diff options
Diffstat (limited to 'src/lib/evloop/token_bucket.h')
| -rw-r--r-- | src/lib/evloop/token_bucket.h | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/src/lib/evloop/token_bucket.h b/src/lib/evloop/token_bucket.h index 9398d2baa3..460dad23e4 100644 --- a/src/lib/evloop/token_bucket.h +++ b/src/lib/evloop/token_bucket.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2018-2019, The Tor Project, Inc. */ +/* Copyright (c) 2018-2020, The Tor Project, Inc. */ /* See LICENSE for licensing information */ /** @@ -103,6 +103,35 @@ token_bucket_rw_get_write(const token_bucket_rw_t *bucket) return token_bucket_raw_get(&bucket->write_bucket); } +/** + * A specialized bucket containing a single counter. + */ + +typedef struct token_bucket_ctr_t { + token_bucket_cfg_t cfg; + token_bucket_raw_t counter; + uint32_t last_refilled_at_timestamp; +} token_bucket_ctr_t; + +void token_bucket_ctr_init(token_bucket_ctr_t *bucket, uint32_t rate, + uint32_t burst, uint32_t now_ts); +void token_bucket_ctr_adjust(token_bucket_ctr_t *bucket, uint32_t rate, + uint32_t burst); +void token_bucket_ctr_reset(token_bucket_ctr_t *bucket, uint32_t now_ts); +void token_bucket_ctr_refill(token_bucket_ctr_t *bucket, uint32_t now_ts); + +static inline bool +token_bucket_ctr_dec(token_bucket_ctr_t *bucket, ssize_t n) +{ + return token_bucket_raw_dec(&bucket->counter, n); +} + +static inline size_t +token_bucket_ctr_get(const token_bucket_ctr_t *bucket) +{ + return token_bucket_raw_get(&bucket->counter); +} + #ifdef TOKEN_BUCKET_PRIVATE /* To avoid making the rates too small, we consider units of "steps", @@ -112,6 +141,6 @@ token_bucket_rw_get_write(const token_bucket_rw_t *bucket) STATIC uint32_t rate_per_sec_to_rate_per_step(uint32_t rate); -#endif +#endif /* defined(TOKEN_BUCKET_PRIVATE) */ -#endif /* TOR_TOKEN_BUCKET_H */ +#endif /* !defined(TOR_TOKEN_BUCKET_H) */ |