memory usage of byte ?
John.Rose at Sun.COM
Sun Jul 6 22:46:27 PDT 2008
Actually, it's a long-standing bug that primitive arrays use memmove
for array copy.
I'm working on a change set where we will use
Copy::conjoint_memory_atomic instead, which has the correct semantics.
On Jul 6, 2008, at 9:48 PM, Peter B. Kessler wrote:
> In addition to being rigorous about aligning things, we are also
> careful not to use calls like memcpy(3C), which is spec'd to copy
> by bytes, so one can see word-tearing if you are watching the
> destination while someone is memcpy'ing into it: e.g., an array
> of object references. That was _no_ fun to debug.
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