wangmeng28
8 years ago
commit
571ef90ce2
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/* Copyright (c) 2016 PaddlePaddle 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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#pragma once
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namespace paddle {
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namespace operators {
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namespace detail {
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/**
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* Get Reference From Pointer with check. The error message is printf format,
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* and passed by `args`
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*/
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template <typename T, typename... ARGS>
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inline T &Ref(T *ptr, ARGS &&... args) {
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PADDLE_ENFORCE(ptr != nullptr, args...);
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return *ptr;
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}
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} // namespace detail
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} // namespace operators
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} // namespace paddle
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@ -0,0 +1,67 @@
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/* Copyright (c) 2016 PaddlePaddle Authors. All Rights Reserve.
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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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#include "paddle/framework/op_registry.h"
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#include "paddle/framework/operator.h"
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namespace paddle {
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namespace operators {
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constexpr char kInput[] = "X";
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constexpr char kOutput[] = "Out";
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class IsEmptyOp : public framework::OperatorBase {
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public:
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IsEmptyOp(const std::string &type, const framework::VariableNameMap &inputs,
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const framework::VariableNameMap &outputs,
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const framework::AttributeMap &attrs)
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: OperatorBase(type, inputs, outputs, attrs) {}
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void Run(const framework::Scope &scope,
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const platform::DeviceContext &dev_ctx) const override {
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// get input
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auto *var = scope.FindVar(Input(kInput));
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PADDLE_ENFORCE_NOT_NULL(var);
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auto &tensor = var->Get<framework::LoDTensor>();
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// get output
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auto *out = scope.FindVar(Output(kOutput));
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PADDLE_ENFORCE_NOT_NULL(out);
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auto *out_tensor = out->GetMutable<framework::LoDTensor>();
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out_tensor->Resize({1});
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out_tensor->mutable_data<bool>(platform::CPUPlace())[0] =
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framework::product(tensor.dims()) == 0;
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}
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};
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class IsEmptyOpProtoMaker : public framework::OpProtoAndCheckerMaker {
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public:
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IsEmptyOpProtoMaker(framework::OpProto *proto,
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framework::OpAttrChecker *op_checker)
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: OpProtoAndCheckerMaker(proto, op_checker) {
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AddInput(kInput, "(Tensor) Tensor which is to be checked.");
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AddOutput(kOutput, "(Tensor) a boolean Tensor that indicate empty or not.");
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AddComment(R"DOC(
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IsEmpty Operator which checks whether a tensor is empty.
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It will just return product(tensor.ddims()) > 0;
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)DOC");
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}
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};
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} // namespace operators
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} // namespace paddle
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REGISTER_OP_WITHOUT_GRADIENT(is_empty, paddle::operators::IsEmptyOp,
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paddle::operators::IsEmptyOpProtoMaker);
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