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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 <stdio.h>
#include <string.h>
#include "jvmti.h"
#include "agent_common.hpp"
#include "JVMTITools.hpp"
extern "C" {
#define PASSED 0
#define STATUS_FAILED 2
static jvmtiEnv *jvmti = nullptr;
static jint result = PASSED;
static jboolean printdump = JNI_FALSE;
static const char* fields[] = { "const1", "fld", "xx" };
#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_getfldecl002(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_getfldecl002(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_getfldecl002(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
jint res;
if (options != nullptr && strcmp(options, "printdump") == 0) {
printdump = JNI_TRUE;
}
res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
if (res != JNI_OK || jvmti == nullptr) {
printf("Wrong result of a valid call to GetEnv!\n");
return JNI_ERR;
}
return JNI_OK;
}
JNIEXPORT void JNICALL
Java_nsk_jvmti_GetFieldDeclaringClass_getfldecl002_check(JNIEnv *env,
jclass cls, jint i, jclass cls1, jclass cls2) {
jvmtiError err;
jfieldID fid;
jclass declaringClass;
char *sig, *generic;
if (jvmti == nullptr) {
printf("JVMTI client was not properly loaded!\n");
result = STATUS_FAILED;
return;
}
if (i == 0) {
fid = env->GetStaticFieldID(cls1, fields[i], "I");
} else {
fid = env->GetFieldID(cls1, fields[i], "I");
}
if (fid == nullptr) {
printf("(%d) cannot get field ID for %s:\"I\"\n", i, fields[i]);
result = STATUS_FAILED;
return;
}
err = jvmti->GetFieldDeclaringClass(cls1, fid, &declaringClass);
if (err != JVMTI_ERROR_NONE) {
printf("(GetFieldDeclaringClass#%d) unexpected error: %s (%d)\n",
i, TranslateError(err), err);
result = STATUS_FAILED;
return;
}
err = jvmti->GetClassSignature(declaringClass, &sig, &generic);
if (err != JVMTI_ERROR_NONE) {
printf("(GetClassSignature#%d) unexpected error: %s (%d)\n",
i, TranslateError(err), err);
result = STATUS_FAILED;
return;
}
if (printdump == JNI_TRUE) {
printf(">>> %d -- %s: \"%s\"\n", i, fields[i], sig);
}
if (env->IsSameObject(cls2, declaringClass) != JNI_TRUE) {
printf("(%d) unexpected declaringClass: %s\n", i, sig);
result = STATUS_FAILED;
}
}
JNIEXPORT jint JNICALL Java_nsk_jvmti_GetFieldDeclaringClass_getfldecl002_getResult(JNIEnv *env, jclass cls) {
return result;
}
}
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