1/*
2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26#include <stdio.h>
27#include <jni.h>
28#include "jni_util.h"
29#include "jvm.h"
30#include "management.h"
31
32#define ERR_MSG_SIZE 128
33
34const JmmInterface* jmm_interface = NULL;
35JavaVM* jvm = NULL;
36jint jmm_version = 0;
37
38JNIEXPORT jint JNICALL
39   DEF_JNI_OnLoad(JavaVM *vm, void *reserved) {
40    JNIEnv* env;
41
42    jvm = vm;
43    if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) {
44        return JNI_ERR;
45    }
46
47    jmm_interface = (JmmInterface*) JVM_GetManagement(JMM_VERSION_1_0);
48    if (jmm_interface == NULL) {
49        JNU_ThrowInternalError(env, "Unsupported Management version");
50        return JNI_ERR;
51    }
52
53    jmm_version = jmm_interface->GetVersion(env);
54    return (*env)->GetVersion(env);
55}
56
57void throw_internal_error(JNIEnv* env, const char* msg) {
58    char errmsg[128];
59
60    sprintf(errmsg, "errno: %d error: %s\n", errno, msg);
61    JNU_ThrowInternalError(env, errmsg);
62}
63