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136 lines (125 loc) · 4.16 KB
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/*
* Copyright information and license terms for this software can be
* found in the file LICENSE that is included with the distribution
*/
/**
* @author mrk
* @date 2013.08.09
*/
#include <epicsThread.h>
#include <pv/event.h>
#include <pv/standardPVField.h>
#include <pv/nt.h>
#include <pv/pvTimeStamp.h>
#include <pv/pvAlarm.h>
#include <pv/pvControl.h>
#include <pv/pvDisplay.h>
#include <pv/pvDatabase.h>
#include <pv/pvaClient.h>
#define epicsExportSharedSymbols
#include "pv/longArrayGet.h"
namespace epics { namespace exampleCPP { namespace arrayPerformance {
using namespace std;
using namespace epics::pvData;
using namespace epics::pvAccess;
using namespace epics::pvaClient;
LongArrayGet::LongArrayGet(
string channelName,
int iterBetweenCreateChannel,
int iterBetweenCreateChannelGet,
double delayTime)
:
channelName(channelName),
iterBetweenCreateChannel(iterBetweenCreateChannel),
iterBetweenCreateChannelGet(iterBetweenCreateChannelGet),
delayTime(delayTime)
{
thread = EpicsThreadPtr(new epicsThread(
*this,
"longArrayGet",
epicsThreadGetStackSize(epicsThreadStackSmall),
epicsThreadPriorityLow));
thread->start();
}
void LongArrayGet::stop()
{
runStop.signal();
runReturn.wait();
}
void LongArrayGet::run()
{
PvaClientPtr pva(PvaClient::get("pva"));
PvaClientChannelPtr pvaChannel(pva->createChannel(channelName));
PvaClientGetPtr pvaGet(pvaChannel->createGet("value,alarm,timeStamp"));
TimeStamp timeStamp;
TimeStamp timeStampLast;
timeStampLast.getCurrent();
int numChannelGet = 0;
int numChannelCreate = 0;
size_t nElements = 0;
while(true) {
if(runStop.tryWait()) {
runReturn.signal();
return;
}
pvaGet->get();
PvaClientGetDataPtr pvaData = pvaGet->getData();
PVStructurePtr pvStructure = pvaData->getPVStructure();
BitSetPtr bitSet = pvaData->getChangedBitSet();
PVLongArrayPtr pvValue = pvStructure->getSubField<PVLongArray>("value");
shared_vector<const int64> data = pvValue->view();
size_t len = data.size();
if(len>0) {
int64 first = data[0];
int64 last = data[data.size()-1];
if(first!=last) {
cout << "error first=" << first << " last=" << last << endl;
}
}
nElements += len;
timeStamp.getCurrent();
double diff = TimeStamp::diff(timeStamp,timeStampLast);
if(diff>=1.0) {
ostringstream out;
out << "get";
double elementsPerSec = nElements;
elementsPerSec /= diff;
if(elementsPerSec>10.0e9) {
elementsPerSec /= 1e9;
out << " gigaElements/sec " << elementsPerSec;
} else if(elementsPerSec>10.0e6) {
elementsPerSec /= 1e6;
out << " megaElements/sec " << elementsPerSec;
} else if(elementsPerSec>10.0e3) {
elementsPerSec /= 1e3;
out << " kiloElements/sec " << elementsPerSec;
} else {
out << " Elements/sec " << elementsPerSec;
}
if(iterBetweenCreateChannelGet!=0) out << " numChannelGet " << numChannelGet;
if(iterBetweenCreateChannel!=0) out << " numChannelCreate " << numChannelCreate;
cout << out.str() << endl;
timeStampLast = timeStamp;
nElements = 0;
}
if(delayTime>0.0) epicsThreadSleep(delayTime);
++numChannelGet;
bool createGet = false;
if(iterBetweenCreateChannelGet!=0) {
if(numChannelGet>=iterBetweenCreateChannelGet) createGet = true;
}
if(createGet) {
pvaGet = pvaChannel->createGet("value,timeStamp,alarm");
numChannelGet = 0;
}
++numChannelCreate;
if(iterBetweenCreateChannel!=0) {
if(numChannelCreate>=iterBetweenCreateChannel) {
pvaChannel = pva->createChannel(channelName);
pvaGet = pvaChannel->createGet("value,timeStamp,alarm");
numChannelCreate = 0;
}
}
}
}
}}}