upload android base code part3

android/art/test/925-threadgroups/threadgroups.cc

@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2017 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/logging.h"
+#include "android-base/stringprintf.h"
+#include "jni.h"
+#include "jvmti.h"
+#include "scoped_local_ref.h"
+
+// Test infrastructure
+#include "jni_helper.h"
+#include "jvmti_helper.h"
+#include "test_env.h"
+#include "ti_macros.h"
+
+namespace art {
+namespace Test925ThreadGroups {
+
+//   private static native Object[] getThreadGroupInfo();
+//   // Returns an array where element 0 is an array of threads and element 1 is an array of groups.
+//   private static native Object[] getThreadGroupChildren();
+
+extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test925_getTopThreadGroups(
+    JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED) {
+  jthreadGroup* groups;
+  jint group_count;
+  jvmtiError result = jvmti_env->GetTopThreadGroups(&group_count, &groups);
+  if (JvmtiErrorToException(env, jvmti_env, result)) {
+    return nullptr;
+  }
+
+  auto callback = [&](jint index) -> jobject {
+    return groups[index];
+  };
+  jobjectArray ret = CreateObjectArray(env, group_count, "java/lang/ThreadGroup", callback);
+
+  jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(groups));
+
+  return ret;
+}
+
+extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test925_getThreadGroupInfo(
+    JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthreadGroup group) {
+  jvmtiThreadGroupInfo info;
+  jvmtiError result = jvmti_env->GetThreadGroupInfo(group, &info);
+  if (JvmtiErrorToException(env, jvmti_env, result)) {
+    return nullptr;
+  }
+
+  auto callback = [&](jint index) -> jobject {
+    switch (index) {
+      // The parent.
+      case 0:
+        return info.parent;
+
+      // The name.
+      case 1:
+        return (info.name == nullptr) ? nullptr : env->NewStringUTF(info.name);
+
+      // The priority. Use a string for simplicity of construction.
+      case 2:
+        return env->NewStringUTF(android::base::StringPrintf("%d", info.max_priority).c_str());
+
+      // Whether it's a daemon. Use a string for simplicity of construction.
+      case 3:
+        return env->NewStringUTF(info.is_daemon == JNI_TRUE ? "true" : "false");
+    }
+    LOG(FATAL) << "Should not reach here";
+    UNREACHABLE();
+  };
+  return CreateObjectArray(env, 4, "java/lang/Object", callback);
+}
+
+extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test925_getThreadGroupChildren(
+    JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthreadGroup group) {
+  jint thread_count;
+  jthread* threads;
+  jint threadgroup_count;
+  jthreadGroup* groups;
+
+  jvmtiError result = jvmti_env->GetThreadGroupChildren(group,
+                                                        &thread_count,
+                                                        &threads,
+                                                        &threadgroup_count,
+                                                        &groups);
+  if (JvmtiErrorToException(env, jvmti_env, result)) {
+    return nullptr;
+  }
+
+  auto callback = [&](jint component_index) -> jobject {
+    if (component_index == 0) {
+      // Threads.
+      auto inner_callback = [&](jint index) {
+        return threads[index];
+      };
+      return CreateObjectArray(env, thread_count, "java/lang/Thread", inner_callback);
+    } else {
+      // Groups.
+      auto inner_callback = [&](jint index) {
+        return groups[index];
+      };
+      return CreateObjectArray(env, threadgroup_count, "java/lang/ThreadGroup", inner_callback);
+    }
+  };
+  jobjectArray ret = CreateObjectArray(env, 2, "java/lang/Object", callback);
+
+  jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(threads));
+  jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(groups));
+
+  return ret;
+}
+
+}  // namespace Test925ThreadGroups
+}  // namespace art