test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/hotswap/HS201/hs201t002/hs201t002.c
changeset 50260 46c67f5e27c2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/vmTestbase/nsk/jvmti/scenarios/hotswap/HS201/hs201t002/hs201t002.c	Thu May 24 17:12:15 2018 -0700
@@ -0,0 +1,737 @@
+/*
+ * Copyright (c) 2004, 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 <string.h>
+#include "jvmti.h"
+#include "agent_common.h"
+#include "jni_tools.h"
+#include "jvmti_tools.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* ============================================================================= */
+
+/* scaffold objects */
+static JNIEnv* jni = NULL;
+static jvmtiEnv *jvmti = NULL;
+static jlong timeout = 0;
+
+/* constant names */
+#define EXPECTED_CLASS_NAME "nsk/jvmti/scenarios/hotswap/HS201/hs201t002a"
+#define EXPECTED_CLASS_SIGN "Lnsk/jvmti/scenarios/hotswap/HS201/hs201t002a;"
+#define METHOD_NAME "doInit"
+#define METHOD_SIG "()V"
+#define LOCAL_VARIABLE_NAME "localVariable"
+#define PATH_TO_NEW_BYTECODE "pathToNewByteCode"
+
+static jint testStep;
+static int redefineNumber;
+static jint newClassSize;
+static unsigned char* newClassBytes;
+static jthread testedThread;
+static jclass testClass;
+char chbuffer[255];
+
+const char* getThreadName(JNIEnv* jni_env, jthread thread);
+const char* getClassName(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jobject object);
+int readNewBytecode(jvmtiEnv* jvmti);
+int getLocalVariableValue(jvmtiEnv *jvmti_env, jthread thread, jmethodID method);
+
+/* ============================================================================= */
+
+void setCurrentStep(JNIEnv* jni_env, int value) {
+
+    jfieldID fld;
+
+    if (!NSK_JNI_VERIFY(jni_env, (fld =
+            NSK_CPP_STUB4(GetStaticFieldID, jni_env, testClass, "currentStep", "I")) != NULL)) {
+        NSK_CPP_STUB2(FatalError, jni_env,
+            "TEST FAILED: while getting currentStep fieldID\n");
+    }
+
+    if (!NSK_JNI_VERIFY_VOID(jni_env,
+            NSK_CPP_STUB4(SetStaticIntField, jni_env, testClass, fld, value))) {
+        NSK_CPP_STUB2(FatalError, jni_env,
+            "TEST FAILED: while setting  value of currentStep fieldID\n");
+    }
+
+}
+
+/* ============================================================================= */
+
+void enableEvent(jvmtiEnv *jvmti_env, jvmtiEvent event, jthread thread) {
+
+    if (!NSK_JVMTI_VERIFY(
+            NSK_CPP_STUB4(SetEventNotificationMode, jvmti_env, JVMTI_ENABLE,
+                                            event, thread))) {
+        NSK_COMPLAIN1("TEST FAILED: enabling %s\n", TranslateEvent(event));
+        nsk_jvmti_setFailStatus();
+    }
+}
+
+/* ============================================================================= */
+
+void disableEvent(jvmtiEnv *jvmti_env, jvmtiEvent event, jthread thread) {
+
+    if (!NSK_JVMTI_VERIFY(
+            NSK_CPP_STUB4(SetEventNotificationMode, jvmti_env, JVMTI_DISABLE,
+                                            event, thread))) {
+        NSK_COMPLAIN1("TEST FAILED: disabling %s\n", TranslateEvent(event));
+        nsk_jvmti_setFailStatus();
+    }
+}
+
+/* ============================================================================= */
+
+void redefineClass(jvmtiEnv *jvmti_env, jclass klass) {
+
+    jvmtiClassDefinition classDef;
+
+    char *className;
+
+    if (!NSK_JVMTI_VERIFY(
+            NSK_CPP_STUB4(GetClassSignature, jvmti_env, klass,
+                                &className, NULL))) {
+        nsk_jvmti_setFailStatus();
+        return;
+    }
+
+    if (!NSK_VERIFY(readNewBytecode(jvmti_env))) {
+        NSK_COMPLAIN0("TEST FAILED: new bytecode could not be read\n");
+        nsk_jvmti_setFailStatus();
+        return;
+    }
+
+    classDef.klass = klass;
+    classDef.class_byte_count = newClassSize;
+    classDef.class_bytes = newClassBytes;
+
+    NSK_DISPLAY1("\tredefining class %s\n", className);
+    if (!NSK_JVMTI_VERIFY(
+            NSK_CPP_STUB3(RedefineClasses, jvmti_env, 1, &classDef))) {
+        NSK_COMPLAIN1("TEST FAILED: while redefining class %s\n", className);
+        nsk_jvmti_setFailStatus();
+        return;
+    }
+
+    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
+            jvmti_env, (unsigned char*)className))) {
+        nsk_jvmti_setFailStatus();
+    }
+
+}
+
+/* ============================================================================= */
+
+/** Agent algorithm. */
+static void JNICALL
+agentProc(jvmtiEnv* jvmti, JNIEnv* agentJNI, void* arg) {
+
+    redefineNumber = 1;
+    jni = agentJNI;
+
+    NSK_DISPLAY0("Waiting for debuggee to become ready\n");
+    if (!nsk_jvmti_waitForSync(timeout))
+        return;
+
+    testStep = 1;
+    NSK_DISPLAY0("\n\n>>>> Debugge started, waiting for class loading \n");
+    if (!nsk_jvmti_resumeSync())
+        return;
+
+    NSK_DISPLAY0("Waiting for debuggee's threads to finish\n");
+    if (!nsk_jvmti_waitForSync(timeout))
+        return;
+
+    NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, testClass));
+    NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, testedThread));
+
+    NSK_DISPLAY0("Let debuggee to finish\n");
+    if (!nsk_jvmti_resumeSync())
+        return;
+}
+
+/* ============================================================================= */
+
+void setBreakPoint(jvmtiEnv *jvmti_env, JNIEnv *jni_env, jclass klass) {
+    jmethodID mid;
+
+    if (!NSK_JNI_VERIFY(jni_env, (mid = NSK_CPP_STUB4(GetMethodID,
+            jni_env, klass, METHOD_NAME, METHOD_SIG)) != NULL))
+        NSK_CPP_STUB2(FatalError, jni_env,
+            "[agent] failed to get ID for the java method\n");
+
+    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetBreakpoint,
+            jvmti_env, mid, 1)))
+        NSK_CPP_STUB2(FatalError, jni_env,
+            "[agent] failed to set breakpoint\n");
+}
+
+/* ============================================================================= */
+
+/**
+ * CLASS_LOAD callback.
+ *   -
+ */
+JNIEXPORT void JNICALL
+callbackClassLoad(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_jvmti_setFailStatus();
+        return;
+    }
+
+    if (strcmp(className, EXPECTED_CLASS_SIGN)
+                        == 0) {
+
+        NSK_DISPLAY1("\n\n>>>> Class loaded: %s", className);
+        NSK_DISPLAY0(", activating breakpoint\n");
+        setBreakPoint(jvmti_env, jni_env, klass);
+    }
+
+    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
+            jvmti_env, (unsigned char*)className))) {
+        nsk_jvmti_setFailStatus();
+    }
+
+    if (generic != NULL)
+        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
+                jvmti_env, (unsigned char*)generic))) {
+            nsk_jvmti_setFailStatus();
+        }
+}
+
+/* ============================================================================= */
+
+/**
+ * BREAKPOINT callback.
+ *   -
+ */
+JNIEXPORT void JNICALL
+callbackBreakpoint(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread,
+                         jmethodID method, jlocation location) {
+
+    NSK_DISPLAY0("\n\n>>>>Breakpoint fired, enabling SINGLE_STEP\n");
+    enableEvent(jvmti_env, JVMTI_EVENT_SINGLE_STEP, thread);
+}
+
+/* ============================================================================= */
+
+/**
+ * BREAKPOINT callback.
+ *   -
+ */
+JNIEXPORT void JNICALL
+callbackSingleStep(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread,
+                            jmethodID method, jlocation location) {
+
+    char *methodName;
+
+    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName,
+            jvmti_env, method, &methodName, NULL, NULL))) {
+        NSK_COMPLAIN0("TEST FAILED: unable to get method name during Breakpoint callback\n\n");
+    }
+
+    if (strcmp(methodName, METHOD_NAME) == 0) {
+        char *declaringClassName;
+        jclass declaringClass;
+
+        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetMethodDeclaringClass,
+                jvmti_env, method, &declaringClass))) {
+            NSK_COMPLAIN0("TEST FAILED: unable to get method name during Breakpoint callback\n\n");
+        }
+
+        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature,
+                jvmti_env, declaringClass, &declaringClassName, NULL))) {
+            NSK_COMPLAIN0("TEST FAILED: unable to get method name during Breakpoint callback\n\n");
+        }
+
+        if (strcmp(declaringClassName, EXPECTED_CLASS_SIGN) == 0) {
+            int value;
+            jboolean is_obsolete;
+
+            /* getting local variable table*/
+            value = getLocalVariableValue(jvmti_env, thread, method);
+
+            switch (testStep) {
+            case 1:
+
+                if (value == 1) {
+                    redefineClass(jvmti_env, declaringClass);
+                    testStep++;
+                }
+                break;
+
+            case 2:
+
+                NSK_DISPLAY1("\n\n>>>> Checking if redefined method is not obsolete\n", testStep);
+
+                if (!NSK_JVMTI_VERIFY(
+                            NSK_CPP_STUB3(IsMethodObsolete, jvmti, method, &is_obsolete))) {
+                    NSK_COMPLAIN0("TEST FAILED: unable to check method to be obsolete\n");
+                    nsk_jvmti_setFailStatus();
+                    return;
+                }
+
+                if (is_obsolete) {
+                    NSK_COMPLAIN0("TEST FAILED: method must not be obsolete\n");
+                    nsk_jvmti_setFailStatus();
+                }
+                testStep++;
+                break;
+
+            case 3:
+
+                NSK_DISPLAY1("\n\n>>>> Popping the currently executing frame\n", testStep);
+                testStep++;
+                setCurrentStep(jni_env, testStep);
+
+                break;
+
+            case 5:
+
+                if (value < 10) {
+                    NSK_DISPLAY1("\n\n>>>> Disabling single step\n", testStep);
+                    disableEvent(jvmti_env, JVMTI_EVENT_SINGLE_STEP, thread);
+                    setCurrentStep(jni_env, testStep);
+                }
+
+            } /* case */
+
+        }
+
+        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
+                jvmti_env, (unsigned char*) declaringClassName))) {
+            NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to method name\n\n");
+        }
+
+    }
+
+    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
+            jvmti_env, (unsigned char*) methodName))) {
+        NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to method name\n\n");
+    }
+
+}
+
+/* ============================================================================= */
+
+/**
+ * EXCEPTION callback.
+ *   -
+ */
+JNIEXPORT void JNICALL
+callbackException(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread,
+                        jmethodID method, jlocation location, jobject exception,
+                        jmethodID catch_method, jlocation catch_location) {
+
+    const char *className;
+
+    className = getClassName(jvmti_env, jni_env, exception);
+
+    if (strcmp(EXPECTED_CLASS_SIGN, className) == 0) {
+        jclass klass;
+
+        NSK_DISPLAY2("\n\n>>>> Exception %s in thread - %s\n",
+                        className, getThreadName(jni_env, thread));
+
+        testStep++;
+        if (!NSK_JNI_VERIFY(jni_env, (klass =
+                NSK_CPP_STUB2(GetObjectClass, jni_env, exception)) != NULL)) {
+            nsk_jvmti_setFailStatus();
+            return;
+        }
+
+        redefineClass(jvmti_env, klass);
+    }
+}
+
+/* ============================================================================= */
+
+/**
+ * EXCEPTION_CATCH callback.
+ *   -
+ */
+JNIEXPORT void JNICALL
+callbackExceptionCatch(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread,
+                        jmethodID method, jlocation location,
+                        jobject exception) {
+
+    const char *className;
+
+    className = getClassName(jvmti_env, jni_env, exception);
+
+    if (strcmp(EXPECTED_CLASS_SIGN, className) == 0) {
+        jclass klass;
+
+        NSK_DISPLAY2("\n\n>>>> Caught exception %s in thread - %s\n",
+                        className, getThreadName(jni_env, thread));
+
+        testStep++;
+        if (!NSK_JNI_VERIFY(jni_env, (klass =
+                NSK_CPP_STUB2(GetObjectClass, jni_env, exception)) != NULL)) {
+            nsk_jvmti_setFailStatus();
+            return;
+        }
+
+        redefineClass(jvmti_env, klass);
+    }
+}
+
+/* ============================================================================= */
+
+int readNewBytecode(jvmtiEnv* jvmti) {
+
+    char filename[256];
+    FILE *bytecode;
+    const char *pathToByteCode = nsk_jvmti_findOptionValue(PATH_TO_NEW_BYTECODE);
+    jint read_bytes;
+
+
+    if (!pathToByteCode) {
+        NSK_COMPLAIN0("TEST FAILED: error opening file\n");
+        return NSK_FALSE;
+    }
+
+    sprintf(filename,"%s/%s/%s.class",
+                pathToByteCode, "newclass", EXPECTED_CLASS_NAME);
+
+    NSK_DISPLAY1("\treading new bytecode for the tested class\n\tfile name: %s\n",
+                        filename);
+
+    bytecode = fopen(filename, "rb");
+    if (bytecode == NULL) {
+        NSK_COMPLAIN0("TEST FAILED: error opening file\n");
+        return NSK_FALSE;
+    }
+
+    fseek(bytecode, 0, SEEK_END);
+    newClassSize = ftell(bytecode);
+    rewind(bytecode);
+
+    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(Allocate, jvmti,
+                                newClassSize, &newClassBytes))) {
+        NSK_COMPLAIN0("buffer couldn't be allocated\n");
+        return NSK_FALSE;
+    }
+    read_bytes = (jint) fread(newClassBytes, 1, newClassSize, bytecode);
+    fclose(bytecode);
+    if (read_bytes != newClassSize) {
+        NSK_COMPLAIN0("TEST FAILED: error reading file\n");
+        return NSK_FALSE;
+    }
+
+    return NSK_TRUE;
+}
+
+/* ============================================================================= */
+
+const char* getThreadName(JNIEnv* jni_env, jthread thread) {
+    jmethodID methodID;
+    jclass klass;
+    jstring jthreadName;
+    const char *threadName;
+
+    strcpy(chbuffer, "");
+
+    if (!NSK_JNI_VERIFY(jni_env, (klass =
+            NSK_CPP_STUB2(GetObjectClass, jni_env, thread)) != NULL)) {
+        nsk_jvmti_setFailStatus();
+        return chbuffer;
+    }
+
+    if (!NSK_JNI_VERIFY(jni_env, (methodID =
+            NSK_CPP_STUB4(GetMethodID, jni_env, klass,
+                        "getName", "()Ljava/lang/String;")) != NULL)) {
+        nsk_jvmti_setFailStatus();
+        return chbuffer;
+    }
+
+    jthreadName = NSK_CPP_STUB3(CallObjectMethod, jni_env, thread,
+                        methodID);
+
+    threadName = NSK_CPP_STUB3(GetStringUTFChars, jni_env, jthreadName, 0);
+
+    strcpy(chbuffer, threadName);
+
+    NSK_CPP_STUB3(ReleaseStringUTFChars, jni_env, jthreadName, threadName);
+
+    return chbuffer;
+}
+
+/* ============================================================================= */
+
+const char* getClassName(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jobject object) {
+
+    char *className;
+    char *generic;
+    jclass klass;
+
+    strcpy(chbuffer, "");
+
+    if (!NSK_JNI_VERIFY(jni_env, (klass =
+            NSK_CPP_STUB2(GetObjectClass, jni_env, object)) != NULL)) {
+        nsk_jvmti_setFailStatus();
+        return chbuffer;
+    }
+
+    if (!NSK_JVMTI_VERIFY(
+            NSK_CPP_STUB4(GetClassSignature, jvmti_env, klass,
+                                &className, &generic))) {
+        nsk_jvmti_setFailStatus();
+        return chbuffer;
+    }
+
+    strcpy(chbuffer, className);
+
+    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
+            jvmti_env, (unsigned char*)className))) {
+        nsk_jvmti_setFailStatus();
+    }
+
+    if (generic != NULL)
+        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
+                jvmti_env, (unsigned char*)generic))) {
+            nsk_jvmti_setFailStatus();
+        }
+
+    return chbuffer;
+}
+
+/* ============================================================================= */
+
+int getLocalVariableValue(jvmtiEnv *jvmti_env, jthread thread,
+                                jmethodID method) {
+
+    jvmtiLocalVariableEntry *table = NULL;
+    jint entryCount = 0;
+    int i;
+    int value = -1;
+
+    /* getting local variable table*/
+    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetLocalVariableTable,
+            jvmti_env, method, &entryCount, &table))) {
+        NSK_COMPLAIN0("TEST FAILED: unable to get local variable table\n\n");
+    }
+
+    if (table != NULL) {
+        jvmtiError error;
+
+        for (i = 0; i < entryCount; i++) {
+            if (strcmp(table[i].name, LOCAL_VARIABLE_NAME) == 0) {
+                error = NSK_CPP_STUB5(GetLocalInt, jvmti_env, thread, 0,
+                                        table[i].slot, &value);
+                if (!NSK_VERIFY(error == JVMTI_ERROR_NONE
+                                || error == JVMTI_ERROR_INVALID_SLOT))
+                    NSK_COMPLAIN0("TEST FAILED: unable to get local variable table\n\n");
+            }
+        }
+
+        for (i = 0; i < entryCount; i++) {
+
+            if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
+                    jvmti_env, (unsigned char*)table[i].name))) {
+                NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to method name\n\n");
+            }
+
+            if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
+                    jvmti_env, (unsigned char*)table[i].signature))) {
+                NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to method signature\n\n");
+            }
+
+        }
+
+        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
+                jvmti_env, (unsigned char*)table))) {
+            NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to local variable table\n\n");
+        }
+
+    }
+
+    return value;
+}
+
+/* ============================================================================= */
+
+JNIEXPORT void JNICALL
+Java_nsk_jvmti_scenarios_hotswap_HS201_hs201t002_setThread(JNIEnv *env,
+                        jclass cls, jthread thread) {
+
+    if (!NSK_JNI_VERIFY(env, (testClass =
+            NSK_CPP_STUB2(NewGlobalRef, env, cls)) != NULL))
+        nsk_jvmti_setFailStatus();
+
+    if (!NSK_JNI_VERIFY(env, (testedThread =
+            NSK_CPP_STUB2(NewGlobalRef, env, thread)) != NULL))
+        nsk_jvmti_setFailStatus();
+
+}
+
+/* ============================================================================= */
+
+JNIEXPORT jboolean JNICALL
+Java_nsk_jvmti_scenarios_hotswap_HS201_hs201t002_resumeThread(JNIEnv *env,
+                        jclass cls, jthread thread) {
+
+    NSK_DISPLAY0("\tresuming thread...\n");
+    disableEvent(jvmti, JVMTI_EVENT_SINGLE_STEP, thread);
+
+    if (!NSK_JVMTI_VERIFY(
+            NSK_CPP_STUB2(ResumeThread, jvmti, thread))) {
+        NSK_COMPLAIN0("TEST FAILED: unable to resume the thread\n");
+        nsk_jvmti_setFailStatus();
+        return NSK_FALSE;
+    }
+
+    return NSK_TRUE;
+}
+
+/* ============================================================================= */
+
+JNIEXPORT jboolean JNICALL
+Java_nsk_jvmti_scenarios_hotswap_HS201_hs201t002_suspendThread(JNIEnv *env,
+                        jclass cls, jthread thread) {
+
+    NSK_DISPLAY0("\tsuspending thread...\n");
+    disableEvent(jvmti, JVMTI_EVENT_SINGLE_STEP, thread);
+
+    if (!NSK_JVMTI_VERIFY(
+            NSK_CPP_STUB2(SuspendThread, jvmti, thread))) {
+        NSK_COMPLAIN0("TEST FAILED: unable to suspend the thread\n");
+        nsk_jvmti_setFailStatus();
+        return NSK_FALSE;
+    }
+
+    return NSK_TRUE;
+}
+
+/* ============================================================================= */
+
+JNIEXPORT jboolean JNICALL
+Java_nsk_jvmti_scenarios_hotswap_HS201_hs201t002_popFrame(JNIEnv *env,
+                        jclass cls, jthread thread) {
+
+    NSK_DISPLAY0("\tpopping frame...\n");
+    if (!NSK_JVMTI_VERIFY(
+                NSK_CPP_STUB2(PopFrame, jvmti, thread))) {
+        NSK_COMPLAIN0("TEST FAILED: unable to pop the currently executed frame\n");
+        nsk_jvmti_setFailStatus();
+        return NSK_FALSE;
+    }
+
+    NSK_DISPLAY0("\tresuming thread...\n");
+    if (!NSK_JVMTI_VERIFY(
+            NSK_CPP_STUB2(ResumeThread, jvmti, thread))) {
+        NSK_COMPLAIN0("TEST FAILED: unable to resume the thread\n");
+        nsk_jvmti_setFailStatus();
+        return NSK_FALSE;
+    }
+
+    testStep++;
+    enableEvent(jvmti, JVMTI_EVENT_SINGLE_STEP, thread);
+
+    return NSK_TRUE;
+}
+
+/* ============================================================================= */
+
+/** Agent library initialization. */
+#ifdef STATIC_BUILD
+JNIEXPORT jint JNICALL Agent_OnLoad_hs201t002(JavaVM *jvm, char *options, void *reserved) {
+    return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNICALL Agent_OnAttach_hs201t002(JavaVM *jvm, char *options, void *reserved) {
+    return Agent_Initialize(jvm, options, reserved);
+}
+JNIEXPORT jint JNI_OnLoad_hs201t002(JavaVM *jvm, char *options, void *reserved) {
+    return JNI_VERSION_1_8;
+}
+#endif
+jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
+
+    if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
+        return JNI_ERR;
+
+    timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
+
+    if (!NSK_VERIFY((jvmti =
+            nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
+        return JNI_ERR;
+
+    {
+        jvmtiCapabilities caps;
+        memset(&caps, 0, sizeof(caps));
+
+        caps.can_generate_exception_events = 1;
+        caps.can_generate_breakpoint_events = 1;
+        caps.can_generate_single_step_events = 1;
+        caps.can_access_local_variables = 1;
+        caps.can_redefine_classes = 1;
+        caps.can_pop_frame = 1;
+        caps.can_suspend = 1;
+
+        if (!NSK_JVMTI_VERIFY(
+                NSK_CPP_STUB2(AddCapabilities, jvmti, &caps)))
+            return JNI_ERR;
+    }
+
+    {
+        jvmtiEventCallbacks eventCallbacks;
+        memset(&eventCallbacks, 0, sizeof(eventCallbacks));
+        eventCallbacks.ClassLoad = callbackClassLoad;
+        eventCallbacks.Exception = callbackException;
+        eventCallbacks.ExceptionCatch = callbackExceptionCatch;
+        eventCallbacks.Breakpoint = callbackBreakpoint;
+        eventCallbacks.SingleStep = callbackSingleStep;
+        if (!NSK_JVMTI_VERIFY(
+                NSK_CPP_STUB3(SetEventCallbacks, jvmti,
+                                    &eventCallbacks, sizeof(eventCallbacks))))
+            return JNI_ERR;
+    }
+
+    NSK_DISPLAY0("Enable events\n");
+
+    enableEvent(jvmti, JVMTI_EVENT_CLASS_LOAD, testedThread);
+    enableEvent(jvmti, JVMTI_EVENT_BREAKPOINT, testedThread);
+    enableEvent(jvmti, JVMTI_EVENT_EXCEPTION, testedThread);
+    enableEvent(jvmti, JVMTI_EVENT_EXCEPTION_CATCH, testedThread);
+
+    if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
+        return JNI_ERR;
+
+    return JNI_OK;
+}
+
+/* ============================================================================= */
+
+#ifdef __cplusplus
+}
+#endif