[foreign-memaccess+abi] Integrated: 8301262: Simplify the CaptureCallState support

[Jorn Vernee]

On Thu, 2 Feb 2023 00:01:59 GMT, Jorn Vernee <jvernee at openjdk.org> wrote:

> Simplify capture call state support based on Maurizio's suggestion.
> 
> We currently compute a layout to write the captured state into based on the values that the user wants to capture. However, we could simplify the API by using the same layout every time, that can hold every value that someone might want to capture. This is only 12 bytes, so the memory usage is not a big deal. The important part is to not read every thread local value every time, which works just as it does today.
> 
> The second issue in today's implementation, is that it is still possible to create a capture state linker option that captures `GetLastError` on Linux. But, this doesn't make any sense. In the new implementation the GetLastError and WSAGetLastError options are only available on Windows.

This pull request has now been integrated.

Changeset: bf1334c5
Author:    Jorn Vernee <jvernee at openjdk.org>
URL:       https://git.openjdk.org/panama-foreign/commit/bf1334c5bd1cb5ef01e144bfc0dceaa016ba857a
Stats:     177 lines in 9 files changed: 80 ins; 73 del; 24 mod

8301262: Simplify the CaptureCallState support

Reviewed-by: mcimadamore

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PR: https://git.openjdk.org/panama-foreign/pull/778