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71 lines
2.3 KiB
71 lines
2.3 KiB
// Copyright (c) 2018 PaddlePaddle Authors. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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/fluid/pybind/recordio.h"
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#include <fstream>
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#include "paddle/fluid/framework/lod_tensor.h"
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#include "paddle/fluid/recordio/writer.h"
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namespace paddle {
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namespace pybind {
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class RecordIOWriter {
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public:
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RecordIOWriter(const std::string& filename, recordio::Compressor compressor,
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size_t max_num_record)
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: stream_(filename), writer_(&stream_, compressor, max_num_record) {}
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void AppendTensor(const framework::LoDTensor& tensor) {
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tensors_.push_back(tensor);
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}
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void CompleteAppendTensor() {
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auto& ctx =
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*platform::DeviceContextPool::Instance().Get(platform::CPUPlace());
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framework::WriteToRecordIO(writer_, tensors_, ctx);
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tensors_.clear();
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}
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void Close() {
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PADDLE_ENFORCE(tensors_.empty());
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writer_.Flush();
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stream_.close();
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}
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private:
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std::vector<framework::LoDTensor> tensors_;
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std::ofstream stream_;
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recordio::Writer writer_;
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};
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void BindRecordIOWriter(py::module& m) {
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py::class_<RecordIOWriter> writer(m, "RecordIOWriter", "");
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py::enum_<recordio::Compressor>(writer, "Compressor", "")
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.value("Snappy", recordio::Compressor::kSnappy)
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.value("NoCompress", recordio::Compressor::kNoCompress);
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writer
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.def("__init__",
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[](RecordIOWriter& self, const std::string& filename,
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recordio::Compressor compressor, size_t max_num_record) {
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new (&self) RecordIOWriter(filename, compressor, max_num_record);
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})
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.def("append_tensor", &RecordIOWriter::AppendTensor)
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.def("complete_append_tensor", &RecordIOWriter::CompleteAppendTensor)
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.def("close", &RecordIOWriter::Close);
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}
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} // namespace pybind
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} // namespace paddle
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