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
|
/*
* Copyright (C) 2015 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.
*/
package android.os;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.SystemService;
import android.content.Context;
import android.hardware.thermal.V1_0.Constants;
import android.util.Log;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
/**
* The HardwarePropertiesManager class provides a mechanism of accessing hardware state of a
* device: CPU, GPU and battery temperatures, CPU usage per core, fan speed, etc.
*/
@SystemService(Context.HARDWARE_PROPERTIES_SERVICE)
public class HardwarePropertiesManager {
private static final String TAG = HardwarePropertiesManager.class.getSimpleName();
private final IHardwarePropertiesManager mService;
/**
* @hide
*/
@Retention(RetentionPolicy.SOURCE)
@IntDef(prefix = { "DEVICE_TEMPERATURE_" }, value = {
DEVICE_TEMPERATURE_CPU,
DEVICE_TEMPERATURE_GPU,
DEVICE_TEMPERATURE_BATTERY,
DEVICE_TEMPERATURE_SKIN
})
public @interface DeviceTemperatureType {}
/**
* @hide
*/
@Retention(RetentionPolicy.SOURCE)
@IntDef(prefix = { "TEMPERATURE_" }, value = {
TEMPERATURE_CURRENT,
TEMPERATURE_THROTTLING,
TEMPERATURE_SHUTDOWN,
TEMPERATURE_THROTTLING_BELOW_VR_MIN
})
public @interface TemperatureSource {}
/**
* Device temperature types.
*/
// These constants are also defined in android/os/enums.proto.
// Any change to the types here or in the thermal hal should be made in the proto as well.
/** Temperature of CPUs in Celsius. */
public static final int DEVICE_TEMPERATURE_CPU = Constants.TemperatureType.CPU;
/** Temperature of GPUs in Celsius. */
public static final int DEVICE_TEMPERATURE_GPU = Constants.TemperatureType.GPU;
/** Temperature of battery in Celsius. */
public static final int DEVICE_TEMPERATURE_BATTERY = Constants.TemperatureType.BATTERY;
/** Temperature of device skin in Celsius. */
public static final int DEVICE_TEMPERATURE_SKIN = Constants.TemperatureType.SKIN;
/** Get current temperature. */
public static final int TEMPERATURE_CURRENT = 0;
/** Get throttling temperature threshold. */
public static final int TEMPERATURE_THROTTLING = 1;
/** Get shutdown temperature threshold. */
public static final int TEMPERATURE_SHUTDOWN = 2;
/**
* Get throttling temperature threshold above which minimum clockrates for VR mode will not be
* met.
*/
public static final int TEMPERATURE_THROTTLING_BELOW_VR_MIN = 3;
/** Undefined temperature constant. */
public static final float UNDEFINED_TEMPERATURE = -Float.MAX_VALUE;
/** Calling app context. */
private final Context mContext;
/** @hide */
public HardwarePropertiesManager(Context context, IHardwarePropertiesManager service) {
mContext = context;
mService = service;
}
/**
* Return an array of device temperatures in Celsius.
*
* @param type type of requested device temperature, one of {@link #DEVICE_TEMPERATURE_CPU},
* {@link #DEVICE_TEMPERATURE_GPU}, {@link #DEVICE_TEMPERATURE_BATTERY} or {@link
* #DEVICE_TEMPERATURE_SKIN}.
* @param source source of requested device temperature, one of {@link #TEMPERATURE_CURRENT},
* {@link #TEMPERATURE_THROTTLING}, {@link #TEMPERATURE_THROTTLING_BELOW_VR_MIN} or
* {@link #TEMPERATURE_SHUTDOWN}.
* @return an array of requested float device temperatures. Temperature equals to
* {@link #UNDEFINED_TEMPERATURE} if undefined.
* Empty if platform doesn't provide the queried temperature.
*
* @throws SecurityException if something other than the device owner or the current VR service
* tries to retrieve information provided by this service.
*/
public @NonNull float[] getDeviceTemperatures(@DeviceTemperatureType int type,
@TemperatureSource int source) {
switch (type) {
case DEVICE_TEMPERATURE_CPU:
case DEVICE_TEMPERATURE_GPU:
case DEVICE_TEMPERATURE_BATTERY:
case DEVICE_TEMPERATURE_SKIN:
switch (source) {
case TEMPERATURE_CURRENT:
case TEMPERATURE_THROTTLING:
case TEMPERATURE_SHUTDOWN:
case TEMPERATURE_THROTTLING_BELOW_VR_MIN:
try {
return mService.getDeviceTemperatures(mContext.getOpPackageName(), type,
source);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
default:
Log.w(TAG, "Unknown device temperature source.");
return new float[0];
}
default:
Log.w(TAG, "Unknown device temperature type.");
return new float[0];
}
}
/**
* Return an array of CPU usage info for each core.
*
* @return an array of {@link android.os.CpuUsageInfo} for each core. Return {@code null} for
* each unplugged core.
* Empty if CPU usage is not supported on this system.
*
* @throws SecurityException if something other than the device owner or the current VR service
* tries to retrieve information provided by this service.
*/
public @NonNull CpuUsageInfo[] getCpuUsages() {
try {
return mService.getCpuUsages(mContext.getOpPackageName());
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
/**
* Return an array of fan speeds in RPM.
*
* @return an array of float fan speeds in RPM. Empty if there are no fans or fan speed is not
* supported on this system.
*
* @throws SecurityException if something other than the device owner or the current VR service
* tries to retrieve information provided by this service.
*/
public @NonNull float[] getFanSpeeds() {
try {
return mService.getFanSpeeds(mContext.getOpPackageName());
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
}
|
