RFR: 8299915: Remove ArrayAllocatorMallocLimit and associated code [v10]

[Stefan Karlsson]

On Thu, 19 Jan 2023 17:23:19 GMT, Justin King <jcking at openjdk.org> wrote:

>> Remove abstraction that is a holdover from Solaris. Direct usages of `MmapArrayAllocator` have been switched to normal `malloc`. The justification is that none of the code paths are called from signal handlers, so using `mmap` directly does not make sense and is potentially slower than going through `malloc` which can potentially re-use memory without making any system calls. The remaining usages of `ArrayAllocator` and `MallocArrayAllocator` are equivalent.
>
> Justin King has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Do not pass nullptr to os::release_memory
>   
>   Signed-off-by: Justin King <jcking at google.com>

Could we create a simpler version of this PR? One that only removes ArrayAllocator and ArrayAllocatorMallocLimit, but keeps MallocArrayAllocator and MmapArrayAllocator? That way we can figure out later, in a separate RFE, if we want to remove MmapArrayAllocator.

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PR Review: https://git.openjdk.org/jdk/pull/11931#pullrequestreview-1437268937