void lttv_trace_find_hook(LttTrace *t, char *facility, char *event_type,
char *field1, char *field2, char *field3, LttvHook h, LttvTraceHook *th);
void lttv_trace_find_hook(LttTrace *t, char *facility, char *event_type,
char *field1, char *field2, char *field3, LttvHook h, LttvTraceHook *th);