* checking for infinite values */
131   xbt_assert(std::isfinite(priority), "priority is not finite!");
132
133   simcall_BODY_execution_set_priority(execution, priority);
134 }
135
136 /**
137  * \ingroup simix_process_management
138  * \brief Changes the capping (the maximum CPU utilization) of an execution synchro.
139  *
140  * This functions changes the capping only. It calls a surf function.
141  * \param execution The execution synchro
142  * \param bound The new bound
143  */
144 void simcall_execution_set_bound(smx_activity_t execution, double bound)
145 {
146   simcall_BODY_execution_set_bound(execution, bound);
147 }
148
149 /**
150  * \ingroup simix_host_management
151  * \brief Waits for the completion of an execution synchro and destroy it.
152  *
153  * \param execution The execution synchro
154  */
155 e_smx_state_t simcall_execution_wait(smx_activity_t execution)
156 {
157   return (e_smx_state_t) simcall_BODY_execution_wait(execution);
158 }
159
160 /**
161  * \ingroup simix_process_management
162  * \brief Kills a SIMIX process.
163  *
164  * This function simply kills a  process.
165  *
166  * \param process poor victim
167  */
168 void simcall_process_kill(smx_actor_t process)
169 {
170   simcall_BODY_process_kill(process);
171 }
172
173 /**
174  * \ingroup simix_process_management
175  * \brief Kills all SIMIX processes.
176  */
177 void simcall_process_killall(int reset_pid)
178 {
179   simcall_BODY_process_killall(reset_pid);
180 }
181
182 /**
183  * \ingroup simix_process_management
184  * \brief Cleans up a SIMIX process.
185  * \param process poor victim (must have already been killed)
186  */
187 void simcall_process_cleanup(smx_actor_t process)
188 {
189   simcall_BODY_process_cleanup(process);
190 }
191
192 void simcall_process_join(smx_actor_t process, double timeout)
193 {
194   simcall_BODY_process_join(process, timeout);
195 }
196
197 /**
198  * \ingroup simix_process_management
199  * \brief Suspends a process.
200  *
201  * This function suspends the process by suspending the synchro
202  * it was waiting for completion.
203  *
204  * \param process a SIMIX process
205  */
206 void simcall_process_suspend(smx_actor_t process)
207 {
208   simcall_BODY_process_suspend(process);
209 }
210
211 /**
212  * \ingroup simix_process_management
213  * \brief Returns the amount of SIMIX processes in the system
214  *
215  * Maestro internal process is not counted, only user code processes are
216  */
217 int simcall_process_count()
218 {
219   return simgrid::simix::kernelImmediate(SIMIX_process_count);
220 }
221
222 /**
223  * \ingroup simix_process_management
224  * \brief Set the user data of a #smx_actor_t.
225  *
226  * This functions sets the user data associated to \a process.
227  * \param process SIMIX process
228  * \param data User data
229  */
230 void simcall_process_set_data(smx_actor_t process, void *data)
231 {
232   simgrid::simix::kernelImmediate([process, data] { process->setUserData(data); });
233 }
234
235 /**
236  * \ingroup simix_process_management
237  * \brief Set the kill time of a process.
238  */
239 void simcall_process_set_kill_time(smx_actor_t process, double kill_time)
240 {
241
242   if (kill_time <= SIMIX_get_clock() || simix_global->kill_process_function == nullptr)
243     return;
244   XBT_DEBUG("Set kill time %f for process %s@%s", kill_time, process->cname(), process->host->getCname());
245   process->kill_timer = SIMIX_timer_set(kill_time, [=] {
246     simix_global->kill_process_function(process);
247     process->kill_timer=nullptr;
248   });
249 }
250
251 /**
252  * \ingroup simix_process_management
253  * \brief Return the properties
254  *
255  * This function returns the properties associated with this process
256  */
257 xbt_dict_t simcall_process_get_properties(smx_actor_t process)
258 {
259   return process->properties;
260 }
261 /**
262  * \ingroup simix_process_management
263  * \brief Add an on_exit function
264  * Add an on_exit function which will be executed when the process exits/is killed.
265  */
266 XBT_PUBLIC(void) simcall_process_on_exit(smx_actor_t process, int_f_pvoid_pvoid_t fun, void *data)
267 {
268   simcall_BODY_process_on_exit(process, fun, data);
269 }
270
271 /**
272  * \ingroup simix_process_management
273  * \brief Restarts the process, killing it and starting it again from scratch.
274  */
275 XBT_PUBLIC(smx_actor_t) simcall_process_restart(smx_actor_t process)
276 {
277   return (smx_actor_t) simcall_BODY_process_restart(process);
278 }
279 /**
280  * \ingroup simix_process_management
281  * \brief Creates a new sleep SIMIX synchro.
282  *
283  * This function creates a SURF action and allocates the data necessary
284  * to create the SIMIX synchro. It can raise a host_error exception if the
285  * host crashed. The default SIMIX name of the synchro is "sleep".
286  *
287  *   \param duration Time duration of the sleep.
288  *   \return A result telling whether the sleep was successful
289  */
290 e_smx_state_t simcall_process_sleep(double duration)
291 {
292   /* checking for infinite values */
293   xbt_assert(std::isfinite(duration), "duration is not finite!");
294   return (e_smx_state_t) simcall_BODY_process_sleep(duration);
295 }
296
297 /**
298  * \ingroup simix_comm_management
299  */
300 void simcall_comm_send(smx_actor_t sender, smx_mailbox_t mbox, double task_size, double rate, void* src_buff,
301                        size_t src_buff_size, int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
302                        void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data, double timeout)
303 {
304   /* checking for infinite values */
305   xbt_assert(std::isfinite(task_size), "task_size is not finite!");
306   xbt_assert(std::isfinite(rate), "rate is not finite!");
307   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
308
309   xbt_assert(mbox, "No rendez-vous point defined for send");
310
311   if (MC_is_active() || MC_record_replay_is_active()) {
312     /* the model-checker wants two separate simcalls */
313     smx_activity_t comm = nullptr; /* MC needs the comm to be set to nullptr during the simcall */
314     comm = simcall_comm_isend(sender, mbox, task_size, rate,
315         src_buff, src_buff_size, match_fun, nullptr, copy_data_fun, data, 0);
316     simcall_comm_wait(comm, timeout);
317     comm = nullptr;
318   }
319   else {
320     simcall_BODY_comm_send(sender, mbox, task_size, rate, src_buff, src_buff_size,
321                          match_fun, copy_data_fun, data, timeout);
322   }
323 }
324
325 /**
326  * \ingroup simix_comm_management
327  */
328 smx_activity_t simcall_comm_isend(smx_actor_t sender, smx_mailbox_t mbox, double task_size, double rate, void* src_buff,
329                                   size_t src_buff_size,
330                                   int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
331                                   void (*clean_fun)(void*), void (*copy_data_fun)(smx_activity_t, void*, size_t),
332                                   void* data, int detached)
333 {
334   /* checking for infinite values */
335   xbt_assert(std::isfinite(task_size), "task_size is not finite!");
336   xbt_assert(std::isfinite(rate), "rate is not finite!");
337
338   xbt_assert(mbox, "No rendez-vous point defined for isend");
339
340   return simcall_BODY_comm_isend(sender, mbox, task_size, rate, src_buff,
341                                  src_buff_size, match_fun,
342                                  clean_fun, copy_data_fun, data, detached);
343 }
344
345 /**
346  * \ingroup simix_comm_management
347  */
348 void simcall_comm_recv(smx_actor_t receiver, smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
349                        int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
350                        void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data, double timeout, double rate)
351 {
352   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
353   xbt_assert(mbox, "No rendez-vous point defined for recv");
354
355   if (MC_is_active() || MC_record_replay_is_active()) {
356     /* the model-checker wants two separate simcalls */
357     smx_activity_t comm = nullptr; /* MC needs the comm to be set to nullptr during the simcall */
358     comm = simcall_comm_irecv(receiver, mbox, dst_buff, dst_buff_size,
359                               match_fun, copy_data_fun, data, rate);
360     simcall_comm_wait(comm, timeout);
361     comm = nullptr;
362   }
363   else {
364     simcall_BODY_comm_recv(receiver, mbox, dst_buff, dst_buff_size,
365                            match_fun, copy_data_fun, data, timeout, rate);
366   }
367 }
368 /**
369  * \ingroup simix_comm_management
370  */
371 smx_activity_t simcall_comm_irecv(smx_actor_t receiver, smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
372                                   int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
373                                   void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data, double rate)
374 {
375   xbt_assert(mbox, "No rendez-vous point defined for irecv");
376
377   return simcall_BODY_comm_irecv(receiver, mbox, dst_buff, dst_buff_size,
378                                  match_fun, copy_data_fun, data, rate);
379 }
380
381 /**
382  * \ingroup simix_comm_management
383  */
384 smx_activity_t simcall_comm_iprobe(smx_mailbox_t mbox, int type,
385                                    int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*), void* data)
386 {
387   xbt_assert(mbox, "No rendez-vous point defined for iprobe");
388
389   return simcall_BODY_comm_iprobe(mbox, type, match_fun, data);
390 }
391
392 /**
393  * \ingroup simix_comm_management
394  */
395 void simcall_comm_cancel(smx_activity_t synchro)
396 {
397   simgrid::simix::kernelImmediate([synchro] {
398     simgrid::kernel::activity::CommImplPtr comm =
399         boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
400     comm->cancel();
401   });
402 }
403
404 /**
405  * \ingroup simix_comm_management
406  */
407 unsigned int simcall_comm_waitany(xbt_dynar_t comms, double timeout)
408 {
409   return simcall_BODY_comm_waitany(comms, timeout);
410 }
411
412 /**
413  * \ingroup simix_comm_management
414  */
415 int simcall_comm_testany(smx_activity_t* comms, size_t count)
416 {
417   if (count == 0)
418     return -1;
419   return simcall_BODY_comm_testany(comms, count);
420 }
421
422 /**
423  * \ingroup simix_comm_management
424  */
425 void simcall_comm_wait(smx_activity_t comm, double timeout)
426 {
427   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
428   simcall_BODY_comm_wait(comm, timeout);
429 }
430
431 /**
432  * \brief Set the category of an synchro.
433  *
434  * This functions changes the category only. It calls a surf function.
435  * \param synchro The execution synchro
436  * \param category The tracing category
437  */
438 void simcall_set_category(smx_activity_t synchro, const char *category)
439 {
440   if (category == nullptr) {
441     return;
442   }
443   simcall_BODY_set_category(synchro, category);
444 }
445
446 /**
447  * \ingroup simix_comm_management
448  *
449  */
450 int simcall_comm_test(smx_activity_t comm)
451 {
452   return simcall_BODY_comm_test(comm);
453 }
454
455 /**
456  * \ingroup simix_synchro_management
457  *
458  */
459 smx_mutex_t simcall_mutex_init()
460 {
461   if (not simix_global) {
462     fprintf(stderr,"You must run MSG_init before using MSG\n"); // We can't use xbt_die since we may get there before the initialization
463     xbt_abort();
464   }
465   return simcall_BODY_mutex_init();
466 }
467
468 /**
469  * \ingroup simix_synchro_management
470  *
471  */
472 void simcall_mutex_lock(smx_mutex_t mutex)
473 {
474   simcall_BODY_mutex_lock(mutex);
475 }
476
477 /**
478  * \ingroup simix_synchro_management
479  *
480  */
481 int simcall_mutex_trylock(smx_mutex_t mutex)
482 {
483   return simcall_BODY_mutex_trylock(mutex);
484 }
485
486 /**
487  * \ingroup simix_synchro_management
488  *
489  */
490 void simcall_mutex_unlock(smx_mutex_t mutex)
491 {
492   simcall_BODY_mutex_unlock(mutex);
493 }
494
495 /**
496  * \ingroup simix_synchro_management
497  *
498  */
499 smx_cond_t simcall_cond_init()
500 {
501   return simcall_BODY_cond_init();
502 }
503
504 /**
505  * \ingroup simix_synchro_management
506  *
507  */
508 void simcall_cond_signal(smx_cond_t cond)
509 {
510   simcall_BODY_cond_signal(cond);
511 }
512
513 /**
514  * \ingroup simix_synchro_management
515  *
516  */
517 void simcall_cond_wait(smx_cond_t cond, smx_mutex_t mutex)
518 {
519   simcall_BODY_cond_wait(cond, mutex);
520 }
521
522 /**
523  * \ingroup simix_synchro_management
524  *
525  */
526 void simcall_cond_wait_timeout(smx_cond_t cond,
527                                  smx_mutex_t mutex,
528                                  double timeout)
529 {
530   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
531   simcall_BODY_cond_wait_timeout(cond, mutex, timeout);
532 }
533
534 /**
535  * \ingroup simix_synchro_management
536  *
537  */
538 void simcall_cond_broadcast(smx_cond_t cond)
539 {
540   simcall_BODY_cond_broadcast(cond);
541 }
542
543 /**
544  * \ingroup simix_synchro_management
545  *
546  */
547 smx_sem_t simcall_sem_init(int capacity)
548 {
549   return simcall_BODY_sem_init(capacity);
550 }
551
552 /**
553  * \ingroup simix_synchro_management
554  *
555  */
556 void simcall_sem_release(smx_sem_t sem)
557 {
558   simcall_BODY_sem_release(sem);
559 }
560
561 /**
562  * \ingroup simix_synchro_management
563  *
564  */
565 int simcall_sem_would_block(smx_sem_t sem)
566 {
567   return simcall_BODY_sem_would_block(sem);
568 }
569
570 /**
571  * \ingroup simix_synchro_management
572  *
573  */
574 void simcall_sem_acquire(smx_sem_t sem)
575 {
576   simcall_BODY_sem_acquire(sem);
577 }
578
579 /**
580  * \ingroup simix_synchro_management
581  *
582  */
583 void simcall_sem_acquire_timeout(smx_sem_t sem, double timeout)
584 {
585   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
586   simcall_BODY_sem_acquire_timeout(sem, timeout);
587 }
588
589 /**
590  * \ingroup simix_synchro_management
591  *
592  */
593 int simcall_sem_get_capacity(smx_sem_t sem)
594 {
595   return simcall_BODY_sem_get_capacity(sem);
596 }
597
598 /**
599  * \ingroup simix_file_management
600  *
601  */
602 sg_size_t simcall_file_read(surf_file_t fd, sg_size_t size)
603 {
604   return simcall_BODY_file_read(fd, size);
605 }
606
607 /**
608  * \ingroup simix_file_management
609  *
610  */
611 sg_size_t simcall_file_write(surf_file_t fd, sg_size_t size)
612 {
613   return simcall_BODY_file_write(fd, size);
614 }
615
616 void simcall_run_kernel(std::function<void()> const& code)
617 {
618   simcall_BODY_run_kernel(&code);
619 }
620
621 void simcall_run_blocking(std::function<void()> const& code)
622 {
623   simcall_BODY_run_blocking(&code);
624 }
625
626 int simcall_mc_random(int min, int max) {
627   return simcall_BODY_mc_random(min, max);
628 }
629
630 /* ************************************************************************** */
631
632 /** @brief returns a printable string representing a simcall */
633 const char *SIMIX_simcall_name(e_smx_simcall_t kind) {
634   return simcall_names[kind];
635 }
636
637 namespace simgrid {
638 namespace simix {
639
640 void unblock(smx_actor_t process)
641 {
642   xbt_assert(SIMIX_is_maestro());
643   SIMIX_simcall_answer(&process->simcall);
644 }
645
646 }
647 }