/*
* Copyright (c) 2003, 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"
extern "C" {
/* ============================================================================= */
static jlong timeout = 0;
#define INFO_NONE 0x00
#define INFO_ALL 0xFF
#define INFO_OBJREF 0x01
#define INFO_STACKREF 0x02
#define INFO_HEAPROOT 0x04
#define INFO_HEAPOBJ 0x08
static unsigned int info = INFO_NONE;
#define DEBUGEE_CLASS_NAME "nsk/jvmti/IterateOverReachableObjects/iterreachobj001"
#define ROOT_OBJECT_CLASS_NAME "nsk/jvmti/IterateOverReachableObjects/iterreachobj001RootTestedClass"
#define ROOT_OBJECT_CLASS_SIG "L" ROOT_OBJECT_CLASS_NAME ";"
#define CHAIN_OBJECT_CLASS_NAME "nsk/jvmti/IterateOverReachableObjects/iterreachobj001TestedClass"
#define CHAIN_OBJECT_CLASS_SIG "L" CHAIN_OBJECT_CLASS_NAME ";"
#define OBJECT_FIELD_NAME "object"
#define REACHABLE_CHAIN_FIELD_NAME "reachableChain"
#define UNREACHABLE_CHAIN_FIELD_NAME "unreachableChain"
#define TAIL_FIELD_NAME "tail"
#define DEFAULT_CHAIN_LENGTH 4
typedef struct ObjectDescStruct {
jlong tag;
jint found;
} ObjectDesc;
static int chainLength = 0;
static int objectsCount = 0;
static ObjectDesc* objectDescList = NULL;
static int fakeUserData = 0;
static int userDataError = 0;
/* ============================================================================= */
/** Obtain chain of tested objects and tag them recursively. */
static int getChainObjects(jvmtiEnv* jvmti, JNIEnv* jni, jobject firstObject,
jfieldID firstField, const char firstFieldName[],
jfieldID nextField, const char nextFieldName[],
int count, ObjectDesc objectDescList[],
jlong tag, int reachable) {
int success = NSK_TRUE;
jobject obj = NULL;
jlong objTag = (reachable ? tag : -tag);
if (count <= 0)
return NSK_TRUE;
count--;
tag++;
if (!NSK_JNI_VERIFY(jni, (obj = jni->GetObjectField(firstObject, firstField)) != NULL)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
objectDescList[count].tag = objTag;
if (!NSK_JVMTI_VERIFY(jvmti->SetTag(obj, objTag))) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY2(" tag=%-5ld object=0x%p\n", (long)objTag, (void*)obj);
if (!getChainObjects(jvmti, jni, obj, nextField, nextFieldName,
nextField, nextFieldName,
count, objectDescList, tag, reachable)) {
return NSK_FALSE;
}
NSK_TRACE(jni->DeleteLocalRef(obj));
return success;
}
/** Obtain all tested objects from debugee class and tag them recursively. */
static int getTestedObjects(jvmtiEnv* jvmti, JNIEnv* jni, int chainLength,
int *objectsCount, ObjectDesc* *objectDescList) {
jclass debugeeClass = NULL;
jclass rootObjectClass = NULL;
jclass chainObjectClass = NULL;
jfieldID objectField = NULL;
jfieldID reachableChainField = NULL;
jfieldID unreachableChainField = NULL;
jfieldID tailField = NULL;
jobject rootObject = NULL;
jlong rootObjectTag = 1;
jlong chainObjectTag = 100;
*objectsCount = 2 * chainLength;
NSK_DISPLAY1("Allocate memory for objects list: %d objects\n", *objectsCount);
if (!NSK_JVMTI_VERIFY(jvmti->Allocate((*objectsCount * sizeof(ObjectDesc)),
(unsigned char**)objectDescList))) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY1(" ... allocated array: 0x%p\n", (void*)objectDescList);
{
int k;
for (k = 0; k < *objectsCount; k++) {
(*objectDescList)[k].tag = 0;
(*objectDescList)[k].found = 0;
}
}
NSK_DISPLAY1("Find debugee class: %s\n", DEBUGEE_CLASS_NAME);
if (!NSK_JNI_VERIFY(jni, (debugeeClass = jni->FindClass(DEBUGEE_CLASS_NAME)) != NULL)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY1(" ... found class: 0x%p\n", (void*)debugeeClass);
NSK_DISPLAY1("Find root object class: %s\n", ROOT_OBJECT_CLASS_NAME);
if (!NSK_JNI_VERIFY(jni, (rootObjectClass = jni->FindClass(ROOT_OBJECT_CLASS_NAME)) != NULL)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY1(" ... found class: 0x%p\n", (void*)rootObjectClass);
NSK_DISPLAY1("Find chain object class: %s\n", CHAIN_OBJECT_CLASS_NAME);
if (!NSK_JNI_VERIFY(jni, (chainObjectClass =
jni->FindClass(CHAIN_OBJECT_CLASS_NAME)) != NULL)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY1(" ... found class: 0x%p\n", (void*)chainObjectClass);
NSK_DISPLAY1("Find static field in debugee class: %s\n", OBJECT_FIELD_NAME);
if (!NSK_JNI_VERIFY(jni, (objectField = jni->GetStaticFieldID(
debugeeClass, OBJECT_FIELD_NAME, ROOT_OBJECT_CLASS_SIG)) != NULL)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY1(" ... got fieldID: 0x%p\n", (void*)objectField);
NSK_DISPLAY1("Find instance field in root object class: %s\n", REACHABLE_CHAIN_FIELD_NAME);
if (!NSK_JNI_VERIFY(jni, (reachableChainField = jni->GetFieldID(
rootObjectClass, REACHABLE_CHAIN_FIELD_NAME, CHAIN_OBJECT_CLASS_SIG)) != NULL)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY1(" ... got fieldID: 0x%p\n", (void*)reachableChainField);
NSK_DISPLAY1("Find instance field in root object class: %s\n", UNREACHABLE_CHAIN_FIELD_NAME);
if (!NSK_JNI_VERIFY(jni, (unreachableChainField = jni->GetFieldID(
rootObjectClass, UNREACHABLE_CHAIN_FIELD_NAME, CHAIN_OBJECT_CLASS_SIG)) != NULL)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY1(" ... got fieldID: 0x%p\n", (void*)unreachableChainField);
NSK_DISPLAY1("Find instance field in chain object class: %s\n", TAIL_FIELD_NAME);
if (!NSK_JNI_VERIFY(jni, (tailField =
jni->GetFieldID(chainObjectClass, TAIL_FIELD_NAME, CHAIN_OBJECT_CLASS_SIG)) != NULL)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY1(" ... got fieldID: 0x%p\n", (void*)tailField);
NSK_DISPLAY1("Get root object from static field: %s\n", OBJECT_FIELD_NAME);
if (!NSK_JNI_VERIFY(jni, (rootObject =
jni->GetStaticObjectField(debugeeClass, objectField)) != NULL)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY1(" ... got object: 0x%p\n", (void*)rootObject);
NSK_DISPLAY0("Obtain and tag chain objects:\n");
NSK_DISPLAY1(" reachable objects chain: %d objects\n", chainLength);
if (!getChainObjects(jvmti, jni, rootObject,
reachableChainField, REACHABLE_CHAIN_FIELD_NAME,
tailField, TAIL_FIELD_NAME,
chainLength, *objectDescList,
chainObjectTag, NSK_TRUE)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
NSK_DISPLAY1(" unreachable objects chain: %d objects\n", chainLength);
if (!getChainObjects(jvmti, jni, rootObject,
unreachableChainField, UNREACHABLE_CHAIN_FIELD_NAME,
tailField, TAIL_FIELD_NAME,
chainLength, *objectDescList + chainLength,
chainObjectTag, NSK_FALSE)) {
nsk_jvmti_setFailStatus();
return NSK_FALSE;
}
return NSK_TRUE;
}
/** Check if tagged objects were iterated. */
static int checkTestedObjects(jvmtiEnv* jvmti, JNIEnv* jni,
int chainLength, ObjectDesc objectDescList[]) {
int success = NSK_TRUE;
int i;
NSK_DISPLAY0("Following tagged objects were iterated:\n");
NSK_DISPLAY0(" reachable objects:\n");
for (i = 0; i < chainLength; i++) {
NSK_DISPLAY2(" tag=%-5ld found=%d times\n",
(long)objectDescList[i].tag, objectDescList[i].found);
if (objectDescList[i].found <= 0) {
NSK_COMPLAIN2("Reachable object was not iterated:\n"
"# tag: %ld\n"
"# iterated: %d times\n",
(long)objectDescList[i].tag,
objectDescList[i].found);
nsk_jvmti_setFailStatus();
}
}
NSK_DISPLAY0(" unreachable objects:\n");
for (i = 0; i < chainLength; i++) {
NSK_DISPLAY2(" tag=%-5ld found=%d times\n",
(long)objectDescList[i + chainLength].tag,
objectDescList[i + chainLength].found);
if (objectDescList[i + chainLength].found > 0) {
NSK_COMPLAIN2("Unreachable object was iterated:\n"
"# tag: %ld\n"
"# iterated: %d times\n",
(long)objectDescList[i + chainLength].tag,
objectDescList[i + chainLength].found);
nsk_jvmti_setFailStatus();
}
}
return NSK_TRUE;
}
/** Release references to the tested objects and free allocated memory. */
static int releaseTestedObjects(jvmtiEnv* jvmti, JNIEnv* jni, int chainLength,
ObjectDesc* objectDescList) {
if (objectDescList != NULL) {
NSK_DISPLAY1("Deallocate objects list: 0x%p\n", (void*)objectDescList);
if (!NSK_JVMTI_VERIFY(jvmti->Deallocate((unsigned char*)objectDescList))) {
nsk_jvmti_setFailStatus();
}
}
return NSK_TRUE;
}
/* ============================================================================= */
/** heapRootCallback for heap iterator. */
jvmtiIterationControl JNICALL
heapRootCallback(jvmtiHeapRootKind root_kind,
jlong class_tag, jlong size, jlong* tag_ptr,
void* user_data) {
if (info & INFO_HEAPROOT) {
NSK_DISPLAY4(" heapRootCallback: root_kind=%2d class_tag=%-3ld size=%-3ld *tag_ptr=%-5ld\n",
(int)root_kind, (long)class_tag, (long)size,
(long)(tag_ptr == NULL ? (jlong)0 : *tag_ptr));
}
if (tag_ptr == NULL) {
NSK_COMPLAIN4("NULL tag_ptr is passed to heapRootCallback:\n"
"# tag_ptr: 0x%p\n"
"# root_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n",
(void*)tag_ptr,
(int)root_kind,
(long)class_tag,
(long)size);
nsk_jvmti_setFailStatus();
}
if (tag_ptr != NULL && *tag_ptr != 0) {
int found = 0;
int i;
for (i = 0; i < objectsCount; i++) {
if (*tag_ptr == objectDescList[i].tag) {
found++;
objectDescList[i].found++;
if (*tag_ptr < 0) {
NSK_COMPLAIN4("Unreachable tagged object passed to heapRootCallback:\n"
"# tag: %ld\n"
"# root_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n",
(long)*tag_ptr,
(int)root_kind,
(long)class_tag,
(long)size);
nsk_jvmti_setFailStatus();
}
if (*tag_ptr > 0) {
NSK_COMPLAIN4("Not root reachable tagged object passed to heapRootCallback:\n"
"# tag: %ld\n"
"# root_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n",
(long)*tag_ptr,
(int)root_kind,
(long)class_tag,
(long)size);
nsk_jvmti_setFailStatus();
}
break;
}
}
if (found <= 0) {
NSK_COMPLAIN4("Unknown tagged object passed to heapRootCallback:\n"
"# tag: %ld\n"
"# root_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n",
(long)*tag_ptr,
(int)root_kind,
(long)class_tag,
(long)size);
nsk_jvmti_setFailStatus();
}
}
if (user_data != &fakeUserData && !userDataError) {
NSK_COMPLAIN2("Unexpected user_data is passed to heapRootCallback:\n"
"# expected: 0x%p\n"
"# actual: 0x%p\n",
user_data,
&fakeUserData);
nsk_jvmti_setFailStatus();
userDataError++;
}
return JVMTI_ITERATION_CONTINUE;
}
/** stackReferenceCallback for heap iterator. */
jvmtiIterationControl JNICALL
stackReferenceCallback(jvmtiHeapRootKind root_kind,
jlong class_tag, jlong size, jlong* tag_ptr,
jlong thread_tag, jint depth, jmethodID method,
jint slot, void* user_data) {
if (info & INFO_STACKREF) {
NSK_DISPLAY8(" stackReferenceCallback: root_kind=%1d class_tag=%-3ld size=%-3ld"
" *tag_ptr=%-5ld thread_tag=%-3ld depth=%3d method=0x%p slot=%d\n",
(int)root_kind, (long)class_tag, (long)size,
(long)(tag_ptr == NULL ? (jlong)0 : *tag_ptr),
(long)thread_tag, (int)depth, (void*)method, (int)slot);
}
if (tag_ptr == NULL) {
NSK_COMPLAIN8("NULL tag_ptr is passed to stackReferenceCallback:\n"
"# tag_ptr: 0x%p\n"
"# root_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n"
"# thread_tag: %ld\n"
"# depth: %d\n"
"# method: 0x%p\n"
"# slot: %d\n",
(void*)tag_ptr,
(int)root_kind,
(long)class_tag,
(long)size,
(long)thread_tag,
(int)depth,
(void*)method,
(int)slot);
nsk_jvmti_setFailStatus();
}
if (tag_ptr != NULL && *tag_ptr != 0) {
int found = 0;
int i;
for (i = 0; i < objectsCount; i++) {
if (*tag_ptr == objectDescList[i].tag) {
found++;
objectDescList[i].found++;
if (*tag_ptr < 0) {
NSK_COMPLAIN8("Unreachable tagged object passed to stackReferenceCallback:\n"
"# tag: %ld\n"
"# root_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n"
"# thread_tag: %ld\n"
"# depth: %d\n"
"# method: 0x%p\n"
"# slot: %d\n",
(long)*tag_ptr,
(int)root_kind,
(long)class_tag,
(long)size,
(long)thread_tag,
(int)depth,
(void*)method,
(int)slot);
nsk_jvmti_setFailStatus();
}
if (*tag_ptr > 0) {
NSK_COMPLAIN8("Not stack reachable tagged object passed to stackReferenceCallback:\n"
"# tag: %ld\n"
"# root_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n"
"# thread_tag: %ld\n"
"# depth: %d\n"
"# method: 0x%p\n"
"# slot: %d\n",
(long)*tag_ptr,
(int)root_kind,
(long)class_tag,
(long)size,
(long)thread_tag,
(int)depth,
(void*)method,
(int)slot);
nsk_jvmti_setFailStatus();
}
break;
}
}
if (found <= 0) {
NSK_COMPLAIN8("Unknown tagged object passed to stackReferenceCallback:\n"
"# tag: %ld\n"
"# root_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n"
"# thread_tag: %ld\n"
"# depth: %d\n"
"# method: 0x%p\n"
"# slot: %d\n",
(long)*tag_ptr,
(int)root_kind,
(long)class_tag,
(long)size,
(long)thread_tag,
(int)depth,
(void*)method,
(int)slot);
nsk_jvmti_setFailStatus();
}
}
if (user_data != &fakeUserData && !userDataError) {
NSK_COMPLAIN2("Unexpected user_data is passed to stackReferenceCallback:\n"
"# expected: 0x%p\n"
"# actual: 0x%p\n",
user_data,
&fakeUserData);
nsk_jvmti_setFailStatus();
userDataError++;
}
return JVMTI_ITERATION_CONTINUE;
}
/** objectReferenceCallback for heap iterator. */
jvmtiIterationControl JNICALL
objectReferenceCallback(jvmtiObjectReferenceKind reference_kind,
jlong class_tag, jlong size, jlong* tag_ptr,
jlong refferrer_tag, jint refferrer_index,
void* user_data) {
if (info & INFO_OBJREF) {
NSK_DISPLAY6(" objectReferenceCallback: ref_kind=%1d class_tag=%-3ld size=%-3ld"
" *tag_ptr=%-5ld ref_tag=%-5ld ref_idx=%d\n",
(int)reference_kind, (long)class_tag, (long)size,
(long)(tag_ptr == NULL ? (jlong)0 : *tag_ptr),
(long)refferrer_tag, (int)refferrer_index);
}
if (tag_ptr == NULL) {
NSK_COMPLAIN6("NULL tag_ptr is passed to objectReferenceCallback:\n"
"# tag_ptr: 0x%p\n"
"# reference_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n"
"# refferrer_tag: %ld\n"
"# refferrer_idx: %d\n",
(void*)tag_ptr,
(int)reference_kind,
(long)class_tag,
(long)size,
(long)refferrer_tag,
(int)refferrer_index);
nsk_jvmti_setFailStatus();
}
if (tag_ptr != NULL && *tag_ptr != 0) {
int found = 0;
int i;
for (i = 0; i < objectsCount; i++) {
if (*tag_ptr == objectDescList[i].tag) {
found++;
objectDescList[i].found++;
if (*tag_ptr < 0) {
NSK_COMPLAIN6("Unreachable tagged object is passed to objectReferenceCallback:\n"
"# tag: %ld\n"
"# reference_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n"
"# refferrer_tag: %ld\n"
"# refferrer_idx: %d\n",
(long)*tag_ptr,
(int)reference_kind,
(long)class_tag,
(long)size,
(long)refferrer_tag,
(int)refferrer_index);
nsk_jvmti_setFailStatus();
}
break;
}
}
if (found <= 0) {
NSK_COMPLAIN6("Unknown tagged object is passed to ObjectReferenceCallback:\n"
"# tag: %ld\n"
"# reference_kind: %d\n"
"# class_tag: %ld\n"
"# size: %ld\n"
"# refferrer_tag: %ld\n"
"# refferrer_idx: %d\n",
(long)*tag_ptr,
(int)reference_kind,
(long)class_tag,
(long)size,
(long)refferrer_tag,
(int)refferrer_index);
nsk_jvmti_setFailStatus();
}
}
if (user_data != &fakeUserData && !userDataError) {
NSK_COMPLAIN2("Unexpected user_data is passed to ObjectReferenceCallback:\n"
"# expected: 0x%p\n"
"# actual: 0x%p\n",
user_data,
&fakeUserData);
nsk_jvmti_setFailStatus();
userDataError++;
}
if (reference_kind == JVMTI_REFERENCE_CLASS)
return JVMTI_ITERATION_IGNORE;
return JVMTI_ITERATION_CONTINUE;
}
/* ============================================================================= */
/** Agent algorithm. */
static void JNICALL
agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
NSK_DISPLAY0("Wait for tested objects created\n");
if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))
return;
{
NSK_DISPLAY0(">>> Obtain and tag tested objects from debugee class\n");
{
if (!NSK_VERIFY(getTestedObjects(jvmti, jni, chainLength, &objectsCount,
&objectDescList)))
return;
}
NSK_DISPLAY0(">>> Let debugee to clean links to unreachable objects\n");
{
if (!NSK_VERIFY(nsk_jvmti_resumeSync()))
return;
if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))
return;
}
NSK_DISPLAY0(">>> Start iteration over reachable objects\n");
{
if (!NSK_JVMTI_VERIFY(
jvmti->IterateOverReachableObjects(heapRootCallback,
stackReferenceCallback,
objectReferenceCallback,
&fakeUserData))) {
nsk_jvmti_setFailStatus();
return;
}
}
NSK_DISPLAY0(">>> Check if reachable objects were iterated:\n");
{
if (!checkTestedObjects(jvmti, jni, chainLength, objectDescList)) {
nsk_jvmti_setFailStatus();
}
}
NSK_DISPLAY0(">>> Clean used data\n");
{
if (!NSK_VERIFY(releaseTestedObjects(jvmti, jni, chainLength, objectDescList)))
return;
}
}
NSK_DISPLAY0("Let debugee to finish\n");
if (!NSK_VERIFY(nsk_jvmti_resumeSync()))
return;
}
/* ============================================================================= */
/** Agent library initialization. */
#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_iterreachobj001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_iterreachobj001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_iterreachobj001(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
jvmtiEnv* jvmti = NULL;
if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
return JNI_ERR;
timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
{
const char* infoOpt = nsk_jvmti_findOptionValue("info");
if (infoOpt != NULL) {
if (strcmp(infoOpt, "none") == 0)
info = INFO_NONE;
else if (strcmp(infoOpt, "all") == 0)
info = INFO_ALL;
else if (strcmp(infoOpt, "objref") == 0)
info = INFO_OBJREF;
else if (strcmp(infoOpt, "stackref") == 0)
info = INFO_STACKREF;
else if (strcmp(infoOpt, "heaproot") == 0)
info = INFO_HEAPROOT;
else if (strcmp(infoOpt, "heapobj") == 0)
info = INFO_HEAPOBJ;
else {
NSK_COMPLAIN1("Unknown option value: info=%s\n", infoOpt);
return JNI_ERR;
}
}
}
chainLength = nsk_jvmti_findOptionIntValue("objects", DEFAULT_CHAIN_LENGTH);
if (!NSK_VERIFY(chainLength > 0))
return JNI_ERR;
if (!NSK_VERIFY((jvmti =
nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
return JNI_ERR;
{
jvmtiCapabilities caps;
memset(&caps, 0, sizeof(caps));
caps.can_tag_objects = 1;
if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) {
return JNI_ERR;
}
}
if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
return JNI_ERR;
return JNI_OK;
}
/* ============================================================================= */
}