1 /* 2 * Copyright (C) 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 //#define LOG_NDEBUG 0 18 #define LOG_TAG "ProcessInfo" 19 #include <utils/Log.h> 20 21 #include <media/stagefright/ProcessInfo.h> 22 23 #include <binder/IProcessInfoService.h> 24 #include <binder/IServiceManager.h> 25 26 namespace android { 27 28 ProcessInfo::ProcessInfo() {} 29 30 bool ProcessInfo::getPriority(int pid, int* priority) { 31 sp<IBinder> binder = defaultServiceManager()->getService(String16("processinfo")); 32 sp<IProcessInfoService> service = interface_cast<IProcessInfoService>(binder); 33 34 size_t length = 1; 35 int32_t states; 36 status_t err = service->getProcessStatesFromPids(length, &pid, &states); 37 if (err != OK) { 38 ALOGE("getProcessStatesFromPids failed"); 39 return false; 40 } 41 ALOGV("pid %d states %d", pid, states); 42 if (states < 0) { 43 return false; 44 } 45 46 // Use process state as the priority. Lower the value, higher the priority. 47 *priority = states; 48 return true; 49 } 50 51 ProcessInfo::~ProcessInfo() {} 52 53 } // namespace android 54
