1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/*
* Copyright 2018 The Android Open Source Project
*
* 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.
*/
#undef LOG_TAG
#define LOG_TAG "LayerHistory"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include "LayerHistory.h"
#include <cutils/properties.h>
#include <utils/Log.h>
#include <utils/Timers.h>
#include <utils/Trace.h>
#include <algorithm>
#include <cmath>
#include <string>
#include <utility>
#include "../Layer.h"
#include "LayerInfo.h"
#include "SchedulerUtils.h"
namespace android::scheduler::impl {
namespace {
bool isLayerActive(const Layer& layer, const LayerInfo& info, nsecs_t threshold) {
if (layer.getFrameRateForLayerTree().rate > 0) {
return layer.isVisible();
}
return layer.isVisible() && info.getLastUpdatedTime() >= threshold;
}
bool traceEnabled() {
char value[PROPERTY_VALUE_MAX];
property_get("debug.sf.layer_history_trace", value, "0");
return atoi(value);
}
bool useFrameRatePriority() {
char value[PROPERTY_VALUE_MAX];
property_get("debug.sf.use_frame_rate_priority", value, "1");
return atoi(value);
}
void trace(const wp<Layer>& weak, int fps) {
const auto layer = weak.promote();
if (!layer) return;
const auto& name = layer->getName();
const auto tag = "LFPS " + name;
ATRACE_INT(tag.c_str(), fps);
ALOGD("%s: %s @ %d Hz", __FUNCTION__, name.c_str(), fps);
}
} // namespace
LayerHistory::LayerHistory()
: mTraceEnabled(traceEnabled()), mUseFrameRatePriority(useFrameRatePriority()) {}
LayerHistory::~LayerHistory() = default;
void LayerHistory::registerLayer(Layer* layer, float lowRefreshRate, float highRefreshRate,
LayerVoteType /*type*/) {
auto info = std::make_unique<LayerInfo>(lowRefreshRate, highRefreshRate);
std::lock_guard lock(mLock);
mLayerInfos.emplace_back(layer, std::move(info));
}
void LayerHistory::record(Layer* layer, nsecs_t presentTime, nsecs_t now,
LayerUpdateType /*updateType*/) {
std::lock_guard lock(mLock);
const auto it = std::find_if(mLayerInfos.begin(), mLayerInfos.end(),
[layer](const auto& pair) { return pair.first == layer; });
LOG_FATAL_IF(it == mLayerInfos.end(), "%s: unknown layer %p", __FUNCTION__, layer);
const auto& info = it->second;
info->setLastPresentTime(presentTime, now);
// Activate layer if inactive.
if (const auto end = activeLayers().end(); it >= end) {
std::iter_swap(it, end);
mActiveLayersEnd++;
}
}
LayerHistory::Summary LayerHistory::summarize(nsecs_t now) {
ATRACE_CALL();
std::lock_guard lock(mLock);
partitionLayers(now);
LayerHistory::Summary summary;
for (const auto& [weakLayer, info] : activeLayers()) {
const bool recent = info->isRecentlyActive(now);
auto layer = weakLayer.promote();
// Only use the layer if the reference still exists.
if (layer || CC_UNLIKELY(mTraceEnabled)) {
const auto layerFocused =
Layer::isLayerFocusedBasedOnPriority(layer->getFrameRateSelectionPriority());
// Check if frame rate was set on layer.
const auto frameRate = layer->getFrameRateForLayerTree();
if (frameRate.rate > 0.f) {
const auto voteType = [&]() {
switch (frameRate.type) {
case Layer::FrameRateCompatibility::Default:
return LayerVoteType::ExplicitDefault;
case Layer::FrameRateCompatibility::ExactOrMultiple:
return LayerVoteType::ExplicitExactOrMultiple;
case Layer::FrameRateCompatibility::NoVote:
return LayerVoteType::NoVote;
}
}();
summary.push_back({layer->getName(), voteType, frameRate.rate, /* weight */ 1.0f,
layerFocused});
} else if (recent) {
summary.push_back({layer->getName(), LayerVoteType::Heuristic,
info->getRefreshRate(now),
/* weight */ 1.0f, layerFocused});
}
if (CC_UNLIKELY(mTraceEnabled)) {
trace(weakLayer, round<int>(frameRate.rate));
}
}
}
return summary;
}
void LayerHistory::partitionLayers(nsecs_t now) {
const nsecs_t threshold = getActiveLayerThreshold(now);
// Collect expired and inactive layers after active layers.
size_t i = 0;
while (i < mActiveLayersEnd) {
auto& [weak, info] = mLayerInfos[i];
if (const auto layer = weak.promote(); layer && isLayerActive(*layer, *info, threshold)) {
i++;
continue;
}
if (CC_UNLIKELY(mTraceEnabled)) {
trace(weak, 0);
}
info->clearHistory();
std::swap(mLayerInfos[i], mLayerInfos[--mActiveLayersEnd]);
}
// Collect expired layers after inactive layers.
size_t end = mLayerInfos.size();
while (i < end) {
if (mLayerInfos[i].first.promote()) {
i++;
} else {
std::swap(mLayerInfos[i], mLayerInfos[--end]);
}
}
mLayerInfos.erase(mLayerInfos.begin() + static_cast<long>(end), mLayerInfos.end());
}
void LayerHistory::clear() {
std::lock_guard lock(mLock);
for (const auto& [layer, info] : activeLayers()) {
info->clearHistory();
}
mActiveLayersEnd = 0;
}
} // namespace android::scheduler::impl
|
