Avinash Kethineedi
f6ef19f5a9
* Update copyright information and add SPDX license identifier * Update AUTHORS * Remove `sos_tests`
136 строки
3.6 KiB
C++
136 строки
3.6 KiB
C++
/******************************************************************************
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* Copyright (c) Advanced Micro Devices, Inc. All rights reserved.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*****************************************************************************/
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#ifndef LIBRARY_SRC_MEMORY_HEAP_MEMORY_HPP_
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#define LIBRARY_SRC_MEMORY_HEAP_MEMORY_HPP_
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#include <cassert>
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#include <memory>
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#include <utility>
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/**
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* @file heap_memory.hpp
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*
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* @brief Contains heap memory class
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*
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* @note The heap memory class owns the symmetric heap memory allocation
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*/
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namespace rocshmem {
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template <typename ALLOCATOR>
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class HeapMemory {
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public:
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/**
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* @brief Primary constructor type
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*
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* Uses default heap size specified in class body.
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*/
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HeapMemory() : HeapMemory(gibibyte_) {}
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/**
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* @brief Secondary constructor type
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*
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* @param[in] User-specified size used as heap size
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*/
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explicit HeapMemory(size_t size) : size_{size} {
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char* temp;
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allocator_.allocate(reinterpret_cast<void**>(&temp), size_);
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assert(temp);
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std::unique_ptr<char, Deleter> up{temp};
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up_ = std::move(up);
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/*
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* Set a c-style ptr for access by the device.
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*/
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ptr_ = up_.get();
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}
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/**
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* @brief Accessor for heap ptr
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*
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* @return Raw memory pointer
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*/
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__host__ __device__ char* get_ptr() { return ptr_; }
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/**
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* @brief Accessor for heap size
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*
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* @return Heap size
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*/
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__host__ __device__ size_t get_size() { return size_; }
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/**
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* @brief Returns is the heap is allocated with managed memory
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*
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* @return bool
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*/
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bool is_managed() { return allocator_.is_managed(); }
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private:
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/**
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* @brief Template type member with allocate and deallocate methods.
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*/
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ALLOCATOR allocator_{};
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/**
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* @brief Wrap deallocator into a functor for up_ template.
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*/
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class Deleter {
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public:
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void operator()(void* x) { a_.deallocate(x); }
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private:
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ALLOCATOR a_;
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};
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/**
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* @brief Owning pointer to heap memory.
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*/
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std::unique_ptr<char, Deleter> up_{nullptr};
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/**
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* @brief Named constant for a gibibyte.
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*/
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static constexpr size_t gibibyte_{1 << 30};
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/**
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* @brief Size of heap memory.
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*/
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size_t size_{gibibyte_};
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/**
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* @brief A handle to access the internal memory.
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*
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* In general, device code cannot access standard library routines
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* like std::unique_ptr::get(). Circumvent this problem by caching
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* the pointer manually in this class.
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*/
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char* ptr_{nullptr};
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};
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} // namespace rocshmem
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#endif // LIBRARY_SRC_MEMORY_HEAP_MEMORY_HPP_
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