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