android Bundle put不进去 -- ArrayIndexOutOfBoundsException

android Bundle put 报数组越界

	11-11 06:19:36.419  1886  1910 E AndroidRuntime: java.lang.ArrayIndexOutOfBoundsException: length=0; index=0
	11-11 06:19:36.419  1886  1910 E AndroidRuntime: 	at android.util.ArrayMap.put(ArrayMap.java:515)
	11-11 06:19:36.419  1886  1910 E AndroidRuntime: 	at android.os.BaseBundle.putInt(BaseBundle.java:455)
	11-11 06:19:36.419  1886  1910 E AndroidRuntime: 	at com.android.server.location.GnssLocationProvider.updateStatus(GnssLocationProvider.java:1214)

base/services/core/java/com/android/server/location/GnssLocationProvider.java

	private Location mLocation = new Location(LocationManager.GPS_PROVIDER);
	private Bundle mLocationExtras = new Bundle();

	private void updateStatus(int status, int svCount) {
		mLocationExtras.putInt("satellites", svCount);
	}

	public int getStatus(Bundle extras) {
        if (extras != null) {
            extras.putInt("satellites", mSvCount);
        }
        return mStatus;
    }
	private void reportLocation(
	{
		...
		mLocation.setExtras(mLocationExtras);
	}
	public GnssLocationProvider(){
		mLocation.setExtras(mLocationExtras);
	}

Location.java

	private Bundle mExtras = null;

	public void setExtras(Bundle extras) {
		Extras = (extras == null) ? null : new Bundle(extras);
	}

Bundle

base/core/java/android/os/Bundle.java

    public Bundle() {
        super();
        mFlags = FLAG_HAS_FDS_KNOWN | FLAG_ALLOW_FDS;
    }

	public Bundle(Bundle b) {
        super(b);
        mFlags = b.mFlags;
    }

base/core/java/android/os/BaseBundle.java

	ArrayMap<String, Object> mMap = null;

	BaseBundle() {
    	this((ClassLoader) null, 0);
	}

	BaseBundle(BaseBundle b) {
		mMap = new ArrayMap<>(b.mMap);
	}

问题复现

在不同的线程中去设置同一个值，
	
	// 线程1去执行
	public void setTest(){
		mBunle.putInt("hello", 10);
	}
	// 线程2去执行
	public void setTest1(){
		mBunle.putInt("hello", 20);
	}
	// 线程3去执行
	public void setTest2(){
		String mindex = "hello";
        if(index > 65535){
            index = 0;
            mindex = "index" + mindex;
        }else{
            index++;
        }
        mindex = mindex + index;
        Log.d(TAG, "mindex:" + mindex + "  ," + index);
        mBunle.putInt(mindex, index);
	}

// 就发现很容易复现 ArrayIndexOutOfBoundsException 数组越界

分析：在setTest2中有不断的扩容，扩容的过程，有执行 setTest1 和 setTest，那么这里则需要同步
也就是在扩容中，有对内存操作

本文地址：https://blog.csdn.net/LHshooter/article/details/107579968