mirror of
https://github.com/FairRootGroup/FairMQ.git
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117 lines
3.3 KiB
C++
117 lines
3.3 KiB
C++
/********************************************************************************
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* Copyright (C) 2018 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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#ifndef FAIR_MQ_OFI_CONTROLMESSAGES_H
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#define FAIR_MQ_OFI_CONTROLMESSAGES_H
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#include <FairMQLogger.h>
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#include <boost/asio/buffer.hpp>
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#include <boost/container/pmr/memory_resource.hpp>
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#include <cstdint>
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#include <functional>
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#include <memory>
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#include <type_traits>
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namespace boost {
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namespace asio {
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template<typename PodType>
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auto buffer(const PodType& obj) -> boost::asio::const_buffer
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{
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return boost::asio::const_buffer(static_cast<const void*>(&obj), sizeof(PodType));
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}
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} // namespace asio
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} // namespace boost
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namespace fair {
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namespace mq {
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namespace ofi {
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enum class ControlMessageType
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{
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Empty = 1,
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PostBuffer,
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PostMultiPartStartBuffer
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};
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struct Empty
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{};
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struct PostBuffer
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{
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uint64_t size; // buffer size (size_t)
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};
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struct PostMultiPartStartBuffer
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{
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uint32_t numParts; // buffer size (size_t)
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uint64_t size; // buffer size (size_t)
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};
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union ControlMessageContent
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{
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PostBuffer postBuffer;
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PostMultiPartStartBuffer postMultiPartStartBuffer;
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};
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struct ControlMessage
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{
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ControlMessageType type;
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ControlMessageContent msg;
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};
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template<typename T>
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using unique_ptr = std::unique_ptr<T, std::function<void(T*)>>;
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template<typename T, typename... Args>
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auto MakeControlMessageWithPmr(boost::container::pmr::memory_resource& pmr, Args&&... args)
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-> ofi::unique_ptr<ControlMessage>
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{
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void* mem = pmr.allocate(sizeof(ControlMessage));
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ControlMessage* ctrl = new (mem) ControlMessage();
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if (std::is_same<T, PostBuffer>::value) {
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ctrl->type = ControlMessageType::PostBuffer;
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ctrl->msg.postBuffer = PostBuffer(std::forward<Args>(args)...);
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} else if (std::is_same<T, PostMultiPartStartBuffer>::value) {
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ctrl->type = ControlMessageType::PostMultiPartStartBuffer;
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ctrl->msg.postMultiPartStartBuffer = PostMultiPartStartBuffer(std::forward<Args>(args)...);
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} else if (std::is_same<T, Empty>::value) {
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ctrl->type = ControlMessageType::Empty;
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}
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return ofi::unique_ptr<ControlMessage>(ctrl, [&pmr](ControlMessage* p) {
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p->~ControlMessage();
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pmr.deallocate(p, sizeof(T));
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});
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}
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template<typename T, typename... Args>
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auto MakeControlMessage(Args&&... args) -> ControlMessage
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{
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ControlMessage ctrl;
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if (std::is_same<T, PostBuffer>::value) {
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ctrl.type = ControlMessageType::PostBuffer;
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} else if (std::is_same<T, PostMultiPartStartBuffer>::value) {
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ctrl.type = ControlMessageType::PostMultiPartStartBuffer;
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} else if (std::is_same<T, Empty>::value) {
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ctrl.type = ControlMessageType::Empty;
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}
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ctrl.msg = T(std::forward<Args>(args)...);
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return ctrl;
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}
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} // namespace ofi
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} // namespace mq
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} // namespace fair
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#endif /* FAIR_MQ_OFI_CONTROLMESSAGES_H */
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