mirror of
https://github.com/FairRootGroup/FairMQ.git
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70 lines
2.3 KiB
C++
70 lines
2.3 KiB
C++
/********************************************************************************
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* Copyright (C) 2014 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 <fairmq/Device.h>
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#include <fairmq/runDevice.h>
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#include <chrono>
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#include <cstdint> // uint64_t
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#include <thread> // this_thread::sleep_for
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namespace bpo = boost::program_options;
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class Sampler : public FairMQDevice
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{
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public:
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Sampler() = default;
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protected:
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void InitTask() override
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{
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fNumDataChannels = fChannels.at("data").size();
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fMaxIterations = fConfig->GetProperty<uint64_t>("max-iterations");
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}
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bool ConditionalRun() override
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{
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// NewSimpleMessage creates a copy of the data and takes care of its destruction (after the transfer takes place).
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// Should only be used for small data because of the cost of an additional copy
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FairMQMessagePtr msg(NewSimpleMessage(fCounter++));
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for (int i = 0; i < fNumDataChannels - 1; ++i) {
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FairMQMessagePtr msgCopy(NewMessage());
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msgCopy->Copy(*msg);
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Send(msgCopy, "data", i);
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}
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Send(msg, "data", fNumDataChannels - 1);
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if (fMaxIterations > 0 && ++fNumIterations >= fMaxIterations) {
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LOG(info) << "Configured maximum number of iterations reached. Leaving RUNNING state.";
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return false;
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}
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std::this_thread::sleep_for(std::chrono::seconds(1));
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return true;
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}
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int fNumDataChannels = 0;
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uint64_t fCounter = 0;
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uint64_t fMaxIterations = 0;
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uint64_t fNumIterations = 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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("max-iterations", bpo::value<uint64_t>()->default_value(0), "Maximum number of iterations of Run/ConditionalRun/OnData (0 - infinite)");
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}
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std::unique_ptr<fair::mq::Device> getDevice(fair::mq::ProgOptions& /*config*/)
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{
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return std::make_unique<Sampler>();
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}
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