wehub-resource-sync
96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
/* Copyright 2019 The TensorFlow Authors. All Rights Reserved.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
==============================================================================*/
|
|
#include <string>
|
|
|
|
#include "tensorflow/lite/core/c/builtin_op_data.h"
|
|
#include "tensorflow/lite/core/c/common.h"
|
|
#include "tensorflow/lite/core/subgraph.h"
|
|
#include "tensorflow/lite/experimental/resource/lookup_interfaces.h"
|
|
#include "tensorflow/lite/kernels/kernel_util.h"
|
|
|
|
namespace tflite {
|
|
namespace ops {
|
|
namespace builtin {
|
|
namespace hashtable {
|
|
|
|
// The current hash table op returns a key of the hash table resource objects,
|
|
// shared by the context. Later, this implementation might be updated by sharing
|
|
// the actual reference of hash table objects in the tensor buffer.
|
|
|
|
static constexpr int kResourceHandleTensor = 0;
|
|
|
|
TfLiteStatus PrepareHashtable(TfLiteContext* context, TfLiteNode* node) {
|
|
TF_LITE_ENSURE_EQ(context, NumInputs(node), 0);
|
|
TF_LITE_ENSURE_EQ(context, NumOutputs(node), 1);
|
|
|
|
TF_LITE_ENSURE(context, node->builtin_data != nullptr);
|
|
const auto* params =
|
|
reinterpret_cast<const TfLiteHashtableParams*>(node->builtin_data);
|
|
|
|
TF_LITE_ENSURE(context, (params->key_dtype == kTfLiteInt64 &&
|
|
params->value_dtype == kTfLiteString) ||
|
|
(params->key_dtype == kTfLiteString &&
|
|
params->value_dtype == kTfLiteInt64));
|
|
|
|
TfLiteTensor* resource_handle_tensor;
|
|
TF_LITE_ENSURE_OK(context, GetOutputSafe(context, node, kResourceHandleTensor,
|
|
&resource_handle_tensor));
|
|
TF_LITE_ENSURE_EQ(context, resource_handle_tensor->type, kTfLiteResource);
|
|
size_t bytesRequired = sizeof(int32_t);
|
|
|
|
// Realloc space for an integer handle value.
|
|
TfLiteTensorRealloc(bytesRequired, resource_handle_tensor);
|
|
resource_handle_tensor->bytes = bytesRequired;
|
|
|
|
TfLiteIntArray* outputSize = TfLiteIntArrayCreate(1);
|
|
outputSize->data[0] = 1;
|
|
if (resource_handle_tensor->dims)
|
|
TfLiteIntArrayFree(resource_handle_tensor->dims);
|
|
resource_handle_tensor->dims = outputSize;
|
|
|
|
return kTfLiteOk;
|
|
}
|
|
|
|
TfLiteStatus EvalHashtable(TfLiteContext* context, TfLiteNode* node) {
|
|
TF_LITE_ENSURE(context, node->builtin_data != nullptr);
|
|
const auto* params =
|
|
reinterpret_cast<const TfLiteHashtableParams*>(node->builtin_data);
|
|
|
|
const int32_t resource_id = params->table_id;
|
|
|
|
TfLiteTensor* resource_handle_tensor;
|
|
TF_LITE_ENSURE_OK(context, GetOutputSafe(context, node, kResourceHandleTensor,
|
|
&resource_handle_tensor));
|
|
*resource_handle_tensor->data.i32 = resource_id;
|
|
|
|
Subgraph* subgraph = reinterpret_cast<Subgraph*>(context->impl_);
|
|
auto& resources = subgraph->resources();
|
|
resource::CreateHashtableResourceIfNotAvailable(
|
|
&resources, resource_id, params->key_dtype, params->value_dtype);
|
|
return kTfLiteOk;
|
|
}
|
|
|
|
} // namespace hashtable
|
|
|
|
TfLiteRegistration* Register_HASHTABLE() {
|
|
static TfLiteRegistration r = {nullptr, nullptr, hashtable::PrepareHashtable,
|
|
hashtable::EvalHashtable};
|
|
return &r;
|
|
}
|
|
|
|
} // namespace builtin
|
|
} // namespace ops
|
|
} // namespace tflite
|