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#define EIGEN_USE_THREADS
17
18#include "tensorflow/core/common_runtime/renamed_device.h"
19
20#include "absl/memory/memory.h"
21#include "third_party/eigen3/unsupported/Eigen/CXX11/Tensor"
22#include "tensorflow/core/lib/core/threadpool.h"
23
24namespace tensorflow {
25
26/* static */
27std::unique_ptr<Device> RenamedDevice::NewRenamedDevice(
28 const string& new_base, Device* underlying, bool owns_underlying,
29 bool isolate_session_state,
30 thread::ThreadPoolInterface* underlying_threadpool) {
31 DeviceNameUtils::ParsedName parsed_name;
32 CHECK(DeviceNameUtils::ParseFullName(new_base, &parsed_name));
33 DeviceNameUtils::ParsedName underlying_parsed_name =
34 underlying->parsed_name();
35 CHECK(underlying_parsed_name.has_type);
36 CHECK(underlying_parsed_name.has_id);
37 parsed_name.type = underlying_parsed_name.type;
38 parsed_name.id = underlying_parsed_name.id;
39 string name = DeviceNameUtils::FullName(parsed_name.job, parsed_name.replica,
40 parsed_name.task, parsed_name.type,
41 parsed_name.id);
42 DeviceAttributes attributes(underlying->attributes());
43 attributes.set_name(name);
44 // Call absl::WrapUnique to access private constructor.
45 return absl::WrapUnique(
46 new RenamedDevice(underlying, attributes, owns_underlying,
47 isolate_session_state, underlying_threadpool));
48}
49
50RenamedDevice::RenamedDevice(Device* underlying,
51 const DeviceAttributes& attributes,
52 bool owns_underlying_device,
53 bool isolate_session_state,
54 thread::ThreadPoolInterface* underlying_threadpool)
55 : Device(underlying->env(), attributes),
56 underlying_device_(underlying),
57 owns_underlying_device_(owns_underlying_device),
58 isolate_session_state_(isolate_session_state) {
59 if (underlying_threadpool != nullptr) {
60 underlying_threadpool_.reset(new thread::ThreadPool(underlying_threadpool));
61 eigen_worker_threads_.workers = underlying_threadpool_.get();
62 eigen_worker_threads_.num_threads = underlying_threadpool->NumThreads();
63 set_tensorflow_cpu_worker_threads(&eigen_worker_threads_);
64 set_tensorflow_device_thread_pool(underlying_threadpool_.get());
65
66 Eigen::ThreadPoolDevice eigen_threadpool_device(
67 underlying_threadpool, underlying_threadpool->NumThreads());
68 set_eigen_cpu_device(&eigen_threadpool_device);
69 }
70}
71
72RenamedDevice::~RenamedDevice() {
73 if (owns_underlying_device_) {
74 delete underlying_device_;
75 }
76}
77
78} // namespace tensorflow
79