1/* Copyright 2021 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#include "tensorflow/core/common_runtime/cost_util.h"
17
18#include <memory>
19#include <string>
20#include <utility>
21#include <vector>
22
23#include "tensorflow/core/common_runtime/cost_measurement.h"
24#include "tensorflow/core/common_runtime/cost_measurement_registry.h"
25#include "tensorflow/core/common_runtime/request_cost_accessor_registry.h"
26#include "tensorflow/core/platform/str_util.h"
27
28namespace tensorflow {
29
30namespace {
31
32// Gets the types of CostMeasurement from env.
33std::vector<std::string> GetCostMeasurementTypes() {
34 const char* types = std::getenv("TF_COST_MEASUREMENT_TYPE");
35 if (types == nullptr) return {};
36 return str_util::Split(types, " ,");
37}
38
39// Gets the type of RequestCostAccessor from env.
40const char* GetRequestCostAccessorType() {
41 static const char* accessor = std::getenv("TF_REQUEST_COST_ACCESSOR_TYPE");
42 return accessor;
43}
44
45} // namespace
46
47std::vector<std::unique_ptr<CostMeasurement>> CreateCostMeasurements(
48 const CostMeasurement::Context& context) {
49 static const std::vector<std::string>& types =
50 *new std::vector<std::string>(GetCostMeasurementTypes());
51
52 std::vector<std::unique_ptr<CostMeasurement>> measurements;
53 for (const auto& type : types) {
54 std::unique_ptr<CostMeasurement> measurement =
55 CostMeasurementRegistry::CreateByNameOrNull(type, context);
56 if (measurement != nullptr) {
57 measurements.push_back(std::move(measurement));
58 }
59 }
60 return measurements;
61}
62
63std::unique_ptr<RequestCostAccessor> CreateRequestCostAccessor() {
64 const char* request_cost_accessor_type = GetRequestCostAccessorType();
65 return request_cost_accessor_type
66 ? RequestCostAccessorRegistry::CreateByNameOrNull(
67 request_cost_accessor_type)
68 : nullptr;
69}
70
71} // namespace tensorflow
72