1 /*
2  * Copyright (C) 2012 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 <stdint.h>
18 #include <sys/types.h>
19 
20 #include <binder/IBatteryStats.h>
21 #include <utils/Singleton.h>
22 
23 namespace android {
24 // ---------------------------------------------------------------------------
25 
26 class BatteryService : public Singleton<BatteryService> {
27 
28     friend class Singleton<BatteryService>;
29     sp<IBatteryStats> mBatteryStatService;
30 
31     BatteryService();
32 
33     void enableSensorImpl(uid_t uid, int handle);
34     void disableSensorImpl(uid_t uid, int handle);
35     void cleanupImpl(uid_t uid);
36 
37     struct Info {
38         uid_t uid;
39         int handle;
40         int32_t count;
InfoInfo41         Info()  : uid(0), handle(0), count(0) { }
InfoInfo42         Info(uid_t uid, int handle) : uid(uid), handle(handle), count(0) { }
43         bool operator < (const Info& rhs) const {
44             return (uid == rhs.uid) ? (handle < rhs.handle) :  (uid < rhs.uid);
45         }
46     };
47 
48     Mutex mActivationsLock;
49     SortedVector<Info> mActivations;
50     bool addSensor(uid_t uid, int handle);
51     bool removeSensor(uid_t uid, int handle);
52     bool checkService();
53 
54 public:
enableSensor(uid_t uid,int handle)55     static void enableSensor(uid_t uid, int handle) {
56         BatteryService::getInstance().enableSensorImpl(uid, handle);
57     }
disableSensor(uid_t uid,int handle)58     static void disableSensor(uid_t uid, int handle) {
59         BatteryService::getInstance().disableSensorImpl(uid, handle);
60     }
cleanup(uid_t uid)61     static void cleanup(uid_t uid) {
62         BatteryService::getInstance().cleanupImpl(uid);
63     }
64 };
65 
66 // ---------------------------------------------------------------------------
67 }; // namespace android
68 
69