91 lines
3.0 KiB
C++
91 lines
3.0 KiB
C++
/*
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* Copyright (C) 2019 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 <atomic>
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#include "jvmti.h"
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// Test infrastructure
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#include "jvmti_helper.h"
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#include "scoped_local_ref.h"
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#include "test_env.h"
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namespace art {
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namespace Test1964AddToDexClassLoader {
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using AddToDexClassLoader = jvmtiError (*)(jvmtiEnv* env,
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jobject loader,
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const char* segment);
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template <typename T> static void Dealloc(T* t) {
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(t));
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}
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template <typename T, typename... Rest> static void Dealloc(T* t, Rest... rs) {
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Dealloc(t);
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Dealloc(rs...);
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}
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static void DeallocParams(jvmtiParamInfo* params, jint n_params) {
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for (jint i = 0; i < n_params; i++) {
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Dealloc(params[i].name);
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}
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}
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AddToDexClassLoader GetAddFunction(JNIEnv* env) {
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// Get the extensions.
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jint n_ext = 0;
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jvmtiExtensionFunctionInfo* infos = nullptr;
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if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetExtensionFunctions(&n_ext, &infos))) {
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return nullptr;
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}
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AddToDexClassLoader result = nullptr;
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for (jint i = 0; i < n_ext; i++) {
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jvmtiExtensionFunctionInfo* cur_info = &infos[i];
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if (strcmp("com.android.art.classloader.add_to_dex_class_loader", cur_info->id) ==
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0) {
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result = reinterpret_cast<AddToDexClassLoader>(cur_info->func);
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}
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// Cleanup the cur_info
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DeallocParams(cur_info->params, cur_info->param_count);
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Dealloc(cur_info->id, cur_info->short_description, cur_info->params, cur_info->errors);
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}
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// Cleanup the array.
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Dealloc(infos);
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return result;
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}
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extern "C" JNIEXPORT void JNICALL Java_Main_addToClassLoaderNative(JNIEnv* env,
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jclass,
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jobject loader,
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jstring segment) {
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AddToDexClassLoader add_func = GetAddFunction(env);
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if (add_func == nullptr) {
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env->ThrowNew(env->FindClass("java/lang/RuntimeError"), "Failed to find extension function");
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return;
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}
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const char* chars = env->GetStringUTFChars(segment, nullptr);
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JvmtiErrorToException(
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env,
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jvmti_env,
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add_func(jvmti_env,
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loader,
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chars));
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env->ReleaseStringUTFChars(segment, chars);
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}
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} // namespace Test1964AddToDexClassLoader
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} // namespace art
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