Paddle/paddle/fluid/operators/empty_op.h

// Copyright (c) 2020 PaddlePaddle 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.

#pragma once

#include <string>
#include <vector>

#include "paddle/fluid/framework/op_registry.h"
#include "paddle/fluid/operators/utils.h"

namespace paddle {
namespace operators {

using Tensor = framework::Tensor;

template <typename DeviceContext, typename T>
class EmptyKernel : public framework::OpKernel<T> {
 public:
  void Compute(const framework::ExecutionContext &context) const override {
    auto dtype = static_cast<framework::proto::VarType::Type>(
        context.Attr<int>("dtype"));

    Tensor *out_tensor = context.Output<Tensor>("Out");

    auto shape = GetShape(context);
    out_tensor->Resize(shape);

    out_tensor->mutable_data(context.GetPlace(), dtype);
  }
};

}  // namespace operators
}  // namespace paddle