| /* |
| * 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 <stdio.h> |
| #include <jvmti.h> |
| #include "agent_common.h" |
| #include <jni.h> |
| #include <string.h> |
| |
| #include "jni_tools.h" |
| #include "jvmti_tools.h" |
| |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| static JNIEnv* jni = NULL; |
| static jvmtiEnv *jvmti = NULL; |
| static jlong timeout = 0; |
| static jint testStep; |
| static jint redefineNumber; |
| static unsigned char* newClassBytes; |
| static unsigned char* path; |
| static jthread testedThread; |
| static jclass testClass; |
| static jclass myTestClass; |
| |
| #define NAME "nsk/jvmti/scenarios/hotswap/HS204/hs204t001/hs204t001R" |
| #define CLASS_NAME "Lnsk/jvmti/scenarios/hotswap/HS204/hs204t001/hs204t001R;" |
| #define PATH_TO_NEW_BYTECODE "pathToNewByteCode" |
| #define FILE_NAME "nsk/jvmti/scenarios/hotswap/HS204/hs204t001/hs204t001R" |
| static jint newClassSize; |
| |
| char *getClassName(jvmtiEnv *jvmti, jclass klass) { |
| char * className; |
| char * generic; |
| if( !NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature, jvmti, klass, &className, &generic))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| return className; |
| } |
| |
| JNIEXPORT void JNICALL |
| callbackClassLoad(jvmtiEnv *jvmti_env, |
| JNIEnv* jni_env, |
| jthread thread, |
| jclass klass) { |
| char * name; |
| name = getClassName(jvmti_env,klass); |
| if( (strcmp(name,CLASS_NAME ) == 0) && (redefineNumber== 1) ) { |
| char fileName[512]; |
| nsk_jvmti_getFileName(redefineNumber, FILE_NAME, fileName, |
| sizeof(fileName)/sizeof(char)); |
| NSK_DISPLAY1(">>>>>>CallbackClassLoad ... Name=%s... >>\n",name); |
| if ( nsk_jvmti_redefineClass(jvmti, klass, fileName) == NSK_TRUE) { |
| NSK_DISPLAY0("\nMyClass :: Successfully redefined..\n"); |
| redefineNumber++; |
| } else { |
| NSK_COMPLAIN0("\nMyClass :: Failed to redefine ..\n"); |
| } |
| /* if( (myTestClass =NSK_CPP_STUB2(NewGlobalRef,jni_env, klass)) == NULL) { |
| NSK_COMPLAIN0("Failed to create global ref..."); |
| } |
| */ |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| callbackClassPrepare(jvmtiEnv *jvmti_env, |
| JNIEnv* jni_env, |
| jthread thread, |
| jclass klass) { |
| char * name; |
| name = getClassName(jvmti_env, klass); |
| if ( (strcmp(name, CLASS_NAME) ==0 ) && (redefineNumber == 0) ) { |
| char fileName[512]; |
| nsk_jvmti_getFileName(redefineNumber, FILE_NAME, fileName, |
| sizeof(fileName)/sizeof(char)); |
| NSK_DISPLAY1(">>>>>>callbackClassPrepare ... Name=%s... >>\n",name); |
| if ( nsk_jvmti_redefineClass(jvmti, klass, fileName) == NSK_TRUE) { |
| NSK_DISPLAY0("\nMyClass :: Successfully redefined..\n"); |
| redefineNumber++; |
| } else { |
| NSK_COMPLAIN0("\nMyClass :: Failed to redefine ..\n"); |
| } |
| if( (myTestClass = NSK_CPP_STUB2(NewGlobalRef,jni_env, klass)) == NULL) { |
| NSK_COMPLAIN0("Failed to create global ref..."); |
| } |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| callbackClassFileLoadHock(jvmtiEnv *jvmti_env, |
| JNIEnv* jni_env, |
| jclass class_being_redefined, |
| jobject loader, |
| const char* name, |
| jobject protection_domain, |
| jint class_data_len, |
| const unsigned char* class_data, |
| jint* new_class_data_len, |
| unsigned char** new_class_data) { |
| if (name != NULL && strcmp(name, NAME)==0 && (redefineNumber == 1 )) { |
| NSK_DISPLAY1(">>>>>>callbackClassFileLoadHock ... Name=%s... >>\n",name); |
| /*redefineClass(jvmti_env, myTestClass);*/ |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| #ifdef STATIC_BUILD |
| Agent_OnUnload_hs204t001(JavaVM *jvm) |
| #else |
| Agent_OnUnload(JavaVM *jvm) |
| #endif |
| { |
| NSK_DISPLAY0(" VM ... Going Down.. (C/C++) \n"); |
| return; |
| } |
| |
| static void JNICALL agentProc(jvmtiEnv* jvmti, JNIEnv* agentJNI, void* arg) { |
| redefineNumber = 0; |
| jni = agentJNI; |
| testStep=1; |
| NSK_DISPLAY0("\n\n>>>> Debugge started, waiting for class loading \n"); |
| (*jni)->DeleteGlobalRef(jni,testClass); |
| (*jni)->DeleteGlobalRef(jni, testedThread); |
| NSK_DISPLAY0("Waiting for debuggee to become ready\n"); |
| if (!nsk_jvmti_waitForSync(timeout)) { |
| return; |
| } |
| testStep = 1; |
| NSK_DISPLAY0("\n\n>>>> Debugge started, waiting for class loading \n"); |
| if (!nsk_jvmti_resumeSync()) |
| return; |
| NSK_DISPLAY0("Waiting for debuggee's threads to finish\n"); |
| if (!nsk_jvmti_waitForSync(timeout)) |
| return; |
| (*jni)->DeleteGlobalRef(jni, testClass); |
| (*jni)->DeleteGlobalRef(jni, testedThread); |
| NSK_DISPLAY0("Let debuggee to finish\n"); |
| if (!nsk_jvmti_resumeSync()) |
| return; |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_hs204t001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_hs204t001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_hs204t001(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) { |
| jint rc ; |
| NSK_DISPLAY0(" VM.. Started..\n"); |
| rc=(*vm)->GetEnv(vm, (void **)&jvmti, JVMTI_VERSION_1_1); |
| if ( rc!= JNI_OK ) { |
| NSK_COMPLAIN0(" Could not load JVMTI interface \n"); |
| } else { |
| /* Open simple block for better memor usage. */ |
| jvmtiCapabilities caps; |
| memset(&caps, 0, sizeof(caps)); |
| |
| /* |
| set capabilities of |
| 1.ClassFileLoadHock, |
| 2.ClassLoad(doesn;t require any capabilities to set). |
| 3.ClassPrepare (doesn;t require any capabilitiesto set). |
| 4.Redefine (default). |
| 5.PopFrame. |
| */ |
| caps.can_generate_all_class_hook_events=1; |
| caps.can_access_local_variables = 1; |
| caps.can_generate_single_step_events=1; |
| caps.can_redefine_classes = 1; |
| caps.can_suspend = 1; |
| caps.can_pop_frame=1; |
| caps.can_generate_all_class_hook_events=1; |
| (*jvmti)->AddCapabilities(jvmti, &caps); |
| /* |
| set the method and other functions.. |
| */ |
| { |
| jvmtiEventCallbacks eventCallbacks; |
| memset(&eventCallbacks, 0, sizeof(eventCallbacks)); |
| eventCallbacks.ClassLoad = callbackClassLoad; |
| eventCallbacks.ClassPrepare=callbackClassPrepare; |
| eventCallbacks.ClassFileLoadHook=callbackClassFileLoadHock; |
| rc=(*jvmti)->SetEventCallbacks(jvmti,&eventCallbacks, sizeof(eventCallbacks)); |
| if (rc != JVMTI_ERROR_NONE) { |
| NSK_COMPLAIN0("Error setting event callbacks"); |
| return JNI_ERR; |
| } |
| } |
| { |
| nsk_jvmti_enableNotification(jvmti, JVMTI_EVENT_SINGLE_STEP, testedThread); |
| nsk_jvmti_enableNotification(jvmti, JVMTI_EVENT_CLASS_LOAD, testedThread); |
| nsk_jvmti_enableNotification(jvmti, JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, testedThread); |
| nsk_jvmti_enableNotification(jvmti, JVMTI_EVENT_CLASS_PREPARE, testedThread); |
| nsk_jvmti_enableNotification(jvmti, JVMTI_EVENT_CLASS_FILE_LOAD_HOOK,testedThread); |
| } |
| |
| if (!nsk_jvmti_setAgentProc(agentProc, NULL)) { |
| NSK_COMPLAIN0("setAgentProc failed"); |
| } |
| if (!nsk_jvmti_parseOptions(options)) { |
| NSK_COMPLAIN0("Cannot parse options"); |
| } |
| NSK_DISPLAY1("Wait time: %d\n",nsk_jvmti_getWaitTime()); |
| timeout=nsk_jvmti_getWaitTime(); |
| NSK_DISPLAY1(" returning back.. enter timeout-->%d \n",timeout); |
| return JNI_OK; |
| } |
| // TODO: shouldn't we return JNI_ERR if GetEnv failed? |
| return JNI_OK; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_scenarios_hotswap_HS204_hs204t001_hs204t001_setThread(JNIEnv * env, |
| jclass klass, |
| jobject thread) { |
| NSK_DISPLAY0(" Inside the setThread Method"); |
| if (!NSK_JNI_VERIFY(env, (testClass =(jclass) NSK_CPP_STUB2(NewGlobalRef, env, klass)) != NULL)) |
| nsk_jvmti_setFailStatus(); |
| if (!NSK_JNI_VERIFY(env, (testedThread =NSK_CPP_STUB2(NewGlobalRef, env, thread)) != NULL)) |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Java_nsk_jvmti_scenarios_hotswap_HS204_hs204t001_hs204t001_suspendThread(JNIEnv * env, |
| jclass klass, |
| jobject thread) { |
| jint state; |
| NSK_DISPLAY0("---suspend thread .. \n"); |
| if (NSK_CPP_STUB3(GetThreadState,jvmti,thread, &state) == JVMTI_ERROR_NONE) { |
| NSK_DISPLAY0(" No Errors in finding state of the thread.\n"); |
| if (state & JVMTI_THREAD_STATE_ALIVE) { |
| NSK_DISPLAY0(" Thread state is alive .. So can be suspend should be possible ..\n"); |
| nsk_jvmti_disableNotification(jvmti, JVMTI_EVENT_SINGLE_STEP, thread); |
| if (!NSK_JVMTI_VERIFY( NSK_CPP_STUB2(SuspendThread, jvmti, thread))) { |
| NSK_COMPLAIN0("TEST FAILED: unable to suspend the thread \n"); |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } else { |
| NSK_DISPLAY0(" Sucessfully suspended Thread..\n" ); |
| } |
| } else { |
| NSK_COMPLAIN0("Was not able to suspend a thread..\n"); |
| return NSK_FALSE; |
| } |
| } |
| return NSK_TRUE; |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Java_nsk_jvmti_scenarios_hotswap_HS204_hs204t001_hs204t001_popFrame(JNIEnv * env, |
| jclass klass, |
| jthread thread) { |
| jint state; |
| NSK_DISPLAY0("Inside pop_Frame method.....\n"); |
| if (NSK_CPP_STUB3(GetThreadState,jvmti,thread, &state) == JVMTI_ERROR_NONE) { |
| NSK_DISPLAY0(" Got the state of thread \n"); |
| if ( state & JVMTI_THREAD_STATE_SUSPENDED) { |
| NSK_DISPLAY0(" Thread is already in suspended mode..\n"); |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(PopFrame, jvmti, thread))) { |
| NSK_COMPLAIN0(" TEST FAILED: UNABLE TO POP FRAME \n"); |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } else { |
| NSK_DISPLAY0(" Poped frame safely.."); |
| } |
| /* We should resume that thread for next execution.. */ |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(ResumeThread, jvmti, thread))) { |
| NSK_COMPLAIN0(" TEST FAILED: UNABLE TO Resume thread \n"); |
| nsk_jvmti_setFailStatus(); |
| return NSK_FALSE; |
| } else { |
| NSK_DISPLAY0(" Resumed.. thread for next set of executions..."); |
| } |
| } else { |
| NSK_DISPLAY0(" Thread is not in Suspened State for poping its status.."); |
| } |
| } |
| return NSK_TRUE; |
| } |
| #ifdef __cplusplus |
| } |
| #endif |
