Hi,
I checked on my side.
- Using JDK (Oracle) 8 1.8.0_221 (Linux)
- Using OpenJDK 8 1.8.0_232 (Linux)
- Using both Netty 4.1.50
Both versions gives 0 bytes initialized ByteBufs.
However, in general, assuming an allocation gives a zero values array is a
wrong assertion (at least in many languages).
If you want to ensure your ByteBuf is set to 0, allocate as you do and then:
byteBuf.setZero(byteBuf.readerIndex(), SIZE);
Cheers,
Frederic
Le mercredi 20 mai 2020 20:38:27 UTC+2, Priyanka Perera a écrit :
>
> Hi,
>
> It appears that with *openjdk-11.0.3* the *Unpooled.buffer()* may return
> a *ByteBuf *with a backing array elements initialized to non zero values.
>
> In Oracle JDK 8 however, the elements of the backing array are initialized
> to zero.
>
> Using *netty-4.1.41.Final*.
>
> Appreciate if this can be explained.
>
> Is there an API to get a ByteBuf with backing array elements initialized
> to zero ?.
>
> @Test(invocationCount = 10000)
> public void testInitialization() {
> final int SIZE = 10000;
> ByteBuf byteBuf = Unpooled.buffer(SIZE);
>
> int arrayLength = byteBuf.array().length;
> for (int arrayIndex = 0; arrayIndex < arrayLength; arrayIndex++) {
> Assert.assertEquals(byteBuf.array()[arrayIndex], 0);
> }
> }
>
>
> [image: image.png]
>
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