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Commit 3527866d authored by Li Li's avatar Li Li
Browse files

Exempt apps with INSTALL_PACKAGES from freezer 



System applications with INSTALL_PACKAGES permission, like store
apps, have long-running processes in order to keep the system stable
and secure. Don't freeze them even if they are cached.

Bug: 184584402
Test: Verified store apps with the permission won't be frozen.

Change-Id: I4ae45a3688ac6d50c0e7d6ef11ce506b283ee82f
Signed-off-by: default avatarLi Li <dualli@google.com>
parent 0fd3bb14

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

+4 −0
Original line number Diff line number Diff line
@@ -3037,6 +3037,10 @@ public final class OomAdjuster { 
            return;

        }



        if (app.mOptRecord.isFreezeExempt()) {

            return;

        }



        final ProcessCachedOptimizerRecord opt = app.mOptRecord;

        // if an app is already frozen and shouldNotFreeze becomes true, immediately unfreeze

        if (opt.isFrozen() && opt.shouldNotFreeze()) {

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

+17 −0
Original line number Diff line number Diff line
@@ -80,6 +80,12 @@ final class ProcessCachedOptimizerRecord { 
    @GuardedBy("mProcLock")

    private boolean mShouldNotFreeze;



    /**

     * Exempt from freezer (now for system apps with INSTALL_PACKAGES permission)

     */

    @GuardedBy("mProcLock")

    private boolean mFreezeExempt;



    @GuardedBy("mProcLock")

    long getLastCompactTime() {

        return mLastCompactTime;
@@ -160,6 +166,16 @@ final class ProcessCachedOptimizerRecord { 
        mShouldNotFreeze = shouldNotFreeze;

    }



    @GuardedBy("mProcLock")

    boolean isFreezeExempt() {

        return mFreezeExempt;

    }



    @GuardedBy("mPreLock")

    void setFreezeExempt(boolean exempt) {

        mFreezeExempt = exempt;

    }



    ProcessCachedOptimizerRecord(ProcessRecord app) {

        mApp = app;

        mProcLock = app.mService.mProcLock;
@@ -173,6 +189,7 @@ final class ProcessCachedOptimizerRecord { 
    void dump(PrintWriter pw, String prefix, long nowUptime) {

        pw.print(prefix); pw.print("lastCompactTime="); pw.print(mLastCompactTime);

        pw.print(" lastCompactAction="); pw.println(mLastCompactAction);

        pw.print(prefix); pw.print("isFreezeExempt="); pw.print(mFreezeExempt);

        pw.print(" " + IS_FROZEN + "="); pw.println(mFrozen);

    }

}

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

+9 −1
Original line number Diff line number Diff line
@@ -54,6 +54,7 @@ import static com.android.server.am.ActivityManagerService.TAG_NETWORK; 
import static com.android.server.am.ActivityManagerService.TAG_PROCESSES;

import static com.android.server.am.ActivityManagerService.TAG_UID_OBSERVERS;



import android.Manifest;

import android.annotation.NonNull;

import android.app.ActivityManager;

import android.app.ActivityManager.ProcessCapability;
@@ -76,6 +77,7 @@ import android.content.Intent; 
import android.content.IntentFilter;

import android.content.pm.ApplicationInfo;

import android.content.pm.IPackageManager;

import android.content.pm.PackageManager;

import android.content.pm.PackageManagerInternal;

import android.content.res.Resources;

import android.graphics.Point;
@@ -1773,9 +1775,9 @@ public final class ProcessList { 
        mService.updateCpuStats();

        checkSlow(startTime, "startProcess: done updating cpu stats");



        try {

        try {

            final int userId = UserHandle.getUserId(app.uid);

            try {

                AppGlobals.getPackageManager().checkPackageStartable(app.info.packageName, userId);

            } catch (RemoteException e) {

                throw e.rethrowAsRuntimeException();
@@ -1798,6 +1800,12 @@ public final class ProcessList { 
                            app.info.packageName);

                    externalStorageAccess = storageManagerInternal.hasExternalStorageAccess(uid,

                            app.info.packageName);

                    if (pm.checkPermission(Manifest.permission.INSTALL_PACKAGES,

                            app.info.packageName, userId)

                            == PackageManager.PERMISSION_GRANTED) {

                        Slog.i(TAG, app.info.packageName + " is exempt from freezer");

                        app.mOptRecord.setFreezeExempt(true);

                    }

                } catch (RemoteException e) {

                    throw e.rethrowAsRuntimeException();

                }

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

+1 −1

File changed.

Contains only whitespace changes.