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 Creates a new sleep SIMIX synchro.
 274  *
 275  * This function creates a SURF action and allocates the data necessary
 276  * to create the SIMIX synchro. It can raise a host_error exception if the
 277  * host crashed. The default SIMIX name of the synchro is "sleep".
 278  *
 279  *   \param duration Time duration of the sleep.
 280  *   \return A result telling whether the sleep was successful
 281  */
 282 e_smx_state_t simcall_process_sleep(double duration)
 283 {
 284   /* checking for infinite values */
 285   xbt_assert(std::isfinite(duration), "duration is not finite!");
 286   return (e_smx_state_t) simcall_BODY_process_sleep(duration);
 287 }
 288
 289 /**
 290  * \ingroup simix_comm_management
 291  */
 292 void simcall_comm_send(smx_actor_t sender, smx_mailbox_t mbox, double task_size, double rate, void* src_buff,
 293                        size_t src_buff_size, int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
 294                        void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data, double timeout)
 295 {
 296   /* checking for infinite values */
 297   xbt_assert(std::isfinite(task_size), "task_size is not finite!");
 298   xbt_assert(std::isfinite(rate), "rate is not finite!");
 299   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
 300
 301   xbt_assert(mbox, "No rendez-vous point defined for send");
 302
 303   if (MC_is_active() || MC_record_replay_is_active()) {
 304     /* the model-checker wants two separate simcalls */
 305     smx_activity_t comm = nullptr; /* MC needs the comm to be set to nullptr during the simcall */
 306     comm = simcall_comm_isend(sender, mbox, task_size, rate,
 307         src_buff, src_buff_size, match_fun, nullptr, copy_data_fun, data, 0);
 308     simcall_comm_wait(comm, timeout);
 309     comm = nullptr;
 310   }
 311   else {
 312     simcall_BODY_comm_send(sender, mbox, task_size, rate, src_buff, src_buff_size,
 313                          match_fun, copy_data_fun, data, timeout);
 314   }
 315 }
 316
 317 /**
 318  * \ingroup simix_comm_management
 319  */
 320 smx_activity_t simcall_comm_isend(smx_actor_t sender, smx_mailbox_t mbox, double task_size, double rate, void* src_buff,
 321                                   size_t src_buff_size,
 322                                   int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
 323                                   void (*clean_fun)(void*), void (*copy_data_fun)(smx_activity_t, void*, size_t),
 324                                   void* data, int detached)
 325 {
 326   /* checking for infinite values */
 327   xbt_assert(std::isfinite(task_size), "task_size is not finite!");
 328   xbt_assert(std::isfinite(rate), "rate is not finite!");
 329
 330   xbt_assert(mbox, "No rendez-vous point defined for isend");
 331
 332   return simcall_BODY_comm_isend(sender, mbox, task_size, rate, src_buff,
 333                                  src_buff_size, match_fun,
 334                                  clean_fun, copy_data_fun, data, detached);
 335 }
 336
 337 /**
 338  * \ingroup simix_comm_management
 339  */
 340 void simcall_comm_recv(smx_actor_t receiver, smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
 341                        int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
 342                        void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data, double timeout, double rate)
 343 {
 344   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
 345   xbt_assert(mbox, "No rendez-vous point defined for recv");
 346
 347   if (MC_is_active() || MC_record_replay_is_active()) {
 348     /* the model-checker wants two separate simcalls */
 349     smx_activity_t comm = nullptr; /* MC needs the comm to be set to nullptr during the simcall */
 350     comm = simcall_comm_irecv(receiver, mbox, dst_buff, dst_buff_size,
 351                               match_fun, copy_data_fun, data, rate);
 352     simcall_comm_wait(comm, timeout);
 353     comm = nullptr;
 354   }
 355   else {
 356     simcall_BODY_comm_recv(receiver, mbox, dst_buff, dst_buff_size,
 357                            match_fun, copy_data_fun, data, timeout, rate);
 358   }
 359 }
 360 /**
 361  * \ingroup simix_comm_management
 362  */
 363 smx_activity_t simcall_comm_irecv(smx_actor_t receiver, smx_mailbox_t mbox, void* dst_buff, size_t* dst_buff_size,
 364                                   int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*),
 365                                   void (*copy_data_fun)(smx_activity_t, void*, size_t), void* data, double rate)
 366 {
 367   xbt_assert(mbox, "No rendez-vous point defined for irecv");
 368
 369   return simcall_BODY_comm_irecv(receiver, mbox, dst_buff, dst_buff_size,
 370                                  match_fun, copy_data_fun, data, rate);
 371 }
 372
 373 /**
 374  * \ingroup simix_comm_management
 375  */
 376 smx_activity_t simcall_comm_iprobe(smx_mailbox_t mbox, int type,
 377                                    int (*match_fun)(void*, void*, simgrid::kernel::activity::CommImpl*), void* data)
 378 {
 379   xbt_assert(mbox, "No rendez-vous point defined for iprobe");
 380
 381   return simcall_BODY_comm_iprobe(mbox, type, match_fun, data);
 382 }
 383
 384 /**
 385  * \ingroup simix_comm_management
 386  */
 387 void simcall_comm_cancel(smx_activity_t synchro)
 388 {
 389   simgrid::simix::kernelImmediate([synchro] {
 390     simgrid::kernel::activity::CommImplPtr comm =
 391         boost::static_pointer_cast<simgrid::kernel::activity::CommImpl>(synchro);
 392     comm->cancel();
 393   });
 394 }
 395
 396 /**
 397  * \ingroup simix_comm_management
 398  */
 399 unsigned int simcall_comm_waitany(xbt_dynar_t comms, double timeout)
 400 {
 401   return simcall_BODY_comm_waitany(comms, timeout);
 402 }
 403
 404 /**
 405  * \ingroup simix_comm_management
 406  */
 407 int simcall_comm_testany(smx_activity_t* comms, size_t count)
 408 {
 409   if (count == 0)
 410     return -1;
 411   return simcall_BODY_comm_testany(comms, count);
 412 }
 413
 414 /**
 415  * \ingroup simix_comm_management
 416  */
 417 void simcall_comm_wait(smx_activity_t comm, double timeout)
 418 {
 419   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
 420   simcall_BODY_comm_wait(comm, timeout);
 421 }
 422
 423 /**
 424  * \brief Set the category of an synchro.
 425  *
 426  * This functions changes the category only. It calls a surf function.
 427  * \param synchro The execution synchro
 428  * \param category The tracing category
 429  */
 430 void simcall_set_category(smx_activity_t synchro, const char *category)
 431 {
 432   if (category == nullptr) {
 433     return;
 434   }
 435   simcall_BODY_set_category(synchro, category);
 436 }
 437
 438 /**
 439  * \ingroup simix_comm_management
 440  *
 441  */
 442 int simcall_comm_test(smx_activity_t comm)
 443 {
 444   return simcall_BODY_comm_test(comm);
 445 }
 446
 447 /**
 448  * \ingroup simix_synchro_management
 449  *
 450  */
 451 smx_mutex_t simcall_mutex_init()
 452 {
 453   if (not simix_global) {
 454     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
 455     xbt_abort();
 456   }
 457   return simgrid::simix::kernelImmediate([] { return new simgrid::simix::MutexImpl(); });
 458 }
 459
 460 /**
 461  * \ingroup simix_synchro_management
 462  *
 463  */
 464 void simcall_mutex_lock(smx_mutex_t mutex)
 465 {
 466   simcall_BODY_mutex_lock(mutex);
 467 }
 468
 469 /**
 470  * \ingroup simix_synchro_management
 471  *
 472  */
 473 int simcall_mutex_trylock(smx_mutex_t mutex)
 474 {
 475   return simcall_BODY_mutex_trylock(mutex);
 476 }
 477
 478 /**
 479  * \ingroup simix_synchro_management
 480  *
 481  */
 482 void simcall_mutex_unlock(smx_mutex_t mutex)
 483 {
 484   simcall_BODY_mutex_unlock(mutex);
 485 }
 486
 487 /**
 488  * \ingroup simix_synchro_management
 489  *
 490  */
 491 smx_cond_t simcall_cond_init()
 492 {
 493   return simcall_BODY_cond_init();
 494 }
 495
 496 /**
 497  * \ingroup simix_synchro_management
 498  *
 499  */
 500 void simcall_cond_signal(smx_cond_t cond)
 501 {
 502   simcall_BODY_cond_signal(cond);
 503 }
 504
 505 /**
 506  * \ingroup simix_synchro_management
 507  *
 508  */
 509 void simcall_cond_wait(smx_cond_t cond, smx_mutex_t mutex)
 510 {
 511   simcall_BODY_cond_wait(cond, mutex);
 512 }
 513
 514 /**
 515  * \ingroup simix_synchro_management
 516  *
 517  */
 518 void simcall_cond_wait_timeout(smx_cond_t cond,
 519                                  smx_mutex_t mutex,
 520                                  double timeout)
 521 {
 522   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
 523   simcall_BODY_cond_wait_timeout(cond, mutex, timeout);
 524 }
 525
 526 /**
 527  * \ingroup simix_synchro_management
 528  *
 529  */
 530 void simcall_cond_broadcast(smx_cond_t cond)
 531 {
 532   simcall_BODY_cond_broadcast(cond);
 533 }
 534
 535 /**
 536  * \ingroup simix_synchro_management
 537  *
 538  */
 539 void simcall_sem_acquire(smx_sem_t sem)
 540 {
 541   simcall_BODY_sem_acquire(sem);
 542 }
 543
 544 /**
 545  * \ingroup simix_synchro_management
 546  *
 547  */
 548 void simcall_sem_acquire_timeout(smx_sem_t sem, double timeout)
 549 {
 550   xbt_assert(std::isfinite(timeout), "timeout is not finite!");
 551   simcall_BODY_sem_acquire_timeout(sem, timeout);
 552 }
 553
 554 /**
 555  * \ingroup simix_file_management
 556  *
 557  */
 558 sg_size_t simcall_file_read(surf_file_t fd, sg_size_t size)
 559 {
 560   return simcall_BODY_file_read(fd, size);
 561 }
 562
 563 /**
 564  * \ingroup simix_file_management
 565  *
 566  */
 567 sg_size_t simcall_file_write(surf_file_t fd, sg_size_t size)
 568 {
 569   return simcall_BODY_file_write(fd, size);
 570 }
 571
 572 void simcall_run_kernel(std::function<void()> const& code)
 573 {
 574   simcall_BODY_run_kernel(&code);
 575 }
 576
 577 void simcall_run_blocking(std::function<void()> const& code)
 578 {
 579   simcall_BODY_run_blocking(&code);
 580 }
 581
 582 int simcall_mc_random(int min, int max) {
 583   return simcall_BODY_mc_random(min, max);
 584 }
 585
 586 /* ************************************************************************** */
 587
 588 /** @brief returns a printable string representing a simcall */
 589 const char *SIMIX_simcall_name(e_smx_simcall_t kind) {
 590   return simcall_names[kind];
 591 }
 592
 593 namespace simgrid {
 594 namespace simix {
 595
 596 void unblock(smx_actor_t process)
 597 {
 598   xbt_assert(SIMIX_is_maestro());
 599   SIMIX_simcall_answer(&process->simcall);
 600 }
 601
 602 }
 603 }