78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
#include <dbAccess.h>
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#include <epicsAtomic.h>
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#include "pdbsingle.h"
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#include "pdb.h"
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namespace pvd = epics::pvData;
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namespace pva = epics::pvAccess;
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size_t PDBSinglePV::ninstances;
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PDBSinglePV::PDBSinglePV(DBCH& chan,
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const PDBProvider::shared_pointer& prov)
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:provider(prov)
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{
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this->chan.swap(chan);
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fielddesc = PVIF::dtype(this->chan);
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epics::atomic::increment(ninstances);
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}
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PDBSinglePV::~PDBSinglePV()
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{
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epics::atomic::decrement(ninstances);
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}
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pva::Channel::shared_pointer
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PDBSinglePV::connect(const std::tr1::shared_ptr<PDBProvider>& prov,
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const pva::ChannelRequester::shared_pointer& req)
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{
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pva::Channel::shared_pointer ret(new PDBSingleChannel(shared_from_this(), req));
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return ret;
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}
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PDBSingleChannel::PDBSingleChannel(const PDBSinglePV::shared_pointer& pv,
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const pva::ChannelRequester::shared_pointer& req)
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:BaseChannel(dbChannelName(pv->chan), pv->provider, req, pv->fielddesc)
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,pv(pv)
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{
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}
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void PDBSingleChannel::printInfo(std::ostream& out)
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{
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out<<"PDB single : "<<pvname<<"\n";
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}
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pva::ChannelGet::shared_pointer
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PDBSingleChannel::createChannelGet(
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pva::ChannelGetRequester::shared_pointer const & requester,
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pvd::PVStructure::shared_pointer const & pvRequest)
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{
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pva::ChannelGet::shared_pointer ret(new PDBSingleGet(shared_from_this(), requester));
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requester->channelGetConnect(pvd::Status(), ret, fielddesc);
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return ret;
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}
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PDBSingleGet::PDBSingleGet(PDBSingleChannel::shared_pointer channel,
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pva::ChannelGetRequester::shared_pointer requester)
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:channel(channel)
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,requester(requester)
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,changed(new pvd::BitSet(channel->fielddesc->getNumberFields()))
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,pvf(pvd::getPVDataCreate()->createPVStructure(channel->fielddesc))
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,pvif(PVIF::attach(channel->pv->chan, pvf))
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{}
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void PDBSingleGet::get()
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{
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changed->clear();
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{
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DBScanLocker L(channel->pv->chan);
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pvif->put(*changed, DBE_VALUE|DBE_ALARM|DBE_PROPERTY, NULL);
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}
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//TODO: report unused fields as changed?
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changed->clear();
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changed->set(0);
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requester->getDone(pvd::Status(), shared_from_this(), pvf, changed);
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}
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