void TRACE_surf_update_action_state_net_resource (const char *name, smx_action_t smx_action, double value, double now, double delta);
void TRACE_surf_update_action_state_cpu_resource (const char *name, smx_action_t smx_action, double value, double now, double delta);
void TRACE_surf_link_declaration (char *name, double bw, double lat);
void TRACE_surf_update_action_state_net_resource (const char *name, smx_action_t smx_action, double value, double now, double delta);
void TRACE_surf_update_action_state_cpu_resource (const char *name, smx_action_t smx_action, double value, double now, double delta);
void TRACE_surf_link_declaration (char *name, double bw, double lat);