RFR: 8330821: Rename UnsafeCopyMemory

[Vladimir Kozlov]

On Mon, 22 Apr 2024 13:48:41 GMT, Scott Gibbons <sgibbons at openjdk.org> wrote:

> Renaming UnsafeCopyMemory to UnsafeMemoryAccess since this class is now being used for Unsafe::setMemory.  This is a pure rename only.

src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp line 1524:

> 1522:       // UnsafeMemoryAccess page error: continue after ucm
> 1523:       bool add_entry = !is_oop && (!aligned || sizeof(jlong) == size);
> 1524:       UnsafeMemoryAccessMark ucmm(this, add_entry, true);

May be rename `ucmm` and other related locals too to avoid confusion. Word `ucm` in comments too.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18889#discussion_r1575178012