1 /* 2 * Copyright (c) 2017, 2020, 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 <stdlib.h> 26 27 #include "jni.h" 28 29 static jint count = 0; 30 static jclass test_class; 31 static jint current_jni_version = JNI_VERSION_10; 32 33 JNIEXPORT jint JNICALL 34 JNI_OnLoad(JavaVM *vm, void *reserved) { 35 JNIEnv *env; 36 jclass cl; 37 38 (*vm)->GetEnv(vm, (void **) &env, current_jni_version); 39 40 cl = (*env)->FindClass(env, "NativeLibraryTest"); 41 test_class = (*env)->NewGlobalRef(env, cl); 42 43 // increment the count when JNI_OnLoad is called 44 count++; 45 46 return current_jni_version; 47 } 48 49 JNIEXPORT void JNICALL 50 JNI_OnUnload(JavaVM *vm, void *reserved) { 51 JNIEnv *env; 52 jmethodID mid; 53 jclass cl; 54 55 (*vm)->GetEnv(vm, (void **) &env, current_jni_version); 56 mid = (*env)->GetStaticMethodID(env, test_class, "nativeLibraryUnloaded", "()V"); 57 (*env)->CallStaticVoidMethod(env, test_class, mid); 58 if ((*env)->ExceptionCheck(env)) { 59 (*env)->ExceptionDescribe(env); 60 (*env)->FatalError(env, "Exception thrown"); 61 } 62 63 cl = (*env)->FindClass(env, "p/Test"); 64 if (cl != NULL) { 65 (*env)->FatalError(env, "p/Test class should not be found"); 66 } 67 } 68 69 JNIEXPORT jint JNICALL 70 Java_p_Test_count 71 (JNIEnv *env, jclass cls) { 72 return count; 73 }