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