--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/hotswap/HS202/hs202t001/hs202t001.cpp Tue Aug 28 14:37:34 2018 -0700
@@ -0,0 +1,232 @@
+/*
+ * 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"
+#include "JVMTITools.h"
+/*
+ hs202t001:
+ 1. Set breakpoints in several methods when Object.wait(),
+ Object.notify(), Object.notifyAll() are in use in these methods.
+ 2. Upon reaching a breakpoint, enable SingleStep.
+ 3. Redefine an java.lang.Object class within SingleStep callback
+ when one of its methods is called by the tested method.
+ 4. Pop a currently executed frame.
+
+*/
+#ifdef __cplusplus
+extern "C" {
+#endif
+#define FILE_NAME "nsk/jvmti/scenarios/hotswap/HS202/hs203t001/MyObject"
+#define CLASS_NAME "Lnsk/jvmti/scenarios/hotswap/HS202/hs203t001/MyObject;"
+#define METHOD_NAME "leaveMonitor"
+#define METHOD_SIGN "()V"
+#define METHOD_NOTIFYALL "notifyAll"
+
+static jvmtiEnv * jvmti;
+
+
+JNIEXPORT void JNICALL callbackClassPrepare(jvmtiEnv *jvmti,
+ JNIEnv* jni,
+ jthread thread,
+ jclass klass) {
+ char * className;
+ char * generic;
+ jvmti->GetClassSignature(klass, &className, &generic);
+ if (strcmp(className,CLASS_NAME) == 0) {
+ jmethodID method;
+ method = jni->GetMethodID(klass, METHOD_NAME, METHOD_SIGN);
+ if (method == NULL) {
+ nsk_printf("Agent:: Method is null ");
+ } else {
+ jlocation start;
+ jlocation end;
+ jvmtiError err ;
+ err=jvmti->GetMethodLocation(method, &start, &end);
+ if ( err != JVMTI_ERROR_NONE ) {
+ nsk_printf(" ## Error occured %s \n",TranslateError(err));
+ }else {
+ nsk_printf("\n Start = %d and end = %d ", start , end);
+ nsk_printf(" setting break points..");
+ err= jvmti->SetBreakpoint(method, start);
+ if (err != JVMTI_ERROR_NONE) {
+ nsk_printf(" ## Error occured %s \n",TranslateError(err));
+ } else {
+ nsk_printf(" NO ERRORS ");
+ if (nsk_jvmti_enableNotification(jvmti,JVMTI_EVENT_BREAKPOINT, NULL) == NSK_TRUE ) {
+ nsk_printf(" Enabled.. notification event ..\n");
+ }
+ }
+ }
+ }
+ }
+}
+
+/*
+ *This event call back will be called when a filed
+ *threadState is beeing upodated or beeing used in
+ *the program java flow.
+ *In this current example the code will be called
+ */
+void JNICALL callbackSingleStep(jvmtiEnv *jvmti_env,
+ JNIEnv* jni,
+ jthread thread,
+ jmethodID method,
+ jlocation location) {
+ jvmtiError err;
+ char * name;
+ char * signature;
+ char * generic ;
+ err = JVMTI_ERROR_NONE;
+ jvmti_env->GetMethodName(method, &name, &signature, &generic);
+ if (strcmp(name,METHOD_NAME) == 0) { /* same method */
+ jclass cls;
+ jmethodID mem ;
+ jvmti_env->GetMethodDeclaringClass(method, &cls);
+ mem=jni->GetMethodID(cls,METHOD_NOTIFYALL,"()V");
+ jni->CallVoidMethod(thread,mem);
+ }
+
+}
+
+void JNICALL callbackBreakpoint(jvmtiEnv *jvmti_env,
+ JNIEnv* jni_env,
+ jthread thread,
+ jmethodID method,
+ jlocation location) {
+ jvmtiError err;
+ err = JVMTI_ERROR_NONE;
+ if ( nsk_jvmti_enableNotification(jvmti,JVMTI_EVENT_SINGLE_STEP, NULL)
+ == NSK_TRUE ) {
+ nsk_printf(" Enabled.. notification event ..");
+ }
+ err= jvmti->SetEventNotificationMode(JVMTI_DISABLE,
+ JVMTI_EVENT_BREAKPOINT, NULL);
+ if (err == JVMTI_ERROR_NONE) {
+ nsk_printf(" Disabled notification..");
+ }
+
+}
+
+
+#ifdef STATIC_BUILD
+JNIEXPORT jint JNICALL Agent_OnLoad_hs202t001(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNICALL Agent_OnAttach_hs202t001(JavaVM *jvm, char *options, void *reserved) {
+ return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNI_OnLoad_hs202t001(JavaVM *jvm, char *options, void *reserved) {
+ return JNI_VERSION_1_8;
+}
+#endif
+jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) {
+ jvmtiError rc;
+ jint code;
+ nsk_printf("Agent:: VM.. Started..\n");
+ code = vm->GetEnv((void **)&jvmti, JVMTI_VERSION_1_1);
+ if ( code != 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_all_class_hook_events = 1;
+ caps.can_generate_compiled_method_load_events = 1;
+ caps.can_generate_breakpoint_events=1;
+ caps.can_generate_single_step_events=1;
+ jvmti->AddCapabilities(&caps);
+ memset(&eventCallbacks, 0, sizeof(eventCallbacks));
+ eventCallbacks.ClassPrepare =callbackClassPrepare;
+ eventCallbacks.SingleStep =callbackSingleStep;
+ eventCallbacks.Breakpoint =callbackBreakpoint;
+ rc = jvmti->SetEventCallbacks(&eventCallbacks, sizeof(eventCallbacks));
+ if (rc != JVMTI_ERROR_NONE) {
+ nsk_printf(" ## Error occured %s \n",TranslateError(rc));
+ return JNI_ERR;
+ }
+ if ( nsk_jvmti_enableNotification(jvmti,JVMTI_EVENT_CLASS_PREPARE, NULL) == NSK_TRUE ) {
+ nsk_printf("Agent :: NOTIFICATIONS ARE ENABLED \n");
+ } else {
+ nsk_printf(" Error in Eanableing Notifications..");
+ }
+ }
+ return JNI_OK;
+}
+
+JNIEXPORT jboolean JNICALL
+Java_nsk_jvmti_scenarios_hotswap_HS202_hs202t001_hs202t001_popThreadFrame(JNIEnv * jni,
+ jclass clas,
+ jthread thread) {
+ jvmtiError err ;
+ jboolean retvalue;
+ jint state;
+ nsk_printf("Agent:: POPING THE FRAME....\n");
+ retvalue = JNI_FALSE;
+ jvmti->GetThreadState(thread, &state);
+ if ( state & JVMTI_THREAD_STATE_SUSPENDED) {
+ err = jvmti->PopFrame(thread);
+ if (err == JVMTI_ERROR_NONE) {
+ nsk_printf("Agent:: NO Errors poped very well ..\n");
+ retvalue=JNI_OK;
+ return retvalue;
+ } else if (err != JVMTI_ERROR_NONE) {
+ nsk_printf(" ## Error occured %s \n",TranslateError(err));
+ }
+ nsk_printf("Agent:: some other error ..\n");
+ } 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_hs202t001_hs202t001_resumeThread(JNIEnv * jni,
+ jclass clas,
+ jthread thread) {
+ jvmtiError err ;
+ jboolean retvalue;
+ retvalue = JNI_FALSE;
+ err = jvmti->ResumeThread(thread);
+ if (err == JVMTI_ERROR_NONE) {
+ nsk_printf(" Agent:: Thread Resumed.. \n");
+ retvalue=JNI_OK;
+ } else {
+ nsk_printf(" Agent:: Failed.. to Resume the thread.\n");
+ }
+ return retvalue;
+}
+
+#ifdef __cplusplus
+}
+#endif