src/simix/smx_smurf.c

   1 /* Copyright (c) 2010-2014. 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/fifo.h"
   9 #include "xbt/xbt_os_thread.h"
  10 #ifdef HAVE_MC
  11 #include "mc/mc_private.h"
  12 #endif
  13
  14 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_smurf, simix,
  15                                 "Logging specific to SIMIX (SMURF)");
  16
  17 XBT_INLINE smx_simcall_t SIMIX_simcall_mine()
  18 {
  19   smx_process_t issuer = SIMIX_process_self();
  20   return &issuer->simcall;
  21 }
  22
  23 /**
  24  * \brief Makes the current process do a simcall to the kernel and yields
  25  * until completion. If the current thread is maestro, we don't yield and
  26  * execute the simcall directly.
  27  * \param self the current process
  28  */
  29 void SIMIX_simcall_push(smx_process_t self)
  30 {
  31   if (self != simix_global->maestro_process) {
  32     XBT_DEBUG("Yield process '%s' on simcall %s (%d)", self->name,
  33               SIMIX_simcall_name(self->simcall.call), (int)self->simcall.call);
  34     SIMIX_process_yield(self);
  35   } else {
  36     XBT_DEBUG("I'm the maestro, execute the simcall directly");
  37     SIMIX_simcall_enter(&self->simcall, 0);
  38   }
  39 }
  40
  41 void SIMIX_simcall_answer(smx_simcall_t simcall)
  42 {
  43   if (simcall->issuer != simix_global->maestro_process){
  44     XBT_DEBUG("Answer simcall %s (%d) issued by %s (%p)", SIMIX_simcall_name(simcall->call), (int)simcall->call,
  45         simcall->issuer->name, simcall->issuer);
  46     simcall->issuer->simcall.call = SIMCALL_NONE;
  47 /*    This check should be useless and slows everyone. Reactivate if you see something
  48  *    weird in process scheduling.
  49  */
  50 /*    if(!xbt_dynar_member(simix_global->process_to_run, &(simcall->issuer))) */
  51     xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, simcall->issuer);
  52 /*    else DIE_IMPOSSIBLE; */
  53   }
  54 }
  55
  56 void SIMIX_simcall_exit(smx_action_t action)
  57 {
  58   switch (action->type) {
  59
  60     case SIMIX_ACTION_EXECUTE:
  61     case SIMIX_ACTION_PARALLEL_EXECUTE:
  62       SIMIX_post_host_execute(action);
  63       break;
  64
  65     case SIMIX_ACTION_COMMUNICATE:
  66       SIMIX_post_comm(action);
  67       break;
  68
  69     case SIMIX_ACTION_SLEEP:
  70       SIMIX_post_process_sleep(action);
  71       break;
  72
  73     case SIMIX_ACTION_JOIN:
  74       SIMIX_post_process_sleep(action);
  75       break;
  76
  77     case SIMIX_ACTION_SYNCHRO:
  78       SIMIX_post_synchro(action);
  79       break;
  80
  81     case SIMIX_ACTION_IO:
  82       SIMIX_post_io(action);
  83       break;
  84
  85     /* ****************************************************************************************** */
  86     /* TUTORIAL: New API                                                                        */
  87     /* ****************************************************************************************** */
  88     case SIMIX_ACTION_NEW_API:
  89       SIMIX_post_new_api(action);
  90       break;
  91   }
  92 }