100 lines
3.4 KiB
C++
100 lines
3.4 KiB
C++
/*************************************************************************\
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* Copyright (c) 2002 The University of Chicago, as Operator of Argonne
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* National Laboratory.
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* Copyright (c) 2002 The Regents of the University of California, as
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* Operator of Los Alamos National Laboratory.
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* SPDX-License-Identifier: EPICS
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* EPICS BASE is distributed subject to a Software License Agreement found
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* in file LICENSE that is included with this distribution.
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\*************************************************************************/
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//
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//
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//
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// L O S A L A M O S
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// Los Alamos National Laboratory
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// Los Alamos, New Mexico 87545
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//
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// Copyright, 1986, The Regents of the University of California.
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//
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//
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// Author Jeffrey O. Hill
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// johill@lanl.gov
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// 505 665 1831
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//
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#ifndef INC_searchTimer_H
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#define INC_searchTimer_H
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#include "epicsMutex.h"
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#include "epicsGuard.h"
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#include "epicsTimer.h"
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#include "libCaAPI.h"
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#include "caProto.h"
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#include "netiiu.h"
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class searchTimerNotify {
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public:
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virtual ~searchTimerNotify () = 0;
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virtual void boostChannel (
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epicsGuard < epicsMutex > &, nciu & ) = 0;
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virtual void noSearchRespNotify (
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epicsGuard < epicsMutex > &, nciu &, unsigned ) = 0;
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virtual double getRTTE ( epicsGuard < epicsMutex > & ) const = 0;
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virtual void updateRTTE ( epicsGuard < epicsMutex > &, double rtte ) = 0;
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virtual bool datagramFlush (
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epicsGuard < epicsMutex > &,
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const epicsTime & currentTime ) = 0;
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virtual ca_uint32_t datagramSeqNumber (
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epicsGuard < epicsMutex > & ) const = 0;
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};
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class searchTimer : private epicsTimerNotify {
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public:
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searchTimer (
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class searchTimerNotify &, epicsTimerQueue &,
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const unsigned index, epicsMutex &,
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bool boostPossible );
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virtual ~searchTimer ();
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void start ( epicsGuard < epicsMutex > & );
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void shutdown (
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epicsGuard < epicsMutex > & cbGuard,
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epicsGuard < epicsMutex > & guard );
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void moveChannels (
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epicsGuard < epicsMutex > &, searchTimer & dest );
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void installChannel (
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epicsGuard < epicsMutex > &, nciu & );
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void uninstallChan (
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epicsGuard < epicsMutex > &, nciu & );
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void uninstallChanDueToSuccessfulSearchResponse (
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epicsGuard < epicsMutex > &, nciu &,
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ca_uint32_t respDatagramSeqNo, bool seqNumberIsValid,
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const epicsTime & currentTime );
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void show ( unsigned level ) const;
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private:
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tsDLList < nciu > chanListReqPending;
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tsDLList < nciu > chanListRespPending;
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epicsTime timeAtLastSend;
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epicsTimer & timer;
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searchTimerNotify & iiu;
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epicsMutex & mutex;
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double framesPerTry; /* # of UDP frames per search try */
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double framesPerTryCongestThresh; /* one half N tries w congest */
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unsigned retry;
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unsigned searchAttempts; /* num search tries after last timer expiration */
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unsigned searchResponses; /* num search resp after last timer expiration */
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const unsigned index;
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ca_uint32_t dgSeqNoAtTimerExpireBegin;
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ca_uint32_t dgSeqNoAtTimerExpireEnd;
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const bool boostPossible;
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bool stopped;
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expireStatus expire ( const epicsTime & currentTime );
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double period ( epicsGuard < epicsMutex > & ) const;
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searchTimer ( const searchTimer & ); // not implemented
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searchTimer & operator = ( const searchTimer & ); // not implemented
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};
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#endif // ifdef INC_searchTimer_H
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