1/* Copyright 2022 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#include "tensorflow/lite/profiling/root_profiler.h"
16
17#include <memory>
18#include <utility>
19#include <vector>
20
21namespace tflite {
22namespace profiling {
23
24void RootProfiler::AddProfiler(Profiler* profiler) {
25 if (profiler == nullptr) return;
26 profilers_.push_back(profiler);
27}
28
29void RootProfiler::AddProfiler(std::unique_ptr<Profiler>&& profiler) {
30 if (profiler == nullptr) return;
31 owned_profilers_.emplace_back(std::move(profiler));
32 profilers_.push_back(owned_profilers_.back().get());
33}
34
35uint32_t RootProfiler::BeginEvent(const char* tag, EventType event_type,
36 int64_t event_metadata1,
37 int64_t event_metadata2) {
38 // TODO(b/238913100): Remove the workaround.
39 if (profilers_.size() == 1) {
40 return profilers_[0]->BeginEvent(tag, event_type, event_metadata1,
41 event_metadata2);
42 }
43 auto id = next_event_id_++;
44 std::vector<uint32_t> event_ids;
45 event_ids.reserve(profilers_.size());
46 for (auto* profiler : profilers_) {
47 event_ids.push_back(profiler->BeginEvent(tag, event_type, event_metadata1,
48 event_metadata2));
49 }
50 events_.emplace(id, std::move(event_ids));
51 return id;
52}
53
54void RootProfiler::EndEvent(uint32_t event_handle, int64_t event_metadata1,
55 int64_t event_metadata2) {
56 // TODO(b/238913100): Remove the workaround.
57 if (profilers_.size() == 1) {
58 return profilers_[0]->EndEvent(event_handle, event_metadata1,
59 event_metadata2);
60 }
61 if (const auto it = events_.find(event_handle); it != events_.end()) {
62 const auto& event_ids = it->second;
63 for (auto idx = 0; idx < event_ids.size(); idx++) {
64 profilers_[idx]->EndEvent(event_ids[idx], event_metadata1,
65 event_metadata2);
66 }
67 events_.erase(it);
68 }
69}
70
71void RootProfiler::EndEvent(uint32_t event_handle) {
72 // TODO(b/238913100): Remove the workaround.
73 if (profilers_.size() == 1) {
74 return profilers_[0]->EndEvent(event_handle);
75 }
76 if (const auto it = events_.find(event_handle); it != events_.end()) {
77 const auto& event_ids = it->second;
78 for (auto idx = 0; idx < event_ids.size(); idx++) {
79 profilers_[idx]->EndEvent(event_ids[idx]);
80 }
81 events_.erase(it);
82 }
83}
84
85void RootProfiler::AddEvent(const char* tag, EventType event_type,
86 uint64_t metric, int64_t event_metadata1,
87 int64_t event_metadata2) {
88 for (auto* profiler : profilers_) {
89 profiler->AddEvent(tag, event_type, metric, event_metadata1,
90 event_metadata2);
91 }
92}
93
94void RootProfiler::AddEventWithData(const char* tag, EventType event_type,
95 const void* data) {
96 for (auto* profiler : profilers_) {
97 profiler->AddEventWithData(tag, event_type, data);
98 }
99}
100
101void RootProfiler::RemoveChildProfilers() {
102 owned_profilers_.clear();
103 profilers_.clear();
104 // Previous `BeginEvent` calls will be discarded.
105 events_.clear();
106}
107
108} // namespace profiling
109} // namespace tflite
110