--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/hotswap/HS202/hs202t002/hs202t002.c Thu May 24 17:12:15 2018 -0700
@@ -0,0 +1,205 @@
+/*
+ * 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 <stdarg.h>
+#include "jvmti_tools.h"
+#include "JVMTITools.h"
+
+/*
+hs202t002:
+*/
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define FILE_NAME "nsk/jvmti/scenarios/hotswap/HS202/hs202t002/MyThread"
+#define CLASS_NAME "Lnsk/jvmti/scenarios/hotswap/HS202/hs202t002/MyThread;"
+
+#define PATH_FORMAT "%s%02d/%s"
+#define DIR_NAME "newclass"
+#define METHOD_NAME "display"
+
+static jint redefineNumber = 0;
+static jvmtiEnv * jvmti = NULL;
+
+typedef enum {
+ suspend_error = -1,
+ not_suspended,
+ suspended
+} thread_suspend_status_t;
+
+static volatile thread_suspend_status_t thread_suspend_status = not_suspended;
+
+void JNICALL callbackMethodExit(jvmtiEnv *jvmti_env,
+ JNIEnv* jni_env,
+ jthread thread,
+ jmethodID method,
+ jboolean was_popped_by_exception,
+ jvalue return_value) {
+ if ( was_popped_by_exception ) {
+ char * name;
+ char * signature;
+ char * generic ;
+ jvmtiError err;
+ err= JVMTI_ERROR_NONE;
+ (*jvmti_env)->GetMethodName(jvmti_env, method, &name, &signature, &generic);
+ if (strcmp(name,METHOD_NAME) == 0) {
+ jclass cls;
+ char fileName[512];
+ nsk_jvmti_getFileName(redefineNumber, FILE_NAME, fileName,
+ sizeof(fileName)/sizeof(char));
+ (*jvmti_env)->GetMethodDeclaringClass(jvmti_env,method, &cls);
+ if ( nsk_jvmti_redefineClass(jvmti_env, cls,fileName) == NSK_TRUE ) {
+ nsk_printf(" Agent:: redefine class success ..\n");
+ nsk_printf("Agent::SUSPENDING>> \n");
+ err=(*jvmti_env)->SuspendThread(jvmti_env,thread);
+ if (err == JVMTI_ERROR_NONE) {
+ thread_suspend_status = suspended;
+ nsk_printf("Agent:: Thread successfully suspended..\n");
+ } else if (err == JVMTI_ERROR_THREAD_SUSPENDED) {
+ thread_suspend_status = suspend_error;
+ nsk_printf(" ## Error occured %s \n",TranslateError(err));
+ }
+ }
+ }
+ }
+}
+
+#ifdef STATIC_BUILD
+JNIEXPORT jint JNICALL Agent_OnLoad_hs202t002(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNICALL Agent_OnAttach_hs202t002(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNI_OnLoad_hs202t002(JavaVM *jvm, char *options, void *reserved) {
+ return JNI_VERSION_1_8;
+}
+#endif
+jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) {
+ jint rc ;
+ nsk_printf("Agent:: VM.. Started..\n");
+ redefineNumber=0;
+ 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;
+ memset(&caps, 0, sizeof(caps));
+ if (nsk_jvmti_parseOptions(options) == NSK_FALSE ) {
+ nsk_printf("# error agent Failed to parse options \n");
+ return JNI_ERR;
+ }
+ caps.can_redefine_classes = 1;
+ caps.can_suspend = 1;
+ caps.can_pop_frame = 1;
+ caps.can_generate_method_exit_events = 1;
+ (*jvmti)->AddCapabilities(jvmti, &caps);
+ memset(&eventCallbacks, 0, sizeof(eventCallbacks));
+ eventCallbacks.MethodExit = callbackMethodExit;
+ rc=(*jvmti)->SetEventCallbacks(jvmti,&eventCallbacks, sizeof(eventCallbacks));
+ if (rc != JVMTI_ERROR_NONE) {
+ nsk_printf(" Agent:: Error occured while setting event callbacks \n");
+ return JNI_ERR;
+ }
+ if (NSK_TRUE == nsk_jvmti_enableNotification(jvmti,JVMTI_EVENT_METHOD_EXIT, NULL)) {
+ nsk_printf(" Agent :: NOTIFICATIONS ARE ENABLED \n");
+ } else {
+ nsk_printf(" Agent :: Error Enabling Notifications..");
+ }
+ }
+ return JNI_OK;
+}
+
+JNIEXPORT jboolean JNICALL
+Java_nsk_jvmti_scenarios_hotswap_HS202_hs202t002_hs202t002_popThreadFrame(JNIEnv * jni,
+ jclass clas,
+ jthread thread) {
+ jvmtiError err = JVMTI_ERROR_NONE;
+ jboolean retvalue = JNI_FALSE;
+ jint state;
+ nsk_printf("Agent:: POPPING THE FRAME..\n");
+ (*jvmti)->GetThreadState(jvmti, thread, &state);
+ if ( state & JVMTI_THREAD_STATE_SUSPENDED) {
+ err = (*jvmti)->PopFrame(jvmti,thread);
+ if (err == JVMTI_ERROR_NONE) {
+ nsk_printf("Agent:: PopFrame succeeded..\n");
+ return JNI_TRUE;
+ } else {
+ nsk_printf(" ## Error occured %s \n",TranslateError(err));
+ }
+ } else {
+ nsk_printf("Agent:: Thread was not suspened.. check for capabilities, and java method signature ");
+ }
+ return retvalue;
+}
+
+JNIEXPORT jboolean JNICALL
+Java_nsk_jvmti_scenarios_hotswap_HS202_hs202t002_hs202t002_resumeThread(JNIEnv * jni,
+ jclass clas,
+ jthread thread) {
+ jvmtiError err = JVMTI_ERROR_NONE;
+ jboolean retvalue = JNI_FALSE;
+
+ // disable notifications before resuming thread
+ // to avoid recursion on PopFrame issued reinvoke
+ if (NSK_TRUE == nsk_jvmti_disableNotification(jvmti,JVMTI_EVENT_METHOD_EXIT, NULL)) {
+ nsk_printf("Agent :: nsk_jvmti_disabled notifications..\n");
+ } else {
+ nsk_printf("Agent :: Failed to disable notifications..");
+ return JNI_FALSE;
+ }
+
+ err = (*jvmti)->ResumeThread(jvmti,thread);
+ if (err == JVMTI_ERROR_NONE) {
+ thread_suspend_status = not_suspended;
+ retvalue = JNI_TRUE;
+ nsk_printf(" Agent:: Thread Resumed.. \n");
+ } else {
+ nsk_printf(" Agent:: Failed.. to Resume the thread.\n");
+ retvalue = JNI_FALSE;
+ }
+ return retvalue;
+}
+
+JNIEXPORT jboolean JNICALL
+Java_nsk_jvmti_scenarios_hotswap_HS202_hs202t002_hs202t002_isThreadSuspended(JNIEnv* jni,
+ jclass clas,
+ jthread thread) {
+ if (suspend_error == thread_suspend_status) {
+ jclass ex_class = (*jni)->FindClass(jni, "java/lang/IllegalThreadStateException");
+ (*jni)->ThrowNew(jni, ex_class, "Thread has failed to self suspend");
+ return JNI_FALSE;
+ }
+
+ return suspended == thread_suspend_status;
+}
+
+#ifdef __cplusplus
+}
+#endif