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Callbacks are called when the data buffer of the message assiciated with the corresponding region is no longer needed by the transport. Example in examples/advanced/Region/
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 version 3 (LGPL) version 3, *
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* copied verbatim in the file "LICENSE" *
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********************************************************************************/
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#ifndef FAIRMQMESSAGESHM_H_
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#define FAIRMQMESSAGESHM_H_
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#include <cstddef> // size_t
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#include <string>
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#include <atomic>
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#include <zmq.h>
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#include <boost/interprocess/mapped_region.hpp>
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#include "FairMQMessage.h"
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#include "FairMQUnmanagedRegion.h"
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#include "Manager.h"
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class FairMQMessageSHM : public FairMQMessage
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{
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friend class FairMQSocketSHM;
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public:
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FairMQMessageSHM(fair::mq::shmem::Manager& manager);
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FairMQMessageSHM(fair::mq::shmem::Manager& manager, const size_t size);
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FairMQMessageSHM(fair::mq::shmem::Manager& manager, void* data, const size_t size, fairmq_free_fn* ffn, void* hint = nullptr);
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FairMQMessageSHM(fair::mq::shmem::Manager& manager, FairMQUnmanagedRegionPtr& region, void* data, const size_t size);
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FairMQMessageSHM(const FairMQMessageSHM&) = delete;
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FairMQMessageSHM operator=(const FairMQMessageSHM&) = delete;
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bool InitializeChunk(const size_t size);
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void Rebuild() override;
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void Rebuild(const size_t size) override;
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void Rebuild(void* data, const size_t size, fairmq_free_fn* ffn, void* hint = nullptr) override;
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void* GetMessage() override;
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void* GetData() override;
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size_t GetSize() override;
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void SetMessage(void* data, const size_t size) override;
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FairMQ::Transport GetType() const override;
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void Copy(const std::unique_ptr<FairMQMessage>& msg) override;
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void CloseMessage();
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~FairMQMessageSHM() override;
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private:
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fair::mq::shmem::Manager& fManager;
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zmq_msg_t fMessage;
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bool fQueued;
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bool fMetaCreated;
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static std::atomic<bool> fInterrupted;
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static FairMQ::Transport fTransportType;
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uint64_t fRegionId;
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boost::interprocess::managed_shared_memory::handle_t fHandle;
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size_t fSize;
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void* fLocalPtr;
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};
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#endif /* FAIRMQMESSAGESHM_H_ */
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