136 lines
4.2 KiB
C++
136 lines
4.2 KiB
C++
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdio.h>
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#include "android-base/macros.h"
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#include "jni.h"
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#include "jvmti.h"
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#include "scoped_local_ref.h"
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// Test infrastructure
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#include "jni_helper.h"
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#include "test_env.h"
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namespace art {
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namespace Test918Fields {
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extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test918_getFieldName(
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JNIEnv* env, jclass klass, jobject field) {
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jfieldID id = env->FromReflectedField(field);
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char* name;
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char* sig;
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char* gen;
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// Note: technically putting the caller class here is wrong, but we don't need it, anyways.
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jvmtiError result = jvmti_env->GetFieldName(klass, id, &name, &sig, &gen);
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if (result != JVMTI_ERROR_NONE) {
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char* err;
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jvmti_env->GetErrorName(result, &err);
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printf("Failure running GetFieldName: %s\n", err);
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err));
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return nullptr;
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}
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auto callback = [&](jint i) {
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if (i == 0) {
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return name == nullptr ? nullptr : env->NewStringUTF(name);
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} else if (i == 1) {
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return sig == nullptr ? nullptr : env->NewStringUTF(sig);
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} else {
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return gen == nullptr ? nullptr : env->NewStringUTF(gen);
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}
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};
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jobjectArray ret = CreateObjectArray(env, 3, "java/lang/String", callback);
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// Need to deallocate the strings.
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if (name != nullptr) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(name));
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}
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if (sig != nullptr) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(sig));
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}
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if (gen != nullptr) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(gen));
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}
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// Also run GetMethodName with all parameter pointers null to check for segfaults.
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jvmtiError result2 = jvmti_env->GetFieldName(klass, id, nullptr, nullptr, nullptr);
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if (result2 != JVMTI_ERROR_NONE) {
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char* err;
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jvmti_env->GetErrorName(result2, &err);
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printf("Failure running GetFieldName(null, null, null): %s\n", err);
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err));
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return nullptr;
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}
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return ret;
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}
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extern "C" JNIEXPORT jclass JNICALL Java_art_Test918_getFieldDeclaringClass(
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JNIEnv* env, jclass klass, jobject field) {
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jfieldID id = env->FromReflectedField(field);
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jclass declaring_class;
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jvmtiError result = jvmti_env->GetFieldDeclaringClass(klass, id, &declaring_class);
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if (result != JVMTI_ERROR_NONE) {
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char* err;
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jvmti_env->GetErrorName(result, &err);
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printf("Failure running GetFieldDeclaringClass: %s\n", err);
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err));
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return nullptr;
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}
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return declaring_class;
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}
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extern "C" JNIEXPORT jint JNICALL Java_art_Test918_getFieldModifiers(
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JNIEnv* env, jclass klass, jobject field) {
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jfieldID id = env->FromReflectedField(field);
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jint modifiers;
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jvmtiError result = jvmti_env->GetFieldModifiers(klass, id, &modifiers);
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if (result != JVMTI_ERROR_NONE) {
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char* err;
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jvmti_env->GetErrorName(result, &err);
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printf("Failure running GetFieldModifiers: %s\n", err);
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err));
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return 0;
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}
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return modifiers;
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}
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extern "C" JNIEXPORT jboolean JNICALL Java_art_Test918_isFieldSynthetic(
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JNIEnv* env, jclass klass, jobject field) {
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jfieldID id = env->FromReflectedField(field);
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jboolean synth;
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jvmtiError result = jvmti_env->IsFieldSynthetic(klass, id, &synth);
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if (result != JVMTI_ERROR_NONE) {
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char* err;
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jvmti_env->GetErrorName(result, &err);
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printf("Failure running IsFieldSynthetic: %s\n", err);
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err));
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return 0;
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}
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return synth;
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}
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} // namespace Test918Fields
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} // namespace art
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