wehub-resource-sync
144 lines
5.0 KiB
C++
144 lines
5.0 KiB
C++
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include "tensorflow/lite/delegates/gpu/cl/buffer.h"
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#include <string>
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#include "absl/status/status.h"
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#include "tensorflow/lite/delegates/gpu/common/data_type.h"
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#include "tensorflow/lite/delegates/gpu/common/status.h"
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namespace tflite {
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namespace gpu {
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namespace cl {
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namespace {
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absl::Status CreateBuffer(size_t size_in_bytes, bool gpu_read_only,
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const void* data, CLContext* context,
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Buffer* result) {
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cl_mem buffer;
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RETURN_IF_ERROR(CreateCLBuffer(context->context(), size_in_bytes,
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gpu_read_only, const_cast<void*>(data),
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&buffer));
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*result = Buffer(buffer, size_in_bytes);
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return absl::OkStatus();
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}
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absl::Status CreateSubBuffer(const Buffer& parent, size_t origin_in_bytes,
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size_t size_in_bytes, bool gpu_read_only,
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CLContext* context, Buffer* result) {
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cl_mem buffer;
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if (parent.IsSubBuffer()) {
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return absl::InvalidArgumentError(
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"Cannot create a sub-buffer from a sub-buffer!");
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}
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RETURN_IF_ERROR(CreateCLSubBuffer(context->context(), parent.GetMemoryPtr(),
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origin_in_bytes, size_in_bytes,
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gpu_read_only, &buffer));
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*result = Buffer(buffer, size_in_bytes, /*is_sub_buffer=*/true);
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return absl::OkStatus();
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}
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} // namespace
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Buffer::Buffer(cl_mem buffer, size_t size_in_bytes, bool is_sub_buffer)
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: buffer_(buffer), size_(size_in_bytes), is_sub_buffer_(is_sub_buffer) {}
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Buffer::Buffer(cl_mem buffer)
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: buffer_(buffer), size_(0), is_sub_buffer_(false), owner_(false) {}
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Buffer::Buffer(Buffer&& buffer)
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: buffer_(buffer.buffer_),
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size_(buffer.size_),
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is_sub_buffer_(buffer.is_sub_buffer_),
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owner_(buffer.owner_) {
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buffer.buffer_ = nullptr;
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buffer.size_ = 0;
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buffer.is_sub_buffer_ = false;
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}
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Buffer& Buffer::operator=(Buffer&& buffer) {
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if (this != &buffer) {
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Release();
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std::swap(size_, buffer.size_);
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std::swap(buffer_, buffer.buffer_);
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std::swap(is_sub_buffer_, buffer.is_sub_buffer_);
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std::swap(owner_, buffer.owner_);
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}
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return *this;
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}
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void Buffer::Release() {
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if (owner_ && buffer_) {
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clReleaseMemObject(buffer_);
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buffer_ = nullptr;
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size_ = 0;
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is_sub_buffer_ = false;
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}
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}
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absl::Status Buffer::GetGPUResources(const GPUObjectDescriptor* obj_ptr,
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GPUResourcesWithValue* resources) const {
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const auto* buffer_desc = dynamic_cast<const BufferDescriptor*>(obj_ptr);
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if (!buffer_desc) {
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return absl::InvalidArgumentError("Expected BufferDescriptor on input.");
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}
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resources->buffers.push_back({"buffer", buffer_});
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return absl::OkStatus();
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}
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absl::Status Buffer::CreateFromBufferDescriptor(const BufferDescriptor& desc,
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CLContext* context) {
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bool read_only = desc.memory_type == MemoryType::CONSTANT;
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uint8_t* data_ptr = desc.data.empty()
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? nullptr
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: const_cast<unsigned char*>(desc.data.data());
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size_ = desc.size;
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return CreateCLBuffer(context->context(), desc.size, read_only, data_ptr,
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&buffer_);
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}
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Buffer CreateBufferShared(cl_mem buffer) { return Buffer(buffer); }
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absl::Status CreateReadOnlyBuffer(size_t size_in_bytes, CLContext* context,
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Buffer* result) {
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return CreateBuffer(size_in_bytes, true, nullptr, context, result);
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}
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absl::Status CreateReadOnlyBuffer(size_t size_in_bytes, const void* data,
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CLContext* context, Buffer* result) {
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return CreateBuffer(size_in_bytes, true, data, context, result);
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}
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absl::Status CreateReadWriteBuffer(size_t size_in_bytes, CLContext* context,
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Buffer* result) {
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return CreateBuffer(size_in_bytes, false, nullptr, context, result);
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}
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absl::Status CreateReadWriteSubBuffer(const Buffer& parent,
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size_t origin_in_bytes,
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size_t size_in_bytes, CLContext* context,
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Buffer* result) {
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return CreateSubBuffer(parent, origin_in_bytes, size_in_bytes,
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/*gpu_read_only=*/false, context, result);
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}
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} // namespace cl
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} // namespace gpu
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} // namespace tflite
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