144 lines
4.6 KiB
C++
144 lines
4.6 KiB
C++
/*
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* Copyright (c) 2003, 2024, 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.hpp"
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#include "JVMTITools.hpp"
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extern "C" {
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#define PASSED 0
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#define STATUS_FAILED 2
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static jvmtiEnv *jvmti = nullptr;
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static jint result = PASSED;
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// compares 'value' with jobject_arr[index]
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static bool equals_str(JNIEnv *env, const char *value, jobjectArray jobject_arr, jint index) {
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jstring jstr = (jstring)env->GetObjectArrayElement(jobject_arr, index);
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const char* utf = env->GetStringUTFChars(jstr, nullptr);
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bool res = false;
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if (utf != nullptr) {
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res = strcmp(value, utf) == 0;
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env->ReleaseStringUTFChars(jstr, utf);
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} else {
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printf("GetStringUTFChars failed\n");
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result = STATUS_FAILED;
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}
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env->DeleteLocalRef(jstr);
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return res;
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}
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_getclfld007(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNICALL Agent_OnAttach_getclfld007(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNI_OnLoad_getclfld007(JavaVM *jvm, char *options, void *reserved) {
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return JNI_VERSION_1_8;
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}
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#endif
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jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
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jint res;
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res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
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if (res != JNI_OK || jvmti == nullptr) {
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printf("Wrong result of a valid call to GetEnv!\n");
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return JNI_ERR;
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}
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return JNI_OK;
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}
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JNIEXPORT void JNICALL
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Java_nsk_jvmti_GetClassFields_getclfld007_check(JNIEnv *env, jclass cls, jclass clazz, jobjectArray fieldArr) {
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jvmtiError err;
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jint fcount;
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jfieldID *fields;
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char *name, *sig;
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int j;
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if (jvmti == nullptr) {
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printf("JVMTI client was not properly loaded!\n");
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fflush(nullptr);
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result = STATUS_FAILED;
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return;
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}
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// fieldArr contains 2 elements for each field
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jint field_count = env->GetArrayLength(fieldArr) / 2;
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err = jvmti->GetClassFields(clazz, &fcount, &fields);
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if (err != JVMTI_ERROR_NONE) {
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printf("GetClassFields unexpected error: %s (%d)\n",
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TranslateError(err), err);
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fflush(nullptr);
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result = STATUS_FAILED;
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return;
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}
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if (fcount != field_count) {
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printf("wrong number of fields: %d, expected: %d\n",
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fcount, field_count);
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result = STATUS_FAILED;
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}
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for (j = 0; j < fcount; j++) {
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if (fields[j] == nullptr) {
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printf("(%d) fieldID = null\n", j);
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result = STATUS_FAILED;
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continue;
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}
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err = jvmti->GetFieldName(clazz, fields[j], &name, &sig, nullptr);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetFieldName#%d) unexpected error: %s (%d)\n",
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j, TranslateError(err), err);
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result = STATUS_FAILED;
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continue;
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}
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printf(">>> [%d]: %s, sig = \"%s\"\n", j, name, sig);
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if ((j < field_count) &&
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(name == nullptr || sig == nullptr ||
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!equals_str(env, name, fieldArr, j * 2) ||
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!equals_str(env, sig, fieldArr, j * 2 + 1))) {
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printf("(%d) wrong field: \"%s%s\"", j, name, sig);
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result = STATUS_FAILED;
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}
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jvmti->Deallocate((unsigned char *)name);
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jvmti->Deallocate((unsigned char *)sig);
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}
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fflush(nullptr);
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}
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JNIEXPORT int JNICALL
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Java_nsk_jvmti_GetClassFields_getclfld007_getRes(JNIEnv *env, jclass cls) {
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return result;
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}
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}
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