--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/hotswap/HS301/hs301t003/hs301t003.c	Thu May 24 17:12:15 2018 -0700
@@ -0,0 +1,111 @@
+/*
+ * 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