/*
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* Copyright (C) 2017 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/logging.h"
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#include "android-base/stringprintf.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 "jvmti_helper.h"
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#include "test_env.h"
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#include "ti_macros.h"
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namespace art {
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namespace Test925ThreadGroups {
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// private static native Object[] getThreadGroupInfo();
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// // Returns an array where element 0 is an array of threads and element 1 is an array of groups.
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// private static native Object[] getThreadGroupChildren();
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extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test925_getTopThreadGroups(
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JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED) {
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jthreadGroup* groups;
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jint group_count;
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jvmtiError result = jvmti_env->GetTopThreadGroups(&group_count, &groups);
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if (JvmtiErrorToException(env, jvmti_env, result)) {
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return nullptr;
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}
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auto callback = [&](jint index) -> jobject {
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return groups[index];
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};
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jobjectArray ret = CreateObjectArray(env, group_count, "java/lang/ThreadGroup", callback);
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(groups));
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return ret;
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}
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extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test925_getThreadGroupInfo(
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JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthreadGroup group) {
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jvmtiThreadGroupInfo info;
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jvmtiError result = jvmti_env->GetThreadGroupInfo(group, &info);
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if (JvmtiErrorToException(env, jvmti_env, result)) {
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return nullptr;
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}
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auto callback = [&](jint index) -> jobject {
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switch (index) {
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// The parent.
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case 0:
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return info.parent;
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// The name.
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case 1:
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return (info.name == nullptr) ? nullptr : env->NewStringUTF(info.name);
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// The priority. Use a string for simplicity of construction.
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case 2:
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return env->NewStringUTF(android::base::StringPrintf("%d", info.max_priority).c_str());
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// Whether it's a daemon. Use a string for simplicity of construction.
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case 3:
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return env->NewStringUTF(info.is_daemon == JNI_TRUE ? "true" : "false");
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}
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LOG(FATAL) << "Should not reach here";
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UNREACHABLE();
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};
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return CreateObjectArray(env, 4, "java/lang/Object", callback);
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}
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extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test925_getThreadGroupChildren(
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JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthreadGroup group) {
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jint thread_count;
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jthread* threads;
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jint threadgroup_count;
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jthreadGroup* groups;
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jvmtiError result = jvmti_env->GetThreadGroupChildren(group,
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&thread_count,
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&threads,
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&threadgroup_count,
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&groups);
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if (JvmtiErrorToException(env, jvmti_env, result)) {
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return nullptr;
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}
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auto callback = [&](jint component_index) -> jobject {
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if (component_index == 0) {
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// Threads.
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auto inner_callback = [&](jint index) {
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return threads[index];
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};
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return CreateObjectArray(env, thread_count, "java/lang/Thread", inner_callback);
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} else {
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// Groups.
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auto inner_callback = [&](jint index) {
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return groups[index];
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};
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return CreateObjectArray(env, threadgroup_count, "java/lang/ThreadGroup", inner_callback);
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}
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};
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jobjectArray ret = CreateObjectArray(env, 2, "java/lang/Object", callback);
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(threads));
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jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(groups));
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return ret;
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}
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} // namespace Test925ThreadGroups
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} // namespace art
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