| /* Copyright 2019 The TensorFlow 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. |
| ==============================================================================*/ |
| |
| #ifndef TENSORFLOW_CORE_KERNELS_DATA_RANDOM_SEED_OPS_H_ |
| #define TENSORFLOW_CORE_KERNELS_DATA_RANDOM_SEED_OPS_H_ |
| |
| #include "tensorflow/core/framework/resource_mgr.h" |
| #include "tensorflow/core/kernels/data/dataset_utils.h" |
| #include "tensorflow/core/lib/random/philox_random.h" |
| #include "tensorflow/core/lib/random/random.h" |
| #include "tensorflow/core/lib/random/random_distributions.h" |
| |
| namespace tensorflow { |
| namespace data { |
| |
| // A random seed generator resource. |
| class RandomSeedGenerator : public ResourceBase { |
| public: |
| RandomSeedGenerator(int64 seed, int64 seed2) |
| : seed_(seed), |
| seed2_(seed2), |
| parent_generator_(seed, seed2), |
| generator_(&parent_generator_) {} |
| |
| int64 num_random_samples(); |
| void set_num_random_samples(int64 num_random_samples); |
| |
| string DebugString() const override; |
| void GenerateRandomSeeds(int64* seed1, int64* seed2); |
| void Reset(); |
| void Serialize(OpKernelContext* ctx); |
| |
| private: |
| const int64 seed_; |
| const int64 seed2_; |
| mutex mu_; |
| random::PhiloxRandom parent_generator_ GUARDED_BY(mu_); |
| random::SingleSampleAdapter<random::PhiloxRandom> generator_ GUARDED_BY(mu_); |
| int64 num_random_samples_ GUARDED_BY(mu_) = 0; |
| }; |
| |
| // Creates an instance of random seed generator resource and transfers ownership |
| // to the caller. |
| class AnonymousRandomSeedGeneratorHandleOp |
| : public AnonymousResourceOp<RandomSeedGenerator> { |
| public: |
| explicit AnonymousRandomSeedGeneratorHandleOp(OpKernelConstruction* ctx); |
| void Compute(OpKernelContext* ctx) override; |
| |
| private: |
| string name() override; |
| Status CreateResource(OpKernelContext* ctx, |
| std::unique_ptr<FunctionLibraryDefinition> flib_def, |
| std::unique_ptr<ProcessFunctionLibraryRuntime> pflr, |
| FunctionLibraryRuntime* lib, |
| RandomSeedGenerator** resource) override; |
| |
| int64 seed_; |
| int64 seed2_; |
| }; |
| |
| // Deletes an instance of random seed generator resource. |
| class DeleteRandomSeedGeneratorOp : public OpKernel { |
| public: |
| explicit DeleteRandomSeedGeneratorOp(OpKernelConstruction* ctx) |
| : OpKernel(ctx) {} |
| |
| void Compute(OpKernelContext* ctx) override; |
| }; |
| |
| } // namespace data |
| } // namespace tensorflow |
| |
| #endif // TENSORFLOW_CORE_KERNELS_DATA_RANDOM_SEED_OPS_H_ |