1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "src/android_internal/power_stats_hal.h"
18
19 #include <string.h>
20
21 #include <algorithm>
22
23 #include <android/hardware/power/stats/1.0/IPowerStats.h>
24
25 namespace perfetto {
26 namespace android_internal {
27
28 using android::hardware::hidl_vec;
29 using android::hardware::Return;
30 using android::hardware::power::stats::V1_0::EnergyData;
31 using android::hardware::power::stats::V1_0::IPowerStats;
32 using android::hardware::power::stats::V1_0::RailInfo;
33 using android::hardware::power::stats::V1_0::Status;
34
35 namespace {
36
37 android::sp<IPowerStats> g_svc;
38
GetService()39 bool GetService() {
40 if (!g_svc)
41 g_svc = IPowerStats::getService();
42
43 return g_svc != nullptr;
44 }
45
46 } // namespace
47
GetAvailableRails(RailDescriptor * rail_descriptors,size_t * size_of_arr)48 bool GetAvailableRails(RailDescriptor* rail_descriptors, size_t* size_of_arr) {
49 const size_t in_array_size = *size_of_arr;
50 *size_of_arr = 0;
51 if (!GetService())
52 return false;
53
54 Status status;
55 auto rails_cb = [rail_descriptors, size_of_arr, &in_array_size, &status](
56 hidl_vec<RailInfo> r, Status s) {
57 status = s;
58 if (status == Status::SUCCESS) {
59 *size_of_arr = std::min(in_array_size, r.size());
60 for (int i = 0; i < *size_of_arr; ++i) {
61 const RailInfo& rail_info = r[i];
62 RailDescriptor& descriptor = rail_descriptors[i];
63
64 descriptor.index = rail_info.index;
65 descriptor.sampling_rate = rail_info.samplingRate;
66
67 strncpy(descriptor.rail_name, rail_info.railName.c_str(),
68 sizeof(descriptor.rail_name));
69 strncpy(descriptor.subsys_name, rail_info.subsysName.c_str(),
70 sizeof(descriptor.subsys_name));
71 descriptor.rail_name[sizeof(descriptor.rail_name) - 1] = '\0';
72 descriptor.subsys_name[sizeof(descriptor.subsys_name) - 1] = '\0';
73 }
74 }
75 };
76
77 Return<void> ret = g_svc->getRailInfo(rails_cb);
78 return status == Status::SUCCESS;
79 }
80
GetRailEnergyData(RailEnergyData * rail_energy_array,size_t * size_of_arr)81 bool GetRailEnergyData(RailEnergyData* rail_energy_array, size_t* size_of_arr) {
82 const size_t in_array_size = *size_of_arr;
83 *size_of_arr = 0;
84
85 if (!GetService())
86 return false;
87
88 Status status;
89 auto energy_cb = [rail_energy_array, size_of_arr, &in_array_size, &status](
90 hidl_vec<EnergyData> m, Status s) {
91 status = s;
92 if (status == Status::SUCCESS) {
93 *size_of_arr = std::min(in_array_size, m.size());
94 for (int i = 0; i < *size_of_arr; ++i) {
95 const EnergyData& measurement = m[i];
96 RailEnergyData& element = rail_energy_array[i];
97
98 element.index = measurement.index;
99 element.timestamp = measurement.timestamp;
100 element.energy = measurement.energy;
101 }
102 }
103 };
104
105 Return<void> ret = g_svc->getEnergyData(hidl_vec<uint32_t>(), energy_cb);
106 return status == Status::SUCCESS;
107 }
108
109 } // namespace android_internal
110 } // namespace perfetto
111