libJvmtiGetAllModulesTest.c revision 12723:afedee84773e 
1/*
2 * Copyright (c) 2016, 2017, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24#include <stdio.h>
25#include <string.h>
26#include <jvmti.h>
27
28#ifdef __cplusplus
29extern "C" {
30#endif
31
32    static jvmtiEnv *jvmti = NULL;
33
34    JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
35        int err = (*jvm)->GetEnv(jvm, (void**) &jvmti, JVMTI_VERSION_9);
36        if (err != JNI_OK) {
37            return JNI_ERR;
38        }
39        return JNI_OK;
40    }
41
42    JNIEXPORT jobjectArray JNICALL
43    Java_JvmtiGetAllModulesTest_getModulesNative(JNIEnv *env, jclass cls) {
44
45        jvmtiError err;
46        jint modules_count = -1;
47        jobject* modules_ptr;
48        jobjectArray array = NULL;
49        int i = 0;
50
51        err = (*jvmti)->GetAllModules(jvmti, &modules_count, &modules_ptr);
52        if (err != JVMTI_ERROR_NONE) {
53            return NULL;
54        }
55
56        array = (*env)->NewObjectArray(env, modules_count, (*env)->FindClass(env, "java/lang/Module"), NULL);
57
58        for (i = 0; i < modules_count; ++i) {
59            (*env)->SetObjectArrayElement(env, array, i, modules_ptr[i]);
60        }
61
62        return array;
63    }
64
65#ifdef __cplusplus
66}
67#endif
68