FairMQ/examples/MQ/8-multipart/FairMQExample8Sampler.cxx
Alexey Rybalchenko da10c64800 Enable new callback API
- OnData() channel data handler.
 - ConditionalRun() for devices without incoming data.
 - Header file with common main(), to be extended with getDevice/addCustomOptions.
 - Update examples (MQ/Tutorial3) to use the new API and config.
 - NewSimpleMessage() for simpler creation of small messages (additional copy).
 - Replace SetProperty/GetProperty with fConfig access.
 - Runtime configurable channel names for common devices.
 - Configurable logging interval per channel.
 - FairMQMultiplier for distributing same data to multiple outputs.
 - Cleanup state machine messages.
 - Cmd option to toggle signal handling.
 - Simpler API for send/receive timeouts.
 - Enable --log-to-file.
 - Fix coverity issues, warnings.
 - Various code cleanup and minor tweaks.
2018-05-02 16:12:57 +02:00

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1.8 KiB
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/********************************************************************************
* Copyright (C) 2014 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH *
* *
* This software is distributed under the terms of the *
* GNU Lesser General Public Licence version 3 (LGPL) version 3, *
* copied verbatim in the file "LICENSE" *
********************************************************************************/
/**
* FairMQExample8Sampler.cpp
*
* @since 2014-10-10
* @author A. Rybalchenko
*/
#include <thread> // this_thread::sleep_for
#include <chrono>
#include "FairMQExample8Sampler.h"
#include "FairMQEx8Header.h"
#include "FairMQLogger.h"
using namespace std;
FairMQExample8Sampler::FairMQExample8Sampler()
: fCounter(0)
{
}
bool FairMQExample8Sampler::ConditionalRun()
{
// Wait a second to keep the output readable.
this_thread::sleep_for(chrono::seconds(1));
Ex8Header header;
// Set stopFlag to 1 for the first 4 messages, and to 0 for the 5th.
fCounter < 5 ? header.stopFlag = 0 : header.stopFlag = 1;
LOG(INFO) << "Sending header with stopFlag: " << header.stopFlag;
FairMQParts parts;
// NewSimpleMessage creates a copy of the data and takes care of its destruction (after the transfer takes place).
// Should only be used for small data because of the cost of an additional copy
parts.AddPart(NewSimpleMessage(header));
parts.AddPart(NewMessage(1000));
LOG(INFO) << "Sending body of size: " << parts.At(1)->GetSize();
Send(parts, "data-out");
// Go out of the sending loop if the stopFlag was sent.
if (fCounter++ == 5)
{
return false;
}
return true;
}
FairMQExample8Sampler::~FairMQExample8Sampler()
{
}