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#define LOG_TAG "ISchedulingPolicyService"
18//#define LOG_NDEBUG 0
19
20#include <binder/Parcel.h>
21#include "ISchedulingPolicyService.h"
22
23namespace android {
24
25// Keep in sync with frameworks/base/core/java/android/os/ISchedulingPolicyService.aidl
26enum {
27    REQUEST_PRIORITY_TRANSACTION = IBinder::FIRST_CALL_TRANSACTION,
28};
29
30// ----------------------------------------------------------------------
31
32class BpSchedulingPolicyService : public BpInterface<ISchedulingPolicyService>
33{
34public:
35    explicit BpSchedulingPolicyService(const sp<IBinder>& impl)
36        : BpInterface<ISchedulingPolicyService>(impl)
37    {
38    }
39
40    virtual int requestPriority(int32_t pid, int32_t tid,
41                                int32_t prio, bool isForApp, bool asynchronous)
42    {
43        Parcel data, reply;
44        data.writeInterfaceToken(ISchedulingPolicyService::getInterfaceDescriptor());
45        data.writeInt32(pid);
46        data.writeInt32(tid);
47        data.writeInt32(prio);
48        data.writeBool(isForApp);
49        uint32_t flags = asynchronous ? IBinder::FLAG_ONEWAY : 0;
50        status_t status = remote()->transact(REQUEST_PRIORITY_TRANSACTION, data, &reply, flags);
51        if (status != NO_ERROR) {
52            return status;
53        }
54        if (asynchronous) {
55            return NO_ERROR;
56        }
57        // fail on exception: force binder reconnection
58        if (reply.readExceptionCode() != 0) {
59            return DEAD_OBJECT;
60        }
61        return reply.readInt32();
62    }
63};
64
65IMPLEMENT_META_INTERFACE(SchedulingPolicyService, "android.os.ISchedulingPolicyService");
66
67// ----------------------------------------------------------------------
68
69status_t BnSchedulingPolicyService::onTransact(
70    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
71{
72    switch (code) {
73    case REQUEST_PRIORITY_TRANSACTION:
74        // Not reached
75        return NO_ERROR;
76        break;
77    default:
78        return BBinder::onTransact(code, data, reply, flags);
79    }
80}
81
82}   // namespace android
83