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Chasing more leaks.
[simgrid.git] / src / simix / smx_host.c
index a85b8ff..2480bbd 100644 (file)
@@ -1,10 +1,10 @@
-/* Copyright (c) 2007, 2008, 2009, 2010. The SimGrid Team.
+/* Copyright (c) 2007-2013. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
-#include "private.h"
+#include "smx_private.h"
 #include "xbt/sysdep.h"
 #include "xbt/log.h"
 #include "xbt/dict.h"
@@ -13,7 +13,6 @@
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix,
                                 "Logging specific to SIMIX (hosts)");
 
-
 static void SIMIX_execution_finish(smx_action_t action);
 
 /**
@@ -25,21 +24,18 @@ static void SIMIX_execution_finish(smx_action_t action);
 smx_host_t SIMIX_host_create(const char *name,
                                void *workstation, void *data)
 {
-  smx_host_t smx_host = xbt_new0(s_smx_host_t, 1);
+  smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
   s_smx_process_t proc;
 
   /* Host structure */
-  smx_host->name = xbt_strdup(name);
   smx_host->data = data;
-  smx_host->host = workstation;
   smx_host->process_list =
       xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
 
   /* Update global variables */
-  xbt_dict_set(simix_global->host, smx_host->name, smx_host,
-               &SIMIX_host_destroy);
+  xbt_lib_set(host_lib,name,SIMIX_HOST_LEVEL,smx_host);
 
-  return smx_host;
+  return xbt_lib_get_or_null(host_lib, name, SIMIX_HOST_LEVEL);
 }
 
 /**
@@ -49,14 +45,13 @@ smx_host_t SIMIX_host_create(const char *name,
  */
 void SIMIX_host_destroy(void *h)
 {
-  smx_host_t host = (smx_host_t) h;
+  smx_host_priv_t host = (smx_host_priv_t) h;
 
-  xbt_assert0((host != NULL), "Invalid parameters");
+  xbt_assert((host != NULL), "Invalid parameters");
 
   /* Clean Simulator data */
   if (xbt_swag_size(host->process_list) != 0) {
-    char *msg =
-        bprintf("Shutting down host %s, but it's not empty:", host->name);
+    char *msg = xbt_strdup("Shutting down host, but it's not empty:");
     char *tmp;
     smx_process_t process = NULL;
 
@@ -66,35 +61,43 @@ void SIMIX_host_destroy(void *h)
       msg = tmp;
     }
     SIMIX_display_process_status();
-    THROW1(arg_error, 0, "%s", msg);
+    THROWF(arg_error, 0, "%s", msg);
   }
-
+  xbt_dynar_free(&host->auto_restart_processes);
   xbt_swag_free(host->process_list);
 
   /* Clean host structure */
-  free(host->name);
-  free(host);
-
+  free(host); 
   return;
 }
 
-/**
- * \brief Returns a dict of all hosts.
- *
- * \return List of all hosts (as a #xbt_dict_t)
- */
-xbt_dict_t SIMIX_host_get_dict(void)
-{
-  return simix_global->host;
+///**
+// * \brief Returns a dict of all hosts.
+// *
+// * \return List of all hosts (as a #xbt_dict_t)
+// */
+//xbt_dict_t SIMIX_host_get_dict(void)
+//{
+//  xbt_dict_t host_dict = xbt_dict_new_homogeneous(NULL);
+//  xbt_lib_cursor_t cursor = NULL;
+//  char *name = NULL;
+//  void **host = NULL;
+//
+//  xbt_lib_foreach(host_lib, cursor, name, host){
+//    if(host[SIMIX_HOST_LEVEL])
+//            xbt_dict_set(host_dict,name,host[SIMIX_HOST_LEVEL], NULL);
+//  }
+//  return host_dict;
+//}
+smx_host_t SIMIX_pre_host_get_by_name(smx_simcall_t simcall, const char *name){
+   return SIMIX_host_get_by_name(name);
 }
-
-smx_host_t SIMIX_host_get_by_name(const char *name)
-{
-  xbt_assert0(((simix_global != NULL)
-               && (simix_global->host != NULL)),
+smx_host_t SIMIX_host_get_by_name(const char *name){
+  xbt_assert(((simix_global != NULL)
+               && (host_lib != NULL)),
               "Environment not set yet");
 
-  return xbt_dict_get_or_null(simix_global->host, name);
+  return xbt_lib_get_elm_or_null(host_lib, name);
 }
 
 smx_host_t SIMIX_host_self(void)
@@ -103,7 +106,10 @@ smx_host_t SIMIX_host_self(void)
   return (process == NULL) ? NULL : SIMIX_process_get_host(process);
 }
 
-/* needs to be public and without request because it is called
+const char* SIMIX_pre_host_self_get_name(smx_simcall_t simcall){
+   return SIMIX_host_self_get_name();
+}
+/* needs to be public and without simcall because it is called
    by exceptions and logging events */
 const char* SIMIX_host_self_get_name(void)
 {
@@ -114,77 +120,283 @@ const char* SIMIX_host_self_get_name(void)
   return SIMIX_host_get_name(host);
 }
 
-const char* SIMIX_host_get_name(smx_host_t host)
-{
-  xbt_assert0((host != NULL), "Invalid parameters");
+const char* SIMIX_pre_host_get_name(smx_simcall_t simcall, smx_host_t host){
+   return SIMIX_host_get_name(host);
+}
+const char* SIMIX_host_get_name(smx_host_t host){
+  xbt_assert((host != NULL), "Invalid parameters");
 
-  return host->name;
+  return sg_host_name(host);
 }
 
-xbt_dict_t SIMIX_host_get_properties(smx_host_t host)
-{
-  xbt_assert0((host != NULL), "Invalid parameters (simix host is NULL)");
+xbt_dict_t SIMIX_pre_host_get_properties(smx_simcall_t simcall, smx_host_t host){
+  return SIMIX_host_get_properties(host);
+}
+xbt_dict_t SIMIX_host_get_properties(smx_host_t host){
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 
-  return surf_workstation_model->extension.workstation.get_properties(host->host);
+  return surf_workstation_model->extension.workstation.get_properties(host);
 }
 
-double SIMIX_host_get_speed(smx_host_t host)
-{
-  xbt_assert0((host != NULL), "Invalid parameters (simix host is NULL)");
+double SIMIX_pre_host_get_speed(smx_simcall_t simcall, smx_host_t host){
+  return SIMIX_host_get_speed(host);
+}
+double SIMIX_host_get_speed(smx_host_t host){
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 
   return surf_workstation_model->extension.workstation.
-      get_speed(host->host, 1.0);
+      get_speed(host, 1.0);
 }
 
-double SIMIX_host_get_available_speed(smx_host_t host)
-{
-  xbt_assert0((host != NULL), "Invalid parameters (simix host is NULL)");
+int SIMIX_pre_host_get_core(smx_simcall_t simcall, smx_host_t host){
+  return SIMIX_host_get_core(host);
+}
+int SIMIX_host_get_core(smx_host_t host){
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 
   return surf_workstation_model->extension.workstation.
-      get_available_speed(host->host);
+      get_core(host);
 }
 
-int SIMIX_host_get_state(smx_host_t host)
-{
-  xbt_assert0((host != NULL), "Invalid parameters (simix host is NULL)");
+xbt_swag_t SIMIX_pre_host_get_process_list(smx_simcall_t simcall, smx_host_t host){
+  return SIMIX_host_get_process_list(host);
+}
+
+xbt_swag_t SIMIX_host_get_process_list(smx_host_t host){
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+  smx_host_priv_t host_priv = SIMIX_host_priv(host);
+
+  return host_priv->process_list;
+}
+
+
+double SIMIX_pre_host_get_available_speed(smx_simcall_t simcall, smx_host_t host){
+  return SIMIX_host_get_available_speed(host);
+}
+double SIMIX_host_get_available_speed(smx_host_t host){
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+
+  return surf_workstation_model->extension.workstation.
+      get_available_speed(host);
+}
+
+double SIMIX_pre_host_get_current_power_peak(smx_simcall_t simcall, smx_host_t host){
+  return SIMIX_host_get_current_power_peak(host);
+}
+double SIMIX_host_get_current_power_peak(smx_host_t host) {
+         xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+         return surf_workstation_model->extension.workstation.
+                     get_current_power_peak(host);
+}
+
+double SIMIX_pre_host_get_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
+  return SIMIX_host_get_power_peak_at(host, pstate_index);
+}
+double SIMIX_host_get_power_peak_at(smx_host_t host, int pstate_index) {
+         xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+
+         return surf_workstation_model->extension.workstation.
+             get_power_peak_at(host, pstate_index);
+}
+
+int SIMIX_pre_host_get_nb_pstates(smx_simcall_t simcall, smx_host_t host){
+  return SIMIX_host_get_nb_pstates(host);
+}
+int SIMIX_host_get_nb_pstates(smx_host_t host) {
+         xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+
+         return surf_workstation_model->extension.workstation.
+             get_nb_pstates(host);
+}
+
+
+void SIMIX_pre_host_set_power_peak_at(smx_simcall_t simcall, smx_host_t host, int pstate_index){
+  SIMIX_host_set_power_peak_at(host, pstate_index);
+}
+void SIMIX_host_set_power_peak_at(smx_host_t host, int pstate_index) {
+         xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+
+         surf_workstation_model->extension.workstation.
+             set_power_peak_at(host, pstate_index);
+}
+
+double SIMIX_pre_host_get_consumed_energy(smx_simcall_t simcall, smx_host_t host){
+  return SIMIX_host_get_consumed_energy(host);
+}
+double SIMIX_host_get_consumed_energy(smx_host_t host) {
+         xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+         return surf_workstation_model->extension.workstation.
+                     get_consumed_energy(host);
+}
+
+int SIMIX_pre_host_get_state(smx_simcall_t simcall, smx_host_t host){
+  return SIMIX_host_get_state(host);
+}
+int SIMIX_host_get_state(smx_host_t host){
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 
   return surf_workstation_model->extension.workstation.
-      get_state(host->host);
+      get_state(host);
 }
 
+void* SIMIX_pre_host_self_get_data(smx_simcall_t simcall){
+  return SIMIX_host_self_get_data();
+}
 void* SIMIX_host_self_get_data(void)
 {
-  return SIMIX_host_get_data(SIMIX_host_self());
+  smx_host_t self = SIMIX_host_self();
+  return SIMIX_host_get_data(self);
 }
 
 void SIMIX_host_self_set_data(void *data)
 {
-  SIMIX_host_set_data(SIMIX_host_self(), data);
+  smx_host_t self = SIMIX_host_self();
+  SIMIX_host_set_data(self, data);
 }
 
-void* SIMIX_host_get_data(smx_host_t host)
-{
-  xbt_assert0((host != NULL), "Invalid parameters (simix host is NULL)");
+void* SIMIX_pre_host_get_data(smx_simcall_t simcall,smx_host_t host){
+  return SIMIX_host_get_data(host);
+}
+void* SIMIX_host_get_data(smx_host_t host){
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
 
-  return host->data;
+  return SIMIX_host_priv(host)->data;
 }
 
-void SIMIX_host_set_data(smx_host_t host, void *data)
+static void _SIMIX_host_free_process_arg(void *data)
 {
-  xbt_assert0((host != NULL), "Invalid parameters");
-  xbt_assert0((host->data == NULL), "Data already set");
+  smx_process_arg_t arg = *(void**)data;
+  int i;
+  for (i = 0; i < arg->argc; i++)
+    xbt_free(arg->argv[i]);
+  xbt_free(arg->argv);
+  xbt_free(arg->name);
+  xbt_free(arg);
+}
+/**
+ * \brief Add a process to the list of the processes that the host will restart when it comes back
+ * This function add a process to the list of the processes that will be restarted when the host comes
+ * back. It is expected that this function is called when the host is down.
+ * The processes will only be restarted once, meaning that you will have to register the process
+ * again to restart the process again.
+ */
+void SIMIX_host_add_auto_restart_process(smx_host_t host,
+                                         const char *name,
+                                         xbt_main_func_t code,
+                                         void *data,
+                                         const char *hostname,
+                                         double kill_time,
+                                         int argc, char **argv,
+                                         xbt_dict_t properties,
+                                         int auto_restart)
+{
+  if (!SIMIX_host_priv(host)->auto_restart_processes) {
+    SIMIX_host_priv(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
+  }
+  smx_process_arg_t arg = xbt_new(s_smx_process_arg_t,1);
+  arg->name = xbt_strdup(name);
+  arg->code = code;
+  arg->data = data;
+  arg->hostname = hostname;
+  arg->kill_time = kill_time;
+  arg->argc = argc;
+
+  arg->argv = xbt_new(char*,argc + 1);
 
-  host->data = data;
+  int i;
+  for (i = 0; i < argc; i++) {
+    arg->argv[i] = xbt_strdup(argv[i]);
+  }
+  arg->argv[argc] = NULL;
+
+  arg->properties = properties;
+  arg->auto_restart = auto_restart;
+
+  if( SIMIX_host_get_state(host) == SURF_RESOURCE_OFF
+      && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_name(host))){
+    xbt_dict_set(watched_hosts_lib,sg_host_name(host),host,NULL);
+    XBT_DEBUG("Have pushed host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_name(host));
+  }
+  xbt_dynar_push_as(SIMIX_host_priv(host)->auto_restart_processes,smx_process_arg_t,arg);
 }
+/**
+ * \brief Restart the list of processes that have been registered to the host
+ */
+void SIMIX_host_restart_processes(smx_host_t host)
+{
+  unsigned int cpt;
+  smx_process_arg_t arg;
+  xbt_dynar_t process_list = SIMIX_host_priv(host)->auto_restart_processes;
+  if (!process_list)
+    return;
+
+  xbt_dynar_foreach (process_list, cpt, arg) {
+
+    smx_process_t process;
+
+    XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
+    if (simix_global->create_process_function) {
+      simix_global->create_process_function(&process,
+                                            arg->argv[0],
+                                            arg->code,
+                                            NULL,
+                                            arg->hostname,
+                                            arg->kill_time,
+                                            arg->argc,
+                                            arg->argv,
+                                            arg->properties,
+                                            arg->auto_restart);
+    } else {
+      simcall_process_create(&process,
+                             arg->argv[0],
+                             arg->code,
+                             NULL,
+                             arg->hostname,
+                             arg->kill_time,
+                             arg->argc,
+                             arg->argv,
+                             arg->properties,
+                             arg->auto_restart);
 
-smx_action_t SIMIX_host_execute(const char *name, smx_host_t host,
-                                double computation_amount)
+    }
+    /* arg->argv is used by the process created above.  Hide it to
+     * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
+     * below. */
+    arg->argc = 0;
+    arg->argv = NULL;
+  }
+  xbt_dynar_reset(process_list);
+}
+
+void SIMIX_host_autorestart(smx_host_t host)
 {
+  if(simix_global->autorestart)
+    simix_global->autorestart(host);
+  else
+    xbt_die("No function for simix_global->autorestart");
+}
+
+void SIMIX_pre_host_set_data(smx_simcall_t simcall, smx_host_t host, void *data) {
+  SIMIX_host_set_data(host, data);
+}
+void SIMIX_host_set_data(smx_host_t host, void *data){
+  xbt_assert((host != NULL), "Invalid parameters");
+  xbt_assert((SIMIX_host_priv(host)->data == NULL), "Data already set");
+
+  SIMIX_host_priv(host)->data = data;
+}
+
+smx_action_t SIMIX_pre_host_execute(smx_simcall_t simcall,const char *name,
+    smx_host_t host, double computation_amount, double priority){
+  return SIMIX_host_execute(name, host, computation_amount, priority);
+}
+smx_action_t SIMIX_host_execute(const char *name,
+    smx_host_t host, double computation_amount, double priority){
+
   /* alloc structures and initialize */
-  smx_action_t action = xbt_new0(s_smx_action_t, 1);
+  smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
   action->type = SIMIX_ACTION_EXECUTE;
   action->name = xbt_strdup(name);
-  action->request_list = xbt_fifo_new();
   action->state = SIMIX_RUNNING;
   action->execution.host = host;
 
@@ -193,35 +405,38 @@ smx_action_t SIMIX_host_execute(const char *name, smx_host_t host,
 #endif
 
   /* set surf's action */
-  if (!MC_IS_ENABLED) {
+  if (!MC_is_active()) {
     action->execution.surf_exec =
-      surf_workstation_model->extension.workstation.execute(host->host,
-         computation_amount);
+      surf_workstation_model->extension.workstation.execute(host,
+    computation_amount);
     surf_workstation_model->action_data_set(action->execution.surf_exec, action);
+    surf_workstation_model->set_priority(action->execution.surf_exec, priority);
   }
 
-#ifdef HAVE_TRACING
-  TRACE_smx_host_execute(action);
-#endif
-
-  DEBUG1("Create execute action %p", action);
+  XBT_DEBUG("Create execute action %p", action);
 
   return action;
 }
 
-smx_action_t SIMIX_host_parallel_execute( const char *name,
+smx_action_t SIMIX_pre_host_parallel_execute(smx_simcall_t simcall, const char *name,
     int host_nb, smx_host_t *host_list,
     double *computation_amount, double *communication_amount,
-    double amount, double rate)
-{
+    double amount, double rate){
+  return SIMIX_host_parallel_execute(name, host_nb, host_list, computation_amount,
+                                    communication_amount, amount, rate);
+}
+smx_action_t SIMIX_host_parallel_execute(const char *name,
+    int host_nb, smx_host_t *host_list,
+    double *computation_amount, double *communication_amount,
+    double amount, double rate){
+
   void **workstation_list = NULL;
   int i;
 
   /* alloc structures and initialize */
-  smx_action_t action = xbt_new0(s_smx_action_t, 1);
+  smx_action_t action = xbt_mallocator_get(simix_global->action_mallocator);
   action->type = SIMIX_ACTION_PARALLEL_EXECUTE;
   action->name = xbt_strdup(name);
-  action->request_list = xbt_fifo_new();
   action->state = SIMIX_RUNNING;
   action->execution.host = NULL; /* FIXME: do we need the list of hosts? */
 
@@ -232,52 +447,50 @@ smx_action_t SIMIX_host_parallel_execute( const char *name,
   /* set surf's action */
   workstation_list = xbt_new0(void *, host_nb);
   for (i = 0; i < host_nb; i++)
-    workstation_list[i] = host_list[i]->host;
+    workstation_list[i] = host_list[i];
 
   /* set surf's action */
-  if (!MC_IS_ENABLED) {
+  if (!MC_is_active()) {
     action->execution.surf_exec =
       surf_workstation_model->extension.workstation.
       execute_parallel_task(host_nb, workstation_list, computation_amount,
-                           communication_amount, amount, rate);
+                      communication_amount, rate);
 
     surf_workstation_model->action_data_set(action->execution.surf_exec, action);
   }
-  DEBUG1("Create parallel execute action %p", action);
+  XBT_DEBUG("Create parallel execute action %p", action);
 
   return action;
 }
 
-void SIMIX_host_execution_destroy(smx_action_t action)
-{
-  DEBUG1("Destroy action %p", action);
-
-  if (action->name)
-    xbt_free(action->name);
-
-  xbt_fifo_free(action->request_list);
+void SIMIX_pre_host_execution_destroy(smx_simcall_t simcall, smx_action_t action){
+  SIMIX_host_execution_destroy(action);
+}
+void SIMIX_host_execution_destroy(smx_action_t action){
+  XBT_DEBUG("Destroy action %p", action);
 
   if (action->execution.surf_exec) {
     surf_workstation_model->action_unref(action->execution.surf_exec);
     action->execution.surf_exec = NULL;
   }
-
-#ifdef HAVE_TRACING
-  TRACE_smx_action_destroy(action);
-#endif
-  xbt_free(action);
+  xbt_free(action->name);
+  xbt_mallocator_release(simix_global->action_mallocator, action);
 }
 
-void SIMIX_host_execution_cancel(smx_action_t action)
-{
-  DEBUG1("Cancel action %p", action);
+void SIMIX_pre_host_execution_cancel(smx_simcall_t simcall, smx_action_t action){
+  SIMIX_host_execution_cancel(action);
+}
+void SIMIX_host_execution_cancel(smx_action_t action){
+  XBT_DEBUG("Cancel action %p", action);
 
   if (action->execution.surf_exec)
     surf_workstation_model->action_cancel(action->execution.surf_exec);
 }
 
-double SIMIX_host_execution_get_remains(smx_action_t action)
-{
+double SIMIX_pre_host_execution_get_remains(smx_simcall_t simcall, smx_action_t action){
+  return SIMIX_host_execution_get_remains(action);
+}
+double SIMIX_host_execution_get_remains(smx_action_t action){
   double result = 0.0;
 
   if (action->state == SIMIX_RUNNING)
@@ -286,30 +499,35 @@ double SIMIX_host_execution_get_remains(smx_action_t action)
   return result;
 }
 
-e_smx_state_t SIMIX_host_execution_get_state(smx_action_t action)
-{
+e_smx_state_t SIMIX_pre_host_execution_get_state(smx_simcall_t simcall, smx_action_t action){
+  return SIMIX_host_execution_get_state(action);
+}
+e_smx_state_t SIMIX_host_execution_get_state(smx_action_t action){
   return action->state;
 }
 
-void SIMIX_host_execution_set_priority(smx_action_t action, double priority)
-{
-  surf_workstation_model->set_priority(action->execution.surf_exec, priority);
+void SIMIX_pre_host_execution_set_priority(smx_simcall_t simcall, smx_action_t action,
+                                       double priority){
+  return SIMIX_host_execution_set_priority(action, priority);
+}
+void SIMIX_host_execution_set_priority(smx_action_t action, double priority){
+  if(action->execution.surf_exec)
+    surf_workstation_model->set_priority(action->execution.surf_exec, priority);
 }
 
-void SIMIX_pre_host_execution_wait(smx_req_t req)
-{
-  smx_action_t action = req->host_execution_wait.execution;
+void SIMIX_pre_host_execution_wait(smx_simcall_t simcall, smx_action_t action){
 
-  DEBUG2("Wait for execution of action %p, state %d", action, action->state);
+  XBT_DEBUG("Wait for execution of action %p, state %d", action, (int)action->state);
 
-  /* Associate this request to the action */
-  xbt_fifo_push(action->request_list, req);
-  req->issuer->waiting_action = action;
+  /* Associate this simcall to the action */
+  xbt_fifo_push(action->simcalls, simcall);
+  simcall->issuer->waiting_action = action;
 
   /* set surf's action */
-  if (MC_IS_ENABLED){
+  if (MC_is_active()) {
     action->state = SIMIX_DONE;
     SIMIX_execution_finish(action);
+    return;
   }
 
   /* If the action is already finished then perform the error handling */
@@ -319,81 +537,96 @@ void SIMIX_pre_host_execution_wait(smx_req_t req)
 
 void SIMIX_host_execution_suspend(smx_action_t action)
 {
-  surf_workstation_model->suspend(action->execution.surf_exec);
+  if(action->execution.surf_exec)
+    surf_workstation_model->suspend(action->execution.surf_exec);
 }
 
 void SIMIX_host_execution_resume(smx_action_t action)
 {
-  surf_workstation_model->suspend(action->execution.surf_exec);
+  if(action->execution.surf_exec)
+    surf_workstation_model->resume(action->execution.surf_exec);
 }
 
 void SIMIX_execution_finish(smx_action_t action)
 {
   xbt_fifo_item_t item;
-  smx_req_t req;
+  smx_simcall_t simcall;
 
-  xbt_fifo_foreach(action->request_list, item, req, smx_req_t) {
+  xbt_fifo_foreach(action->simcalls, item, simcall, smx_simcall_t) {
 
     switch (action->state) {
 
       case SIMIX_DONE:
-        /* do nothing, action done*/
-       DEBUG0("SIMIX_execution_finished: execution successful");
+        /* do nothing, action done */
+  XBT_DEBUG("SIMIX_execution_finished: execution successful");
         break;
 
       case SIMIX_FAILED:
-        TRY {
-         DEBUG1("SIMIX_execution_finished: host '%s' failed", req->issuer->smx_host->name);
-          THROW0(host_error, 0, "Host failed");
-        }
-       CATCH(req->issuer->running_ctx->exception) {
-         req->issuer->doexception = 1;
-       }
-      break;
+        XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_name(simcall->issuer->smx_host));
+        simcall->issuer->context->iwannadie = 1;
+        SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
+        break;
 
       case SIMIX_CANCELED:
-        TRY {
-         DEBUG0("SIMIX_execution_finished: execution canceled");
-          THROW0(cancel_error, 0, "Canceled");
-        }
-       CATCH(req->issuer->running_ctx->exception) {
-         req->issuer->doexception = 1;
-        }
-       break;
+        XBT_DEBUG("SIMIX_execution_finished: execution canceled");
+        SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
+        break;
 
       default:
-        THROW_IMPOSSIBLE;
+        xbt_die("Internal error in SIMIX_execution_finish: unexpected action state %d",
+            (int)action->state);
     }
-    req->issuer->waiting_action = NULL;
-    SIMIX_request_answer(req);
+    /* check if the host is down */
+    if (surf_workstation_model->extension.
+        workstation.get_state(simcall->issuer->smx_host) != SURF_RESOURCE_ON) {
+      simcall->issuer->context->iwannadie = 1;
+    }
+
+    simcall->issuer->waiting_action =    NULL;
+    simcall_host_execution_wait__set__result(simcall, action->state);
+    SIMIX_simcall_answer(simcall);
   }
+
+  /* We no longer need it */
+  SIMIX_host_execution_destroy(action);
 }
 
 void SIMIX_post_host_execute(smx_action_t action)
 {
-  /* FIXME: check if the host running the action failed or not*/
-  /*if(surf_workstation_model->extension.workstation.get_state(action->host->host))*/
-
-  /* If the host running the action didn't fail, then the action was cancelled */
-  if (surf_workstation_model->action_state_get(action->execution.surf_exec) == SURF_ACTION_FAILED)
-     action->state = SIMIX_CANCELED;
-  else
-     action->state = SIMIX_DONE;
+  if (action->type == SIMIX_ACTION_EXECUTE && /* FIMXE: handle resource failure
+                                               * for parallel tasks too */
+      surf_workstation_model->extension.workstation.get_state(action->execution.host) == SURF_RESOURCE_OFF) {
+    /* If the host running the action failed, notice it so that the asking
+     * process can be killed if it runs on that host itself */
+    action->state = SIMIX_FAILED;
+  } else if (surf_workstation_model->action_state_get(action->execution.surf_exec) == SURF_ACTION_FAILED) {
+    /* If the host running the action didn't fail, then the action was
+     * canceled */
+    action->state = SIMIX_CANCELED;
+  } else {
+    action->state = SIMIX_DONE;
+  }
 
   if (action->execution.surf_exec) {
     surf_workstation_model->action_unref(action->execution.surf_exec);
     action->execution.surf_exec = NULL;
   }
 
-  /* If there are requests associated with the action, then answer them */
-  if (xbt_fifo_size(action->request_list))
+  /* If there are simcalls associated with the action, then answer them */
+  if (xbt_fifo_size(action->simcalls)) {
     SIMIX_execution_finish(action);
+  }
 }
 
 
 #ifdef HAVE_TRACING
+void SIMIX_pre_set_category(smx_simcall_t simcall, smx_action_t action,
+                           const char *category){
+  SIMIX_set_category(action, category);
+}
 void SIMIX_set_category(smx_action_t action, const char *category)
 {
+  if (action->state != SIMIX_RUNNING) return;
   if (action->type == SIMIX_ACTION_EXECUTE){
     surf_workstation_model->set_category(action->execution.surf_exec, category);
   }else if (action->type == SIMIX_ACTION_COMMUNICATE){
@@ -402,3 +635,11 @@ void SIMIX_set_category(smx_action_t action, const char *category)
 }
 #endif
 
+xbt_dict_t SIMIX_pre_host_get_storage_list(smx_simcall_t simcall, smx_host_t host){
+  return SIMIX_host_get_storage_list(host);
+}
+xbt_dict_t SIMIX_host_get_storage_list(smx_host_t host){
+  xbt_assert((host != NULL), "Invalid parameters (simix host is NULL)");
+
+  return surf_workstation_model->extension.workstation.get_storage_list(host);
+}