1 /* Copyright 2015 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #ifndef TENSORFLOW_KERNELS_FIFO_QUEUE_H_ 17 #define TENSORFLOW_KERNELS_FIFO_QUEUE_H_ 18 19 #include <deque> 20 #include <vector> 21 22 #include "tensorflow/core/framework/op_kernel.h" 23 #include "tensorflow/core/framework/tensor.h" 24 #include "tensorflow/core/framework/tensor_shape.h" 25 #include "tensorflow/core/framework/types.h" 26 #include "tensorflow/core/kernels/typed_queue.h" 27 #include "tensorflow/core/platform/macros.h" 28 #include "tensorflow/core/platform/mutex.h" 29 #include "tensorflow/core/platform/types.h" 30 31 namespace tensorflow { 32 33 class FIFOQueue : public TypedQueue<std::deque<PersistentTensor> > { 34 public: 35 FIFOQueue(int32 capacity, const DataTypeVector& component_dtypes, 36 const std::vector<TensorShape>& component_shapes, 37 const string& name); 38 39 // Implementations of QueueInterface methods -------------------------------- 40 41 void TryEnqueue(const Tuple& tuple, OpKernelContext* ctx, 42 DoneCallback callback) override; 43 void TryEnqueueMany(const Tuple& tuple, OpKernelContext* ctx, 44 DoneCallback callback) override; 45 void TryDequeue(OpKernelContext* ctx, CallbackWithTuple callback) override; 46 void TryDequeueMany(int num_elements, OpKernelContext* ctx, 47 bool allow_small_batch, 48 CallbackWithTuple callback) override; 49 Status MatchesNodeDef(const NodeDef& node_def) override; 50 51 int32 size() override { 52 mutex_lock lock(mu_); 53 return queues_[0].size(); 54 } 55 56 protected: 57 ~FIFOQueue() override {} 58 59 // Helper for dequeuing a single element from queues_. 60 void DequeueLocked(OpKernelContext* ctx, Tuple* tuple) 61 EXCLUSIVE_LOCKS_REQUIRED(mu_); 62 63 static Status GetElementComponentFromBatch(const Tuple& tuple, int64 index, 64 int component, 65 OpKernelContext* ctx, 66 PersistentTensor* out_element); 67 68 private: 69 TF_DISALLOW_COPY_AND_ASSIGN(FIFOQueue); 70 }; 71 72 } // namespace tensorflow 73 74 #endif // TENSORFLOW_KERNELS_FIFO_QUEUE_H_ 75
