7994ac1d85
When I see "test", I have to think three times what the return value
means. With "below" this is immediately clear. ratelimit_below(&limit)
sounds almost like English and is imho immediately obvious.
(I also considered ratelimit_ok, but this strongly implies that being under the
limit is somehow better. Most of the times this is true, but then we use the
ratelimit to detect triple-c-a-d, and "ok" doesn't fit so well there.)
C.f. a1bcaa07
.
44 lines
828 B
C
44 lines
828 B
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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***/
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#include <sys/time.h>
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#include "macro.h"
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#include "ratelimit.h"
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/* Modelled after Linux' lib/ratelimit.c by Dave Young
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* <hidave.darkstar@gmail.com>, which is licensed GPLv2. */
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bool ratelimit_below(RateLimit *r) {
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usec_t ts;
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assert(r);
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if (r->interval <= 0 || r->burst <= 0)
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return true;
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ts = now(CLOCK_MONOTONIC);
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if (r->begin <= 0 ||
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r->begin + r->interval < ts) {
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r->begin = ts;
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/* Reset counter */
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r->num = 0;
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goto good;
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}
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if (r->num < r->burst)
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goto good;
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return false;
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good:
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r->num++;
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return true;
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}
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