-XBT_PRIVATE std::string instr_pid(msg_process_t proc);
-XBT_PRIVATE void TRACE_msg_process_create(std::string process_name, int process_pid, msg_host_t host);
-XBT_PRIVATE void TRACE_msg_process_destroy(std::string process_name, int process_pid);
+XBT_PRIVATE void TRACE_msg_process_create(msg_process_t process, msg_host_t host);
+XBT_PRIVATE void TRACE_msg_process_destroy(msg_process_t process);