1 /* 2 * Copyright 2015 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 <binder/IProcessInfoService.h> 18 #include <binder/Parcel.h> 19 #include <utils/Errors.h> 20 #include <sys/types.h> 21 22 namespace android { 23 24 // ---------------------------------------------------------------------- 25 26 class BpProcessInfoService : public BpInterface<IProcessInfoService> { 27 public: 28 explicit BpProcessInfoService(const sp<IBinder>& impl) 29 : BpInterface<IProcessInfoService>(impl) {} 30 31 virtual status_t getProcessStatesFromPids(size_t length, /*in*/ int32_t* pids, 32 /*out*/ int32_t* states) 33 { 34 Parcel data, reply; 35 data.writeInterfaceToken(IProcessInfoService::getInterfaceDescriptor()); 36 data.writeInt32Array(length, pids); 37 data.writeInt32(length); // write length of output array, used by java AIDL stubs 38 status_t err = remote()->transact(GET_PROCESS_STATES_FROM_PIDS, data, &reply); 39 if (err != NO_ERROR || ((err = reply.readExceptionCode()) != NO_ERROR)) { 40 return err; 41 } 42 int32_t replyLen = reply.readInt32(); 43 if (static_cast<size_t>(replyLen) != length) { 44 return NOT_ENOUGH_DATA; 45 } 46 if (replyLen > 0 && (err = reply.read(states, length * sizeof(*states))) != NO_ERROR) { 47 return err; 48 } 49 return reply.readInt32(); 50 } 51 52 virtual status_t getProcessStatesAndOomScoresFromPids(size_t length, 53 /*in*/ int32_t* pids, /*out*/ int32_t* states, /*out*/ int32_t* scores) 54 { 55 Parcel data, reply; 56 data.writeInterfaceToken(IProcessInfoService::getInterfaceDescriptor()); 57 data.writeInt32Array(length, pids); 58 // write length of output arrays, used by java AIDL stubs 59 data.writeInt32(length); 60 data.writeInt32(length); 61 status_t err = remote()->transact( 62 GET_PROCESS_STATES_AND_OOM_SCORES_FROM_PIDS, data, &reply); 63 if (err != NO_ERROR 64 || ((err = reply.readExceptionCode()) != NO_ERROR)) { 65 return err; 66 } 67 int32_t replyLen = reply.readInt32(); 68 if (static_cast<size_t>(replyLen) != length) { 69 return NOT_ENOUGH_DATA; 70 } 71 if (replyLen > 0 && (err = reply.read( 72 states, length * sizeof(*states))) != NO_ERROR) { 73 return err; 74 } 75 replyLen = reply.readInt32(); 76 if (static_cast<size_t>(replyLen) != length) { 77 return NOT_ENOUGH_DATA; 78 } 79 if (replyLen > 0 && (err = reply.read( 80 scores, length * sizeof(*scores))) != NO_ERROR) { 81 return err; 82 } 83 return reply.readInt32(); 84 } 85 }; 86 87 IMPLEMENT_META_INTERFACE(ProcessInfoService, "android.os.IProcessInfoService"); 88 89 // ---------------------------------------------------------------------- 90 91 }; // namespace android 92
