43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/*
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* Copyright(c) 2006 to 2019 ZettaScale Technology and others
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*
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* This program and the accompanying materials are made available under the
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* terms of the Eclipse Public License v. 2.0 which is available at
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* http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
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* v. 1.0 which is available at
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* http://www.eclipse.org/org/documents/edl-v10.php.
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*
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* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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*/
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#ifndef NN_LAT_ESTIM_H
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#define NN_LAT_ESTIM_H
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#include "dds/ddsi/q_log.h"
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#if defined (__cplusplus)
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extern "C" {
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#endif
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#define NN_LAT_ESTIM_MEDIAN_WINSZ 7
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struct nn_lat_estim {
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/* median filtering with a small window in an attempt to remove the
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worst outliers */
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int index;
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float window[NN_LAT_ESTIM_MEDIAN_WINSZ];
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/* simple alpha filtering for smoothing */
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float smoothed;
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};
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void nn_lat_estim_init (struct nn_lat_estim *le);
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void nn_lat_estim_fini (struct nn_lat_estim *le);
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void nn_lat_estim_update (struct nn_lat_estim *le, int64_t est);
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double nn_lat_estim_current (const struct nn_lat_estim *le);
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int nn_lat_estim_log (uint32_t logcat, const struct ddsrt_log_cfg *logcfg, const char *tag, const struct nn_lat_estim *le);
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#if defined (__cplusplus)
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}
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#endif
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#endif /* NN_LAT_ESTIM_H */
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