Allows programmers to enable the Foreign Linker API without adding JVM parameters -Dforeign.restricted=permit or --ensure-native-access.
Java 16 or higher is required.
This library can't avoid other limitations of the incubator module.
You still need to add --add-module jdk.incubator.foreign and --enable-preview options to JVM for use jdk.incubator.foreign module.
ForeignHacker.enableForeignAccess(module);Please visit releases.
repositories {
maven { url 'https://jitpack.io' }
}
implementation group: 'org.glavo', name: 'foreign-hacker', version: "0.2.1"import jdk.incubator.foreign.*;
import org.glavo.foreign.hacker.ForeignHacker;
import java.lang.invoke.MethodType;
public final class Main {
public static void main(String[] args) throws Throwable {
ForeignHacker.enableForeignAccess(Main.class.getModule());
LibraryLookup l = LibraryLookup.ofDefault();
var handle = CLinker.getInstance().downcallHandle(
l.lookup("strlen").orElse(null),
MethodType.methodType(int.class, MemoryAddress.class),
FunctionDescriptor.of(CLinker.C_INT, CLinker.C_POINTER)
);
try (MemorySegment str = CLinker.toCString("str")) {
System.out.println((int) handle.invokeExact(str.address()));
}
}
}
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