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Adopt FairMQMessage backed memory resource collection from AliceO2
Add a pmr interface to FairMQTransportFactory refactor Port the unit tests for MemoryResources clang format
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/******************************************************************************** | ||
* Copyright (C) 2018 CERN and copyright holders of ALICE O2 * | ||
* Copyright (C) 2018 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH * | ||
* * | ||
* This software is distributed under the terms of the * | ||
* GNU Lesser General Public Licence (LGPL) version 3, * | ||
* copied verbatim in the file "LICENSE" * | ||
********************************************************************************/ | ||
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/// @brief Tools for interfacing containers to the transport via polymorphic | ||
/// allocators | ||
/// | ||
/// @author Mikolaj Krzewicki, mkrzewic@cern.ch | ||
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#include <fairmq/FairMQTransportFactory.h> | ||
#include <fairmq/MemoryResources.h> | ||
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namespace fair { | ||
namespace mq { | ||
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using ByteSpectatorAllocator = SpectatorAllocator<fair::mq::byte>; | ||
using BytePmrAllocator = boost::container::pmr::polymorphic_allocator<fair::mq::byte>; | ||
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//_________________________________________________________________________________________________ | ||
// return the message associated with the container or nullptr if it does not | ||
// make sense (e.g. when | ||
// we are just watching an existing message or when the container is not using | ||
// FairMQMemoryResource | ||
// as backend). | ||
template<typename ContainerT> | ||
// typename std::enable_if< | ||
// std::is_base_of< | ||
// boost::container::pmr::polymorphic_allocator<typename | ||
// ContainerT::value_type>, | ||
// typename ContainerT::allocator_type>::value == true, | ||
// FairMQMessagePtr>::type | ||
FairMQMessagePtr getMessage(ContainerT &&container_, FairMQMemoryResource *targetResource = nullptr) | ||
{ | ||
auto container = std::move(container_); | ||
auto alloc = container.get_allocator(); | ||
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auto resource = dynamic_cast<FairMQMemoryResource *>(alloc.resource()); | ||
if (!resource && !targetResource) { | ||
throw std::runtime_error("Neither the container or target resource specified"); | ||
} | ||
size_t containerSizeBytes = container.size() * sizeof(typename ContainerT::value_type); | ||
if ((!targetResource && resource) | ||
|| (resource && targetResource && resource->is_equal(*targetResource))) { | ||
auto message = resource->getMessage(static_cast<void *>( | ||
const_cast<typename std::remove_const<typename ContainerT::value_type>::type *>( | ||
container.data()))); | ||
if (message) | ||
message->SetUsedSize(containerSizeBytes); | ||
return std::move(message); | ||
} else { | ||
auto message = targetResource->getTransportFactory()->CreateMessage(containerSizeBytes); | ||
std::memcpy(static_cast<fair::mq::byte *>(message->GetData()), | ||
container.data(), | ||
containerSizeBytes); | ||
return std::move(message); | ||
} | ||
}; | ||
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//_________________________________________________________________________________________________ | ||
/// Return a vector of const ElemT, resource must be kept alive throughout the | ||
/// lifetime of the | ||
/// container and associated message. | ||
template<typename ElemT> | ||
std::vector<const ElemT, boost::container::pmr::polymorphic_allocator<const ElemT>> adoptVector( | ||
size_t nelem, | ||
SpectatorMessageResource *resource) | ||
{ | ||
return std::vector<const ElemT, SpectatorAllocator<const ElemT>>( | ||
nelem, SpectatorAllocator<ElemT>(resource)); | ||
}; | ||
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//_________________________________________________________________________________________________ | ||
/// Return a vector of const ElemT, takes ownership of the message, needs an | ||
/// upstream global | ||
/// ChannelResource to register the message. | ||
template<typename ElemT> | ||
std::vector<const ElemT, OwningMessageSpectatorAllocator<const ElemT>> | ||
adoptVector(size_t nelem, ChannelResource *upstream, FairMQMessagePtr message) | ||
{ | ||
return std::vector<const ElemT, OwningMessageSpectatorAllocator<const ElemT>>( | ||
nelem, | ||
OwningMessageSpectatorAllocator<const ElemT>( | ||
MessageResource{std::move(message), upstream})); | ||
}; | ||
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//_________________________________________________________________________________________________ | ||
// TODO: this is C++14, converting it down to C++11 is too much work atm | ||
// This returns a unique_ptr of const vector, does not allow modifications at | ||
// the cost of pointer | ||
// semantics for access. | ||
// use auto or decltype to catch the return value (or use span) | ||
// template<typename ElemT> | ||
// auto adoptVector(size_t nelem, FairMQMessage* message) | ||
//{ | ||
// using DataType = std::vector<ElemT, ByteSpectatorAllocator>; | ||
// | ||
// struct doubleDeleter | ||
// { | ||
// // kids: don't do this at home! (but here it's OK) | ||
// // this stateful deleter allows a single unique_ptr to manage 2 | ||
// resources at the same time. | ||
// std::unique_ptr<SpectatorMessageResource> extra; | ||
// void operator()(const DataType* ptr) { delete ptr; } | ||
// }; | ||
// | ||
// using OutputType = std::unique_ptr<const DataType, doubleDeleter>; | ||
// | ||
// auto resource = std::make_unique<SpectatorMessageResource>(message); | ||
// auto output = new DataType(nelem, ByteSpectatorAllocator{resource.get()}); | ||
// return OutputType(output, doubleDeleter{std::move(resource)}); | ||
//} | ||
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} /* namespace mq */ | ||
} /* namespace fair */ |
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/******************************************************************************** | ||
* Copyright (C) 2018 CERN and copyright holders of ALICE O2 * | ||
* Copyright (C) 2018 GSI Helmholtzzentrum fuer Schwerionenforschung GmbH * | ||
* * | ||
* This software is distributed under the terms of the * | ||
* GNU Lesser General Public Licence (LGPL) version 3, * | ||
* copied verbatim in the file "LICENSE" * | ||
********************************************************************************/ | ||
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/// @brief Memory allocators and interfaces related to managing memory via the | ||
/// trasport layer | ||
/// | ||
/// @author Mikolaj Krzewicki, mkrzewic@cern.ch | ||
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#include <fairmq/FairMQTransportFactory.h> | ||
#include <fairmq/MemoryResources.h> | ||
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void *fair::mq::ChannelResource::do_allocate(std::size_t bytes, std::size_t /*alignment*/) | ||
{ | ||
FairMQMessagePtr message; | ||
message = factory->CreateMessage(bytes); | ||
void *addr = message->GetData(); | ||
messageMap[addr] = std::move(message); | ||
return addr; | ||
}; |
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