83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
/* pvTimeStamp.cpp */
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/**
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* Copyright - See the COPYRIGHT that is included with this distribution.
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* EPICS pvData 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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* @author mrk
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*/
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#include <string>
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#include <stdexcept>
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#include <pv/pvType.h>
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#include <pv/timeStamp.h>
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#include <pv/pvData.h>
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#include <pv/pvTimeStamp.h>
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namespace epics { namespace pvData {
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using std::tr1::static_pointer_cast;
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static String noTimeStamp("No timeStamp structure found");
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static String notAttached("Not attached to a timeStamp structure");
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bool PVTimeStamp::attach(PVFieldPtr const & pvField)
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{
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if(pvField->getField()->getType()!=structure) {
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pvField->message(noTimeStamp,errorMessage);
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return false;
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}
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PVStructurePtr xxx = static_pointer_cast<PVStructure>(pvField);
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PVStructure* pvStructure = xxx.get();
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while(true) {
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PVLongPtr pvLong = pvStructure->getLongField("secondsPastEpoch");
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if(pvLong.get()!=NULL) {
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pvSecs = pvLong;
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pvNano = pvStructure->getIntField("nanoSeconds");
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pvUserTag = pvStructure->getIntField("userTag");
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}
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if(pvSecs.get()!=NULL
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&& pvNano.get()!=NULL
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&& pvUserTag.get()!=NULL) return true;
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detach();
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// look up the tree for a timeSyamp
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pvStructure = pvStructure->getParent();
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if(pvStructure==NULL) break;
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}
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return false;
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}
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void PVTimeStamp::detach()
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{
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pvSecs.reset();
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pvUserTag.reset();
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pvNano.reset();
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}
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bool PVTimeStamp::isAttached() {
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if(pvSecs.get()==NULL) return false;
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return true;
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}
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void PVTimeStamp::get(TimeStamp & timeStamp) const
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{
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if(pvSecs.get()==NULL) {
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throw std::logic_error(notAttached);
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}
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timeStamp.put(pvSecs->get(),pvNano->get());
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timeStamp.setUserTag(pvUserTag->get());
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}
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bool PVTimeStamp::set(TimeStamp const & timeStamp)
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{
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if(pvSecs.get()==NULL) {
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throw std::logic_error(notAttached);
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}
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if(pvSecs->isImmutable() || pvNano->isImmutable()) return false;
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pvSecs->put(timeStamp.getSecondsPastEpoch());
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pvUserTag->put(timeStamp.getUserTag());
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pvNano->put(timeStamp.getNanoSeconds());
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return true;
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}
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}}
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