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/*
* Copyright (c) 2003, 2024, 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.hpp"
#include "jni_tools.hpp"
#include "jvmti_tools.hpp"
extern "C" {
/* ============================================================================= */
static jlong timeout = 0;
#define DEBUGEE_CLASS_NAME "nsk/jvmti/GetObjectSize/objsize001"
#define OBJECT_CLASS_NAME "nsk/jvmti/GetObjectSize/objsize001TestedClass"
#define OBJECT_CLASS_SIG "L" OBJECT_CLASS_NAME ";"
#define OBJECT_FIELD_NAME "testedObject"
/* ============================================================================= */
/** Agent algorithm. */
static void JNICALL
agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
NSK_DISPLAY0("Wait for object created\n");
if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))
return;
{
jobject testedObject = nullptr;
jlong objectSize = 0;
NSK_DISPLAY0(">>> Obtain tested object from a static field of debugee class\n");
{
jclass debugeeClass = nullptr;
jfieldID objectField = nullptr;
NSK_DISPLAY1("Find debugee class: %s\n", DEBUGEE_CLASS_NAME);
if (!NSK_JNI_VERIFY(jni, (debugeeClass = jni->FindClass(DEBUGEE_CLASS_NAME)) != nullptr)) {
nsk_jvmti_setFailStatus();
return;
}
NSK_DISPLAY1(" ... found class: 0x%p\n", (void*)debugeeClass);
NSK_DISPLAY1("Find static field: %s\n", OBJECT_FIELD_NAME);
if (!NSK_JNI_VERIFY(jni, (objectField =
jni->GetStaticFieldID(debugeeClass, OBJECT_FIELD_NAME, OBJECT_CLASS_SIG)) != nullptr)) {
nsk_jvmti_setFailStatus();
return;
}
NSK_DISPLAY1(" ... got fieldID: 0x%p\n", (void*)objectField);
NSK_DISPLAY1("Get object from static field: %s\n", OBJECT_FIELD_NAME);
if (!NSK_JNI_VERIFY(jni, (testedObject =
jni->GetStaticObjectField(debugeeClass, objectField)) != nullptr)) {
nsk_jvmti_setFailStatus();
return;
}
NSK_DISPLAY1(" ... got object: 0x%p\n", (void*)testedObject);
NSK_DISPLAY1("Create global reference for object: 0x%p\n", (void*)testedObject);
if (!NSK_JNI_VERIFY(jni, (testedObject = jni->NewGlobalRef(testedObject)) != nullptr)) {
nsk_jvmti_setFailStatus();
return;
}
NSK_DISPLAY1(" ... got reference: 0x%p\n", (void*)testedObject);
}
NSK_DISPLAY0(">>> Testcase #1: get initial size of the object\n");
{
NSK_DISPLAY1("Get size for object: 0x%p\n", (void*)testedObject);
if (!NSK_JVMTI_VERIFY(jvmti->GetObjectSize(testedObject, &objectSize))) {
nsk_jvmti_setFailStatus();
return;
}
NSK_DISPLAY1(" ... got object size: %ld bytes\n", (long)objectSize);
if (objectSize <= 0) {
NSK_COMPLAIN1("GetObjectSize() returned unexpected size of object: %ld bytes\n",
(long)objectSize);
nsk_jvmti_setFailStatus();
}
}
NSK_DISPLAY0(">>> Testcase #2: get size of not changed object and compare with initial\n");
{
jlong size = 0;
NSK_DISPLAY1("Get size for object: 0x%p\n", (void*)testedObject);
if (!NSK_JVMTI_VERIFY(jvmti->GetObjectSize(testedObject, &size))) {
nsk_jvmti_setFailStatus();
return;
}
NSK_DISPLAY1(" ... got object size: %ld\n bytes", (long)size);
if (size != objectSize) {
NSK_DISPLAY2("# WARNING: Other call to GetObjectSize for not changed object returns different size:\n"
"# got object size: %ld\n"
"# initial size: %ld\n",
(long)size, (long)objectSize);
} else {
NSK_DISPLAY2("SUCCESS: Got object size is equal to initial: %ld = %ld\n",
(long)size, (long)objectSize);
}
}
NSK_DISPLAY0(">>> Testcase #3: get size of changed object and compare with initial\n");
{
jlong size = 0;
NSK_DISPLAY0("Let debugee to change object data\n");
if (!NSK_VERIFY(nsk_jvmti_resumeSync()))
return;
if (!NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))
return;
NSK_DISPLAY1("Get size for object: 0x%p\n", (void*)testedObject);
if (!NSK_JVMTI_VERIFY(jvmti->GetObjectSize(testedObject, &size))) {
nsk_jvmti_setFailStatus();
return;
}
NSK_DISPLAY1(" ... got object size: %ld\n", (long)size);
if (size != objectSize) {
NSK_COMPLAIN2("# WARNING: Other call to GetObjectSize for changed object returns different size:\n"
"# got object size: %ld\n"
"# initial size: %ld\n",
(long)size, (long)objectSize);
} else {
NSK_DISPLAY2("SUCCESS: Got object size is equal to initial: %ld = %ld\n",
(long)size, (long)objectSize);
}
}
NSK_DISPLAY0(">>> Clean used data\n");
{
NSK_DISPLAY1("Delete object reference: 0x%p\n", (void*)testedObject);
NSK_TRACE(jni->DeleteGlobalRef(testedObject));
}
}
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_objsize001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_objsize001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_objsize001(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
jvmtiEnv* jvmti = nullptr;
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)) != nullptr))
return JNI_ERR;
if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, nullptr)))
return JNI_ERR;
return JNI_OK;
}
/* ============================================================================= */
}
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