1 /*
 2  * Copyright (c) 2023, 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 static jvmtiEnv *jvmti;
28 
29 JNIEXPORT void JNICALL Java_GetThreadStateTest_init(JNIEnv *env, jclass clazz) {
30     JavaVM* vm;
31     jint res;
32     res = (*env)->GetJavaVM(env, &vm);
33     if (res != 0) {
34         (*env)->FatalError(env, "GetJavaVM failed");
35     } else {
36         res = (*vm)->GetEnv(vm, (void**)&jvmti, JVMTI_VERSION);
37         if (res != JNI_OK) {
38             (*env)->FatalError(env, "GetEnv failed");
39         }
40     }
41 }
42 
43 JNIEXPORT jint JNICALL Java_GetThreadStateTest_jvmtiState(JNIEnv *env, jclass clazz, jobject thread) {
44     jvmtiError err;
45     jint state = 0;
46     err = (*jvmti)->GetThreadState(jvmti, thread, &state);
47     if (err != JVMTI_ERROR_NONE) {
48         (*env)->FatalError(env, "GetThreadState failed");
49     }
50     return state;
51 }