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Commit 3161795b authored by Doug Zongker's avatar Doug Zongker
Browse files

when logging free space on /data, log /system and /cache as well 

Report space free on system and cache so we can estimate bad block
statistics for devices in the field.
parent e9e1cdd5

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

+65 −39
Original line number Diff line number Diff line
@@ -68,19 +68,22 @@ class DeviceStorageMonitorService extends Binder { 
    private static final int EVENT_LOG_FREE_STORAGE_LEFT = 2746;

    private static final long DEFAULT_DISK_FREE_CHANGE_REPORTING_THRESHOLD = 2 * 1024 * 1024; // 2MB

    private static final long DEFAULT_CHECK_INTERVAL = MONITOR_INTERVAL*60*1000;

    private long mFreeMem;

    private long mFreeMem;  // on /data

    private long mLastReportedFreeMem;

    private long mLastReportedFreeMemTime;

    private boolean mLowMemFlag=false;

    private Context mContext;

    private ContentResolver mContentResolver;

    long mBlkSize;

    long mTotalMemory;

    StatFs mFileStats;

    private long mTotalMemory;  // on /data

    private StatFs mDataFileStats;

    private StatFs mSystemFileStats;

    private StatFs mCacheFileStats;

    private static final String DATA_PATH = "/data";

    long mThreadStartTime = -1;

    boolean mClearSucceeded = false;

    boolean mClearingCache;

    private static final String SYSTEM_PATH = "/system";

    private static final String CACHE_PATH = "/cache";

    private long mThreadStartTime = -1;

    private boolean mClearSucceeded = false;

    private boolean mClearingCache;

    private Intent mStorageLowIntent;

    private Intent mStorageOkIntent;

    private CachePackageDataObserver mClearCacheObserver;
@@ -119,8 +122,13 @@ class DeviceStorageMonitorService extends Binder { 
    }



    private final void restatDataDir() {

        mFileStats.restat(DATA_PATH);

        mFreeMem = mFileStats.getAvailableBlocks()*mBlkSize;

        try {

            mDataFileStats.restat(DATA_PATH);

            mFreeMem = (long) mDataFileStats.getAvailableBlocks() *

                mDataFileStats.getBlockSize();

        } catch (IllegalArgumentException e) {

            // use the old value of mFreeMem

        }

        // Allow freemem to be overridden by debug.freemem for testing

        String debugFreeMem = SystemProperties.get("debug.freemem");

        if (!"".equals(debugFreeMem)) {
@@ -135,7 +143,24 @@ class DeviceStorageMonitorService extends Binder { 
        if((mLastReportedFreeMemTime == 0) ||

           (currTime-mLastReportedFreeMemTime) >= freeMemLogInterval) {

            mLastReportedFreeMemTime = currTime;

            EventLog.writeEvent(EVENT_LOG_FREE_STORAGE_LEFT, mFreeMem);

            long mFreeSystem = -1, mFreeCache = -1;

            try {

                mSystemFileStats.restat(SYSTEM_PATH);

                mFreeSystem = (long) mSystemFileStats.getAvailableBlocks() *

                    mSystemFileStats.getBlockSize();

            } catch (IllegalArgumentException e) {

                // ignore; report -1

            }

            try {

                mCacheFileStats.restat(CACHE_PATH);

                mFreeCache = (long) mCacheFileStats.getAvailableBlocks() *

                    mCacheFileStats.getBlockSize();

            } catch (IllegalArgumentException e) {

                // ignore; report -1

            }

            mCacheFileStats.restat(CACHE_PATH);

            EventLog.writeEvent(EVENT_LOG_FREE_STORAGE_LEFT,

                                mFreeMem, mFreeSystem, mFreeCache);

        }

        // Read the reporting threshold from Gservices

        long threshold = Gservices.getLong(mContentResolver,
@@ -247,11 +272,12 @@ class DeviceStorageMonitorService extends Binder { 
        mContext = context;

        mContentResolver = mContext.getContentResolver();

        //create StatFs object

        mFileStats = new StatFs(DATA_PATH);

        //initialize block size

        mBlkSize = mFileStats.getBlockSize();

        mDataFileStats = new StatFs(DATA_PATH);

        mSystemFileStats = new StatFs(SYSTEM_PATH);

        mCacheFileStats = new StatFs(CACHE_PATH);

        //initialize total storage on device

        mTotalMemory = ((long)mFileStats.getBlockCount()*mBlkSize)/100L;

        mTotalMemory = ((long)mDataFileStats.getBlockCount() *

                        mDataFileStats.getBlockSize())/100L;

        mStorageLowIntent = new Intent(Intent.ACTION_DEVICE_STORAGE_LOW);

        mStorageOkIntent = new Intent(Intent.ACTION_DEVICE_STORAGE_OK);

        checkMemory(true);