--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/hotswap/HS204/hs204t003/hs204t003.c Thu May 24 17:12:15 2018 -0700
@@ -0,0 +1,257 @@
+/*
+ * 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 <stdlib.h>
+#include <string.h>
+#include <jvmti.h>
+#include "agent_common.h"
+#include <jni.h>
+#include "jvmti_tools.h"
+#include "jni_tools.h"
+#include "JVMTITools.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define FILE_NAME "nsk/jvmti/scenarios/hotswap/HS204/hs204t003/MyThread"
+#define CLASS_NAME "Lnsk/jvmti/scenarios/hotswap/HS204/hs204t003/MyThread;"
+#define FIELDNAME "intState"
+#define TYPE "I"
+
+static jint redefineNumber;
+static jvmtiEnv * jvmti;
+static jclass watchFieldClass;
+
+JNIEXPORT void JNICALL callbackClassPrepare(jvmtiEnv *jvmti_env,
+ JNIEnv* jni,
+ jthread thread,
+ jclass klass) {
+ char * className;
+ char * generic;
+
+ className = NULL;
+ generic = NULL;
+ redefineNumber=0;
+ if ( !NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature, jvmti_env,
+ klass, &className, &generic)) ) {
+ NSK_DISPLAY0(" Agent :: Failed get class signature.\n");
+ nsk_jvmti_agentFailed();
+ } else {
+ if( (strcmp(className, CLASS_NAME) == 0 ) ) {
+ jfieldID fieldId;
+ if ( ! NSK_JNI_VERIFY(jni, (fieldId = NSK_CPP_STUB4(GetStaticFieldID,
+ jni, klass, FIELDNAME, TYPE) ) != NULL ) ) {
+ NSK_DISPLAY0(" Agent :: Failed to get FieldId.\n");
+ nsk_jvmti_agentFailed();
+ } else {
+ if ( ! NSK_JVMTI_VERIFY( NSK_CPP_STUB3(SetFieldAccessWatch,
+ jvmti_env, klass, fieldId) ) ) {
+ NSK_DISPLAY0(" Agent :: Failed to set watch point on a field.\n");
+ nsk_jvmti_agentFailed();
+ } else {
+ nsk_jvmti_enableNotification(jvmti_env, JVMTI_EVENT_FIELD_ACCESS, NULL);
+ if (! NSK_JNI_VERIFY(jni,
+ ( watchFieldClass = (jclass)
+ NSK_CPP_STUB2(NewGlobalRef, jni, klass) )
+ != NULL ) ) {
+ NSK_DISPLAY0(" Agent :: Failed to get global reference for class.\n");
+ nsk_jvmti_agentFailed();
+ }
+ NSK_DISPLAY0(" Agent :: SetFieldAccessWatch.\n");
+ }
+ }
+ NSK_DISPLAY1(" Agent :: Leaving callbackClassPrepare for class = %s .\n", className);
+ }
+ }
+
+ if ( className != NULL ) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char *)className))) {
+ NSK_DISPLAY1(" Agent :: #error failed to Deallocate className = %s.", className);
+ nsk_jvmti_agentFailed();
+ }
+ }
+
+ if ( generic != NULL ) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char *)generic))) {
+ NSK_DISPLAY1(" Agent :: #error failed to Deallocate class signature = %s.", generic);
+ nsk_jvmti_agentFailed();
+ }
+ }
+ return;
+}
+
+JNIEXPORT void JNICALL callbackFieldAccess(jvmtiEnv *jvmti_env,
+ JNIEnv* jni,
+ jthread thread,
+ jmethodID method,
+ jlocation location,
+ jclass field_klass,
+ jobject object,
+ jfieldID field) {
+ char fileName[512];
+ char * className;
+ char * generic;
+
+ className = NULL;
+ generic = NULL;
+ if (redefineNumber != 0 ) {
+ return;
+ }
+ if ( ! NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature, jvmti_env,
+ field_klass, &className, &generic)) ) {
+ NSK_DISPLAY0(" Agent :: Failed get class signature.\n");
+ nsk_jvmti_agentFailed();
+ } else {
+ if( (strcmp(className, CLASS_NAME) == 0 ) ) {
+ jvmtiThreadInfo info;
+ nsk_jvmti_getFileName(redefineNumber, FILE_NAME, fileName,
+ sizeof(fileName)/sizeof(char));
+ if ( nsk_jvmti_redefineClass(jvmti_env, field_klass, fileName) == NSK_TRUE ) {
+ NSK_DISPLAY0(" Agent :: Successfully redefined.\n");
+ redefineNumber++;
+ } else {
+ NSK_DISPLAY0(" Agent :: Failed to redefine.\n");
+ nsk_jvmti_agentFailed();
+ }
+ NSK_DISPLAY0(" Agent :: Before attempting thread suspend.\n");
+ if ( ! NSK_JVMTI_VERIFY( NSK_CPP_STUB3(GetThreadInfo, jvmti_env, thread , &info)) ) {
+ NSK_DISPLAY0(" Agent :: error getting thread info ");
+ nsk_jvmti_agentFailed();
+ } else {
+ NSK_DISPLAY1(" Agent :: Thread Name = %s .\n", info.name);
+ }
+ if ( ! NSK_JVMTI_VERIFY( NSK_CPP_STUB2(SuspendThread, jvmti_env, thread)) ) {
+ NSK_DISPLAY0(" Agent :: Failed to suspend thread.\n");
+ nsk_jvmti_agentFailed();
+ }
+ }
+ }
+
+ if ( className != NULL ) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char *)className))) {
+ NSK_DISPLAY1(" Agent :: #error failed to Deallocate className = %s.", className);
+ nsk_jvmti_agentFailed();
+ }
+ }
+
+ if ( generic != NULL ) {
+ if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char *)generic))) {
+ NSK_DISPLAY1(" Agent :: #error failed to Deallocate class signature = %s.", generic);
+ nsk_jvmti_agentFailed();
+ }
+ }
+}
+
+#ifdef STATIC_BUILD
+JNIEXPORT jint JNICALL Agent_OnLoad_hs204t003(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNICALL Agent_OnAttach_hs204t003(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNI_OnLoad_hs204t003(JavaVM *jvm, char *options, void *reserved) {
+ return JNI_VERSION_1_8;
+}
+#endif
+jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) {
+ if ( ! NSK_JVMTI_VERIFY ( NSK_CPP_STUB3(GetEnv, vm,
+ (void **)&jvmti, JVMTI_VERSION_1_1) ) ) {
+ NSK_DISPLAY0("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_DISPLAY0(" NSK Failed to parse..");
+ return JNI_ERR;
+ }
+ caps.can_redefine_classes = 1;
+ caps.can_generate_field_access_events = 1;
+ caps.can_pop_frame = 1;
+ caps.can_suspend = 1;
+ if ( ! NSK_JVMTI_VERIFY(NSK_CPP_STUB2( AddCapabilities, jvmti, &caps)) ) {
+ NSK_DISPLAY0(" Agent :: Failed add required capabilities\n.");
+ return JNI_ERR;
+ }
+ memset(&eventCallbacks, 0, sizeof(eventCallbacks));
+ eventCallbacks.ClassPrepare = callbackClassPrepare;
+ eventCallbacks.FieldAccess = callbackFieldAccess;
+ if (!NSK_JVMTI_VERIFY( NSK_CPP_STUB3(SetEventCallbacks, jvmti,
+ &eventCallbacks, sizeof(eventCallbacks) ) ) ) {
+ NSK_DISPLAY0(" Agent :: Error occured while setting event call back \n");
+ return JNI_ERR;
+ }
+ nsk_jvmti_enableNotification(jvmti, JVMTI_EVENT_CLASS_PREPARE, NULL);
+ }
+ return JNI_OK;
+}
+
+JNIEXPORT jboolean JNICALL
+Java_nsk_jvmti_scenarios_hotswap_HS204_hs204t003_hs204t003_popFrame(JNIEnv * jni,
+ jobject object,
+ jthread thread) {
+ jboolean retvalue;
+ jint state;
+ retvalue = JNI_FALSE;
+ if (! NSK_JVMTI_VERIFY( NSK_CPP_STUB3(GetThreadState, jvmti, thread, &state)) ){
+ NSK_DISPLAY0(" Agent :: Error getting thread state.\n");
+ nsk_jvmti_agentFailed();
+ } else {
+ if ( state & JVMTI_THREAD_STATE_SUSPENDED) {
+ NSK_DISPLAY0(" Agent :: Thread state = JVMTI_THREAD_STATE_SUSPENDED.\n");
+ if ( ! NSK_JVMTI_VERIFY ( NSK_CPP_STUB2(PopFrame, jvmti, thread) ) ) {
+ NSK_DISPLAY0("#error Agent :: Jvmti failed to do popFrame.\n");
+ nsk_jvmti_agentFailed();
+ } else {
+ if ( ! NSK_JVMTI_VERIFY ( NSK_CPP_STUB2(ResumeThread, jvmti, thread)) ) {
+ NSK_DISPLAY0(" Agent :: Error occured in resuming a thread.\n");
+ nsk_jvmti_agentFailed();
+ } else {
+ jfieldID fieldId;
+ if ( ! NSK_JNI_VERIFY(jni, (fieldId = NSK_CPP_STUB4(GetStaticFieldID,
+ jni, watchFieldClass, FIELDNAME, TYPE) ) != NULL ) ) {
+ NSK_DISPLAY0(" Agent :: Failed to get FieldId before droping watchers.\n");
+ nsk_jvmti_agentFailed();
+ } else {
+ if ( ! NSK_JVMTI_VERIFY ( NSK_CPP_STUB3(ClearFieldAccessWatch,
+ jvmti, watchFieldClass, fieldId)) ) {
+ NSK_DISPLAY0(" Agent :: failed to drop field watces.\n");
+ nsk_jvmti_agentFailed();
+ } else {
+ NSK_DISPLAY0(" Agent :: Sucessfully droped watches.\n");
+ retvalue = JNI_TRUE;
+ }
+ }
+ }
+ }
+ } else {
+ NSK_DISPLAY0(" Agent :: Thread should be suspended to its pop frame.\n");
+ }
+ }
+ return retvalue;
+}
+#ifdef __cplusplus
+}
+#endif