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/* ************************************************************************
* Copyright (C) 2018-2022 Advanced Micro Devices, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell cop-
* ies of the Software, and to permit persons to whom the Software is furnished
* to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IM-
* PLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNE-
* CTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* ************************************************************************ */
#pragma once
#include <hip/hip_runtime.h>
//!
//! @brief Allocator which requests pinned host memory via hipHostMalloc.
//! This class can be removed once hipHostRegister has been proven equivalent
//!
template <class T>
struct pinned_memory_allocator
{
using value_type = T;
pinned_memory_allocator() = default;
template <class U>
pinned_memory_allocator(const pinned_memory_allocator<U>&)
{
}
T* allocate(std::size_t n)
{
T* ptr;
hipError_t status = hipHostMalloc(&ptr, sizeof(T) * n, hipHostMallocDefault);
if(status != hipSuccess)
{
ptr = nullptr;
rocblas_cerr << "rocBLAS pinned_memory_allocator failed to allocate memory: "
<< hipGetErrorString(status) << std::endl;
// exception same as host_alloc helper
throw std::bad_alloc{};
}
return ptr;
}
void deallocate(T* ptr, std::size_t n)
{
hipError_t status = hipHostFree(ptr);
if(status != hipSuccess)
{
rocblas_cerr << "rocBLAS pinned_memory_allocator failed to free memory: "
<< hipGetErrorString(status) << std::endl;
}
}
};
template <class T, class U>
constexpr bool operator==(const pinned_memory_allocator<T>&, const pinned_memory_allocator<U>&)
{
return true;
}
template <class T, class U>
constexpr bool operator!=(const pinned_memory_allocator<T>&, const pinned_memory_allocator<U>&)
{
return false;
}
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