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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
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/***
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This file is part of PulseAudio.
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Copyright 2009 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <pulsecore/rtclock.h>
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#include <pulsecore/log.h>
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#include <pulsecore/mutex.h>
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#include "ratelimit.h"
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static pa_static_mutex mutex;
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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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pa_bool_t pa_ratelimit_test(pa_ratelimit *r) {
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pa_usec_t now;
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pa_mutex *m;
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now = pa_rtclock_usec();
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m = pa_static_mutex_get(&mutex, FALSE, FALSE);
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pa_mutex_lock(m);
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pa_assert(r);
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pa_assert(r->interval > 0);
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pa_assert(r->burst > 0);
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if (r->begin <= 0 ||
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r->begin + r->interval < now) {
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if (r->n_missed > 0)
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pa_log_warn("%u events suppressed", r->n_missed);
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r->begin = now;
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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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pa_mutex_unlock(m);
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return FALSE;
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good:
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r->n_printed++;
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pa_mutex_unlock(m);
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return TRUE;
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}
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