/*

 * Copyright (c) 2017, 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 <stdio.h>

#include <stdlib.h>

#include "jni.h"

#include "jni_util.h"

static jint count = 0;

static jclass test_class;

static jint current_jni_version = JNI_VERSION_10;

JNIEXPORT jint JNICALL

JNI_OnLoad(JavaVM *vm, void *reserved) {

    JNIEnv *env;

    jclass cl;

    (*vm)->GetEnv(vm, (void **) &env, current_jni_version);

    cl = (*env)->FindClass(env, "NativeLibraryTest");

    test_class = (*env)->NewGlobalRef(env, cl);

    // increment the count when JNI_OnLoad is called

    count++;

    return current_jni_version;

}

JNIEXPORT void JNICALL

JNI_OnUnload(JavaVM *vm, void *reserved) {

    JNIEnv *env;

    jmethodID mid;

    jclass cl;

    (*vm)->GetEnv(vm, (void **) &env, current_jni_version);

    mid = (*env)->GetStaticMethodID(env, test_class, "nativeLibraryUnloaded", "()V");

    (*env)->CallStaticVoidMethod(env, test_class, mid);

    if ((*env)->ExceptionCheck(env)) {

        (*env)->ExceptionDescribe(env);

        (*env)->FatalError(env, "Exception thrown");

    }

    cl = (*env)->FindClass(env, "p/Test");

    if (cl != NULL) {

        (*env)->FatalError(env, "p/Test class should not be found");

    }

}

JNIEXPORT jint JNICALL

Java_p_Test_count

(JNIEnv *env, jclass cls) {

    return count;

}