On Wed, 2 Jun 2021 17:19:06 GMT, Maurizio Cimadamore <mcimadam...@openjdk.org>
wrote:
> This patch overhauls the library loading mechanism used by the Foreign Linker
> API. We realized that, while handy, the *default* lookup abstraction
> (`LibraryLookup::ofDefault`) was behaving inconsistentlt across platforms.
>
> This patch replaces `LibraryLookup` with a simpler `SymbolLookup`
> abstraction, a functional interface. Crucially, `SymbolLookup` does not
> concern with library loading, only symbol lookup. For this reason, two
> factories are added:
>
> * `SymbolLookup::loaderLookup` - which obtains a lookup that can be used to
> lookup symbols in libraries loaded by current loader
> * `CLinker::systemLookup` - a more stable replacement for the *default*
> lookup, which looks for symbols in libc.so (or its equivalent in other
> platforms). The contents of this lookup are unspecified.
>
> Both factories are *restricted*, so they can only be called when
> `--enable-native-access` is set.
LGTM, minor nit inline
test/micro/org/openjdk/bench/jdk/incubator/foreign/points/support/PanamaPoint.java
line 62:
> 60: );
> 61: MH_distance_ptrs = abi.downcallHandle(
> 62: lookup.lookup("distance_ptrs").get(),
Spurious white space
Suggestion:
lookup.lookup("distance_ptrs").get(),
-------------
Marked as reviewed by jvernee (Reviewer).
PR: https://git.openjdk.java.net/jdk/pull/4316
