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_QUEUE_OP_H_ 17 #define TENSORFLOW_KERNELS_QUEUE_OP_H_ 18 19 #include <deque> 20 21 #include "tensorflow/core/framework/op_kernel.h" 22 #include "tensorflow/core/framework/resource_op_kernel.h" 23 #include "tensorflow/core/framework/tensor.h" 24 #include "tensorflow/core/framework/types.h" 25 #include "tensorflow/core/kernels/queue_base.h" 26 #include "tensorflow/core/lib/core/errors.h" 27 #include "tensorflow/core/platform/macros.h" 28 #include "tensorflow/core/platform/types.h" 29 30 namespace tensorflow { 31 32 // Defines a QueueOp, an abstract class for Queue construction ops. 33 class QueueOp : public ResourceOpKernel<QueueInterface> { 34 public: 35 QueueOp(OpKernelConstruction* context) : ResourceOpKernel(context) { 36 OP_REQUIRES_OK(context, context->GetAttr("capacity", &capacity_)); 37 if (capacity_ < 0) { 38 capacity_ = QueueBase::kUnbounded; 39 } 40 OP_REQUIRES_OK(context, 41 context->GetAttr("component_types", &component_types_)); 42 } 43 44 void Compute(OpKernelContext* context) override { 45 ResourceOpKernel<QueueInterface>::Compute(context); 46 if (resource_ && context->track_allocations()) { 47 context->record_persistent_memory_allocation(resource_->MemoryUsed()); 48 } 49 } 50 51 protected: 52 // Variables accessible by subclasses 53 int32 capacity_; 54 DataTypeVector component_types_; 55 56 private: 57 Status VerifyResource(QueueInterface* queue) override { 58 return queue->MatchesNodeDef(def()); 59 } 60 }; 61 62 class TypedQueueOp : public QueueOp { 63 public: 64 using QueueOp::QueueOp; 65 66 protected: 67 template <typename TypedQueue> 68 Status CreateTypedQueue(TypedQueue* queue, QueueInterface** ret) { 69 if (queue == nullptr) { 70 return errors::ResourceExhausted("Failed to allocate queue."); 71 } 72 *ret = queue; 73 return queue->Initialize(); 74 } 75 }; 76 77 } // namespace tensorflow 78 79 #endif // TENSORFLOW_KERNELS_QUEUE_OP_H_ 80
