int tag, int (*match_fun)(void *, void *, smx_synchro_t), void *data);
XBT_PRIVATE void SIMIX_post_comm(smx_synchro_t synchro);
XBT_PRIVATE double SIMIX_comm_get_remains(smx_synchro_t synchro);
-XBT_PRIVATE e_smx_state_t SIMIX_comm_get_state(smx_synchro_t synchro);
XBT_PRIVATE smx_process_t SIMIX_comm_get_src_proc(smx_synchro_t synchro);
XBT_PRIVATE smx_process_t SIMIX_comm_get_dst_proc(smx_synchro_t synchro);