1 /* 2 * Copyright (c) 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 <stdlib.h> 26 #include <string.h> 27 28 #include "jni.h" 29 #include "jni_util.h" 30 31 static jint count = 0; 32 static jclass test_class; 33 static jint current_jni_version = JNI_VERSION_9; 34 35 JNIEXPORT jint JNICALL 36 JNI_OnLoad(JavaVM *vm, void *reserved) { 37 JNIEnv *env; 38 jclass cl; 39 40 if ((*vm)->GetEnv(vm, (void **) &env, current_jni_version) != JNI_OK) { 41 printf("Not able to get JNIEnv\n"); 42 return JNI_FALSE; 43 } 44 45 // increment the count when JNI_OnLoad is called 46 count++; 47 48 cl = (*env)->FindClass(env, "NativeLibraryTest"); 49 test_class = (*env)->NewGlobalRef(env, cl); 50 51 return current_jni_version; 52 } 53 54 JNIEXPORT void JNICALL 55 JNI_OnUnload(JavaVM *vm, void *reserved) { 56 JNIEnv *env; 57 jmethodID mid; 58 jclass cl; 59 60 if ((*vm)->GetEnv(vm, (void **) &env, current_jni_version) != JNI_OK) { 61 printf("Not able to get JNIEnv\n"); 62 } 63 64 mid = (*env)->GetStaticMethodID(env, test_class, "nativeLibraryUnloaded", "()V"); 65 (*env)->CallStaticVoidMethod(env, test_class, mid); 66 if ((*env)->ExceptionCheck(env)) { 67 (*env)->ExceptionDescribe(env); 68 (*env)->FatalError(env, "Exception thrown"); 69 } 70 71 cl = (*env)->FindClass(env, "p/Test"); 72 if (cl != NULL) { 73 (*env)->FatalError(env, "p/Test class should not be found"); 74 } 75 } 76 77 JNIEXPORT jint JNICALL 78 Java_p_Test_count 79 (JNIEnv *env, jclass cls) { 80 return count; 81 }