XBT_PUBLIC(msg_error_t) MSG_host_set_data(msg_host_t host, void *data);
XBT_PUBLIC(void *) MSG_host_get_data(msg_host_t host);
XBT_PUBLIC(const char *) MSG_host_get_name(msg_host_t host);
+XBT_PUBLIC(void) MSG_host_on(msg_host_t host);
+XBT_PUBLIC(void) MSG_host_off(msg_host_t host);
XBT_PUBLIC(msg_host_t) MSG_host_self(void);
XBT_PUBLIC(int) MSG_get_host_msgload(msg_host_t host);
/* int MSG_get_msgload(void); This function lacks specification; discard it */