``` #include <jvmti.h> #include <stdio.h> JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM* v...

# kotlin-native

[irus]

#include <jvmti.h>
#include <stdio.h>

JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM* vm, char* options, void* reserved) {
    return 0;
}

// SIGSEGV
@CName("Agent_OnLoad")
fun Agent_OnLoad(
    vm: CValuesRef<JavaVMVar>?,
    options: CValuesRef<ByteVar>?,
    reserved: CValuesRef<*>?
:disappointed: jint {
    println("Agent: Hello, World!")
    return 0
}

// ok
@CName("Agent_OnLoad")
fun Agent_OnLoad(
    vm: NativePtr,
    options: NativePtr,
    reserved: NativePtr
:disappointed: jint {
    println("Agent: Hello, World!")
    return 0
}

[napperley]

Do note that Kotlin Native doesn't support JNI.

[irus]

I've trying to implement JVM TI with Kotlin/Native, and I have some success, but types generated by cinterop feels wron

[olonho]

K/N does support JNI as any other C library. CPointer<JavaVMVar> and such is right type here.

[irus]

But cinterop generated CValuesRef<JavaVMVar>? here. Headers from jdk11

[irus]

I feel like generated types is wrong in other places, so they doesn't help, and I have to write bindings myself.
https://github.com/IRus/jvm-ti-kotlin/blob/master/src/linuxMain/kotlin/JvmTi.kt#L25

[irus]

Can you confirm that?

[olonho]

nope, CPointer is subclass of CValuesRef, and in this case it shall be used. cinterop is not related to the problem here, as it provides bindings to the C library from Kotlin, and in your case you produce C library from Kotlin source code.