wehub-resource-sync
103 lines
3.1 KiB
Plaintext
103 lines
3.1 KiB
Plaintext
/* Copyright 2020 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/metal/buffer.h"
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#include <utility>
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namespace tflite {
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namespace gpu {
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namespace metal {
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Buffer::Buffer(id<MTLBuffer> buffer, size_t size_in_bytes)
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: buffer_(buffer), size_(size_in_bytes) {}
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Buffer::Buffer(id<MTLBuffer> buffer)
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: buffer_(buffer), size_(0), owner_(false) {}
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Buffer::Buffer(Buffer&& buffer)
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: buffer_(buffer.buffer_), size_(buffer.size_), owner_(buffer.owner_) {
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buffer.buffer_ = nullptr;
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buffer.size_ = 0;
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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(owner_, buffer.owner_);
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}
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return *this;
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}
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Buffer::~Buffer() { Release(); }
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void Buffer::Release() {
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if (owner_ && buffer_) {
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buffer_ = nullptr;
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size_ = 0;
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owner_ = 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_, 0}});
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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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id<MTLDevice> device) {
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size_ = desc.size;
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if (desc.data.empty()) {
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buffer_ =
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[device newBufferWithLength:size_ options:MTLResourceStorageModeShared];
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} else {
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buffer_ = [device newBufferWithBytes:desc.data.data()
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length:size_
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options:MTLResourceStorageModeShared];
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}
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return absl::OkStatus();
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}
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Buffer CreateBufferShared(id<MTLBuffer> buffer) { return Buffer(buffer); }
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absl::Status CreateBuffer(size_t size_in_bytes, const void* data,
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id<MTLDevice> device, Buffer* result) {
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id<MTLBuffer> buffer;
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if (data) {
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buffer = [device newBufferWithBytes:data
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length:size_in_bytes
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options:MTLResourceStorageModeShared];
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} else {
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buffer = [device newBufferWithLength:size_in_bytes
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options:MTLResourceStorageModeShared];
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}
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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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} // namespace metal
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} // namespace gpu
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} // namespace tflite
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