--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/hotswap/HS302/hs302t001/hs302t001.c	Thu May 24 17:12:15 2018 -0700
@@ -0,0 +1,104 @@
+/*
+ * 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/HS302/hs302t001/MyClass"
+#define CLASS_NAME "Lnsk/jvmti/scenarios/hotswap/HS302/hs302t001/MyClass;"
+
+void JNICALL callbackClassPrepare(jvmtiEnv *jvmti_env,
+                               JNIEnv* jni_env,
+                               jthread thread,
+                               jclass klass) {
+  char * className;
+  char * generic;
+  int redefineNumber=0;
+  (*jvmti_env)->GetClassSignature(jvmti_env, klass, &className, &generic);
+  if (strcmp(className,CLASS_NAME) == 0 ) {
+    char fileName[512];
+    nsk_jvmti_getFileName(redefineNumber, FILE_NAME, fileName, sizeof(fileName)/sizeof(char));
+    nsk_jvmti_disableNotification(jvmti_env, JVMTI_EVENT_CLASS_PREPARE, NULL );
+    if ( nsk_jvmti_redefineClass(jvmti_env, klass, fileName) == NSK_TRUE ) {
+      nsk_printf("Redefine successful ..\n");
+    } else {
+      nsk_printf("# error :: Redefine failed..\n");
+    }
+  }
+}
+
+#ifdef STATIC_BUILD
+JNIEXPORT jint JNICALL Agent_OnLoad_hs302t001(JavaVM *jvm, char *options, void *reserved) {
+    return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNICALL Agent_OnAttach_hs302t001(JavaVM *jvm, char *options, void *reserved) {
+    return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNI_OnLoad_hs302t001(JavaVM *jvm, char *options, void *reserved) {
+    return JNI_VERSION_1_8;
+}
+#endif
+jint  Agent_Initialize(JavaVM *vm, char *options, void *reserved) {
+    jint rc ;
+    jvmtiEnv * jvmti;
+    nsk_printf("Agent:: VM.. Started..\n");
+    rc=(*vm)->GetEnv(vm, (void **)&jvmti, JVMTI_VERSION_1_1);
+    if ( rc!= JNI_OK ) {
+        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;
+        (*jvmti)->AddCapabilities(jvmti, &caps);
+        memset(&eventCallbacks, 0, sizeof(eventCallbacks));
+        eventCallbacks.ClassPrepare = &callbackClassPrepare;
+        rc=(*jvmti)->SetEventCallbacks(jvmti,&eventCallbacks, sizeof(eventCallbacks));
+        if (rc != JVMTI_ERROR_NONE) {
+            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(" Enabled. noftification..");
+        } else {
+            nsk_printf(" Failed to Enable ..");
+        }
+    }
+    return JNI_OK;
+}
+
+#ifdef __cplusplus
+}
+#endif