78 lines
2.8 KiB
C
78 lines
2.8 KiB
C
/******************************************************************************
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* $Id$
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*
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* Copyright (c) 2006-2008 Transmission authors and contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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#ifndef __TRANSMISSION__
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#error only libtransmission should #include this header.
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#endif
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#ifndef _TR_RATECONTROL_H_
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#define _TR_RATECONTROL_H_
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#include <string.h> /* memset() */
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#include "transmission.h"
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/* these are PRIVATE IMPLEMENTATION details that should not be touched.
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* it's included in the header for inlining and composition. */
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enum
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{
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TR_RC_HISTORY_MSEC = 2000,
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TR_RC_GRANULARITY_MSEC = 250,
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TR_RC_HISTORY_SIZE = ( TR_RC_HISTORY_MSEC / TR_RC_GRANULARITY_MSEC )
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};
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/* these are PRIVATE IMPLEMENTATION details that should not be touched.
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* it's included in the header for inlining and composition. */
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struct tr_transfer
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{
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uint64_t date;
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uint64_t size;
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};
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/* these are PRIVATE IMPLEMENTATION details that should not be touched.
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* it's included in the header for inlining and composition. */
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typedef struct tr_ratecontrol
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{
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int newest;
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struct tr_transfer transfers[TR_RC_HISTORY_SIZE];
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}
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tr_ratecontrol;
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/***
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****
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***/
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static TR_INLINE void tr_rcConstruct ( tr_ratecontrol * rc ) { memset( rc, 0, sizeof( tr_ratecontrol ) ); }
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static TR_INLINE void tr_rcDestruct ( tr_ratecontrol * rc ) { memset( rc, 0xDEAD, sizeof( tr_ratecontrol ) ); }
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void tr_rcTransferred ( tr_ratecontrol * ratecontrol,
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size_t byteCount );
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float tr_rcRate ( const tr_ratecontrol * ratecontrol,
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uint64_t now );
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#endif
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