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https://github.com/FairRootGroup/FairMQ.git
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eddfd0d1bd
Session name is given to each device via `--session`, which must be synchronized from a higher level, e.g. from start script or command & control entity.
122 lines
3.9 KiB
C++
122 lines
3.9 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 version 3 (LGPL) version 3, *
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* copied verbatim in the file "LICENSE" *
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********************************************************************************/
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#include "Region.h"
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#include "Common.h"
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#include "Manager.h"
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#include <boost/date_time/posix_time/posix_time.hpp>
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#include <chrono>
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namespace fair
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{
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namespace mq
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{
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namespace shmem
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{
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using namespace std;
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namespace bipc = boost::interprocess;
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namespace bpt = boost::posix_time;
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Region::Region(Manager& manager, uint64_t id, uint64_t size, bool remote, FairMQRegionCallback callback)
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: fManager(manager)
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, fRemote(remote)
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, fStop(false)
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, fName("fmq_shm_" + fManager.fSessionName +"_region_" + to_string(id))
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, fQueueName("fmq_shm_" + fManager.fSessionName +"_region_queue_" + to_string(id))
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, fShmemObject()
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, fQueue(nullptr)
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, fWorker()
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, fCallback(callback)
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{
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if (fRemote)
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{
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fShmemObject = bipc::shared_memory_object(bipc::open_only, fName.c_str(), bipc::read_write);
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LOG(DEBUG) << "shmem: located remote region: " << fName;
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fQueue = fair::mq::tools::make_unique<bipc::message_queue>(bipc::open_only, fQueueName.c_str());
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LOG(DEBUG) << "shmem: located remote region queue: " << fQueueName;
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}
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else
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{
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fShmemObject = bipc::shared_memory_object(bipc::create_only, fName.c_str(), bipc::read_write);
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LOG(DEBUG) << "shmem: created region: " << fName;
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fShmemObject.truncate(size);
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fQueue = fair::mq::tools::make_unique<bipc::message_queue>(bipc::create_only, fQueueName.c_str(), 10000, sizeof(RegionBlock));
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LOG(DEBUG) << "shmem: created region queue: " << fQueueName;
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}
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fRegion = bipc::mapped_region(fShmemObject, bipc::read_write); // TODO: add HUGEPAGES flag here
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// fRegion = bipc::mapped_region(fShmemObject, bipc::read_write, 0, 0, 0, MAP_HUGETLB | MAP_HUGE_1GB);
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}
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void Region::StartReceivingAcks()
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{
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fWorker = std::thread(&Region::ReceiveAcks, this);
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}
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void Region::ReceiveAcks()
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{
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unsigned int priority;
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bipc::message_queue::size_type recvdSize;
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while (!fStop) // end thread condition (should exist until region is destroyed)
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{
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auto rcvTill = bpt::microsec_clock::universal_time() + bpt::milliseconds(200);
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RegionBlock block;
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if (fQueue->timed_receive(&block, sizeof(RegionBlock), recvdSize, priority, rcvTill))
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{
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// LOG(DEBUG) << "received: " << block.fHandle << " " << block.fSize << " " << block.fMessageId;
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if (fCallback)
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{
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fCallback(reinterpret_cast<char*>(fRegion.get_address()) + block.fHandle, block.fSize);
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}
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}
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else
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{
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// LOG(DEBUG) << "queue " << fQueueName << " timeout!";
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}
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} // while !fStop
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LOG(DEBUG) << "worker for " << fName << " leaving.";
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}
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Region::~Region()
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{
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if (!fRemote)
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{
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fStop = true;
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if (fWorker.joinable())
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{
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fWorker.join();
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}
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if (bipc::shared_memory_object::remove(fName.c_str()))
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{
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LOG(DEBUG) << "shmem: destroyed region " << fName;
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}
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if (bipc::message_queue::remove(fQueueName.c_str()))
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{
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LOG(DEBUG) << "shmem: removed region queue " << fName;
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}
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}
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else
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{
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// LOG(DEBUG) << "shmem: region '" << fName << "' is remote, no cleanup necessary.";
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LOG(DEBUG) << "shmem: region queue '" << fQueueName << "' is remote, no cleanup necessary";
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}
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}
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} // namespace shmem
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} // namespace mq
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} // namespace fair
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