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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
a7334b09 | 2 | |
11c3a366 TA |
3 | #include <sys/time.h> |
4 | ||
11c3a366 | 5 | #include "macro.h" |
93cc7779 | 6 | #include "ratelimit.h" |
1e2e8133 LP |
7 | |
8 | /* Modelled after Linux' lib/ratelimit.c by Dave Young | |
9 | * <hidave.darkstar@gmail.com>, which is licensed GPLv2. */ | |
10 | ||
7994ac1d | 11 | bool ratelimit_below(RateLimit *r) { |
871d7de4 | 12 | usec_t ts; |
1e2e8133 | 13 | |
1e2e8133 | 14 | assert(r); |
cafac610 LP |
15 | |
16 | if (r->interval <= 0 || r->burst <= 0) | |
17 | return true; | |
18 | ||
19 | ts = now(CLOCK_MONOTONIC); | |
1e2e8133 LP |
20 | |
21 | if (r->begin <= 0 || | |
871d7de4 | 22 | r->begin + r->interval < ts) { |
871d7de4 | 23 | r->begin = ts; |
1e2e8133 | 24 | |
4ce9faa9 HH |
25 | /* Reset counter */ |
26 | r->num = 0; | |
1e2e8133 LP |
27 | goto good; |
28 | } | |
29 | ||
1c008326 | 30 | if (r->num < r->burst) |
1e2e8133 LP |
31 | goto good; |
32 | ||
1e2e8133 LP |
33 | return false; |
34 | ||
35 | good: | |
4ce9faa9 | 36 | r->num++; |
1e2e8133 LP |
37 | return true; |
38 | } |