1/* Copyright 2015 The TensorFlow Authors. All Rights Reserved.
2
3Licensed under the Apache License, Version 2.0 (the "License");
4you may not use this file except in compliance with the License.
5You may obtain a copy of the License at
6
7 http://www.apache.org/licenses/LICENSE-2.0
8
9Unless required by applicable law or agreed to in writing, software
10distributed under the License is distributed on an "AS IS" BASIS,
11WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12See the License for the specific language governing permissions and
13limitations under the License.
14==============================================================================*/
15
16// See docs in ../ops/random_ops.cc.
17
18#include "tensorflow/core/framework/register_types.h"
19#include "tensorflow/core/kernels/shuffle_common.h"
20#include "tensorflow/core/util/guarded_philox_random.h"
21
22namespace tensorflow {
23
24template <typename T>
25class RandomShuffleOp : public OpKernel {
26 public:
27 explicit RandomShuffleOp(OpKernelConstruction* context) : OpKernel(context) {
28 OP_REQUIRES_OK(context, generator_.Init(context));
29 }
30
31 void Compute(OpKernelContext* ctx) override {
32 const Tensor& input = ctx->input(0);
33 auto get_rng = [this](int64_t num_samples) {
34 return generator_.ReserveSamples32(num_samples);
35 };
36 OP_REQUIRES_OK(ctx,
37 RandomShuffle<T>(ctx, input, /*output_idx=*/0, get_rng));
38 }
39
40 private:
41 GuardedPhiloxRandom generator_;
42};
43
44#define REGISTER(T) \
45 REGISTER_KERNEL_BUILDER( \
46 Name("RandomShuffle").Device(DEVICE_CPU).TypeConstraint<T>("T"), \
47 RandomShuffleOp<T>);
48
49TF_CALL_ALL_TYPES(REGISTER)
50
51#undef REGISTER
52
53} // namespace tensorflow
54