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117 lines
4.1 KiB
C++
117 lines
4.1 KiB
C++
/********************************************************************************
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* Copyright (C) 2020 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
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* *
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* This software is distributed under the terms of the *
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* GNU Lesser General Public Licence (LGPL) version 3, *
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* copied verbatim in the file "LICENSE" *
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********************************************************************************/
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#include "Header.h"
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#include <fairmq/Device.h>
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#include <fairmq/runDevice.h>
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#include <string>
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#include <iomanip>
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#include <chrono>
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#include <string>
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#include <unordered_map>
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#include <unordered_set>
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using namespace std;
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using namespace example_n_m;
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namespace bpo = boost::program_options;
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struct TFBuffer
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{
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FairMQParts parts;
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chrono::steady_clock::time_point start;
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chrono::steady_clock::time_point end;
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};
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class Receiver : public FairMQDevice
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{
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public:
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Receiver()
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{
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OnData("data", &Receiver::HandleData);
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}
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~Receiver() = default;
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void InitTask() override
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{
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fNumSenders = GetConfig()->GetValue<int>("num-senders");
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fBufferTimeoutInMs = GetConfig()->GetValue<int>("buffer-timeout");
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fMaxTimeframes = GetConfig()->GetValue<int>("max-timeframes");
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}
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protected:
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bool HandleData(FairMQParts& parts, int /* index */)
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{
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Header& h = *(static_cast<Header*>(parts.At(0)->GetData()));
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// LOG(info) << "Received sub-time frame #" << h.id << " from Sender" << h.senderIndex;
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if (fDiscardedSet.find(h.id) == fDiscardedSet.end()) {
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if (fBuffer.find(h.id) == fBuffer.end()) {
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// if this is the first part with this ID, save the receive time.
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fBuffer[h.id].start = chrono::steady_clock::now();
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}
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// if the received ID has not previously been discarded, store the data part in the buffer
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fBuffer[h.id].parts.AddPart(move(parts.At(1)));
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} else {
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// if received ID has been previously discarded.
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LOG(debug) << "Received part from an already discarded timeframe with id " << h.id;
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}
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if (fBuffer[h.id].parts.Size() == fNumSenders) {
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LOG(info) << "Successfully completed timeframe #" << h.id;
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fBuffer.erase(h.id);
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if (fMaxTimeframes > 0 && ++fTimeframeCounter >= fMaxTimeframes) {
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LOG(info) << "Reached configured maximum number of timeframes (" << fMaxTimeframes << "). Exiting RUNNING state.";
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return false;
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}
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}
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return true;
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}
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void DiscardIncompleteTimeframes()
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{
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auto it = fBuffer.begin();
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while (it != fBuffer.end()) {
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if (chrono::duration_cast<chrono::milliseconds>(chrono::steady_clock::now() - (it->second).start).count() > fBufferTimeoutInMs) {
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LOG(debug) << "Timeframe #" << it->first << " incomplete after " << fBufferTimeoutInMs << " milliseconds, discarding";
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fDiscardedSet.insert(it->first);
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fBuffer.erase(it++);
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LOG(debug) << "Number of discarded timeframes: " << fDiscardedSet.size();
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} else {
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// LOG(info) << "Timeframe #" << it->first << " within timeout, buffering...";
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++it;
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}
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}
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}
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unordered_map<uint16_t, TFBuffer> fBuffer;
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unordered_set<uint16_t> fDiscardedSet;
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int fNumSenders = 0;
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int fBufferTimeoutInMs = 5000;
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int fMaxTimeframes = 0;
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int fTimeframeCounter = 0;
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};
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void addCustomOptions(bpo::options_description& options)
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{
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options.add_options()
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("buffer-timeout", bpo::value<int>()->default_value(1000), "Buffer timeout in milliseconds")
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("num-senders", bpo::value<int>()->required(), "Number of senders")
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("max-timeframes", bpo::value<int>()->default_value(0), "Maximum number of timeframes to receive (0 - unlimited)");
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}
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std::unique_ptr<fair::mq::Device> getDevice(FairMQProgOptions& /* config */)
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{
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return std::make_unique<Receiver>();
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}
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