X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8c9fdae81e190f129167b276e1817256607bfe14..3203ed1f4fb6f4617e94d5351661ba07e8b8f833:/src/simix/smx_process.c?ds=sidebyside

diff --git a/src/simix/smx_process.c b/src/simix/smx_process.c
index 8d2320a51b..2fac9cf337 100644
--- a/src/simix/smx_process.c
+++ b/src/simix/smx_process.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2007-2014. The SimGrid Team.
+/* Copyright (c) 2007-2015. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -9,6 +9,8 @@
 #include "xbt/log.h"
 #include "xbt/dict.h"
 #include "mc/mc.h"
+#include "src/mc/mc_replay.h"
+#include "src/mc/mc_client.h"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_process, simix,
                                 "Logging specific to SIMIX (process)");
@@ -38,61 +40,67 @@ int SIMIX_process_has_pending_comms(smx_process_t process) {
   return xbt_fifo_size(process->comms) > 0;
 }
 
-void SIMIX_pre_process_cleanup(smx_simcall_t simcall, smx_process_t process) {
-  SIMIX_process_cleanup(process);
-}
 /**
  * \brief Moves a process to the list of processes to destroy.
  */
 void SIMIX_process_cleanup(smx_process_t process)
 {
-  XBT_DEBUG("Cleanup process %s (%p), waiting action %p",
-      process->name, process, process->waiting_action);
+  XBT_DEBUG("Cleanup process %s (%p), waiting synchro %p",
+      process->name, process, process->waiting_synchro);
 
   SIMIX_process_on_exit_runall(process);
 
+  /* Unregister from the kill timer if any */
+  if (process->kill_timer != NULL)
+	  SIMIX_timer_remove(process->kill_timer);
+
+  xbt_os_mutex_acquire(simix_global->mutex);
+
   /* cancel non-blocking communications */
-  smx_action_t action;
-  while ((action = xbt_fifo_pop(process->comms))) {
+  smx_synchro_t synchro;
+  while ((synchro = xbt_fifo_pop(process->comms))) {
 
     /* make sure no one will finish the comm after this process is destroyed,
      * because src_proc or dst_proc would be an invalid pointer */
-    SIMIX_comm_cancel(action);
+    SIMIX_comm_cancel(synchro);
 
-    if (action->comm.src_proc == process) {
+    if (synchro->comm.src_proc == process) {
       XBT_DEBUG("Found an unfinished send comm %p (detached = %d), state %d, src = %p, dst = %p",
-          action, action->comm.detached, (int)action->state, action->comm.src_proc, action->comm.dst_proc);
-      action->comm.src_proc = NULL;
+          synchro, synchro->comm.detached, (int)synchro->state, synchro->comm.src_proc, synchro->comm.dst_proc);
+      synchro->comm.src_proc = NULL;
 
       /* I'm not supposed to destroy a detached comm from the sender side, */
-      if (!action->comm.detached)
-        SIMIX_comm_destroy(action);
+      if (!synchro->comm.detached)
+        SIMIX_comm_destroy(synchro);
       else
         XBT_DEBUG("Don't destroy it since it's a detached comm");
 
     }
-    else if (action->comm.dst_proc == process){
+    else if (synchro->comm.dst_proc == process){
       XBT_DEBUG("Found an unfinished recv comm %p, state %d, src = %p, dst = %p",
-          action, (int)action->state, action->comm.src_proc, action->comm.dst_proc);
-      action->comm.dst_proc = NULL;
+          synchro, (int)synchro->state, synchro->comm.src_proc, synchro->comm.dst_proc);
+      synchro->comm.dst_proc = NULL;
 
-      if (action->comm.detached && action->comm.refcount == 1
-          && action->comm.src_proc != NULL) {
+      if (synchro->comm.detached && synchro->comm.refcount == 1
+          && synchro->comm.src_proc != NULL) {
         /* the comm will be freed right now, remove it from the sender */
-        xbt_fifo_remove(action->comm.src_proc->comms, action);
+        xbt_fifo_remove(synchro->comm.src_proc->comms, synchro);
       }
-      SIMIX_comm_destroy(action);
+      SIMIX_comm_destroy(synchro);
     }
     else {
-      xbt_die("Communication action %p is in my list but I'm not the sender "
-          "or the receiver", action);
+      xbt_die("Communication synchro %p is in my list but I'm not the sender "
+          "or the receiver", synchro);
     }
   }
 
+  XBT_DEBUG("%p should not be run anymore",process);
   xbt_swag_remove(process, simix_global->process_list);
-  xbt_swag_remove(process, SIMIX_host_priv(process->smx_host)->process_list);
+  xbt_swag_remove(process, sg_host_simix(process->host)->process_list);
   xbt_swag_insert(process, simix_global->process_to_destroy);
   process->context->iwannadie = 0;
+
+  xbt_os_mutex_release(simix_global->mutex);
 }
 
 /**
@@ -106,6 +114,8 @@ void SIMIX_process_empty_trash(void)
   smx_process_t process = NULL;
 
   while ((process = xbt_swag_extract(simix_global->process_to_destroy))) {
+    XBT_DEBUG("Getting rid of %p",process);
+
     SIMIX_context_free(process->context);
 
     /* Free the exception allocated at creation time */
@@ -153,14 +163,14 @@ void SIMIX_process_stop(smx_process_t arg) {
   /* Add the process to the list of process to restart, only if
    * the host is down
    */
-  if (arg->auto_restart && !SIMIX_host_get_state(arg->smx_host)) {
-    SIMIX_host_add_auto_restart_process(arg->smx_host,arg->name,arg->code, arg->data,
-                                        sg_host_name(arg->smx_host),
-                                        arg->kill_time,
+  if (arg->auto_restart && !SIMIX_host_get_state(arg->host)) {
+    SIMIX_host_add_auto_restart_process(arg->host,arg->name,arg->code, arg->data,
+                                        sg_host_name(arg->host),
+                                        SIMIX_timer_get_date(arg->kill_timer),
                                         arg->argc,arg->argv,arg->properties,
                                         arg->auto_restart);
   }
-  XBT_DEBUG("Process %s (%s) is dead",arg->name,sg_host_name(arg->smx_host));
+  XBT_DEBUG("Process %s (%s) is dead",arg->name,sg_host_name(arg->host));
   /* stop the context */
   SIMIX_context_stop(arg->context);
 }
@@ -172,8 +182,7 @@ void SIMIX_process_stop(smx_process_t arg) {
  */
 smx_process_t SIMIX_process_create_from_wrapper(smx_process_arg_t args) {
 
-  smx_process_t process;
-  simix_global->create_process_function(&process,
+  smx_process_t process = simix_global->create_process_function(
                                         args->name,
                                         args->code,
                                         args->data,
@@ -189,8 +198,7 @@ smx_process_t SIMIX_process_create_from_wrapper(smx_process_arg_t args) {
 }
 
 
-void SIMIX_pre_process_create(smx_simcall_t simcall,
-		          smx_process_t *process,
+void* simcall_HANDLER_process_create(smx_simcall_t simcall,
                           const char *name,
                           xbt_main_func_t code,
                           void *data,
@@ -199,7 +207,7 @@ void SIMIX_pre_process_create(smx_simcall_t simcall,
                           int argc, char **argv,
                           xbt_dict_t properties,
                           int auto_restart){
-  SIMIX_process_create(process, name, code, data, hostname,
+  return (void*)SIMIX_process_create(name, code, data, hostname,
                        kill_time, argc, argv, properties, auto_restart,
                        simcall->issuer);
 }
@@ -212,7 +220,7 @@ void SIMIX_pre_process_create(smx_simcall_t simcall,
  *
  * \return the process created
  */
-void SIMIX_process_create(smx_process_t *process,
+smx_process_t SIMIX_process_create(
                           const char *name,
                           xbt_main_func_t code,
                           void *data,
@@ -223,8 +231,8 @@ void SIMIX_process_create(smx_process_t *process,
                           int auto_restart,
                           smx_process_t parent_process)
 {
-  *process = NULL;
-  smx_host_t host = SIMIX_host_get_by_name(hostname);
+  smx_process_t process = NULL;
+  sg_host_t host = sg_host_by_name(hostname);
 
   XBT_DEBUG("Start process %s on host '%s'", name, hostname);
 
@@ -237,61 +245,60 @@ void SIMIX_process_create(smx_process_t *process,
     xbt_free(argv);
   }
   else {
-    *process = xbt_new0(s_smx_process_t, 1);
+    process = xbt_new0(s_smx_process_t, 1);
 
     xbt_assert(((code != NULL) && (host != NULL)), "Invalid parameters");
     /* Process data */
-    (*process)->pid = simix_process_maxpid++;
-    (*process)->name = xbt_strdup(name);
-    (*process)->smx_host = host;
-    (*process)->data = data;
-    (*process)->comms = xbt_fifo_new();
-    (*process)->simcall.issuer = *process;
+    process->pid = simix_process_maxpid++;
+    process->name = xbt_strdup(name);
+    process->host = host;
+    process->data = data;
+    process->comms = xbt_fifo_new();
+    process->simcall.issuer = process;
 
      if (parent_process) {
-       (*process)->ppid = SIMIX_process_get_PID(parent_process);
+       process->ppid = SIMIX_process_get_PID(parent_process);
      } else {
-       (*process)->ppid = -1;
+       process->ppid = -1;
      }
 
     /* Process data for auto-restart */
-    (*process)->auto_restart = auto_restart;
-    (*process)->code = code;
-    (*process)->argc = argc;
-    (*process)->argv = argv;
-    (*process)->kill_time = kill_time;
+    process->auto_restart = auto_restart;
+    process->code = code;
+    process->argc = argc;
+    process->argv = argv;
 
 
-    XBT_VERB("Create context %s", (*process)->name);
-    (*process)->context = SIMIX_context_new(code, argc, argv,
-      simix_global->cleanup_process_function, *process);
+    XBT_VERB("Create context %s", process->name);
+    process->context = SIMIX_context_new(code, argc, argv, simix_global->cleanup_process_function, process);
 
-    (*process)->running_ctx = xbt_new(xbt_running_ctx_t, 1);
-    XBT_RUNNING_CTX_INITIALIZE((*process)->running_ctx);
+    process->running_ctx = xbt_new(xbt_running_ctx_t, 1);
+    XBT_RUNNING_CTX_INITIALIZE(process->running_ctx);
 
     if(MC_is_active()){
-      MC_ignore_heap((*process)->running_ctx, sizeof(*(*process)->running_ctx));
+      MC_ignore_heap(process->running_ctx, sizeof(*process->running_ctx));
     }
 
     /* Add properties */
-    (*process)->properties = properties;
+    process->properties = properties;
 
     /* Add the process to it's host process list */
-    xbt_swag_insert(*process, SIMIX_host_priv(host)->process_list);
+    xbt_swag_insert(process, sg_host_simix(host)->process_list);
 
-    XBT_DEBUG("Start context '%s'", (*process)->name);
+    XBT_DEBUG("Start context '%s'", process->name);
 
     /* Now insert it in the global process list and in the process to run list */
-    xbt_swag_insert(*process, simix_global->process_list);
-    XBT_DEBUG("Inserting %s(%s) in the to_run list", (*process)->name, sg_host_name(host));
-    xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, *process);
+    xbt_swag_insert(process, simix_global->process_list);
+    XBT_DEBUG("Inserting %s(%s) in the to_run list", process->name, sg_host_name(host));
+    xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
 
     if (kill_time > SIMIX_get_clock() && simix_global->kill_process_function) {
-      XBT_DEBUG("Process %s(%s) will be kill at time %f", (*process)->name,
-          sg_host_name((*process)->smx_host), kill_time);
-      SIMIX_timer_set(kill_time, simix_global->kill_process_function, *process);
+      XBT_DEBUG("Process %s(%s) will be kill at time %f", process->name,
+          sg_host_name(process->host), kill_time);
+      process->kill_timer = SIMIX_timer_set(kill_time, simix_global->kill_process_function, process);
     }
   }
+  return process;
 }
 
 /**
@@ -313,7 +320,7 @@ void SIMIX_process_runall(void)
   xbt_dynar_reset(simix_global->process_to_run);
 }
 
-void SIMIX_pre_process_kill(smx_simcall_t simcall, smx_process_t process) {
+void simcall_HANDLER_process_kill(smx_simcall_t simcall, smx_process_t process) {
   SIMIX_process_kill(process, simcall->issuer);
 }
 /**
@@ -327,62 +334,109 @@ void SIMIX_pre_process_kill(smx_simcall_t simcall, smx_process_t process) {
  */
 void SIMIX_process_kill(smx_process_t process, smx_process_t issuer) {
 
-  XBT_DEBUG("Killing process %s on %s", process->name, sg_host_name(process->smx_host));
+  XBT_DEBUG("Killing process %s on %s", process->name, sg_host_name(process->host));
 
   process->context->iwannadie = 1;
   process->blocked = 0;
   process->suspended = 0;
-  /* FIXME: set doexception to 0 also? */
+  process->doexception = 0;
 
-  /* destroy the blocking action if any */
-  if (process->waiting_action) {
+  /* destroy the blocking synchro if any */
+  if (process->waiting_synchro) {
 
-    switch (process->waiting_action->type) {
+    switch (process->waiting_synchro->type) {
 
-    case SIMIX_ACTION_EXECUTE:
-    case SIMIX_ACTION_PARALLEL_EXECUTE:
-      SIMIX_host_execution_destroy(process->waiting_action);
+    case SIMIX_SYNC_EXECUTE:
+    case SIMIX_SYNC_PARALLEL_EXECUTE:
+      SIMIX_process_execution_destroy(process->waiting_synchro);
       break;
 
-    case SIMIX_ACTION_COMMUNICATE:
-      xbt_fifo_remove(process->comms, process->waiting_action);
-      SIMIX_comm_cancel(process->waiting_action);
-      SIMIX_comm_destroy(process->waiting_action);
+    case SIMIX_SYNC_COMMUNICATE:
+      xbt_fifo_remove(process->comms, process->waiting_synchro);
+      SIMIX_comm_cancel(process->waiting_synchro);
+      xbt_fifo_remove(process->waiting_synchro->simcalls, &process->simcall);
+      SIMIX_comm_destroy(process->waiting_synchro);
       break;
 
-    case SIMIX_ACTION_SLEEP:
-      SIMIX_process_sleep_destroy(process->waiting_action);
+    case SIMIX_SYNC_SLEEP:
+      SIMIX_process_sleep_destroy(process->waiting_synchro);
       break;
 
-    case SIMIX_ACTION_JOIN:
-      SIMIX_process_sleep_destroy(process->waiting_action);
+    case SIMIX_SYNC_JOIN:
+      SIMIX_process_sleep_destroy(process->waiting_synchro);
       break;
 
-    case SIMIX_ACTION_SYNCHRO:
+    case SIMIX_SYNC_SYNCHRO:
       SIMIX_synchro_stop_waiting(process, &process->simcall);
-      SIMIX_synchro_destroy(process->waiting_action);
-      break;
-
-    case SIMIX_ACTION_IO:
-      SIMIX_io_destroy(process->waiting_action);
+      SIMIX_synchro_destroy(process->waiting_synchro);
       break;
 
-      /* **************************************/
-      /* TUTORIAL: New API                    */
-    case SIMIX_ACTION_NEW_API:
-      SIMIX_new_api_destroy(process->waiting_action);
+    case SIMIX_SYNC_IO:
+      SIMIX_io_destroy(process->waiting_synchro);
       break;
-      /* **************************************/
 
     }
+
+    process->waiting_synchro = NULL;
   }
   if(!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != issuer) {
+    XBT_DEBUG("Inserting %s in the to_run list", process->name);
     xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
   }
 
 }
 
-void SIMIX_pre_process_killall(smx_simcall_t simcall, int reset_pid) {
+/** @brief Ask another process to raise the given exception
+ *
+ * @param cat category of exception
+ * @param value value associated to the exception
+ * @param msg string information associated to the exception
+ */
+void SIMIX_process_throw(smx_process_t process, xbt_errcat_t cat, int value, const char *msg) {
+  SMX_EXCEPTION(process, cat, value, msg);
+
+  if (process->suspended)
+    SIMIX_process_resume(process,SIMIX_process_self());
+
+  /* cancel the blocking synchro if any */
+  if (process->waiting_synchro) {
+
+    switch (process->waiting_synchro->type) {
+
+    case SIMIX_SYNC_EXECUTE:
+    case SIMIX_SYNC_PARALLEL_EXECUTE:
+      SIMIX_process_execution_cancel(process->waiting_synchro);
+      break;
+
+    case SIMIX_SYNC_COMMUNICATE:
+      xbt_fifo_remove(process->comms, process->waiting_synchro);
+      SIMIX_comm_cancel(process->waiting_synchro);
+      break;
+
+    case SIMIX_SYNC_SLEEP:
+    case SIMIX_SYNC_JOIN:
+      SIMIX_process_sleep_destroy(process->waiting_synchro);
+      if (!xbt_dynar_member(simix_global->process_to_run, &(process)) && process != SIMIX_process_self()) {
+        XBT_DEBUG("Inserting %s in the to_run list", process->name);
+        xbt_dynar_push_as(simix_global->process_to_run, smx_process_t, process);
+      }
+      break;
+
+    case SIMIX_SYNC_SYNCHRO:
+      SIMIX_synchro_stop_waiting(process, &process->simcall);
+      break;
+
+    case SIMIX_SYNC_IO:
+      SIMIX_io_destroy(process->waiting_synchro);
+      break;
+
+    }
+  }
+  process->waiting_synchro = NULL;
+
+}
+
+void simcall_HANDLER_process_killall(smx_simcall_t simcall, int reset_pid) {
   SIMIX_process_killall(simcall->issuer, reset_pid);
 }
 /**
@@ -407,37 +461,36 @@ void SIMIX_process_killall(smx_process_t issuer, int reset_pid)
   SIMIX_process_empty_trash();
 }
 
-void SIMIX_pre_process_change_host(smx_simcall_t simcall, smx_process_t process,
-		                   smx_host_t dest)
+void simcall_HANDLER_process_set_host(smx_simcall_t simcall, smx_process_t process, sg_host_t dest)
 {
   process->new_host = dest;
 }
 void SIMIX_process_change_host(smx_process_t process,
-             smx_host_t dest)
+             sg_host_t dest)
 {
   xbt_assert((process != NULL), "Invalid parameters");
-  xbt_swag_remove(process, SIMIX_host_priv(process->smx_host)->process_list);
-  process->smx_host = dest;
-  xbt_swag_insert(process, SIMIX_host_priv(dest)->process_list);
+  xbt_swag_remove(process, sg_host_simix(process->host)->process_list);
+  process->host = dest;
+  xbt_swag_insert(process, sg_host_simix(dest)->process_list);
 }
 
 
-void SIMIX_pre_process_suspend(smx_simcall_t simcall, smx_process_t process)
+void simcall_HANDLER_process_suspend(smx_simcall_t simcall, smx_process_t process)
 {
-  smx_action_t action_suspend =
+  smx_synchro_t sync_suspend =
       SIMIX_process_suspend(process, simcall->issuer);
 
   if (process != simcall->issuer) {
     SIMIX_simcall_answer(simcall);
   } else {
-    xbt_fifo_push(action_suspend->simcalls, simcall);
-    process->waiting_action = action_suspend;
-    SIMIX_host_execution_suspend(process->waiting_action);
+    xbt_fifo_push(sync_suspend->simcalls, simcall);
+    process->waiting_synchro = sync_suspend;
+    SIMIX_host_execution_suspend(process->waiting_synchro);
   }
   /* If we are suspending ourselves, then just do not finish the simcall now */
 }
 
-smx_action_t SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
+smx_synchro_t SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
 {
   xbt_assert((process != NULL), "Invalid parameters");
 
@@ -448,34 +501,34 @@ smx_action_t SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
 
   process->suspended = 1;
 
-  /* If we are suspending another process, and it is waiting on an action,
-     suspend its action. */
+  /* If we are suspending another process, and it is waiting on a sync,
+     suspend its synchronization. */
   if (process != issuer) {
 
-    if (process->waiting_action) {
+    if (process->waiting_synchro) {
 
-      switch (process->waiting_action->type) {
+      switch (process->waiting_synchro->type) {
 
-        case SIMIX_ACTION_EXECUTE:
-        case SIMIX_ACTION_PARALLEL_EXECUTE:
-          SIMIX_host_execution_suspend(process->waiting_action);
+        case SIMIX_SYNC_EXECUTE:
+        case SIMIX_SYNC_PARALLEL_EXECUTE:
+          SIMIX_host_execution_suspend(process->waiting_synchro);
           break;
 
-        case SIMIX_ACTION_COMMUNICATE:
-          SIMIX_comm_suspend(process->waiting_action);
+        case SIMIX_SYNC_COMMUNICATE:
+          SIMIX_comm_suspend(process->waiting_synchro);
           break;
 
-        case SIMIX_ACTION_SLEEP:
-          SIMIX_process_sleep_suspend(process->waiting_action);
+        case SIMIX_SYNC_SLEEP:
+          SIMIX_process_sleep_suspend(process->waiting_synchro);
           break;
 
-        case SIMIX_ACTION_SYNCHRO:
+        case SIMIX_SYNC_SYNCHRO:
           /* Suspension is delayed to when the process is rescheduled. */
           break;
 
         default:
-          xbt_die("Internal error in SIMIX_process_suspend: unexpected action type %d",
-              (int)process->waiting_action->type);
+          xbt_die("Internal error in SIMIX_process_suspend: unexpected synchronization type %d",
+              (int)process->waiting_synchro->type);
       }
       return NULL;
     } else {
@@ -484,18 +537,16 @@ smx_action_t SIMIX_process_suspend(smx_process_t process, smx_process_t issuer)
     }
   } else {
     /* FIXME: computation size is zero. Is it okay that bound is zero ? */
-    return SIMIX_host_execute("suspend", process->smx_host, 0.0, 1.0, 0.0, 0);
+    return SIMIX_process_execute(process, "suspend", 0.0, 1.0, 0.0, 0);
   }
 }
 
-void SIMIX_pre_process_resume(smx_simcall_t simcall, smx_process_t process){
+void simcall_HANDLER_process_resume(smx_simcall_t simcall, smx_process_t process){
   SIMIX_process_resume(process, simcall->issuer);
 }
 
 void SIMIX_process_resume(smx_process_t process, smx_process_t issuer)
 {
-  xbt_assert((process != NULL), "Invalid parameters");
-
   XBT_IN("process = %p, issuer = %p", process, issuer);
 
   if(process->context->iwannadie) {
@@ -506,35 +557,35 @@ void SIMIX_process_resume(smx_process_t process, smx_process_t issuer)
   if(!process->suspended) return;
   process->suspended = 0;
 
-  /* If we are resuming another process, resume the action it was waiting for
+  /* If we are resuming another process, resume the synchronization it was waiting for
      if any. Otherwise add it to the list of process to run in the next round. */
   if (process != issuer) {
 
-    if (process->waiting_action) {
+    if (process->waiting_synchro) {
 
-      switch (process->waiting_action->type) {
+      switch (process->waiting_synchro->type) {
 
-        case SIMIX_ACTION_EXECUTE:
-        case SIMIX_ACTION_PARALLEL_EXECUTE:
-          SIMIX_host_execution_resume(process->waiting_action);
+        case SIMIX_SYNC_EXECUTE:
+        case SIMIX_SYNC_PARALLEL_EXECUTE:
+          SIMIX_host_execution_resume(process->waiting_synchro);
           break;
 
-        case SIMIX_ACTION_COMMUNICATE:
-          SIMIX_comm_resume(process->waiting_action);
+        case SIMIX_SYNC_COMMUNICATE:
+          SIMIX_comm_resume(process->waiting_synchro);
           break;
 
-        case SIMIX_ACTION_SLEEP:
-          SIMIX_process_sleep_resume(process->waiting_action);
+        case SIMIX_SYNC_SLEEP:
+          SIMIX_process_sleep_resume(process->waiting_synchro);
           break;
 
-        case SIMIX_ACTION_SYNCHRO:
+        case SIMIX_SYNC_SYNCHRO:
           /* I cannot resume it now. This is delayed to when the process is rescheduled at
            * the end of the synchro. */
           break;
 
         default:
-          xbt_die("Internal error in SIMIX_process_resume: unexpected action type %d",
-              (int)process->waiting_action->type);
+          xbt_die("Internal error in SIMIX_process_resume: unexpected synchronization type %d",
+              (int)process->waiting_synchro->type);
       }
     }
   } else XBT_WARN("Strange. Process %p is trying to resume himself.", issuer);
@@ -546,18 +597,11 @@ int SIMIX_process_get_maxpid(void) {
   return simix_process_maxpid;
 }
 
-int SIMIX_pre_process_count(smx_simcall_t simcall){
-  return SIMIX_process_count();
-}
 int SIMIX_process_count(void)
 {
   return xbt_swag_size(simix_global->process_list);
 }
 
-int SIMIX_pre_process_get_PID(smx_simcall_t simcall, smx_process_t self){
-   return SIMIX_process_get_PID(self);
-}
-
 int SIMIX_process_get_PID(smx_process_t self){
   if (self == NULL)
     return 0;
@@ -565,10 +609,6 @@ int SIMIX_process_get_PID(smx_process_t self){
     return self->pid;
 }
 
-int SIMIX_pre_process_get_PPID(smx_simcall_t simcall, smx_process_t self){
-  return SIMIX_process_get_PPID(self);
-}
-
 int SIMIX_process_get_PPID(smx_process_t self){
   if (self == NULL)
     return 0;
@@ -576,10 +616,6 @@ int SIMIX_process_get_PPID(smx_process_t self){
     return self->ppid;
 }
 
-void* SIMIX_pre_process_self_get_data(smx_simcall_t simcall, smx_process_t self){
-  return SIMIX_process_self_get_data(self);
-}
-
 void* SIMIX_process_self_get_data(smx_process_t self)
 {
   xbt_assert(self == SIMIX_process_self(), "This is not the current process");
@@ -590,10 +626,6 @@ void* SIMIX_process_self_get_data(smx_process_t self)
   return SIMIX_process_get_data(self);
 }
 
-void SIMIX_pre_process_set_data(smx_simcall_t simcall, smx_process_t process,
-                                void *data){
-  SIMIX_process_set_data(process, data);
-}
 void SIMIX_process_self_set_data(smx_process_t self, void *data)
 {
   xbt_assert(self == SIMIX_process_self(), "This is not the current process");
@@ -601,9 +633,6 @@ void SIMIX_process_self_set_data(smx_process_t self, void *data)
   SIMIX_process_set_data(self, data);
 }
 
-void* SIMIX_pre_process_get_data(smx_simcall_t simcall, smx_process_t process){
-  return SIMIX_process_get_data(process);
-}
 void* SIMIX_process_get_data(smx_process_t process)
 {
   return process->data;
@@ -614,12 +643,9 @@ void SIMIX_process_set_data(smx_process_t process, void *data)
   process->data = data;
 }
 
-smx_host_t SIMIX_pre_process_get_host(smx_simcall_t simcall, smx_process_t process){
-  return SIMIX_process_get_host(process);
-}
-smx_host_t SIMIX_process_get_host(smx_process_t process)
+sg_host_t SIMIX_process_get_host(smx_process_t process)
 {
-  return process->smx_host;
+  return process->host;
 }
 
 /* needs to be public and without simcall because it is called
@@ -633,9 +659,6 @@ const char* SIMIX_process_self_get_name(void) {
   return SIMIX_process_get_name(process);
 }
 
-const char* SIMIX_pre_process_get_name(smx_simcall_t simcall, smx_process_t process) {
-  return SIMIX_process_get_name(process);
-}
 const char* SIMIX_process_get_name(smx_process_t process)
 {
   return process->name;
@@ -653,110 +676,101 @@ smx_process_t SIMIX_process_get_by_name(const char* name)
   return NULL;
 }
 
-int SIMIX_pre_process_is_suspended(smx_simcall_t simcall, smx_process_t process){
-  return SIMIX_process_is_suspended(process);
-}
 int SIMIX_process_is_suspended(smx_process_t process)
 {
   return process->suspended;
 }
 
-xbt_dict_t SIMIX_pre_process_get_properties(smx_simcall_t simcall, smx_process_t process){
-  return SIMIX_process_get_properties(process);
-}
 xbt_dict_t SIMIX_process_get_properties(smx_process_t process)
 {
   return process->properties;
 }
 
-void SIMIX_pre_process_join(smx_simcall_t simcall, smx_process_t process, double timeout)
+void simcall_HANDLER_process_join(smx_simcall_t simcall, smx_process_t process, double timeout)
 {
-  smx_action_t action = SIMIX_process_join(simcall->issuer, process, timeout);
-  xbt_fifo_push(action->simcalls, simcall);
-  simcall->issuer->waiting_action = action;
+  smx_synchro_t sync = SIMIX_process_join(simcall->issuer, process, timeout);
+  xbt_fifo_push(sync->simcalls, simcall);
+  simcall->issuer->waiting_synchro = sync;
 }
 
-static int SIMIX_process_join_finish(smx_process_exit_status_t status, smx_action_t action){
-  if (action->sleep.surf_sleep) {
-    surf_action_cancel(action->sleep.surf_sleep);
+static int SIMIX_process_join_finish(smx_process_exit_status_t status, smx_synchro_t sync){
+  if (sync->sleep.surf_sleep) {
+    surf_action_cancel(sync->sleep.surf_sleep);
 
     smx_simcall_t simcall;
-    while ((simcall = xbt_fifo_shift(action->simcalls))) {
+    while ((simcall = xbt_fifo_shift(sync->simcalls))) {
       simcall_process_sleep__set__result(simcall, SIMIX_DONE);
-      simcall->issuer->waiting_action = NULL;
+      simcall->issuer->waiting_synchro = NULL;
       if (simcall->issuer->suspended) {
         XBT_DEBUG("Wait! This process is suspended and can't wake up now.");
         simcall->issuer->suspended = 0;
-        SIMIX_pre_process_suspend(simcall, simcall->issuer);
+        simcall_HANDLER_process_suspend(simcall, simcall->issuer);
       } else {
         SIMIX_simcall_answer(simcall);
       }
     }
-    surf_action_unref(action->sleep.surf_sleep);
-    action->sleep.surf_sleep = NULL;
+    surf_action_unref(sync->sleep.surf_sleep);
+    sync->sleep.surf_sleep = NULL;
   }
-  xbt_mallocator_release(simix_global->action_mallocator, action);
+  xbt_mallocator_release(simix_global->synchro_mallocator, sync);
   return 0;
 }
 
-smx_action_t SIMIX_process_join(smx_process_t issuer, smx_process_t process, double timeout)
+smx_synchro_t SIMIX_process_join(smx_process_t issuer, smx_process_t process, double timeout)
 {
-  smx_action_t res = SIMIX_process_sleep(issuer, timeout);
-  res->type = SIMIX_ACTION_JOIN;
+  smx_synchro_t res = SIMIX_process_sleep(issuer, timeout);
+  res->type = SIMIX_SYNC_JOIN;
   SIMIX_process_on_exit(process, (int_f_pvoid_pvoid_t)SIMIX_process_join_finish, res);
   return res;
 }
 
-void SIMIX_pre_process_sleep(smx_simcall_t simcall, double duration)
+void simcall_HANDLER_process_sleep(smx_simcall_t simcall, double duration)
 {
-  if (MC_is_active()) {
+  if (MC_is_active() || MC_record_replay_is_active()) {
     MC_process_clock_add(simcall->issuer, duration);
     simcall_process_sleep__set__result(simcall, SIMIX_DONE);
     SIMIX_simcall_answer(simcall);
     return;
   }
-  smx_action_t action = SIMIX_process_sleep(simcall->issuer, duration);
-  xbt_fifo_push(action->simcalls, simcall);
-  simcall->issuer->waiting_action = action;
+  smx_synchro_t sync = SIMIX_process_sleep(simcall->issuer, duration);
+  xbt_fifo_push(sync->simcalls, simcall);
+  simcall->issuer->waiting_synchro = sync;
 }
 
-smx_action_t SIMIX_process_sleep(smx_process_t process, double duration)
+smx_synchro_t SIMIX_process_sleep(smx_process_t process, double duration)
 {
-  smx_action_t action;
-  smx_host_t host = process->smx_host;
+  smx_synchro_t synchro;
+  sg_host_t host = process->host;
 
   /* check if the host is active */
-  if (surf_resource_get_state(surf_workstation_resource_priv(host)) != SURF_RESOURCE_ON) {
+  if (surf_host_get_state(surf_host_resource_priv(host)) != SURF_RESOURCE_ON) {
     THROWF(host_error, 0, "Host %s failed, you cannot call this function",
            sg_host_name(host));
   }
 
-  action = xbt_mallocator_get(simix_global->action_mallocator);
-  action->type = SIMIX_ACTION_SLEEP;
-  action->name = NULL;
-#ifdef HAVE_TRACING
-  action->category = NULL;
-#endif
+  synchro = xbt_mallocator_get(simix_global->synchro_mallocator);
+  synchro->type = SIMIX_SYNC_SLEEP;
+  synchro->name = NULL;
+  synchro->category = NULL;
 
-  action->sleep.host = host;
-  action->sleep.surf_sleep =
-      surf_workstation_sleep(host, duration);
+  synchro->sleep.host = host;
+  synchro->sleep.surf_sleep = surf_host_sleep(host, duration);
 
-  surf_action_set_data(action->sleep.surf_sleep, action);
-  XBT_DEBUG("Create sleep action %p", action);
+  surf_action_set_data(synchro->sleep.surf_sleep, synchro);
+  XBT_DEBUG("Create sleep synchronization %p", synchro);
 
-  return action;
+  return synchro;
 }
 
-void SIMIX_post_process_sleep(smx_action_t action)
+void SIMIX_post_process_sleep(smx_synchro_t synchro)
 {
   smx_simcall_t simcall;
   e_smx_state_t state;
-  xbt_assert(action->type == SIMIX_ACTION_SLEEP || action->type == SIMIX_ACTION_JOIN);
+  xbt_assert(synchro->type == SIMIX_SYNC_SLEEP || synchro->type == SIMIX_SYNC_JOIN);
 
-  while ((simcall = xbt_fifo_shift(action->simcalls))) {
+  while ((simcall = xbt_fifo_shift(synchro->simcalls))) {
 
-    switch(surf_action_get_state(action->sleep.surf_sleep)){
+    switch(surf_action_get_state(synchro->sleep.surf_sleep)){
       case SURF_ACTION_FAILED:
         simcall->issuer->context->iwannadie = 1;
         //SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
@@ -771,47 +785,47 @@ void SIMIX_post_process_sleep(smx_action_t action)
         THROW_IMPOSSIBLE;
         break;
     }
-    if (surf_resource_get_state(surf_workstation_resource_priv(simcall->issuer->smx_host)) != SURF_RESOURCE_ON) {
+    if (surf_host_get_state(surf_host_resource_priv(simcall->issuer->host)) != SURF_RESOURCE_ON) {
       simcall->issuer->context->iwannadie = 1;
     }
     simcall_process_sleep__set__result(simcall, state);
-    simcall->issuer->waiting_action = NULL;
+    simcall->issuer->waiting_synchro = NULL;
     if (simcall->issuer->suspended) {
       XBT_DEBUG("Wait! This process is suspended and can't wake up now.");
       simcall->issuer->suspended = 0;
-      SIMIX_pre_process_suspend(simcall, simcall->issuer);
+      simcall_HANDLER_process_suspend(simcall, simcall->issuer);
     } else {
       SIMIX_simcall_answer(simcall);
     }
   }
 
-  SIMIX_process_sleep_destroy(action);
+  SIMIX_process_sleep_destroy(synchro);
 }
 
-void SIMIX_process_sleep_destroy(smx_action_t action)
+void SIMIX_process_sleep_destroy(smx_synchro_t synchro)
 {
-  XBT_DEBUG("Destroy action %p", action);
-  xbt_assert(action->type == SIMIX_ACTION_SLEEP || action->type == SIMIX_ACTION_JOIN);
+  XBT_DEBUG("Destroy synchro %p", synchro);
+  xbt_assert(synchro->type == SIMIX_SYNC_SLEEP || synchro->type == SIMIX_SYNC_JOIN);
 
-  if (action->sleep.surf_sleep) {
-    surf_action_unref(action->sleep.surf_sleep);
-    action->sleep.surf_sleep = NULL;
+  if (synchro->sleep.surf_sleep) {
+    surf_action_unref(synchro->sleep.surf_sleep);
+    synchro->sleep.surf_sleep = NULL;
   }
-  if (action->type == SIMIX_ACTION_SLEEP)
-    xbt_mallocator_release(simix_global->action_mallocator, action);
+  if (synchro->type == SIMIX_SYNC_SLEEP)
+    xbt_mallocator_release(simix_global->synchro_mallocator, synchro);
 }
 
-void SIMIX_process_sleep_suspend(smx_action_t action)
+void SIMIX_process_sleep_suspend(smx_synchro_t synchro)
 {
-  xbt_assert(action->type == SIMIX_ACTION_SLEEP);
-  surf_action_suspend(action->sleep.surf_sleep);
+  xbt_assert(synchro->type == SIMIX_SYNC_SLEEP);
+  surf_action_suspend(synchro->sleep.surf_sleep);
 }
 
-void SIMIX_process_sleep_resume(smx_action_t action)
+void SIMIX_process_sleep_resume(smx_synchro_t synchro)
 {
-  XBT_DEBUG("Action state is %d on process_sleep_resume.", action->state);
-  xbt_assert(action->type == SIMIX_ACTION_SLEEP);
-  surf_action_resume(action->sleep.surf_sleep);
+  XBT_DEBUG("Synchro state is %d on process_sleep_resume.", synchro->state);
+  xbt_assert(synchro->type == SIMIX_SYNC_SLEEP);
+  surf_action_resume(synchro->sleep.surf_sleep);
 }
 
 /**
@@ -844,7 +858,7 @@ void SIMIX_process_yield(smx_process_t self)
 
   if (self->suspended) {
     XBT_DEBUG("Hey! I'm suspended.");
-    xbt_assert(!self->doexception, "Gloups! This exception may be lost by subsequent calls.");
+    xbt_assert(!self->doexception, "Gasp! This exception may be lost by subsequent calls.");
     self->suspended = 0;
     SIMIX_process_suspend(self, self);
   }
@@ -921,11 +935,6 @@ void SIMIX_process_on_exit_runall(smx_process_t process) {
   }
 }
 
-void SIMIX_pre_process_on_exit(smx_simcall_t simcall, smx_process_t process,
-	                       int_f_pvoid_pvoid_t fun, void *data) {
-  SIMIX_process_on_exit(process, fun, data);
-}
-
 void SIMIX_process_on_exit(smx_process_t process, int_f_pvoid_pvoid_t fun, void *data) {
   xbt_assert(process, "current process not found: are you in maestro context ?");
 
@@ -938,10 +947,6 @@ void SIMIX_process_on_exit(smx_process_t process, int_f_pvoid_pvoid_t fun, void
   xbt_dynar_push_as(process->on_exit,s_smx_process_exit_fun_t,exit_fun);
 }
 
-void SIMIX_pre_process_auto_restart_set(smx_simcall_t simcall, smx_process_t process,
-		                        int auto_restart) {
-  SIMIX_process_auto_restart_set(process, auto_restart);
-}
 /**
  * \brief Sets the auto-restart status of the process.
  * If set to 1, the process will be automatically restarted when its host
@@ -951,21 +956,18 @@ void SIMIX_process_auto_restart_set(smx_process_t process, int auto_restart) {
   process->auto_restart = auto_restart;
 }
 
-smx_process_t SIMIX_pre_process_restart(smx_simcall_t simcall, smx_process_t process) {
+smx_process_t simcall_HANDLER_process_restart(smx_simcall_t simcall, smx_process_t process) {
   return SIMIX_process_restart(process, simcall->issuer);
 }
-/**
- * \brief Restart a process.
- * Restart a process, starting it again from the beginning.
- */
+/** @brief Restart a process, starting it again from the beginning. */
 smx_process_t SIMIX_process_restart(smx_process_t process, smx_process_t issuer) {
-  XBT_DEBUG("Restarting process %s on %s", process->name, sg_host_name(process->smx_host));
+  XBT_DEBUG("Restarting process %s on %s", process->name, sg_host_name(process->host));
   //retrieve the arguments of the old process
-  //FIXME: Factorise this with SIMIX_host_add_auto_restart_process ?
+  //FIXME: Factorize this with SIMIX_host_add_auto_restart_process ?
   s_smx_process_arg_t arg;
   arg.code = process->code;
-  arg.hostname = sg_host_name(process->smx_host);
-  arg.kill_time = process->kill_time;
+  arg.hostname = sg_host_name(process->host);
+  arg.kill_time = SIMIX_timer_get_date(process->kill_timer);
   arg.argc = process->argc;
   arg.data = process->data;
   int i;
@@ -981,7 +983,7 @@ smx_process_t SIMIX_process_restart(smx_process_t process, smx_process_t issuer)
   //start the new process
   smx_process_t new_process;
   if (simix_global->create_process_function) {
-    simix_global->create_process_function(&new_process,
+    new_process = simix_global->create_process_function(
                                           arg.argv[0],
                                           arg.code,
                                           arg.data,
@@ -993,7 +995,7 @@ smx_process_t SIMIX_process_restart(smx_process_t process, smx_process_t issuer)
                                           arg.auto_restart,
                                           NULL);
   } else {
-    simcall_process_create(&new_process,
+    new_process = simcall_process_create(
                            arg.argv[0],
                            arg.code,
                            arg.data,