Examples with JNINativeMethod com.oracle.svm.jni.nativeapi.JNINativeMethod used on opensource projects

Example 1 with JNINativeMethod

use of com.oracle.svm.jni.nativeapi.JNINativeMethod in project graal by oracle.

the class JNIFunctions method RegisterNatives.

/*
     * jint RegisterNatives(JNIEnv *env, jclass clazz, const JNINativeMethod *methods, jint
     * nMethods);
     */
@CEntryPoint
@CEntryPointOptions(prologue = JNIEnvironmentEnterPrologue.class, exceptionHandler = JNIExceptionHandlerReturnJniErr.class, publishAs = Publish.NotPublished, include = CEntryPointOptions.NotIncludedAutomatically.class)
static int RegisterNatives(JNIEnvironment env, JNIObjectHandle hclazz, JNINativeMethod methods, int nmethods) {
    Class<?> clazz = JNIObjectHandles.getObject(hclazz);
    Pointer p = (Pointer) methods;
    for (int i = 0; i < nmethods; i++) {
        JNINativeMethod entry = (JNINativeMethod) p;
        String name = CTypeConversion.toJavaString(entry.name());
        String signature = CTypeConversion.toJavaString(entry.signature());
        CFunctionPointer fnPtr = entry.fnPtr();
        String declaringClass = MetaUtil.toInternalName(clazz.getName());
        JNINativeLinkage linkage = JNIReflectionDictionary.singleton().getLinkage(declaringClass, name, signature);
        if (linkage != null) {
            linkage.setEntryPoint(fnPtr);
        } else {
            return JNIErrors.JNI_ERR();
        }
        p = p.add(SizeOf.get(JNINativeMethod.class));
    }
    return JNIErrors.JNI_OK();
}