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 <utils/Singleton.h>
21
22namespace android {
23// ---------------------------------------------------------------------------
24
25class BatteryService : public Singleton<BatteryService> {
26    static const int TRANSACTION_noteStartSensor = IBinder::FIRST_CALL_TRANSACTION + 3;
27    static const int TRANSACTION_noteStopSensor = IBinder::FIRST_CALL_TRANSACTION + 4;
28    static const String16 DESCRIPTOR;
29
30    friend class Singleton<BatteryService>;
31    sp<IBinder> mBatteryStatService;
32
33    BatteryService();
34    status_t noteStartSensor(int uid, int handle);
35    status_t noteStopSensor(int uid, int handle);
36
37    void enableSensorImpl(uid_t uid, int handle);
38    void disableSensorImpl(uid_t uid, int handle);
39    void cleanupImpl(uid_t uid);
40
41    struct Info {
42        uid_t uid;
43        int handle;
44        int32_t count;
45        Info()  : uid(0), handle(0), count(0) { }
46        Info(uid_t uid, int handle) : uid(uid), handle(handle), count(0) { }
47        bool operator < (const Info& rhs) const {
48            return (uid == rhs.uid) ? (handle < rhs.handle) :  (uid < rhs.uid);
49        }
50    };
51
52    Mutex mActivationsLock;
53    SortedVector<Info> mActivations;
54    bool addSensor(uid_t uid, int handle);
55    bool removeSensor(uid_t uid, int handle);
56
57public:
58    static void enableSensor(uid_t uid, int handle) {
59        BatteryService::getInstance().enableSensorImpl(uid, handle);
60    }
61    static void disableSensor(uid_t uid, int handle) {
62        BatteryService::getInstance().disableSensorImpl(uid, handle);
63    }
64    static void cleanup(uid_t uid) {
65        BatteryService::getInstance().cleanupImpl(uid);
66    }
67};
68
69// ---------------------------------------------------------------------------
70}; // namespace android
71
72