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 #ifndef ANDROID_PROCESS_INFO_SERVICE_H 18 #define ANDROID_PROCESS_INFO_SERVICE_H 19 20 #include <binder/IProcessInfoService.h> 21 #include <utils/Errors.h> 22 #include <utils/Singleton.h> 23 #include <sys/types.h> 24 25 namespace android { 26 27 // ---------------------------------------------------------------------- 28 29 class ProcessInfoService : public Singleton<ProcessInfoService> { 30 31 friend class Singleton<ProcessInfoService>; 32 sp<IProcessInfoService> mProcessInfoService; 33 Mutex mProcessInfoLock; 34 35 ProcessInfoService(); 36 37 status_t getProcessStatesImpl(size_t length, /*in*/ int32_t* pids, /*out*/ int32_t* states); 38 void updateBinderLocked(); 39 40 static const int BINDER_ATTEMPT_LIMIT = 5; 41 42 public: 43 44 /** 45 * For each PID in the given "pids" input array, write the current process state 46 * for that process into the "states" output array, or 47 * ActivityManager.PROCESS_STATE_NONEXISTENT * to indicate that no process with the given PID 48 * exists. 49 * 50 * Returns NO_ERROR if this operation was successful, or a negative error code otherwise. 51 */ 52 static status_t getProcessStatesFromPids(size_t length, /*in*/ int32_t* pids, 53 /*out*/ int32_t* states) { 54 return ProcessInfoService::getInstance().getProcessStatesImpl(length, /*in*/ pids, 55 /*out*/ states); 56 } 57 58 }; 59 60 // ---------------------------------------------------------------------- 61 62 }; // namespace android 63 64 #endif // ANDROID_PROCESS_INFO_SERVICE_H 65 66
