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90 lines
2.8 KiB
90 lines
2.8 KiB
/* Copyright (c) 2018 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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/*
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* This file contains the definition of a simple Inference API for Paddle.
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*
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* ATTENTION: It requires some C++ features, for lower version C++ or C, we
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* might release another API.
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*/
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#pragma once
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#include <memory>
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#include <string>
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#include <vector>
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namespace paddle {
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struct PaddleTensor {
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std::string name; // variable name.
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std::vector<int> shape;
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std::vector<unsigned char> data; // bytes of data.
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size_t type{typeid(float).hash_code()}; // hash of type
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};
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/*
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* A simple Inference API for Paddle. Currently this API might just be used by
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* non-sequence scenerios.
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* TODO(Superjomn) Prepare another API for NLP-related usages.
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*/
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class PaddlePredictor {
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public:
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struct Config;
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PaddlePredictor() = default;
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PaddlePredictor(const PaddlePredictor&) = delete;
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// One drived class should has such a constructor
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// PaddlePredictor(const XConfig& config);
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// The XConfig is a derived class of Config.
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// Predict an record.
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virtual bool Run(const std::vector<PaddleTensor>& inputs,
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std::vector<PaddleTensor>* output_data) = 0;
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// Clone a predictor that share the model weights, the Cloned predictor should
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// be thread-safe.
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virtual std::unique_ptr<PaddlePredictor> Clone() = 0;
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// Destroy the Predictor.
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virtual ~PaddlePredictor() {}
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friend std::unique_ptr<PaddlePredictor> CreatePaddlePredictor(
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const PaddlePredictor::Config& config);
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// The common configs for all the predictors.
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struct Config {
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enum class EngineKind;
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std::string model_dir; // path to the model directory.
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bool enable_engine{false}; // Enable to execute (part of) the model on
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// third-party engines.
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EngineKind engine_kind{Config::EngineKind::kNone};
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enum class EngineKind {
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kNone = -1, // Use the native Fluid facility.
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kAnakin, // Use Anakin for inference.
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kTensorRT, // Use TensorRT for inference.
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kAutoMixedAnakin, // Automatically mix Fluid with Anakin.
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kAutoMixedTensorRT, // Automatically mix Fluid with TensorRT.
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};
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};
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};
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// A factory to help create difference predictor.
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template <typename ConfigT>
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std::unique_ptr<PaddlePredictor> CreatePaddlePredictor(const ConfigT& config);
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} // namespace paddle
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