-XBT_PRIVATE xbt_dict_t SIMIX_host_get_properties(sg_host_t host);
-XBT_PRIVATE xbt_swag_t SIMIX_host_get_process_list(sg_host_t host);
-XBT_PRIVATE double SIMIX_host_get_current_power_peak(sg_host_t host);
-XBT_PRIVATE double SIMIX_host_get_power_peak_at(sg_host_t host, int pstate_index);
-XBT_PRIVATE double SIMIX_host_get_wattmin_at(sg_host_t host,int pstate);
-XBT_PRIVATE double SIMIX_host_get_wattmax_at(sg_host_t host,int pstate);
-XBT_PRIVATE void SIMIX_host_set_pstate(sg_host_t host, int pstate_index);
-XBT_PRIVATE smx_synchro_t SIMIX_process_execute(smx_process_t issuer, const char *name,
- double flops_amount, double priority, double bound, unsigned long affinity_mask);
-XBT_PRIVATE smx_synchro_t SIMIX_process_parallel_execute(const char *name,
- int host_nb, sg_host_t *host_list,
- double *flops_amount, double *bytes_amount,
- double amount, double rate);
-XBT_PRIVATE void SIMIX_process_execution_destroy(smx_synchro_t synchro);
-XBT_PRIVATE void SIMIX_process_execution_cancel(smx_synchro_t synchro);
-XBT_PRIVATE double SIMIX_process_execution_get_remains(smx_synchro_t synchro);
-XBT_PRIVATE e_smx_state_t SIMIX_process_execution_get_state(smx_synchro_t synchro);
-XBT_PRIVATE void SIMIX_process_execution_set_priority(smx_synchro_t synchro, double priority);
-XBT_PRIVATE void SIMIX_process_execution_set_bound(smx_synchro_t synchro, double bound);
-XBT_PRIVATE void SIMIX_process_execution_set_affinity(smx_synchro_t synchro, sg_host_t host, unsigned long mask);
-XBT_PRIVATE xbt_dynar_t SIMIX_host_get_attached_storage_list(sg_host_t host);
-
-XBT_PRIVATE void SIMIX_host_execution_suspend(smx_synchro_t synchro);
-XBT_PRIVATE void SIMIX_host_execution_resume(smx_synchro_t synchro);
-
-XBT_PRIVATE void SIMIX_post_host_execute(smx_synchro_t synchro);
-XBT_PRIVATE void SIMIX_set_category(smx_synchro_t synchro, const char *category);
-
-/* vm related stuff */
-XBT_PRIVATE sg_host_t SIMIX_vm_create(const char *name, sg_host_t ind_phys_host);
-
-XBT_PRIVATE void SIMIX_vm_destroy(sg_host_t ind_vm);
-// --
-XBT_PRIVATE void SIMIX_vm_resume(sg_host_t ind_vm, smx_process_t issuer);
-
-XBT_PRIVATE void SIMIX_vm_suspend(sg_host_t ind_vm, smx_process_t issuer);
-// --
-XBT_PRIVATE void SIMIX_vm_save(sg_host_t ind_vm, smx_process_t issuer);
-
-XBT_PRIVATE void SIMIX_vm_restore(sg_host_t ind_vm, smx_process_t issuer);
-// --
-XBT_PRIVATE void SIMIX_vm_start(sg_host_t ind_vm);
-
-XBT_PRIVATE void SIMIX_vm_shutdown(sg_host_t ind_vm, smx_process_t issuer);
-// --
-
-XBT_PRIVATE int SIMIX_vm_get_state(sg_host_t ind_vm);
-// --
-XBT_PRIVATE void SIMIX_vm_migrate(sg_host_t ind_vm, sg_host_t ind_dst_pm);
-
-XBT_PRIVATE void *SIMIX_vm_get_pm(sg_host_t ind_vm);
-
-XBT_PRIVATE void SIMIX_vm_set_bound(sg_host_t ind_vm, double bound);
-
-XBT_PRIVATE void SIMIX_vm_set_affinity(sg_host_t ind_vm, sg_host_t ind_pm, unsigned long mask);
-
-XBT_PRIVATE void SIMIX_vm_migratefrom_resumeto(sg_host_t vm, sg_host_t src_pm, sg_host_t dst_pm);
-
-XBT_PRIVATE void SIMIX_host_get_params(sg_host_t ind_vm, vm_params_t params);
-
-XBT_PRIVATE void SIMIX_host_set_params(sg_host_t ind_vm, vm_params_t params);
+XBT_PRIVATE smx_activity_t SIMIX_execution_start(smx_actor_t issuer, const char *name,
+ double flops_amount, double priority, double bound);
+XBT_PRIVATE smx_activity_t SIMIX_execution_parallel_start(const char* name, int host_nb, sg_host_t* host_list,
+ double* flops_amount, double* bytes_amount, double amount,
+ double rate, double timeout);
+XBT_PRIVATE void SIMIX_execution_cancel(smx_activity_t synchro);
+XBT_PRIVATE void SIMIX_execution_set_priority(smx_activity_t synchro, double priority);
+XBT_PRIVATE void SIMIX_execution_set_bound(smx_activity_t synchro, double bound);
+
+XBT_PRIVATE void SIMIX_execution_finish(simgrid::kernel::activity::Exec *exec);
+
+XBT_PRIVATE void SIMIX_set_category(smx_activity_t synchro, const char *category);