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author | David Monahan <David.Monahan@arm.com> | 2021-11-04 16:31:46 +0000 |
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committer | TeresaARM <teresa.charlinreyes@arm.com> | 2021-11-05 17:23:24 +0000 |
commit | 6642b8a1f23c5f7333abf1133983eb3134af7c00 (patch) | |
tree | 01a37677720ee4e959367f53b7873322721adbba /src/backends/cl/ClBackendDefaultAllocator.hpp | |
parent | 0f13284d702b3a37f56ffce1412867b5ad9eda89 (diff) | |
download | armnn-6642b8a1f23c5f7333abf1133983eb3134af7c00.tar.gz |
IVGCVSW-6412 Implement CLBackend ICustomAllocator
* Added implementation of ClBackendDefaultAllocator
* Added back in some pure virtual functions that were mistakenly removed from the CustomMemoryAllocatorSample
* Added a new Gralloc MemorySource for memory which originates from the gpu
* Added unittests
Signed-off-by: David Monahan <David.Monahan@arm.com>
Change-Id: Id2abb33d82697df36426f5709756c616af3e8ed7
Diffstat (limited to 'src/backends/cl/ClBackendDefaultAllocator.hpp')
-rw-r--r-- | src/backends/cl/ClBackendDefaultAllocator.hpp | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/backends/cl/ClBackendDefaultAllocator.hpp b/src/backends/cl/ClBackendDefaultAllocator.hpp new file mode 100644 index 0000000000..300f560000 --- /dev/null +++ b/src/backends/cl/ClBackendDefaultAllocator.hpp @@ -0,0 +1,47 @@ +// +// Copyright © 2021 Arm Ltd and Contributors. All rights reserved. +// SPDX-License-Identifier: MIT +// +#pragma once +#include <cstddef> +#include <memory> +#include <armnn/MemorySources.hpp> +#include <armnn/utility/IgnoreUnused.hpp> + +namespace armnn +{ +/** Default Memory Allocator class returned from IBackendInternal::GetDefaultAllocator(MemorySource) */ +class ClBackendDefaultAllocator : public armnn::ICustomAllocator +{ +public: + ClBackendDefaultAllocator() = default; + + void* allocate(size_t size, size_t alignment = 0) override + { + IgnoreUnused(alignment); + cl_mem buf{ clCreateBuffer(arm_compute::CLScheduler::get().context().get(), + CL_MEM_ALLOC_HOST_PTR | CL_MEM_READ_WRITE, + size, + nullptr, + nullptr)}; + return static_cast<void *>(buf); + } + + void free(void* ptr) override + { + ARM_COMPUTE_ERROR_ON(ptr == nullptr); + clReleaseMemObject(static_cast<cl_mem>(ptr)); + } + + armnn::MemorySource GetMemorySourceType() override + { + return armnn::MemorySource::Gralloc; + } + + void* GetMemoryRegionAtOffset(void* buffer, size_t offset, size_t alignment = 0) override + { + IgnoreUnused(alignment); + return static_cast<char*>(buffer) + offset; + } +}; +} // namespace armnn
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