test/jdk/java/foreign/libNativeAccess.c

/*
 * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

#include "jni.h"
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>

JNIEXPORT jbyte JNICALL
Java_TestNative_getByteRaw(JNIEnv *env, jclass cls, jlong addr, jint index) {
    jbyte *arr = (jbyte*)(uintptr_t)addr;
    return arr[index];
}

JNIEXPORT jbyte JNICALL
Java_TestNative_getByteBuffer(JNIEnv *env, jclass cls, jobject buf, jint index) {
    jlong addr = (jlong)(uintptr_t)(*env)->GetDirectBufferAddress(env, buf);
    return Java_TestNative_getByteRaw(env, cls, addr, index);
}

JNIEXPORT jchar JNICALL
Java_TestNative_getCharRaw(JNIEnv *env, jclass cls, jlong addr, jint index) {
    jchar *arr = (jchar*)(uintptr_t)addr;
    return arr[index];
}

JNIEXPORT jchar JNICALL
Java_TestNative_getCharBuffer(JNIEnv *env, jclass cls, jobject buf, jint index) {
    jlong addr = (jlong)(uintptr_t)(*env)->GetDirectBufferAddress(env, buf);
    return Java_TestNative_getCharRaw(env, cls, addr, index);
}

JNIEXPORT jshort JNICALL
Java_TestNative_getShortRaw(JNIEnv *env, jclass cls, jlong addr, jint index) {
    jshort *arr = (jshort*)(uintptr_t)addr;
    return arr[index];
}

JNIEXPORT jshort JNICALL
Java_TestNative_getShortBuffer(JNIEnv *env, jclass cls, jobject buf, jint index) {
    jlong addr = (jlong)(uintptr_t)(*env)->GetDirectBufferAddress(env, buf);
    return Java_TestNative_getShortRaw(env, cls, addr, index);
}

JNIEXPORT jint JNICALL
Java_TestNative_getIntRaw(JNIEnv *env, jclass cls, jlong addr, jint index) {
    jint *arr = (jint*)(uintptr_t)addr;
    return arr[index];
}

JNIEXPORT jint JNICALL
Java_TestNative_getIntBuffer(JNIEnv *env, jclass cls, jobject buf, jint index) {
    jlong addr = (jlong)(uintptr_t)(*env)->GetDirectBufferAddress(env, buf);
    return Java_TestNative_getIntRaw(env, cls, addr, index);
}

JNIEXPORT jfloat JNICALL
Java_TestNative_getFloatRaw(JNIEnv *env, jclass cls, jlong addr, jint index) {
    jfloat *arr = (jfloat*)(uintptr_t)addr;
    return arr[index];
}

JNIEXPORT jfloat JNICALL
Java_TestNative_getFloatBuffer(JNIEnv *env, jclass cls, jobject buf, jint index) {
    jlong addr = (jlong)(uintptr_t)(*env)->GetDirectBufferAddress(env, buf);
    return Java_TestNative_getFloatRaw(env, cls, addr, index);
}

JNIEXPORT jlong JNICALL
Java_TestNative_getLongRaw(JNIEnv *env, jclass cls, jlong addr, jint index) {
    jlong *arr = (jlong*)(uintptr_t)addr;
    return arr[index];
}

JNIEXPORT jlong JNICALL
Java_TestNative_getLongBuffer(JNIEnv *env, jclass cls, jobject buf, jint index) {
    jlong addr = (jlong)(uintptr_t)(*env)->GetDirectBufferAddress(env, buf);
    return Java_TestNative_getLongRaw(env, cls, addr, index);
}

JNIEXPORT jdouble JNICALL
Java_TestNative_getDoubleRaw(JNIEnv *env, jclass cls, jlong addr, jint index) {
    jdouble *arr = (jdouble*)(uintptr_t)addr;
    return arr[index];
}

JNIEXPORT jdouble JNICALL
Java_TestNative_getDoubleBuffer(JNIEnv *env, jclass cls, jobject buf, jint index) {
    jlong addr = (jlong)(uintptr_t)(*env)->GetDirectBufferAddress(env, buf);
    return Java_TestNative_getDoubleRaw(env, cls, addr, index);
}

JNIEXPORT jlong JNICALL
Java_TestNative_getCapacity(JNIEnv *env, jclass cls, jobject buf) {
    return (*env)->GetDirectBufferCapacity(env, buf);
}