+/* declaration of instrumentation functions from instr_msg_vm.c */
+char *instr_vm_id (msg_vm_t vm, char *str, int len);
+char *instr_vm_id_2 (const char *vm_name, char *str, int len);
+void TRACE_msg_vm_change_host(msg_vm_t vm, msg_host_t old_host,
+ msg_host_t new_host);
+void TRACE_msg_vm_create (const char *vm_name, msg_host_t host);
+void TRACE_msg_vm_kill(msg_vm_t process);
+void TRACE_msg_vm_suspend(msg_vm_t vm);
+void TRACE_msg_vm_resume(msg_vm_t vm);
+void TRACE_msg_vm_sleep_in(msg_vm_t vm);
+void TRACE_msg_vm_sleep_out(msg_vm_t vm);
+void TRACE_msg_vm_end(msg_vm_t vm);
+