author | iignatyev |
Tue, 28 Aug 2018 14:37:34 -0700 | |
changeset 51551 | e409244ce72e |
parent 50260 | test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/hotswap/HS301/hs301t004/hs301t004.c@46c67f5e27c2 |
child 51774 | 79dc492c00ab |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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#include <jni.h> |
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#include <jvmti.h> |
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#include "agent_common.h" |
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#include <string.h> |
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#include "jvmti_tools.h" |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#define FILE_NAME "nsk/jvmti/scenarios/hotswap/HS301/hs301t004/MyClass" |
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#define CLASS_NAME "Lnsk/jvmti/scenarios/hotswap/HS301/hs301t004/MyClass;" |
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void JNICALL callbackClassPrepare(jvmtiEnv *jvmti_env, |
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JNIEnv* jni_env, |
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jthread thread, |
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jclass klass) { |
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char * className; |
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char * generic; |
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int redefineNumber=0; |
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if (! NSK_JVMTI_VERIFY( NSK_CPP_STUB4(GetClassSignature, |
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jvmti_env, klass, &className, &generic)) ) { |
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nsk_printf(" Agent :: Error occured in getting class signature.\n"); |
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return; |
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} else { |
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if (strcmp(className, CLASS_NAME) == 0) { |
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int redefineNumber =0; |
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char fileName[512]; |
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nsk_jvmti_disableNotification(jvmti_env, JVMTI_EVENT_CLASS_PREPARE, NULL ); |
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nsk_jvmti_getFileName(redefineNumber, FILE_NAME, fileName, |
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sizeof(fileName)/sizeof(char)); |
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if (nsk_jvmti_redefineClass(jvmti_env, klass, fileName) == NSK_TRUE ) { |
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nsk_printf("Agent:: Redefine successful.\n"); |
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} else { |
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nsk_printf("Agent:: Redefine failed.\n"); |
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} |
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} |
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} |
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} |
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#ifdef STATIC_BUILD |
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JNIEXPORT jint JNICALL Agent_OnLoad_hs301t004(JavaVM *jvm, char *options, void *reserved) { |
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return Agent_Initialize(jvm, options, reserved); |
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} |
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JNIEXPORT jint JNICALL Agent_OnAttach_hs301t004(JavaVM *jvm, char *options, void *reserved) { |
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return Agent_Initialize(jvm, options, reserved); |
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} |
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JNIEXPORT jint JNI_OnLoad_hs301t004(JavaVM *jvm, char *options, void *reserved) { |
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return JNI_VERSION_1_8; |
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} |
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#endif |
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jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) { |
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jvmtiEnv * jvmti; |
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nsk_printf("Agent:: VM Started.\n"); |
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if (! NSK_VERIFY ( JNI_OK == NSK_CPP_STUB3(GetEnv, |
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vm, (void **)&jvmti, JVMTI_VERSION_1_1) ) ) { |
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nsk_printf("Agent:: Could not load JVMTI interface \n"); |
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return JNI_ERR; |
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} else { |
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jvmtiCapabilities caps; |
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jvmtiEventCallbacks eventCallbacks; |
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if (nsk_jvmti_parseOptions(options) == NSK_FALSE ) { |
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nsk_printf("# error agent Failed to parse options \n"); |
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return JNI_ERR; |
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} |
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memset(&caps, 0, sizeof(caps)); |
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caps.can_redefine_classes = 1; |
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caps.can_generate_all_class_hook_events=1; |
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if ( ! NSK_JVMTI_VERIFY ( NSK_CPP_STUB2(AddCapabilities, |
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jvmti, &caps) )) { |
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nsk_printf(" Agent:: Error occured while adding capabilities.\n"); |
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return JNI_ERR; |
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} |
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memset(&eventCallbacks, 0, sizeof(eventCallbacks)); |
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eventCallbacks.ClassPrepare = &callbackClassPrepare; |
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if ( ! NSK_JVMTI_VERIFY( NSK_CPP_STUB3(SetEventCallbacks, |
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jvmti, &eventCallbacks, sizeof(eventCallbacks)) ) ) { |
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nsk_printf(" Agent:: Error occured while setting event call back \n"); |
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return JNI_ERR; |
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} |
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if ( nsk_jvmti_enableNotification(jvmti, JVMTI_EVENT_CLASS_PREPARE, NULL) == NSK_TRUE ) { |
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nsk_printf(" Enabled notification.\n"); |
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} else { |
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nsk_printf(" Failed to enable notifications.\n"); |
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} |
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} |
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return JNI_OK; |
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} |
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#ifdef __cplusplus |
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} |
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#endif |