| /* |
| * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| #include <jni.h> |
| #include <jvmti.h> |
| #include "agent_common.h" |
| #include <string.h> |
| #include "jvmti_tools.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| #define FILE_NAME "nsk/jvmti/scenarios/hotswap/HS301/hs301t003/MyClass" |
| #define CLASS_NAME "Lnsk/jvmti/scenarios/hotswap/HS301/hs301t003/MyClass;" |
| |
| void JNICALL callbackClassPrepare(jvmtiEnv *jvmti_env, |
| JNIEnv* jni_env, |
| jthread thread, |
| jclass klass) { |
| char * className; |
| char * generic; |
| if ( ! NSK_JVMTI_VERIFY ( NSK_CPP_STUB4(GetClassSignature, |
| jvmti_env, klass, &className, &generic) ) ) { |
| nsk_printf(" Agent:: Error while getting ClassFileName Signature "); |
| } else { |
| if (strcmp(className, CLASS_NAME ) == 0) { |
| int redefineNumber =0; |
| char fileName[512]; |
| nsk_jvmti_getFileName(redefineNumber, FILE_NAME, |
| fileName, sizeof(fileName)/sizeof(char)); |
| nsk_jvmti_disableNotification(jvmti_env, |
| JVMTI_EVENT_CLASS_LOAD, NULL ); |
| if (nsk_jvmti_redefineClass(jvmti_env, klass, fileName) == NSK_TRUE) { |
| nsk_printf("\n Redefine successful.\n"); |
| } else { |
| nsk_printf("\n Redefine failed.\n"); |
| } |
| } |
| } |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_hs301t003(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_hs301t003(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_hs301t003(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) { |
| jvmtiEnv * jvmti; |
| nsk_printf("Agent:: Agent_OnLoad.\n"); |
| if ( ! NSK_JVMTI_VERIFY ( NSK_CPP_STUB3(GetEnv, vm, |
| (void **)&jvmti, JVMTI_VERSION_1_1) ) ) { |
| nsk_printf("Agent:: Could not load JVMTI interface.\n"); |
| return JNI_ERR; |
| } else { |
| jvmtiCapabilities caps; |
| jvmtiEventCallbacks eventCallbacks; |
| if (nsk_jvmti_parseOptions(options) == NSK_FALSE ) { |
| nsk_printf("# error agent Failed to parse options.\n"); |
| return JNI_ERR; |
| } |
| memset(&caps, 0, sizeof(caps)); |
| caps.can_redefine_classes = 1; |
| caps.can_generate_all_class_hook_events=1; |
| if (! NSK_JVMTI_VERIFY ( NSK_CPP_STUB2(AddCapabilities, jvmti, &caps) )) { |
| nsk_printf(" Agent:: Error occured while adding capabilities.\n"); |
| return JNI_ERR; |
| } |
| memset(&eventCallbacks, 0, sizeof(eventCallbacks)); |
| eventCallbacks.ClassPrepare = &callbackClassPrepare; |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB3(SetEventCallbacks, jvmti, |
| &eventCallbacks, sizeof(eventCallbacks)))) { |
| nsk_printf(" Agent:: Error occured while setting event call back.\n"); |
| return JNI_ERR; |
| } |
| if ( nsk_jvmti_enableNotification(jvmti, JVMTI_EVENT_CLASS_PREPARE, NULL) == NSK_TRUE ) { |
| nsk_printf(" Agent:: Enabled notification.\n"); |
| } else { |
| nsk_printf(" Agent:: Failed to enable notification.\n"); |
| } |
| } |
| return JNI_OK; |
| } |
| #ifdef __cplusplus |
| } |
| #endif |