On Fri, 18 Apr 2025 17:49:35 GMT, Jorn Vernee <jver...@openjdk.org> wrote:
>> Perf numbers for simple main: >> Linking of `Class::forName0` down from ~152 to ~83 >> >> For calling little color management system >> https://bugs.openjdk.org/browse/JDK-8313344: >> JNI: ~45 >> baseline panama: ~164 >> patch: ~103 >> >> Also see #24705. > > make/jdk/src/classes/build/tools/classlist/HelloClasslist.java line 190: > >> 188: JAVA_BOOLEAN, ADDRESS, ADDRESS); >> 189: Optional<MemorySegment> symbol = >> lookup.find("Java_java_lang_Class_forName0"); >> 190: var _ = linker.downcallHandle(symbol.orElseThrow(), signature); > > FWIW, passing just the signature should result in mostly the same code being > generated. The address is just attached using MethodHandles::insertArguments. So just `Linker.nativeLinker().downcallHandle(MemorySegment.ofArray(new byte[0]), signature)` suffices? ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/24742#discussion_r2050937126
