| /* |
| * Copyright (c) 2004, 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 <stdlib.h> |
| #include <string.h> |
| #include "jni_tools.h" |
| #include "agent_common.h" |
| #include "jvmti_tools.h" |
| |
| #define PASSED 0 |
| #define STATUS_FAILED 2 |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* ========================================================================== */ |
| |
| /* scaffold objects */ |
| static jlong timeout = 0; |
| |
| /* test objects */ |
| static jclass debugeeClass = NULL; |
| static jclass testedClass = NULL; |
| static jbyteArray classBytes = NULL; |
| |
| const char* CLASS_NAME = "nsk/jvmti/scenarios/bcinstr/BI03/bi03t002a"; |
| |
| /* ========================================================================== */ |
| |
| static int prepare(jvmtiEnv* jvmti, JNIEnv* jni) { |
| const char* DEBUGEE_CLASS_NAME = |
| "nsk/jvmti/scenarios/bcinstr/BI03/bi03t002"; |
| jfieldID field = NULL; |
| |
| NSK_DISPLAY1("Find class: %s\n", DEBUGEE_CLASS_NAME); |
| if (!NSK_JNI_VERIFY(jni, (debugeeClass = |
| NSK_CPP_STUB2(FindClass, jni, DEBUGEE_CLASS_NAME)) != NULL)) |
| return NSK_FALSE; |
| |
| if (!NSK_JNI_VERIFY(jni, (debugeeClass = |
| NSK_CPP_STUB2(NewGlobalRef, jni, debugeeClass)) != NULL)) |
| return NSK_FALSE; |
| |
| if (!NSK_JNI_VERIFY(jni, (field = |
| NSK_CPP_STUB4(GetStaticFieldID, jni, debugeeClass, |
| "newClassBytes", "[B")) != NULL)) |
| return NSK_FALSE; |
| |
| if (!NSK_JNI_VERIFY(jni, (classBytes = (jbyteArray) |
| NSK_CPP_STUB3(GetStaticObjectField, jni, debugeeClass, field)) |
| != NULL)) |
| return NSK_FALSE; |
| |
| if (!NSK_JNI_VERIFY(jni, (classBytes = |
| NSK_CPP_STUB2(NewGlobalRef, jni, classBytes)) != NULL)) |
| return NSK_FALSE; |
| |
| NSK_DISPLAY1("Find class: %s\n", CLASS_NAME); |
| if (!NSK_JNI_VERIFY(jni, (testedClass = |
| NSK_CPP_STUB2(FindClass, jni, CLASS_NAME)) != NULL)) |
| return NSK_FALSE; |
| |
| if (!NSK_JNI_VERIFY(jni, (testedClass = |
| NSK_CPP_STUB2(NewGlobalRef, jni, testedClass)) != NULL)) |
| return NSK_FALSE; |
| |
| return NSK_TRUE; |
| } |
| |
| /* ========================================================================== */ |
| |
| static int redefine(jvmtiEnv* jvmti, JNIEnv* jni) { |
| jvmtiClassDefinition class_def; |
| |
| NSK_DISPLAY0("Redefining ...\n"); |
| |
| if (!NSK_JNI_VERIFY(jni, (class_def.class_byte_count = |
| NSK_CPP_STUB2(GetArrayLength, jni, classBytes)) > 0)) |
| return NSK_TRUE; |
| |
| if (!NSK_JNI_VERIFY(jni, (class_def.class_bytes = (unsigned char*) |
| NSK_CPP_STUB3(GetByteArrayElements, jni, classBytes, NULL)) |
| != NULL)) |
| return NSK_TRUE; |
| |
| class_def.klass = testedClass; |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(RedefineClasses, jvmti, 1, &class_def))) |
| return NSK_FALSE; |
| |
| return NSK_TRUE; |
| } |
| |
| /* ========================================================================== */ |
| |
| /** Agent algorithm. */ |
| static void JNICALL |
| agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { |
| |
| if (!nsk_jvmti_waitForSync(timeout)) |
| return; |
| |
| if (!prepare(jvmti, jni)) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| if (!redefine(jvmti, jni)) |
| nsk_jvmti_setFailStatus(); |
| |
| /* resume debugee and wait for sync */ |
| if (!nsk_jvmti_resumeSync()) |
| return; |
| if (!nsk_jvmti_waitForSync(timeout)) |
| return; |
| |
| NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, debugeeClass)); |
| NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, classBytes)); |
| NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, testedClass)); |
| |
| if (!nsk_jvmti_resumeSync()) |
| return; |
| } |
| |
| /* ========================================================================== */ |
| |
| /** Agent library initialization. */ |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_bi03t002(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_bi03t002(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_bi03t002(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
| jvmtiEnv* jvmti = NULL; |
| jvmtiCapabilities caps; |
| |
| NSK_DISPLAY0("Agent_OnLoad\n"); |
| |
| if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) |
| return JNI_ERR; |
| |
| timeout = nsk_jvmti_getWaitTime() * 60 * 1000; |
| |
| if (!NSK_VERIFY((jvmti = |
| nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) |
| return JNI_ERR; |
| |
| memset(&caps, 0, sizeof(caps)); |
| caps.can_redefine_classes = 1; |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) |
| return JNI_ERR; |
| |
| if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) |
| return JNI_ERR; |
| |
| return JNI_OK; |
| } |
| |
| /* ========================================================================== */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |