146 lines
3.6 KiB
C++
146 lines
3.6 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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* EPICS BASE Versions 3.13.7
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* and higher are 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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* 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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* Author: Jeff Hill
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*/
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#include <stdexcept>
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#include <float.h>
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#define epicsAssertAuthor "Jeff Hill johill@lanl.gov"
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#include "errlog.h"
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#define epicsExportSharedSymbols
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#include "iocinf.h"
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#include "localHostName.h"
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#include "cacIO.h"
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class CACChannelPrivate {
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public:
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CACChannelPrivate ();
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unsigned getHostName ( char * pBuf, unsigned bufLength );
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const char * pHostName ();
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private:
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epicsSingleton < localHostName > :: reference
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_refLocalHostName;
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};
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static epicsThreadOnceId cacChannelIdOnce = EPICS_THREAD_ONCE_INIT;
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const cacChannel::priLev cacChannel::priorityMax = 99u;
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const cacChannel::priLev cacChannel::priorityMin = 0u;
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const cacChannel::priLev cacChannel::priorityDefault = priorityMin;
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const cacChannel::priLev cacChannel::priorityLinksDB = priorityMax;
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const cacChannel::priLev cacChannel::priorityArchive = ( priorityMax - priorityMin ) / 2;
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const cacChannel::priLev cacChannel::priorityOPI = priorityMin;
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cacChannel::~cacChannel ()
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{
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}
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caAccessRights cacChannel::accessRights (
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epicsGuard < epicsMutex > & ) const
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{
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static caAccessRights ar ( true, true );
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return ar;
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}
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unsigned cacChannel::searchAttempts (
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epicsGuard < epicsMutex > & ) const
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{
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return 0u;
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}
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double cacChannel::beaconPeriod (
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epicsGuard < epicsMutex > & ) const
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{
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return - DBL_MAX;
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}
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double cacChannel::receiveWatchdogDelay (
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epicsGuard < epicsMutex > & ) const
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{
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return - DBL_MAX;
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}
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bool cacChannel::ca_v42_ok (
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epicsGuard < epicsMutex > & ) const
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{
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return true;
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}
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bool cacChannel::connected (
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epicsGuard < epicsMutex > & ) const
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{
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return true;
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}
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CACChannelPrivate ::
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CACChannelPrivate() :
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_refLocalHostName ( localHostNameCache.getReference () )
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{
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}
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inline unsigned CACChannelPrivate ::
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getHostName ( char * pBuf, unsigned bufLength )
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{
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return _refLocalHostName->getName ( pBuf, bufLength );
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}
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inline const char * CACChannelPrivate ::
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pHostName ()
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{
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return _refLocalHostName->pointer ();
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}
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static CACChannelPrivate * pCACChannelPrivate = 0;
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// runs once only for each process
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extern "C" void cacChannelSetup ( void * )
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{
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pCACChannelPrivate = new CACChannelPrivate ();
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}
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// the default is to assume that it is a locally hosted channel
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unsigned cacChannel::getHostName (
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epicsGuard < epicsMutex > &,
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char * pBuf, unsigned bufLength ) const throw ()
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{
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if ( bufLength ) {
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epicsThreadOnce ( & cacChannelIdOnce, cacChannelSetup, 0);
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return pCACChannelPrivate->getHostName ( pBuf, bufLength );
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}
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return 0u;
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}
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// the default is to assume that it is a locally hosted channel
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const char * cacChannel::pHostName (
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epicsGuard < epicsMutex > & ) const throw ()
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{
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epicsThreadOnce ( & cacChannelIdOnce, cacChannelSetup, 0);
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return pCACChannelPrivate->pHostName ();
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}
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cacContext::~cacContext () {}
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cacService::~cacService () {}
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