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/*
* Copyright (C) 2019 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 <cstdio>
#include <memory>
#include <mutex>
#include <string>
#include <vector>
#include "android-base/logging.h"
#include "android-base/macros.h"
#include "android-base/stringprintf.h"
#include "jni.h"
#include "jvmti.h"
#include "scoped_local_ref.h"
#include "scoped_utf_chars.h"
// Test infrastructure
#include "jni_helper.h"
#include "jvmti_helper.h"
#include "test_env.h"
#include "ti_macros.h"
namespace art {
namespace Test1974ResizeArray {
using ChangeArraySize = jvmtiError (*)(jvmtiEnv* env, jobject arr, jint size);
template <typename T> static void Dealloc(T* t) {
jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(t));
}
template <typename T, typename... Rest> static void Dealloc(T* t, Rest... rs) {
Dealloc(t);
Dealloc(rs...);
}
static void DeallocParams(jvmtiParamInfo* params, jint n_params) {
for (jint i = 0; i < n_params; i++) {
Dealloc(params[i].name);
}
}
static jint FindExtensionEvent(JNIEnv* env, const std::string& name) {
jint n_ext;
jvmtiExtensionEventInfo* infos;
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetExtensionEvents(&n_ext, &infos))) {
return -1;
}
jint res = -1;
bool found = false;
for (jint i = 0; i < n_ext; i++) {
jvmtiExtensionEventInfo* cur_info = &infos[i];
if (strcmp(name.c_str(), cur_info->id) == 0) {
res = cur_info->extension_event_index;
found = true;
}
// Cleanup the cur_info
DeallocParams(cur_info->params, cur_info->param_count);
Dealloc(cur_info->id, cur_info->short_description, cur_info->params);
}
// Cleanup the array.
Dealloc(infos);
if (!found) {
ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
env->ThrowNew(rt_exception.get(), (name + " extensions not found").c_str());
return -1;
}
return res;
}
static jvmtiExtensionFunction FindExtensionMethod(JNIEnv* env, const std::string& name) {
jint n_ext;
jvmtiExtensionFunctionInfo* infos;
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetExtensionFunctions(&n_ext, &infos))) {
return nullptr;
}
jvmtiExtensionFunction res = nullptr;
for (jint i = 0; i < n_ext; i++) {
jvmtiExtensionFunctionInfo* cur_info = &infos[i];
if (strcmp(name.c_str(), cur_info->id) == 0) {
res = cur_info->func;
}
// Cleanup the cur_info
DeallocParams(cur_info->params, cur_info->param_count);
Dealloc(cur_info->id, cur_info->short_description, cur_info->params, cur_info->errors);
}
// Cleanup the array.
Dealloc(infos);
if (res == nullptr) {
ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
env->ThrowNew(rt_exception.get(), (name + " extensions not found").c_str());
return nullptr;
}
return res;
}
extern "C" JNIEXPORT void JNICALL Java_art_Test1974_ResizeArray(JNIEnv* env,
jclass klass ATTRIBUTE_UNUSED,
jobject ref_gen,
jint new_size) {
ChangeArraySize change_array_size = reinterpret_cast<ChangeArraySize>(
FindExtensionMethod(env, "com.android.art.heap.change_array_size"));
if (change_array_size == nullptr) {
return;
}
jmethodID getArr = env->GetMethodID(
env->FindClass("java/util/function/Supplier"), "get", "()Ljava/lang/Object;");
jobject arr = env->CallObjectMethod(ref_gen, getArr);
JvmtiErrorToException(env, jvmti_env, change_array_size(jvmti_env, arr, new_size));
}
extern "C" JNIEXPORT jobject JNICALL Java_art_Test1974_ReadJniRef(JNIEnv* env,
jclass klass ATTRIBUTE_UNUSED,
jlong r) {
return env->NewLocalRef(reinterpret_cast<jobject>(static_cast<intptr_t>(r)));
}
extern "C" JNIEXPORT jlong JNICALL
Java_art_Test1974_GetWeakGlobalJniRef(JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jobject r) {
return static_cast<jlong>(reinterpret_cast<intptr_t>(env->NewWeakGlobalRef(r)));
}
extern "C" JNIEXPORT jlong JNICALL Java_art_Test1974_GetGlobalJniRef(JNIEnv* env,
jclass klass ATTRIBUTE_UNUSED,
jobject r) {
return static_cast<jlong>(reinterpret_cast<intptr_t>(env->NewGlobalRef(r)));
}
extern "C" JNIEXPORT jobjectArray JNICALL
Java_art_Test1974_GetObjectsWithTag(JNIEnv* env, jclass klass ATTRIBUTE_UNUSED, jlong tag) {
jsize cnt = 0;
jobject* res = nullptr;
if (JvmtiErrorToException(
env, jvmti_env, jvmti_env->GetObjectsWithTags(1, &tag, &cnt, &res, nullptr))) {
return nullptr;
}
jobjectArray ret = env->NewObjectArray(cnt, env->FindClass("java/lang/Object"), nullptr);
if (ret == nullptr) {
return nullptr;
}
for (jsize i = 0; i < cnt; i++) {
env->SetObjectArrayElement(ret, i, res[i]);
}
jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(res));
return ret;
}
extern "C" JNIEXPORT void JNICALL Java_art_Test1974_runNativeTest(JNIEnv* env,
jclass klass ATTRIBUTE_UNUSED,
jobjectArray arr,
jobject resize,
jobject print,
jobject check) {
jmethodID run = env->GetMethodID(env->FindClass("java/lang/Runnable"), "run", "()V");
jmethodID accept = env->GetMethodID(
env->FindClass("java/util/function/Consumer"), "accept", "(Ljava/lang/Object;)V");
env->CallVoidMethod(print, accept, arr);
env->CallVoidMethod(resize, run);
env->CallVoidMethod(print, accept, arr);
env->CallVoidMethod(check, accept, arr);
}
struct JvmtiInfo {
std::mutex mu_;
std::vector<jlong> freed_tags_;
};
extern "C" JNIEXPORT void JNICALL Java_art_Test1974_StartCollectFrees(JNIEnv* env,
jclass k ATTRIBUTE_UNUSED) {
jvmtiEventCallbacks cb{
.ObjectFree =
[](jvmtiEnv* jvmti, jlong tag) {
JvmtiInfo* dat = nullptr;
CHECK_EQ(jvmti->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&dat)),
JVMTI_ERROR_NONE);
std::lock_guard<std::mutex> mu(dat->mu_);
dat->freed_tags_.push_back(tag);
},
};
JvmtiInfo* info = new JvmtiInfo;
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->SetEnvironmentLocalStorage(info))) {
LOG(INFO) << "couldn't set env-local storage";
return;
}
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->SetEventCallbacks(&cb, sizeof(cb)))) {
LOG(INFO) << "couldn't set event callback";
return;
}
JvmtiErrorToException(
env,
jvmti_env,
jvmti_env->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_OBJECT_FREE, nullptr));
}
extern "C" JNIEXPORT void JNICALL
Java_art_Test1974_StartAssignObsoleteIncrementedId(JNIEnv* env, jclass k ATTRIBUTE_UNUSED) {
jint id = FindExtensionEvent(env, "com.android.art.heap.obsolete_object_created");
if (env->ExceptionCheck()) {
LOG(INFO) << "Could not find extension event!";
return;
}
using ObsoleteEvent = void (*)(jvmtiEnv * env, jlong * obsolete, jlong * non_obsolete);
ObsoleteEvent oe = [](jvmtiEnv* env ATTRIBUTE_UNUSED, jlong* obsolete, jlong* non_obsolete) {
*non_obsolete = *obsolete;
*obsolete = *obsolete + 1;
};
JvmtiErrorToException(
env,
jvmti_env,
jvmti_env->SetExtensionEventCallback(id, reinterpret_cast<jvmtiExtensionEvent>(oe)));
}
extern "C" JNIEXPORT void JNICALL
Java_art_Test1974_EndAssignObsoleteIncrementedId(JNIEnv* env, jclass k ATTRIBUTE_UNUSED) {
jint id = FindExtensionEvent(env, "com.android.art.heap.obsolete_object_created");
if (env->ExceptionCheck()) {
LOG(INFO) << "Could not find extension event!";
return;
}
JvmtiErrorToException(env, jvmti_env, jvmti_env->SetExtensionEventCallback(id, nullptr));
}
extern "C" JNIEXPORT jlongArray JNICALL
Java_art_Test1974_CollectFreedTags(JNIEnv* env, jclass k ATTRIBUTE_UNUSED) {
if (JvmtiErrorToException(
env,
jvmti_env,
jvmti_env->SetEventNotificationMode(JVMTI_DISABLE, JVMTI_EVENT_OBJECT_FREE, nullptr))) {
return nullptr;
}
JvmtiInfo* info_p = nullptr;
if (JvmtiErrorToException(
env,
jvmti_env,
jvmti_env->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&info_p)))) {
return nullptr;
}
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->SetEnvironmentLocalStorage(nullptr))) {
return nullptr;
}
std::unique_ptr<JvmtiInfo> info(info_p);
ScopedLocalRef<jlongArray> arr(env, env->NewLongArray(info->freed_tags_.size()));
if (env->ExceptionCheck()) {
return nullptr;
}
env->SetLongArrayRegion(arr.get(), 0, info->freed_tags_.size(), info->freed_tags_.data());
if (env->ExceptionCheck()) {
return nullptr;
}
return arr.release();
}
} // namespace Test1974ResizeArray
} // namespace art
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