ChannelBuffer to byte array

["Trustin Lee (이희승)"]

Hi Shay,

I think it is safe even if you do not copy the content of the array if
the happens-before condition meets.  For example, this is safe:

Thread A:

    sharedByteArray[0] = 1;
    taskQueue.offer(something);

Thread B:

    taskQueue.poll(); // get something
    assert sharedByteArray[0] == 1;

For more information, read this article:

    http://www.ibm.com/developerworks/library/j-jtp03304/

HTH,
Trustin

Shay Banon wrote:
> Just to clarify this (and correct me if I am wrong here Trustin), if
> then, you are going to use that byte array in another thread (for
> example, using the execution handler), then you have to copy it over.
> For example, in your http request message handler which then delegates
> the handling of the Http request to another thread.
> 
> -shay.banon
> 
> On Wed, Mar 3, 2010 at 7:56 AM, "Trustin Lee (이희승)"
> <trustin at gmail.com <mailto:trustin at gmail.com>> wrote:
> 
>     Adam,
> 
>     Netty 3.2 adds array() and hasArray() to ChannelBuffer.
> 
>     In 3.1, you can call toByteBuffer() which will not involve memory copy
>     if possible.
> 
>     HTH,
>     Trustin
> 
>     Adam Durana wrote:
>     > Hi,
>     >
>     > I'm looking for the most efficient way to get a ChannelBuffer's data
>     > in the form of a byte array.  The byte array will be only read from
>     > and not modified.  Is the best way to use a ChannelBuffer's readBytes
>     > method to copy the data into an array?  Or is there a way that doesn't
>     > involve copying given that I'm not going to be modifying the array?
>     >
>     > Thanks,
>     > Adam
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