1 /*
 2  * Copyright (c) 2026, 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 "jni.h"
25 #include "jvmti.h"
26 
27 extern "C" {
28 
29 static jvmtiEnv *jvmti;
30 
31 JNIEXPORT void JNICALL Java_GetClassModifiers_init(JNIEnv *env, jclass clazz) {
32   JavaVM* vm;
33   jint res;
34   res = env->GetJavaVM(&vm);
35   if (res != 0) {
36     env->FatalError("GetJavaVM failed");
37   } else {
38     res = vm->GetEnv((void**)&jvmti, JVMTI_VERSION);
39     if (res != JNI_OK) {
40       env->FatalError("GetEnv failed");
41     }
42   }
43 }
44 
45 JNIEXPORT jint JNICALL Java_GetClassModifiers_getClassModifiers(JNIEnv *env, jclass ignore, jclass target) {
46   jvmtiError err;
47   jint modifiers;
48   err = jvmti->GetClassModifiers(target, &modifiers);
49   if (err != JVMTI_ERROR_NONE) {
50     env->FatalError("GetClassModifiers failed");
51   }
52   return modifiers;
53 }
54 
55 }