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Commit e1e1969c authored by Ruben Brunk's avatar Ruben Brunk Committed by Wale Ogunwale
Browse files

Add ProcessInfoService to activity manager. 

- Adds a new AIDL interface for querying process
  information from activity manager.

Bug: 19186859
Change-Id: Ic08858f346d6b66e7bfc9da6faa2c6e38d9b2e82
parent 631565ab

Android.mk

+1 −0
Original line number Diff line number Diff line
@@ -199,6 +199,7 @@ LOCAL_SRC_FILES += \ 
	core/java/android/os/INetworkActivityListener.aidl \

	core/java/android/os/INetworkManagementService.aidl \

	core/java/android/os/IPermissionController.aidl \

	core/java/android/os/IProcessInfoService.aidl \

	core/java/android/os/IPowerManager.aidl \

	core/java/android/os/IRemoteCallback.aidl \

	core/java/android/os/ISchedulingPolicyService.aidl \

core/java/android/app/ActivityManager.java

+3 −0
Original line number Diff line number Diff line
@@ -256,6 +256,9 @@ public class ActivityManager { 
    /** @hide User operation call: given user id is the current user, can't be stopped. */

    public static final int USER_OP_IS_CURRENT = -2;



    /** @hide Process does not exist. */

    public static final int PROCESS_STATE_NONEXISTENT = -1;



    /** @hide Process is a persistent system process. */

    public static final int PROCESS_STATE_PERSISTENT = 0;

core/java/android/os/IProcessInfoService.aidl

0 → 100644
+29 −0
Original line number Diff line number Diff line 
/*

 * Copyright 2015 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



package android.os;



/** {@hide} */

interface IProcessInfoService

{

    /**

     * For each PID in the given input array, write the current process state

     * for that process into the output array, or ActivityManager.PROCESS_STATE_NONEXISTENT

     * to indicate that no process with the given PID exists.

     */

    void getProcessStatesFromPids(in int[] pids, out int[] states);

}

services/core/java/com/android/server/am/ActivityManagerService.java

+42 −1
Original line number Diff line number Diff line
@@ -169,6 +169,7 @@ import android.os.FileUtils; 
import android.os.Handler;

import android.os.IBinder;

import android.os.IPermissionController;

import android.os.IProcessInfoService;

import android.os.IRemoteCallback;

import android.os.IUserManager;

import android.os.Looper;
@@ -1918,6 +1919,7 @@ public final class ActivityManagerService extends ActivityManagerNative 
                ServiceManager.addService("cpuinfo", new CpuBinder(this));

            }

            ServiceManager.addService("permission", new PermissionController(this));

            ServiceManager.addService("processinfo", new ProcessInfoService(this));















            ApplicationInfo info = mContext.getPackageManager().getApplicationInfo(















                    "android", STOCK_PM_FLAGS);










@@ -6806,6 +6808,45 @@ public final class ActivityManagerService extends ActivityManagerNative













        }















    }



























    // =========================================================













    // PROCESS INFO













    // =========================================================

























    static class ProcessInfoService extends IProcessInfoService.Stub {













        final ActivityManagerService mActivityManagerService;













        ProcessInfoService(ActivityManagerService activityManagerService) {













            mActivityManagerService = activityManagerService;













        }

























        @Override













        public void getProcessStatesFromPids(/*in*/ int[] pids, /*out*/ int[] states) {













            mActivityManagerService.getProcessStatesForPIDs(/*in*/ pids, /*out*/ states);













        }













    }

























    /**













     * For each PID in the given input array, write the current process state













     * for that process into the output array, or -1 to indicate that no













     * process with the given PID exists.













     */













    public void getProcessStatesForPIDs(/*in*/ int[] pids, /*out*/ int[] states) {













        if (pids == null) {













            throw new NullPointerException("pids");













        } else if (states == null) {













            throw new NullPointerException("states");













        } else if (pids.length != states.length) {













            throw new IllegalArgumentException("input and output arrays have different lengths!");













        }

























        synchronized (mPidsSelfLocked) {













            for (int i = 0; i < pids.length; i++) {













                ProcessRecord pr = mPidsSelfLocked.get(pids[i]);













                states[i] = (pr == null) ? ActivityManager.PROCESS_STATE_NONEXISTENT :













                        pr.curProcState;













            }













        }













    }



























    // =========================================================















    // PERMISSIONS















    // =========================================================