/*

 * Copyright (c) 2003, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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 <jni.h>

#include "jni_util.h"

#include "jvm.h"

#include "management.h"

#define ERR_MSG_SIZE 128

const JmmInterface* jmm_interface = NULL;

JavaVM* jvm = NULL;

jint jmm_version = 0;

JNIEXPORT jint JNICALL

   DEF_JNI_OnLoad(JavaVM *vm, void *reserved) {

    JNIEnv* env;

    jvm = vm;

    if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) {

        return JNI_ERR;

    }

    jmm_interface = (JmmInterface*) JVM_GetManagement(JMM_VERSION);

    if (jmm_interface == NULL) {

        JNU_ThrowInternalError(env, "Unsupported Management version");

        return JNI_ERR;

    }

    jmm_version = jmm_interface->GetVersion(env);

    return (*env)->GetVersion(env);

}

void throw_internal_error(JNIEnv* env, const char* msg) {

    char errmsg[128];

    sprintf(errmsg, "errno: %d error: %s\n", errno, msg);

    JNU_ThrowInternalError(env, errmsg);

}