diff options
Diffstat (limited to 'freebsd/sys/sys/counter.h')
| -rw-r--r-- | freebsd/sys/sys/counter.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/freebsd/sys/sys/counter.h b/freebsd/sys/sys/counter.h index 2ce71341..5046d41d 100644 --- a/freebsd/sys/sys/counter.h +++ b/freebsd/sys/sys/counter.h @@ -59,5 +59,18 @@ uint64_t counter_u64_fetch(counter_u64_t); for (int i = 0; i < (n); i++) \ counter_u64_zero((a)[i]); \ } while (0) + +/* + * counter(9) based rate checking. + */ +struct counter_rate { + counter_u64_t cr_rate; /* Events since last second */ + volatile int cr_lock; /* Lock to clean the struct */ + int cr_ticks; /* Ticks on last clean */ + int cr_over; /* Over limit since cr_ticks? */ +}; + +int64_t counter_ratecheck(struct counter_rate *, int64_t); + #endif /* _KERNEL */ #endif /* ! __SYS_COUNTER_H__ */ |