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
23namespace android {
24// ---------------------------------------------------------------------------
25
26class 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;
41        Info()  : uid(0), handle(0), count(0) { }
42        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
53public:
54    static void enableSensor(uid_t uid, int handle) {
55        BatteryService::getInstance().enableSensorImpl(uid, handle);
56    }
57    static void disableSensor(uid_t uid, int handle) {
58        BatteryService::getInstance().disableSensorImpl(uid, handle);
59    }
60    static void cleanup(uid_t uid) {
61        BatteryService::getInstance().cleanupImpl(uid);
62    }
63};
64
65// ---------------------------------------------------------------------------
66}; // namespace android
67
68