| /* Copyright 2015 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_STACK_H_ |
| #define TENSORFLOW_CORE_KERNELS_STACK_H_ |
| |
| // See docs in ../ops/data_flow_ops.cc. |
| |
| #include "tensorflow/core/framework/op_kernel.h" |
| #include "tensorflow/core/framework/types.h" |
| #include "tensorflow/core/platform/types.h" |
| |
| namespace tensorflow { |
| |
| // A per-run local stack. The stack uses a "per-step" resource manager which |
| // ensures that correct garbage collection on error or successful completion. |
| class StackOp : public OpKernel { |
| public: |
| explicit StackOp(OpKernelConstruction* context); |
| void Compute(OpKernelContext* ctx) override; |
| |
| private: |
| DataType elem_type_; |
| string stack_name_; |
| |
| TF_DISALLOW_COPY_AND_ASSIGN(StackOp); |
| }; |
| |
| class StackPushOp : public AsyncOpKernel { |
| public: |
| StackPushOp(OpKernelConstruction* context, bool allow_swapping); |
| void ComputeAsync(OpKernelContext* ctx, DoneCallback done) override; |
| bool IsExpensive() override; |
| |
| private: |
| bool swap_memory_ = false; |
| }; |
| |
| // Templated helper to make it easier to register kernels with or without |
| // swapping. |
| template <bool allow_swapping> |
| class TemplatedStackPushOp : public StackPushOp { |
| public: |
| TemplatedStackPushOp(OpKernelConstruction* context) |
| : StackPushOp(context, allow_swapping) {} |
| }; |
| |
| class StackPopOp : public AsyncOpKernel { |
| public: |
| explicit StackPopOp(OpKernelConstruction* context); |
| void ComputeAsync(OpKernelContext* ctx, DoneCallback done) override; |
| bool IsExpensive() override; |
| }; |
| |
| class StackCloseOp : public OpKernel { |
| public: |
| explicit StackCloseOp(OpKernelConstruction* context); |
| void Compute(OpKernelContext* ctx) override; |
| bool IsExpensive() override; |
| }; |
| |
| } // namespace tensorflow |
| |
| #endif // TENSORFLOW_CORE_KERNELS_STACK_H_ |