RFR: 8347408: Create an internal method handle adapter for system calls with errno

[Per Minborg]

On Mon, 5 May 2025 16:53:58 GMT, Per Minborg <pminborg at openjdk.org> wrote:

> As we advance, converting older JDK code to use the relatively new FFM API requires system calls that can provide `errno` and the likes to explicitly allocate a MemorySegment to capture potential error states. This can lead to negative performance implications if not designed carefully and also introduces unnecessary code complexity.
> 
> Hence, this PR proposes adding a JDK internal method handle adapter that can be used to handle system calls with `errno`, `GetLastError`, and `WSAGetLastError`.
> 
> It relies on an efficient carrier-thread-local cache of memory regions to allide allocations.

The current benchmarks (M1 macOS):


~/Applications/brr --build --build-microbenchmarks -w CaptureStateUtilBench

Benchmark                                                  Mode  Cnt   Score   Error  Units
CaptureStateUtilBench.OfVirtual.adaptedSysCallFail         avgt   30  34.372 ± 0.221  ns/op
CaptureStateUtilBench.OfVirtual.adaptedSysCallSuccess      avgt   30  12.694 ± 0.251  ns/op
CaptureStateUtilBench.OfVirtual.explicitAllocationFail     avgt   30  40.470 ± 0.529  ns/op
CaptureStateUtilBench.OfVirtual.explicitAllocationSuccess  avgt   30  21.680 ± 0.339  ns/op
CaptureStateUtilBench.adaptedSysCallFail                   avgt   30  31.054 ± 0.575  ns/op
CaptureStateUtilBench.adaptedSysCallSuccess                avgt   30   5.029 ± 0.088  ns/op
CaptureStateUtilBench.explicitAllocationFail               avgt   30  40.338 ± 0.586  ns/op
CaptureStateUtilBench.explicitAllocationSuccess            avgt   30  21.769 ± 0.552  ns/op



Passes `tier1` on multiple platforms.

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PR Comment: https://git.openjdk.org/jdk/pull/25043#issuecomment-2851658924