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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 <queue>
#include <vector>
#include "jvmti.h"
// Test infrastructure
#include "jvmti_helper.h"
#include "nativehelper/scoped_local_ref.h"
#include "nativehelper/scoped_primitive_array.h"
#include "test_env.h"
namespace art {
namespace Test1940DdmExt {
using DdmHandleChunk = jvmtiError(*)(jvmtiEnv* env,
jint type_in,
jint len_in,
const jbyte* data_in,
jint* type_out,
jint* len_data_out,
jbyte** data_out);
struct DdmCallbackData {
public:
DdmCallbackData(jint type, jint size, jbyte* data) : type_(type), data_(data, data + size) {}
jint type_;
std::vector<jbyte> data_;
};
struct DdmsTrackingData {
DdmHandleChunk send_ddm_chunk;
jrawMonitorID callback_mon;
std::queue<DdmCallbackData> callbacks_received;
};
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...);
}
extern "C" JNIEXPORT jobject JNICALL Java_art_Test1940_processChunk(JNIEnv* env,
jclass,
jobject chunk) {
DdmsTrackingData* data = nullptr;
if (JvmtiErrorToException(
env, jvmti_env, jvmti_env->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&data)))) {
return nullptr;
}
CHECK(chunk != nullptr);
CHECK(data != nullptr);
CHECK(data->send_ddm_chunk != nullptr);
ScopedLocalRef<jclass> chunk_class(env, env->FindClass("org/apache/harmony/dalvik/ddmc/Chunk"));
if (env->ExceptionCheck()) {
return nullptr;
}
jfieldID type_field_id = env->GetFieldID(chunk_class.get(), "type", "I");
jfieldID offset_field_id = env->GetFieldID(chunk_class.get(), "offset", "I");
jfieldID length_field_id = env->GetFieldID(chunk_class.get(), "length", "I");
jfieldID data_field_id = env->GetFieldID(chunk_class.get(), "data", "[B");
jint type = env->GetIntField(chunk, type_field_id);
jint off = env->GetIntField(chunk, offset_field_id);
jint len = env->GetIntField(chunk, length_field_id);
ScopedLocalRef<jbyteArray> chunk_buf(
env, reinterpret_cast<jbyteArray>(env->GetObjectField(chunk, data_field_id)));
if (env->ExceptionCheck()) {
return nullptr;
}
ScopedByteArrayRO byte_data(env, chunk_buf.get());
jint out_type;
jint out_size;
jbyte* out_data;
if (JvmtiErrorToException(env, jvmti_env, data->send_ddm_chunk(jvmti_env,
type,
len,
&byte_data[off],
/*out*/&out_type,
/*out*/&out_size,
/*out*/&out_data))) {
return nullptr;
} else {
ScopedLocalRef<jbyteArray> chunk_data(env, env->NewByteArray(out_size));
env->SetByteArrayRegion(chunk_data.get(), 0, out_size, out_data);
Dealloc(out_data);
ScopedLocalRef<jobject> res(env, env->NewObject(chunk_class.get(),
env->GetMethodID(chunk_class.get(),
"<init>",
"(I[BII)V"),
out_type,
chunk_data.get(),
0,
out_size));
return res.release();
}
}
static void DeallocParams(jvmtiParamInfo* params, jint n_params) {
for (jint i = 0; i < n_params; i++) {
Dealloc(params[i].name);
}
}
extern "C" JNIEXPORT void JNICALL Java_art_Test1940_publishListen(JNIEnv* env,
jclass test_klass,
jobject publish) {
jmethodID publish_method = env->FromReflectedMethod(publish);
DdmsTrackingData* data = nullptr;
if (JvmtiErrorToException(
env, jvmti_env, jvmti_env->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&data)))) {
return;
}
std::vector<DdmCallbackData> callbacks;
while (true) {
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->RawMonitorEnter(data->callback_mon))) {
return;
}
while (data->callbacks_received.empty()) {
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->RawMonitorWait(data->callback_mon, 0))) {
CHECK_EQ(JVMTI_ERROR_NONE, jvmti_env->RawMonitorExit(data->callback_mon));
return;
}
}
while (!data->callbacks_received.empty()) {
callbacks.emplace_back(std::move(data->callbacks_received.front()));
data->callbacks_received.pop();
}
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->RawMonitorExit(data->callback_mon))) {
return;
}
for (auto cb : callbacks) {
ScopedLocalRef<jbyteArray> res(env, env->NewByteArray(cb.data_.size()));
env->SetByteArrayRegion(res.get(), 0, cb.data_.size(), cb.data_.data());
env->CallStaticVoidMethod(test_klass, publish_method, cb.type_, res.get());
}
callbacks.clear();
}
}
static void JNICALL PublishCB(jvmtiEnv* jvmti, jint type, jint size, jbyte* bytes) {
DdmsTrackingData* data = nullptr;
CHECK_EQ(JVMTI_ERROR_NONE, jvmti->GetEnvironmentLocalStorage(reinterpret_cast<void**>(&data)));
CHECK_EQ(JVMTI_ERROR_NONE, jvmti->RawMonitorEnter(data->callback_mon));
data->callbacks_received.emplace(type, size, bytes);
CHECK_EQ(JVMTI_ERROR_NONE, jvmti->RawMonitorNotifyAll(data->callback_mon));
CHECK_EQ(JVMTI_ERROR_NONE, jvmti->RawMonitorExit(data->callback_mon));
}
extern "C" JNIEXPORT void JNICALL Java_art_Test1940_initializeTest(JNIEnv* env, jclass) {
void* old_data = nullptr;
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetEnvironmentLocalStorage(&old_data))) {
return;
} else if (old_data != nullptr) {
ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
env->ThrowNew(rt_exception.get(), "Environment already has local storage set!");
return;
}
void* mem = nullptr;
if (JvmtiErrorToException(env,
jvmti_env,
jvmti_env->Allocate(sizeof(DdmsTrackingData),
reinterpret_cast<unsigned char**>(&mem)))) {
return;
}
DdmsTrackingData* data = new (mem) DdmsTrackingData{};
if (JvmtiErrorToException(
env, jvmti_env, jvmti_env->CreateRawMonitor("callback-mon", &data->callback_mon))) {
return;
}
// Get the extensions.
jint n_ext = 0;
jvmtiExtensionFunctionInfo* infos = nullptr;
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetExtensionFunctions(&n_ext, &infos))) {
return;
}
for (jint i = 0; i < n_ext; i++) {
jvmtiExtensionFunctionInfo* cur_info = &infos[i];
if (strcmp("com.android.art.internal.ddm.process_chunk", cur_info->id) == 0) {
data->send_ddm_chunk = reinterpret_cast<DdmHandleChunk>(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 (data->send_ddm_chunk == nullptr) {
ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
env->ThrowNew(rt_exception.get(), "Unable to find memory tracking extensions.");
return;
}
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->SetEnvironmentLocalStorage(data))) {
return;
}
jint event_index = -1;
bool found_event = false;
jvmtiExtensionEventInfo* events = nullptr;
if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetExtensionEvents(&n_ext, &events))) {
return;
}
for (jint i = 0; i < n_ext; i++) {
jvmtiExtensionEventInfo* cur_info = &events[i];
if (strcmp("com.android.art.internal.ddm.publish_chunk_safe", cur_info->id) == 0) {
found_event = true;
event_index = cur_info->extension_event_index;
}
// 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(events);
if (!found_event) {
ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
env->ThrowNew(rt_exception.get(), "Unable to find ddms extension event.");
return;
}
JvmtiErrorToException(env,
jvmti_env,
jvmti_env->SetExtensionEventCallback(
event_index, reinterpret_cast<jvmtiExtensionEvent>(PublishCB)));
return;
}
} // namespace Test1940DdmExt
} // namespace art
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