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
|
/*
* Copyright (C) 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.
*/
#define DEBUG false // STOPSHIP if true
#include "Log.h"
#include <android/hardware/power/stats/1.0/IPowerStats.h>
#include <vector>
#include "PowerStatsPuller.h"
#include "statslog.h"
#include "stats_log_util.h"
using android::hardware::hidl_vec;
using android::hardware::power::stats::V1_0::IPowerStats;
using android::hardware::power::stats::V1_0::EnergyData;
using android::hardware::power::stats::V1_0::RailInfo;
using android::hardware::power::stats::V1_0::Status;
using android::hardware::Return;
using android::hardware::Void;
using std::make_shared;
using std::shared_ptr;
namespace android {
namespace os {
namespace statsd {
static sp<android::hardware::power::stats::V1_0::IPowerStats> gPowerStatsHal = nullptr;
static std::mutex gPowerStatsHalMutex;
static bool gPowerStatsExist = true; // Initialized to ensure making a first attempt.
static std::vector<RailInfo> gRailInfo;
struct PowerStatsPullerDeathRecipient : virtual public hardware::hidl_death_recipient {
virtual void serviceDied(uint64_t cookie,
const wp<android::hidl::base::V1_0::IBase>& who) override {
// The HAL just died. Reset all handles to HAL services.
std::lock_guard<std::mutex> lock(gPowerStatsHalMutex);
gPowerStatsHal = nullptr;
}
};
static sp<PowerStatsPullerDeathRecipient> gDeathRecipient = new PowerStatsPullerDeathRecipient();
static bool getPowerStatsHalLocked() {
if (gPowerStatsHal == nullptr && gPowerStatsExist) {
gPowerStatsHal = android::hardware::power::stats::V1_0::IPowerStats::getService();
if (gPowerStatsHal == nullptr) {
ALOGW("Couldn't load power.stats HAL service");
gPowerStatsExist = false;
} else {
// Link death recipient to power.stats service handle
hardware::Return<bool> linked = gPowerStatsHal->linkToDeath(gDeathRecipient, 0);
if (!linked.isOk()) {
ALOGE("Transaction error in linking to power.stats HAL death: %s",
linked.description().c_str());
gPowerStatsHal = nullptr;
return false;
} else if (!linked) {
ALOGW("Unable to link to power.stats HAL death notifications");
// We should still continue even though linking failed
}
}
}
return gPowerStatsHal != nullptr;
}
PowerStatsPuller::PowerStatsPuller() : StatsPuller(android::util::ON_DEVICE_POWER_MEASUREMENT) {
}
bool PowerStatsPuller::PullInternal(vector<shared_ptr<LogEvent>>* data) {
std::lock_guard<std::mutex> lock(gPowerStatsHalMutex);
if (!getPowerStatsHalLocked()) {
return false;
}
int64_t wallClockTimestampNs = getWallClockNs();
int64_t elapsedTimestampNs = getElapsedRealtimeNs();
data->clear();
// Pull getRailInfo if necessary
if (gRailInfo.empty()) {
bool resultSuccess = true;
Return<void> ret = gPowerStatsHal->getRailInfo(
[&resultSuccess](const hidl_vec<RailInfo> &list, Status status) {
resultSuccess = (status == Status::SUCCESS || status == Status::NOT_SUPPORTED);
if (status != Status::SUCCESS) return;
gRailInfo.reserve(list.size());
for (size_t i = 0; i < list.size(); ++i) {
gRailInfo.push_back(list[i]);
}
});
if (!resultSuccess || !ret.isOk()) {
ALOGE("power.stats getRailInfo() failed. Description: %s", ret.description().c_str());
gPowerStatsHal = nullptr;
return false;
}
// If SUCCESS but empty, or if NOT_SUPPORTED, then never try again.
if (gRailInfo.empty()) {
ALOGE("power.stats has no rail information");
gPowerStatsExist = false; // No rail info, so never try again.
gPowerStatsHal = nullptr;
return false;
}
}
// Pull getEnergyData and write the data out
const hidl_vec<uint32_t> desiredRailIndices; // Empty vector indicates we want all.
bool resultSuccess = true;
Return<void> ret = gPowerStatsHal->getEnergyData(desiredRailIndices,
[&data, wallClockTimestampNs, elapsedTimestampNs, &resultSuccess]
(hidl_vec<EnergyData> energyDataList, Status status) {
resultSuccess = (status == Status::SUCCESS);
if (!resultSuccess) return;
for (size_t i = 0; i < energyDataList.size(); i++) {
const EnergyData& energyData = energyDataList[i];
if (energyData.index >= gRailInfo.size()) {
ALOGE("power.stats getEnergyData() returned an invalid rail index %u.",
energyData.index);
resultSuccess = false;
return;
}
const RailInfo& rail = gRailInfo[energyData.index];
auto ptr = make_shared<LogEvent>(android::util::ON_DEVICE_POWER_MEASUREMENT,
wallClockTimestampNs, elapsedTimestampNs);
ptr->write(rail.subsysName);
ptr->write(rail.railName);
ptr->write(energyData.timestamp);
ptr->write(energyData.energy);
ptr->init();
data->push_back(ptr);
VLOG("power.stat: %s.%s: %llu, %llu",
rail.subsysName.c_str(),
rail.railName.c_str(),
(unsigned long long)energyData.timestamp,
(unsigned long long)energyData.energy);
}
});
if (!resultSuccess || !ret.isOk()) {
ALOGE("power.stats getEnergyData() failed. Description: %s", ret.description().c_str());
gPowerStatsHal = nullptr;
return false;
}
return true;
}
} // namespace statsd
} // namespace os
} // namespace android
|
