test/hotspot/jtreg/vmTestbase/nsk/jvmti/SingleStep/singlestep001/singlestep001.c
author iignatyev
Thu, 24 May 2018 17:12:15 -0700
changeset 50260 46c67f5e27c2
permissions -rw-r--r--
8199383: [TESTBUG] Open source VM testbase JVMTI tests Reviewed-by: sspitsyn, erikj
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/*
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 * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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#include <stdio.h>
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#include <string.h>
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#include <jvmti.h>
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#include "agent_common.h"
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#include "nsk_tools.h"
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#include "JVMTITools.h"
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#include "jvmti_tools.h"
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#include "jni_tools.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define STATUS_FAILED 2
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#define PASSED 0
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#define METH_NUM 2
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static const char *METHODS[] = {
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    "bpMethod",
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    "runThis"
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};
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static const char *METHOD_SIGS[] = {
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    "()V",
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    "([Ljava/lang/String;Ljava/io/PrintStream;)I"
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};
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static volatile long stepEv[] = {0, 0};
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static const char *CLASS_SIG =
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    "Lnsk/jvmti/SingleStep/singlestep001;";
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static volatile jint result = PASSED;
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static jvmtiEnv *jvmti = NULL;
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static jvmtiEventCallbacks callbacks;
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static int vm_started = 0;
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static jrawMonitorID agent_lock;
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static void setBP(jvmtiEnv *jvmti_env, JNIEnv *env, jclass klass) {
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    jmethodID mid;
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    if (!NSK_JNI_VERIFY(env, (mid = NSK_CPP_STUB4(GetMethodID,
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            env, klass, METHODS[0], METHOD_SIGS[0])) != NULL))
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        NSK_CPP_STUB2(FatalError, env,
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            "failed to get ID for the java method\n");
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetBreakpoint,
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            jvmti_env, mid, 0)))
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        NSK_CPP_STUB2(FatalError, env,
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            "failed to set breakpoint\n");
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}
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/** callback functions **/
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void JNICALL
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ClassLoad(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread, jclass klass) {
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    char *sig, *generic;
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    (*jvmti)->RawMonitorEnter(jvmti, agent_lock);
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    if (vm_started) {
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        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature,
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                                            jvmti_env, klass, &sig, &generic)))
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            NSK_CPP_STUB2(FatalError, env,
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                          "failed to obtain a class signature\n");
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        if (sig != NULL && (strcmp(sig, CLASS_SIG) == 0)) {
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            NSK_DISPLAY1("ClassLoad event received for the class \"%s\"\n\
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\tsetting breakpoint ...\n",
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                         sig);
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            setBP(jvmti_env, env, klass);
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        }
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    }
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    (*jvmti)->RawMonitorExit(jvmti, agent_lock);
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}
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void JNICALL
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Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr, jmethodID method,
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        jlocation loc) {
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    jclass klass;
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    char *sig, *generic;
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    NSK_DISPLAY0("Breakpoint event received\n");
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetMethodDeclaringClass,
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            jvmti_env, method, &klass)))
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        NSK_COMPLAIN0("TEST FAILURE: unable to get method declaring class\n\n");
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature,
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            jvmti_env, klass, &sig, &generic)))
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        NSK_CPP_STUB2(FatalError, env,
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            "Breakpoint: failed to obtain a class signature\n");
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    if (sig != NULL && (strcmp(sig, CLASS_SIG) == 0)) {
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        NSK_DISPLAY1("method declaring class \"%s\"\n\tenabling SingleStep events ...\n",
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            sig);
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        if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
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                jvmti_env, JVMTI_ENABLE, JVMTI_EVENT_SINGLE_STEP, thr))) {
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            result = STATUS_FAILED;
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            NSK_COMPLAIN0("TEST FAILURE: cannot enable SingleStep events\n\n");
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        }
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    } else {
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        result = STATUS_FAILED;
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        NSK_COMPLAIN1("TEST FAILURE: unexpected breakpoint event in method of class \"%s\"\n\n",
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            sig);
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    }
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}
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void JNICALL
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SingleStep(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread,
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        jmethodID method, jlocation location) {
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    jclass klass;
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    char *sig, *generic, *methNam, *methSig;
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   139
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    if (result == STATUS_FAILED) {
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        return;
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    }
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   143
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    NSK_DISPLAY0(">>>> SingleStep event received\n");
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   145
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName,
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            jvmti_env, method, &methNam, &methSig, NULL))) {
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        result = STATUS_FAILED;
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        NSK_COMPLAIN0("TEST FAILED: unable to get method name during SingleStep callback\n\n");
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        return;
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   151
    }
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetMethodDeclaringClass,
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            jvmti_env, method, &klass))) {
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        result = STATUS_FAILED;
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        NSK_COMPLAIN0("TEST FAILED: unable to get method declaring class during SingleStep callback\n\n");
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        return;
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   157
    }
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   158
    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(GetClassSignature,
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            jvmti_env, klass, &sig, &generic))) {
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        result = STATUS_FAILED;
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        NSK_COMPLAIN0("TEST FAILED: unable to obtain a class signature during SingleStep callback\n\n");
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        return;
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   163
    }
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   164
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    if (sig != NULL) {
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        NSK_DISPLAY3("\tmethod name: \"%s\"\n\tsignature: \"%s\"\n\
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\tmethod declaring class: \"%s\"\n",
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                methNam, methSig, sig);
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   169
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        if (stepEv[1] == 1) {
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            result = STATUS_FAILED;
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            NSK_COMPLAIN0("TEST FAILED: SingleStep event received after disabling the event generation\n\n");
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        }
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        else if ((strcmp(methNam,METHODS[0]) == 0) &&
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                (strcmp(methSig,METHOD_SIGS[0]) == 0) &&
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                (strcmp(sig,CLASS_SIG) == 0)) {
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            stepEv[0]++;
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            NSK_DISPLAY1("CHECK PASSED: SingleStep event received for the method \"%s\" as expected\n",
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                methNam);
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        }
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        else if ((strcmp(methNam,METHODS[1]) == 0) &&
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                (strcmp(methSig,METHOD_SIGS[1]) == 0) &&
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                (strcmp(sig,CLASS_SIG) == 0)) {
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            stepEv[1]++;
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            NSK_DISPLAY1("CHECK PASSED: SingleStep event received for the method \"%s\" as expected\n\
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\tdisabling the event generation\n",
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                methNam);
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            if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
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                    jvmti_env, JVMTI_DISABLE, JVMTI_EVENT_SINGLE_STEP, thread))) {
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                result = STATUS_FAILED;
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                NSK_COMPLAIN0("TEST FAILED: cannot disable SingleStep events\n\n");
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   192
            }
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        }
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    }
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   195
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
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            jvmti_env, (unsigned char*) methNam))) {
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        result = STATUS_FAILED;
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        NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to method name\n\n");
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    }
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
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            jvmti_env, (unsigned char*) methSig))) {
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        result = STATUS_FAILED;
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        NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory pointed to method signature\n\n");
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    }
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   206
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    NSK_DISPLAY0("<<<<\n\n");
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}
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void JNICALL
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VMStart(jvmtiEnv *jvmti_env, JNIEnv* jni_env) {
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    (*jvmti)->RawMonitorEnter(jvmti, agent_lock);
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    vm_started = 1;
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    (*jvmti)->RawMonitorExit(jvmti, agent_lock);
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}
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/************************/
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JNIEXPORT jint JNICALL
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Java_nsk_jvmti_SingleStep_singlestep001_check(
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        JNIEnv *env, jobject obj) {
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    int i;
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   224
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    for (i=0; i<METH_NUM; i++)
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   226
        if (stepEv[i] == 0) {
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            result = STATUS_FAILED;
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            NSK_COMPLAIN1("TEST FAILED: no SingleStep events for the method \"%s\"\n\n",
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                METHODS[i]);
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        }
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    return result;
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}
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   234
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_singlestep001(JavaVM *jvm, char *options, void *reserved) {
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    return Agent_Initialize(jvm, options, reserved);
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   238
}
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JNIEXPORT jint JNICALL Agent_OnAttach_singlestep001(JavaVM *jvm, char *options, void *reserved) {
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    return Agent_Initialize(jvm, options, reserved);
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   241
}
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JNIEXPORT jint JNI_OnLoad_singlestep001(JavaVM *jvm, char *options, void *reserved) {
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    return JNI_VERSION_1_8;
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   244
}
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   245
#endif
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   246
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
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    jvmtiCapabilities caps;
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    /* init framework and parse options */
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   250
    if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
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   251
        return JNI_ERR;
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   252
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    /* create JVMTI environment */
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   254
    if (!NSK_VERIFY((jvmti =
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            nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
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        return JNI_ERR;
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   257
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    /* add capability to generate compiled method events */
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    memset(&caps, 0, sizeof(jvmtiCapabilities));
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    caps.can_generate_breakpoint_events = 1;
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    caps.can_generate_single_step_events = 1;
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   262
    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities,
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            jvmti, &caps)))
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        return JNI_ERR;
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   265
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(GetCapabilities,
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            jvmti, &caps)))
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        return JNI_ERR;
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    if (!caps.can_generate_single_step_events)
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        NSK_DISPLAY0("Warning: generation of single step events is not implemented\n");
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    /* set event callback */
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    NSK_DISPLAY0("setting event callbacks ...\n");
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    (void) memset(&callbacks, 0, sizeof(callbacks));
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    callbacks.ClassLoad = &ClassLoad;
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    callbacks.Breakpoint = &Breakpoint;
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    callbacks.SingleStep = &SingleStep;
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    callbacks.VMStart = &VMStart;
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetEventCallbacks,
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            jvmti, &callbacks, sizeof(callbacks))))
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        return JNI_ERR;
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    NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
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            jvmti, JVMTI_ENABLE, JVMTI_EVENT_VM_START, NULL)))
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        return JNI_ERR;
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
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            jvmti, JVMTI_ENABLE, JVMTI_EVENT_CLASS_LOAD, NULL)))
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        return JNI_ERR;
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
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            jvmti, JVMTI_ENABLE, JVMTI_EVENT_BREAKPOINT, NULL)))
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        return JNI_ERR;
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    NSK_DISPLAY0("enabling the events done\n\n");
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    if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(CreateRawMonitor,
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            jvmti, "agent lock", &agent_lock)))
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        return JNI_ERR;
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    return JNI_OK;
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}
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#ifdef __cplusplus
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}
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#endif