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Commit a1e79948 authored by Jeff Sharkey's avatar Jeff Sharkey
Browse files

Give DeviceStorageMonitorService it's own thread. 

When devices are low on space, it calls down into installd to clear
cached files, which can block for a long time.  Instead of risking
the wrath of the Watchdog on IoThread, give ourselves a separate
thread.

Test: builds, boots
Bug: 64080821
Change-Id: Iaca00966bb836d58e8d2400d6c9d544023ef1af8
parent e5ae77c6

services/core/java/com/android/server/storage/DeviceStorageMonitorService.java

+17 −14
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ import android.os.Binder; 
import android.os.Environment;

import android.os.FileObserver;

import android.os.Handler;

import android.os.HandlerThread;

import android.os.Message;

import android.os.ResultReceiver;

import android.os.ServiceManager;
@@ -154,20 +155,8 @@ public class DeviceStorageMonitorService extends SystemService { 


    private static final String TV_NOTIFICATION_CHANNEL_ID = "devicestoragemonitor.tv";



    /**

     * Handler that checks the amount of disk space on the device and sends a

     * notification if the device runs low on disk space

     */

    private final Handler mHandler = new Handler(IoThread.get().getLooper()) {

        @Override

        public void handleMessage(Message msg) {

            switch (msg.what) {

                case MSG_CHECK:

                    check();

                    return;

            }

        }

    };

    private final HandlerThread mHandlerThread;

    private final Handler mHandler;



    private State findOrCreateState(UUID uuid) {

        State state = mStates.get(uuid);
@@ -256,6 +245,20 @@ public class DeviceStorageMonitorService extends SystemService { 


    public DeviceStorageMonitorService(Context context) {

        super(context);



        mHandlerThread = new HandlerThread(TAG, android.os.Process.THREAD_PRIORITY_BACKGROUND);

        mHandlerThread.start();



        mHandler = new Handler(mHandlerThread.getLooper()) {

            @Override

            public void handleMessage(Message msg) {

                switch (msg.what) {

                    case MSG_CHECK:

                        check();

                        return;

                }

            }

        };

    }



    private static boolean isBootImageOnDisk() {