98 lines
2.5 KiB
C++
98 lines
2.5 KiB
C++
/* pvTimeStamp.cpp */
|
|
/*
|
|
* Copyright information and license terms for this software can be
|
|
* found in the file LICENSE that is included with the distribution
|
|
*/
|
|
/**
|
|
* @author mrk
|
|
*/
|
|
#include <string>
|
|
#include <stdexcept>
|
|
|
|
#define epicsExportSharedSymbols
|
|
#include <pv/pvType.h>
|
|
#include <pv/timeStamp.h>
|
|
#include <pv/pvData.h>
|
|
#include <pv/pvTimeStamp.h>
|
|
|
|
using std::tr1::static_pointer_cast;
|
|
using std::string;
|
|
|
|
namespace epics { namespace pvData {
|
|
|
|
string PVTimeStamp::noTimeStamp("No timeStamp structure found");
|
|
string PVTimeStamp::notAttached("Not attached to a timeStamp structure");
|
|
|
|
bool PVTimeStamp::attach(PVFieldPtr const & pvField)
|
|
{
|
|
if(pvField->getField()->getType()!=structure) return false;
|
|
PVStructurePtr xxx = static_pointer_cast<PVStructure>(pvField);
|
|
PVStructure* pvStructure = xxx.get();
|
|
while(true) {
|
|
PVLongPtr pvLong = pvStructure->getSubField<PVLong>("secondsPastEpoch");
|
|
if(pvLong) {
|
|
pvSecs = pvLong;
|
|
pvNano = pvStructure->getSubField<PVInt>("nanoseconds");
|
|
pvUserTag = pvStructure->getSubField<PVInt>("userTag");
|
|
}
|
|
if(pvSecs
|
|
&& pvNano
|
|
&& pvUserTag) return true;
|
|
detach();
|
|
// look up the tree for a timeSyamp
|
|
pvStructure = pvStructure->getParent();
|
|
if(pvStructure==NULL) break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void PVTimeStamp::detach()
|
|
{
|
|
pvSecs.reset();
|
|
pvUserTag.reset();
|
|
pvNano.reset();
|
|
}
|
|
|
|
bool PVTimeStamp::isAttached() {
|
|
if(pvSecs.get()==NULL) return false;
|
|
return true;
|
|
}
|
|
|
|
void PVTimeStamp::get(TimeStamp & timeStamp) const
|
|
{
|
|
if(pvSecs.get()==NULL) {
|
|
throw std::logic_error(notAttached);
|
|
}
|
|
timeStamp.put(pvSecs->get(),pvNano->get());
|
|
timeStamp.setUserTag(pvUserTag->get());
|
|
}
|
|
|
|
bool PVTimeStamp::set(TimeStamp const & timeStamp)
|
|
{
|
|
if(pvSecs.get()==NULL) {
|
|
throw std::logic_error(notAttached);
|
|
}
|
|
if(pvSecs->isImmutable() || pvNano->isImmutable()) return false;
|
|
TimeStamp current;
|
|
get(current);
|
|
bool returnValue = false;
|
|
if(current.getSecondsPastEpoch()!=timeStamp.getSecondsPastEpoch())
|
|
{
|
|
pvSecs->put(timeStamp.getSecondsPastEpoch());
|
|
returnValue = true;
|
|
}
|
|
if(current.getNanoseconds()!=timeStamp.getNanoseconds())
|
|
{
|
|
pvNano->put(timeStamp.getNanoseconds());
|
|
returnValue = true;
|
|
}
|
|
if(current.getUserTag()!=timeStamp.getUserTag())
|
|
{
|
|
pvUserTag->put(timeStamp.getUserTag());
|
|
returnValue = true;
|
|
}
|
|
return returnValue;
|
|
}
|
|
|
|
}}
|