+void smx_ctx_sysv_runall(xbt_dynar_t processes);
+void smx_ctx_sysv_resume_parallel(smx_process_t new_context);
+void smx_ctx_sysv_runall_parallel(xbt_dynar_t processes);
+int smx_ctx_sysv_get_thread_id(void);
+smx_context_t smx_ctx_sysv_self_parallel(void);