Enable JVMTI GetOwnedMonitorInfo and GetOwnedMonitorStackDepthInfo
This enables the can_get_owned_monitor_info and
can_get_owned_monitor_stack_depth_info JVMTI capabilities and
implements all associated behaviors and functions.
Test: ./test.py --host -j50
Bug: 34415266
Bug: 62821960
Change-Id: Ia88d042259d5b15a4718f0b7698df7e7add87f1d
diff --git a/test/1922-owned-monitors-info/owned_monitors.cc b/test/1922-owned-monitors-info/owned_monitors.cc
new file mode 100644
index 0000000..66a8368
--- /dev/null
+++ b/test/1922-owned-monitors-info/owned_monitors.cc
@@ -0,0 +1,144 @@
+/*
+ * 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 <pthread.h>
+
+#include <cstdio>
+#include <iostream>
+#include <vector>
+
+#include "android-base/logging.h"
+#include "jni.h"
+#include "jvmti.h"
+
+#include "scoped_local_ref.h"
+#include "scoped_primitive_array.h"
+
+// Test infrastructure
+#include "jvmti_helper.h"
+#include "test_env.h"
+
+namespace art {
+namespace Test1922OwnedMonitors {
+
+static bool doMonitorEnter(JNIEnv* env, jobject target) {
+ return env->MonitorEnter(target) != 0;
+}
+static bool doMonitorExit(JNIEnv* env, jobject target) {
+ return env->MonitorExit(target) != 0;
+}
+
+static bool doCallRunnable(JNIEnv* env, jobject next) {
+ ScopedLocalRef<jclass> run_class(env, env->FindClass("java/lang/Runnable"));
+ if (run_class.get() == nullptr) {
+ return true;
+ }
+ jmethodID run = env->GetMethodID(run_class.get(), "run", "()V");
+ if (env->ExceptionCheck()) {
+ return true;
+ }
+ env->CallVoidMethod(next, run);
+ return env->ExceptionCheck();
+}
+
+extern "C" JNIEXPORT void JNICALL Java_art_Test1922_00024Target_lockThisNative(
+ JNIEnv* env, jobject thiz, jobject next) {
+ if (doMonitorEnter(env, thiz)) {
+ return;
+ }
+ if (doCallRunnable(env, next)) {
+ return;
+ }
+ if (doMonitorExit(env, thiz)) {
+ return;
+ }
+}
+
+extern "C" JNIEXPORT void JNICALL Java_art_Test1922_00024Target_lockNative(
+ JNIEnv* env, jobject thiz ATTRIBUTE_UNUSED, jobject mon, jobject next) {
+ if (doMonitorEnter(env, mon)) {
+ return;
+ }
+ if (doCallRunnable(env, next)) {
+ return;
+ }
+ if (doMonitorExit(env, mon)) {
+ return;
+ }
+}
+
+extern "C" JNIEXPORT void JNICALL Java_art_Test1922_setupTest(JNIEnv* env, jclass) {
+ jvmtiCapabilities caps;
+ memset(&caps, 0, sizeof(caps));
+ caps.can_get_owned_monitor_info = 1;
+ caps.can_get_owned_monitor_stack_depth_info = 1;
+ JvmtiErrorToException(env, jvmti_env, jvmti_env->AddCapabilities(&caps));
+}
+
+extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test1922_getOwnedMonitorStackDepthInfo(
+ JNIEnv* env, jclass, jthread thread) {
+ jint len = 0;
+ jvmtiMonitorStackDepthInfo* monitors = nullptr;
+ if (JvmtiErrorToException(
+ env, jvmti_env, jvmti_env->GetOwnedMonitorStackDepthInfo(thread, &len, &monitors))) {
+ return nullptr;
+ }
+ ScopedLocalRef<jclass> ret_class(env, env->FindClass("art/Test1922$MonitorStackDepthInfo"));
+ if (ret_class.get() == nullptr) {
+ // CNFE should be pending.
+ return nullptr;
+ }
+ jmethodID constructor = env->GetMethodID(ret_class.get(), "<init>", "(ILjava/lang/Object;)V");
+ if (env->ExceptionCheck()) {
+ return nullptr;
+ }
+ return CreateObjectArray(env, len, "art/Test1922$MonitorStackDepthInfo",
+ [&](jint i) {
+ return env->NewObject(ret_class.get(),
+ constructor,
+ monitors[i].stack_depth,
+ monitors[i].monitor);
+ });
+}
+
+extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test1922_getOwnedMonitors(JNIEnv* env,
+ jclass,
+ jthread thread) {
+ jint len = 0;
+ jobject* arr = nullptr;
+ if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetOwnedMonitorInfo(thread, &len, &arr))) {
+ return nullptr;
+ }
+ ScopedLocalRef<jclass> obj_class(env, env->FindClass("java/lang/Object"));
+ if (obj_class.get() == nullptr) {
+ // CNFE should be pending.
+ return nullptr;
+ }
+ jobjectArray ret = env->NewObjectArray(len, obj_class.get(), nullptr);
+ if (ret == nullptr) {
+ return nullptr;
+ }
+ for (jint i = 0; i < len; i++) {
+ env->SetObjectArrayElement(ret, i, arr[i]);
+ if (env->ExceptionCheck()) {
+ return nullptr;
+ }
+ }
+ return ret;
+}
+
+} // namespace Test1922OwnedMonitors
+} // namespace art