The Foreign Memory API supports viewing a `MemorySegment` as a `ByteBuffer`, an instance of which can then be passed to the vector load/store access methods.
Such `ByteBuffer` access requires accesses are scoped (a method annotated with `ScopedMemoryAccess.Scoped`) and the `ByteBuffer`'s scope (instance of `ScopedMemoryAccess.Scope`) checked for validity. Thereby ensuring exceptional failure if the underlying segment is shared and is closed. All Vector tests pass on linux-x64, linux-aarch64, macosx-x64, and windows-x64. ------------- Commit messages: - Move byte buffer test data specifics to separate class - Move scoped methods to ScopedMemoryAccess - 8269246: Scoped ByteBuffer vector access Changes: https://git.openjdk.java.net/jdk17/pull/129/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk17&pr=129&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8269246 Stats: 455 lines in 42 files changed: 186 ins; 95 del; 174 mod Patch: https://git.openjdk.java.net/jdk17/pull/129.diff Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/129/head:pull/129 PR: https://git.openjdk.java.net/jdk17/pull/129
