From e99e38bbdcca3fe5956823bdb3d38544ccf93221 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Sun, 16 May 2010 18:45:24 +0200 Subject: build-sys: move source files to subdirectory --- src/ratelimit.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 src/ratelimit.c (limited to 'src/ratelimit.c') diff --git a/src/ratelimit.c b/src/ratelimit.c new file mode 100644 index 0000000000..1e5ed03c55 --- /dev/null +++ b/src/ratelimit.c @@ -0,0 +1,62 @@ +/*-*- Mode: C; c-basic-offset: 8 -*-*/ + +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with systemd; If not, see . +***/ + +#include + +#include "ratelimit.h" +#include "log.h" + +/* Modelled after Linux' lib/ratelimit.c by Dave Young + * , which is licensed GPLv2. */ + +bool ratelimit_test(RateLimit *r) { + usec_t timestamp; + + timestamp = now(CLOCK_MONOTONIC); + + assert(r); + assert(r->interval > 0); + assert(r->burst > 0); + + if (r->begin <= 0 || + r->begin + r->interval < timestamp) { + + if (r->n_missed > 0) + log_warning("%u events suppressed", r->n_missed); + + r->begin = timestamp; + + /* Reset counters */ + r->n_printed = 0; + r->n_missed = 0; + goto good; + } + + if (r->n_printed <= r->burst) + goto good; + + r->n_missed++; + return false; + +good: + r->n_printed++; + return true; +} -- cgit v1.2.3-54-g00ecf