84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
/* Copyright 2020 The TensorFlow 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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#ifndef TENSORFLOW_STREAM_EXECUTOR_TPU_PROTO_HELPER_H_
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#define TENSORFLOW_STREAM_EXECUTOR_TPU_PROTO_HELPER_H_
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#include <cstddef>
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#include "tensorflow/core/platform/logging.h"
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#include "tensorflow/stream_executor/tpu/c_api_decl.h"
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extern "C" {
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void StreamExecutor_Tpu_FreeSerializedProto(const TpuSerializedProto* proto);
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} // extern "C"
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namespace stream_executor {
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namespace tpu {
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using SerializedProto = TpuSerializedProto;
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// Serializes a `proto` and put the result in the given `SerializedProtoType*`
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// argument.
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//
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// Users should call SerializedProto_Free on `serialized_proto` afterwards.
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template <class ProtoType, class SerializedProtoType>
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inline void SerializeProto(const ProtoType& proto,
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SerializedProtoType* serialized_proto) {
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auto size = proto.ByteSizeLong();
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auto bytes = new char[size];
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CHECK(proto.SerializeToArray(bytes, size));
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serialized_proto->size = size;
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serialized_proto->bytes = bytes;
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}
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// Serializes a proto and return the result as a SerializedProto value.
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//
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// Users should call SerializedProto_Free on the return value afterwards.
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template <class ProtoType>
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inline SerializedProto SerializeProto(const ProtoType& proto) {
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SerializedProto serialized_proto;
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SerializeProto(proto, &serialized_proto);
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return serialized_proto;
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}
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// Deserializes a buffer and return the corresponding proto. If the buffer is
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// empty, return an empty proto.
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template <class ProtoType, class SerializedProtoType>
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inline ProtoType DeserializeProto(const SerializedProtoType& serialized_proto) {
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ProtoType proto;
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if (serialized_proto.bytes != nullptr) {
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CHECK_GT(serialized_proto.size, 0);
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CHECK(proto.ParseFromArray(serialized_proto.bytes, serialized_proto.size))
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<< "Invalid buffer, failed to deserialize buffer.";
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}
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return proto;
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}
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// Releases the memory allocated for serialized protos.
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template <class SerializedProtoType>
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inline void SerializedProto_Free(const SerializedProtoType& serialized_proto) {
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CHECK_NE(serialized_proto.bytes, nullptr);
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CHECK_GT(serialized_proto.size, 0);
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delete[] serialized_proto.bytes;
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}
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} // namespace tpu
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} // namespace stream_executor
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#endif // TENSORFLOW_STREAM_EXECUTOR_TPU_PROTO_HELPER_H_
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