44 lines
945 B
C
44 lines
945 B
C
/*-*- Mode: C; c-basic-offset: 8 -*-*/
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#include <assert.h>
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#include "ratelimit.h"
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#include "log.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_test(RateLimit *r) {
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usec_t timestamp;
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timestamp = now(CLOCK_MONOTONIC);
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assert(r);
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assert(r->interval > 0);
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assert(r->burst > 0);
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if (r->begin <= 0 ||
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r->begin + r->interval < timestamp) {
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if (r->n_missed > 0)
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log_warning("%u events suppressed", r->n_missed);
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r->begin = timestamp;
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/* Reset counters */
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r->n_printed = 0;
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r->n_missed = 0;
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goto good;
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}
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if (r->n_printed <= r->burst)
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goto good;
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r->n_missed++;
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return false;
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good:
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r->n_printed++;
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return true;
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}
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