1 /* 2 * Copyright (c) 2003, 2018, 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 <stdarg.h> 26 #include <stdlib.h> 27 #include <string.h> 28 29 #include <jvmti.h> 30 #include "agent_common.h" 31 32 #include "nsk_tools.h" 33 #include "JVMTITools.h" 34 #include "jvmti_tools.h" 35 36 extern "C" { 37 38 #define PASSED 0 39 #define STATUS_FAILED 2 40 41 const char* CLASS_NAME = "nsk/jvmti/ClassFileLoadHook/classfloadhk001"; 42 43 static jint result = STATUS_FAILED; 44 static jvmtiEnv *jvmti = NULL; 45 static jvmtiEventCallbacks callbacks; 46 47 /** callback functions **/ 48 void JNICALL 49 ClassFileLoadHook(jvmtiEnv *jvmti_env, JNIEnv *env, jclass class_beeing_redefined, 50 jobject loader, const char* name, jobject protection_domain, 51 jint class_data_len, const unsigned char* class_data, 52 jint *new_class_data_len, unsigned char** new_class_data) { 53 54 if (name != NULL && (strcmp(name, CLASS_NAME) == 0)) { 55 NSK_DISPLAY1("CHECK PASSED: ClassFileLoadHook event received for the class \"%s\" as expected\n", 56 name); 57 result = PASSED; 58 } 59 } 60 /************************/ 61 62 JNIEXPORT jint JNICALL 63 Java_nsk_jvmti_ClassFileLoadHook_classfloadhk001_check( 64 JNIEnv *env, jobject obj) { 65 if (result == STATUS_FAILED) 66 NSK_COMPLAIN1("TEST FAILED: no JVMTI_EVENT_CLASS_FILE_LOAD_HOOK event for the class \"%s\"\n", 67 CLASS_NAME); 68 69 return result; 70 } 71 72 #ifdef STATIC_BUILD 73 JNIEXPORT jint JNICALL Agent_OnLoad_classfloadhk001(JavaVM *jvm, char *options, void *reserved) { 74 return Agent_Initialize(jvm, options, reserved); 75 } 76 JNIEXPORT jint JNICALL Agent_OnAttach_classfloadhk001(JavaVM *jvm, char *options, void *reserved) { 77 return Agent_Initialize(jvm, options, reserved); 78 } 79 JNIEXPORT jint JNI_OnLoad_classfloadhk001(JavaVM *jvm, char *options, void *reserved) { 80 return JNI_VERSION_1_8; 81 } 82 #endif 83 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { 84 /* init framework and parse options */ 85 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) 86 return JNI_ERR; 87 88 /* create JVMTI environment */ 89 if (!NSK_VERIFY((jvmti = 90 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) 91 return JNI_ERR; 92 93 NSK_DISPLAY0("setting event callbacks ...\n"); 94 (void) memset(&callbacks, 0, sizeof(callbacks)); 95 callbacks.ClassFileLoadHook = &ClassFileLoadHook; 96 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetEventCallbacks, 97 jvmti, &callbacks, sizeof(callbacks)))) 98 return JNI_ERR; 99 100 NSK_DISPLAY0("setting event callbacks done\nenabling ClassFileLoadHook event ...\n"); 101 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode, 102 jvmti, JVMTI_ENABLE, JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, NULL))) 103 return JNI_ERR; 104 NSK_DISPLAY0("enabling ClassFileLoadHook event done\n"); 105 106 return JNI_OK; 107 } 108 109 }