-XBT_PRIVATE std::string instr_process_id(msg_process_t proc);
-XBT_PRIVATE void TRACE_msg_process_change_host(msg_process_t process, msg_host_t new_host);
-XBT_PRIVATE void TRACE_msg_process_create(const char* process_name, int process_pid, msg_host_t host);
-XBT_PRIVATE void TRACE_msg_process_destroy(const char* process_name, int process_pid);