test/924-threads/threads.cc - platform/art - Git at Google

 /*
  * 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 <mutex>
 #include <string>
 #include <vector>

 #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 Test924Threads {

 struct WaiterStruct {
   std::atomic<bool> started;
   std::atomic<bool> finish;
 };

 extern "C" JNIEXPORT jlong JNICALL Java_art_Test924_nativeWaiterStructAlloc(
     JNIEnv* env, jclass TestClass ATTRIBUTE_UNUSED) {
   WaiterStruct* s = nullptr;
   if (JvmtiErrorToException(env,
                             jvmti_env,
                             jvmti_env->Allocate(sizeof(WaiterStruct),
                                                 reinterpret_cast<unsigned char**>(&s)))) {
     return 0;
   }
   s->started = false;
   s->finish = false;
   return static_cast<jlong>(reinterpret_cast<intptr_t>(s));
 }

 extern "C" JNIEXPORT void JNICALL Java_art_Test924_nativeWaiterStructWaitForNative(
     JNIEnv* env ATTRIBUTE_UNUSED, jclass TestClass ATTRIBUTE_UNUSED, jlong waiter_struct) {
   WaiterStruct* s = reinterpret_cast<WaiterStruct*>(static_cast<intptr_t>(waiter_struct));
   while (!s->started) { }
 }

 extern "C" JNIEXPORT void JNICALL Java_art_Test924_nativeWaiterStructFinish(
     JNIEnv* env ATTRIBUTE_UNUSED, jclass TestClass ATTRIBUTE_UNUSED, jlong waiter_struct) {
   WaiterStruct* s = reinterpret_cast<WaiterStruct*>(static_cast<intptr_t>(waiter_struct));
   s->finish = true;
 }

 extern "C" JNIEXPORT void JNICALL Java_art_Test924_nativeLoop(JNIEnv* env,
                                                               jclass TestClass ATTRIBUTE_UNUSED,
                                                               jlong waiter_struct) {
   WaiterStruct* s = reinterpret_cast<WaiterStruct*>(static_cast<intptr_t>(waiter_struct));
   s->started = true;
   while (!s->finish) { }
   JvmtiErrorToException(env, jvmti_env, jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(s)));
 }

 // private static native Thread getCurrentThread();
 // private static native Object[] getThreadInfo(Thread t);

 extern "C" JNIEXPORT jthread JNICALL Java_art_Test924_getCurrentThread(
     JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED) {
   jthread thread = nullptr;
   jvmtiError result = jvmti_env->GetCurrentThread(&thread);
   if (JvmtiErrorToException(env, jvmti_env, result)) {
     return nullptr;
   }
   return thread;
 }

 extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test924_getThreadInfo(
     JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthread thread) {
   jvmtiThreadInfo info;
   memset(&info, 0, sizeof(jvmtiThreadInfo));

   jvmtiError result = jvmti_env->GetThreadInfo(thread, &info);
   if (JvmtiErrorToException(env, jvmti_env, result)) {
     return nullptr;
   }

   auto callback = [&](jint component_index) -> jobject {
     switch (component_index) {
       // The name.
       case 0:
         return (info.name == nullptr) ? nullptr : env->NewStringUTF(info.name);

       // The priority. Use a string for simplicity of construction.
       case 1:
         return env->NewStringUTF(android::base::StringPrintf("%d", info.priority).c_str());

       // Whether it's a daemon. Use a string for simplicity of construction.
       case 2:
         return env->NewStringUTF(info.is_daemon == JNI_TRUE ? "true" : "false");

       // The thread group;
       case 3:
         return env->NewLocalRef(info.thread_group);

       // The context classloader.
       case 4:
         return env->NewLocalRef(info.context_class_loader);
     }
     LOG(FATAL) << "Should not reach here";
     UNREACHABLE();
   };
   jobjectArray ret = CreateObjectArray(env, 5, "java/lang/Object", callback);

   jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(info.name));
   if (info.thread_group != nullptr) {
     env->DeleteLocalRef(info.thread_group);
   }
   if (info.context_class_loader != nullptr) {
     env->DeleteLocalRef(info.context_class_loader);
   }

   return ret;
 }

 extern "C" JNIEXPORT jint JNICALL Java_art_Test924_getThreadState(
     JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthread thread) {
   jint state;
   jvmtiError result = jvmti_env->GetThreadState(thread, &state);
   if (JvmtiErrorToException(env, jvmti_env, result)) {
     return 0;
   }
   return state;
 }

 extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test924_getAllThreads(
     JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED) {
   jint thread_count;
   jthread* threads;

   jvmtiError result = jvmti_env->GetAllThreads(&thread_count, &threads);
   if (JvmtiErrorToException(env, jvmti_env, result)) {
     return nullptr;
   }

   auto callback = [&](jint index) {
     return threads[index];
   };
   jobjectArray ret = CreateObjectArray(env, thread_count, "java/lang/Thread", callback);

   jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(threads));

   return ret;
 }

 extern "C" JNIEXPORT jlong JNICALL Java_art_Test924_getTLS(
     JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthread thread) {
   void* tls;
   jvmtiError result = jvmti_env->GetThreadLocalStorage(thread, &tls);
   if (JvmtiErrorToException(env, jvmti_env, result)) {
     return 0;
   }
   return static_cast<jlong>(reinterpret_cast<uintptr_t>(tls));
 }

 extern "C" JNIEXPORT void JNICALL Java_art_Test924_setTLS(
     JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthread thread, jlong val) {
   const void* tls = reinterpret_cast<void*>(static_cast<uintptr_t>(val));
   jvmtiError result = jvmti_env->SetThreadLocalStorage(thread, tls);
   JvmtiErrorToException(env, jvmti_env, result);
 }

 static std::mutex gEventsMutex;
 static std::vector<std::string> gEvents;

 static void JNICALL ThreadEvent(jvmtiEnv* jvmti_env,
                                 JNIEnv* jni_env,
                                 jthread thread,
                                 bool is_start) {
   jvmtiThreadInfo info;
   {
     std::lock_guard<std::mutex> guard(gEventsMutex);

     jvmtiError result = jvmti_env->GetThreadInfo(thread, &info);
     if (result != JVMTI_ERROR_NONE) {
       gEvents.push_back("Error getting thread info");
       return;
     }

     gEvents.push_back(android::base::StringPrintf("Thread(%s): %s",
                                                   info.name,
                                                   is_start ? "start" : "end"));
   }

   jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(info.name));
   jni_env->DeleteLocalRef(info.thread_group);
   jni_env->DeleteLocalRef(info.context_class_loader);
 }

 static void JNICALL ThreadStart(jvmtiEnv* jvmti_env,
                                 JNIEnv* jni_env,
                                 jthread thread) {
   ThreadEvent(jvmti_env, jni_env, thread, true);
 }

 static void JNICALL ThreadEnd(jvmtiEnv* jvmti_env,
                               JNIEnv* jni_env,
                               jthread thread) {
   ThreadEvent(jvmti_env, jni_env, thread, false);
 }

 extern "C" JNIEXPORT void JNICALL Java_art_Test924_enableThreadEvents(
     JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jboolean b) {
   if (b == JNI_FALSE) {
     jvmtiError ret = jvmti_env->SetEventNotificationMode(JVMTI_DISABLE,
                                                          JVMTI_EVENT_THREAD_START,
                                                          nullptr);
     if (JvmtiErrorToException(env, jvmti_env, ret)) {
       return;
     }
     ret = jvmti_env->SetEventNotificationMode(JVMTI_DISABLE,
                                               JVMTI_EVENT_THREAD_END,
                                               nullptr);
     JvmtiErrorToException(env, jvmti_env, ret);
     return;
   }

   jvmtiEventCallbacks callbacks;
   memset(&callbacks, 0, sizeof(jvmtiEventCallbacks));
   callbacks.ThreadStart = ThreadStart;
   callbacks.ThreadEnd = ThreadEnd;
   jvmtiError ret = jvmti_env->SetEventCallbacks(&callbacks, sizeof(callbacks));
   if (JvmtiErrorToException(env, jvmti_env, ret)) {
     return;
   }

   ret = jvmti_env->SetEventNotificationMode(JVMTI_ENABLE,
                                             JVMTI_EVENT_THREAD_START,
                                             nullptr);
   if (JvmtiErrorToException(env, jvmti_env, ret)) {
     return;
   }
   ret = jvmti_env->SetEventNotificationMode(JVMTI_ENABLE,
                                             JVMTI_EVENT_THREAD_END,
                                             nullptr);
   JvmtiErrorToException(env, jvmti_env, ret);
 }

 extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test924_getThreadEventMessages(
     JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED) {
   std::lock_guard<std::mutex> guard(gEventsMutex);
   jobjectArray ret = CreateObjectArray(env,
                                        static_cast<jint>(gEvents.size()),
                                        "java/lang/String",
                                        [&](jint i) {
     return env->NewStringUTF(gEvents[i].c_str());
   });
   gEvents.clear();
   return ret;
 }

 }  // namespace Test924Threads
 }  // namespace art
	/*
	* 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 <mutex>
	#include <string>
	#include <vector>

	#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 Test924Threads {

	struct WaiterStruct {
	std::atomic<bool> started;
	std::atomic<bool> finish;
	};

	extern "C" JNIEXPORT jlong JNICALL Java_art_Test924_nativeWaiterStructAlloc(
	JNIEnv* env, jclass TestClass ATTRIBUTE_UNUSED) {
	WaiterStruct* s = nullptr;
	if (JvmtiErrorToException(env,
	jvmti_env,
	jvmti_env->Allocate(sizeof(WaiterStruct),
	reinterpret_cast<unsigned char**>(&s)))) {
	return 0;
	}
	s->started = false;
	s->finish = false;
	return static_cast<jlong>(reinterpret_cast<intptr_t>(s));
	}

	extern "C" JNIEXPORT void JNICALL Java_art_Test924_nativeWaiterStructWaitForNative(
	JNIEnv* env ATTRIBUTE_UNUSED, jclass TestClass ATTRIBUTE_UNUSED, jlong waiter_struct) {
	WaiterStruct* s = reinterpret_cast<WaiterStruct*>(static_cast<intptr_t>(waiter_struct));
	while (!s->started) { }
	}

	extern "C" JNIEXPORT void JNICALL Java_art_Test924_nativeWaiterStructFinish(
	JNIEnv* env ATTRIBUTE_UNUSED, jclass TestClass ATTRIBUTE_UNUSED, jlong waiter_struct) {
	WaiterStruct* s = reinterpret_cast<WaiterStruct*>(static_cast<intptr_t>(waiter_struct));
	s->finish = true;
	}

	extern "C" JNIEXPORT void JNICALL Java_art_Test924_nativeLoop(JNIEnv* env,
	jclass TestClass ATTRIBUTE_UNUSED,
	jlong waiter_struct) {
	WaiterStruct* s = reinterpret_cast<WaiterStruct*>(static_cast<intptr_t>(waiter_struct));
	s->started = true;
	while (!s->finish) { }
	JvmtiErrorToException(env, jvmti_env, jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(s)));
	}

	// private static native Thread getCurrentThread();
	// private static native Object[] getThreadInfo(Thread t);

	extern "C" JNIEXPORT jthread JNICALL Java_art_Test924_getCurrentThread(
	JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED) {
	jthread thread = nullptr;
	jvmtiError result = jvmti_env->GetCurrentThread(&thread);
	if (JvmtiErrorToException(env, jvmti_env, result)) {
	return nullptr;
	}
	return thread;
	}

	extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test924_getThreadInfo(
	JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthread thread) {
	jvmtiThreadInfo info;
	memset(&info, 0, sizeof(jvmtiThreadInfo));

	jvmtiError result = jvmti_env->GetThreadInfo(thread, &info);
	if (JvmtiErrorToException(env, jvmti_env, result)) {
	return nullptr;
	}

	auto callback = [&](jint component_index) -> jobject {
	switch (component_index) {
	// The name.
	case 0:
	return (info.name == nullptr) ? nullptr : env->NewStringUTF(info.name);

	// The priority. Use a string for simplicity of construction.
	case 1:
	return env->NewStringUTF(android::base::StringPrintf("%d", info.priority).c_str());

	// Whether it's a daemon. Use a string for simplicity of construction.
	case 2:
	return env->NewStringUTF(info.is_daemon == JNI_TRUE ? "true" : "false");

	// The thread group;
	case 3:
	return env->NewLocalRef(info.thread_group);

	// The context classloader.
	case 4:
	return env->NewLocalRef(info.context_class_loader);
	}
	LOG(FATAL) << "Should not reach here";
	UNREACHABLE();
	};
	jobjectArray ret = CreateObjectArray(env, 5, "java/lang/Object", callback);

	jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(info.name));
	if (info.thread_group != nullptr) {
	env->DeleteLocalRef(info.thread_group);
	}
	if (info.context_class_loader != nullptr) {
	env->DeleteLocalRef(info.context_class_loader);
	}

	return ret;
	}

	extern "C" JNIEXPORT jint JNICALL Java_art_Test924_getThreadState(
	JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthread thread) {
	jint state;
	jvmtiError result = jvmti_env->GetThreadState(thread, &state);
	if (JvmtiErrorToException(env, jvmti_env, result)) {
	return 0;
	}
	return state;
	}

	extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test924_getAllThreads(
	JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED) {
	jint thread_count;
	jthread* threads;

	jvmtiError result = jvmti_env->GetAllThreads(&thread_count, &threads);
	if (JvmtiErrorToException(env, jvmti_env, result)) {
	return nullptr;
	}

	auto callback = [&](jint index) {
	return threads[index];
	};
	jobjectArray ret = CreateObjectArray(env, thread_count, "java/lang/Thread", callback);

	jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(threads));

	return ret;
	}

	extern "C" JNIEXPORT jlong JNICALL Java_art_Test924_getTLS(
	JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthread thread) {
	void* tls;
	jvmtiError result = jvmti_env->GetThreadLocalStorage(thread, &tls);
	if (JvmtiErrorToException(env, jvmti_env, result)) {
	return 0;
	}
	return static_cast<jlong>(reinterpret_cast<uintptr_t>(tls));
	}

	extern "C" JNIEXPORT void JNICALL Java_art_Test924_setTLS(
	JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jthread thread, jlong val) {
	const void* tls = reinterpret_cast<void*>(static_cast<uintptr_t>(val));
	jvmtiError result = jvmti_env->SetThreadLocalStorage(thread, tls);
	JvmtiErrorToException(env, jvmti_env, result);
	}

	static std::mutex gEventsMutex;
	static std::vector<std::string> gEvents;

	static void JNICALL ThreadEvent(jvmtiEnv* jvmti_env,
	JNIEnv* jni_env,
	jthread thread,
	bool is_start) {
	jvmtiThreadInfo info;
	{
	std::lock_guard<std::mutex> guard(gEventsMutex);

	jvmtiError result = jvmti_env->GetThreadInfo(thread, &info);
	if (result != JVMTI_ERROR_NONE) {
	gEvents.push_back("Error getting thread info");
	return;
	}

	gEvents.push_back(android::base::StringPrintf("Thread(%s): %s",
	info.name,
	is_start ? "start" : "end"));
	}

	jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(info.name));
	jni_env->DeleteLocalRef(info.thread_group);
	jni_env->DeleteLocalRef(info.context_class_loader);
	}

	static void JNICALL ThreadStart(jvmtiEnv* jvmti_env,
	JNIEnv* jni_env,
	jthread thread) {
	ThreadEvent(jvmti_env, jni_env, thread, true);
	}

	static void JNICALL ThreadEnd(jvmtiEnv* jvmti_env,
	JNIEnv* jni_env,
	jthread thread) {
	ThreadEvent(jvmti_env, jni_env, thread, false);
	}

	extern "C" JNIEXPORT void JNICALL Java_art_Test924_enableThreadEvents(
	JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jboolean b) {
	if (b == JNI_FALSE) {
	jvmtiError ret = jvmti_env->SetEventNotificationMode(JVMTI_DISABLE,
	JVMTI_EVENT_THREAD_START,
	nullptr);
	if (JvmtiErrorToException(env, jvmti_env, ret)) {
	return;
	}
	ret = jvmti_env->SetEventNotificationMode(JVMTI_DISABLE,
	JVMTI_EVENT_THREAD_END,
	nullptr);
	JvmtiErrorToException(env, jvmti_env, ret);
	return;
	}

	jvmtiEventCallbacks callbacks;
	memset(&callbacks, 0, sizeof(jvmtiEventCallbacks));
	callbacks.ThreadStart = ThreadStart;
	callbacks.ThreadEnd = ThreadEnd;
	jvmtiError ret = jvmti_env->SetEventCallbacks(&callbacks, sizeof(callbacks));
	if (JvmtiErrorToException(env, jvmti_env, ret)) {
	return;
	}

	ret = jvmti_env->SetEventNotificationMode(JVMTI_ENABLE,
	JVMTI_EVENT_THREAD_START,
	nullptr);
	if (JvmtiErrorToException(env, jvmti_env, ret)) {
	return;
	}
	ret = jvmti_env->SetEventNotificationMode(JVMTI_ENABLE,
	JVMTI_EVENT_THREAD_END,
	nullptr);
	JvmtiErrorToException(env, jvmti_env, ret);
	}

	extern "C" JNIEXPORT jobjectArray JNICALL Java_art_Test924_getThreadEventMessages(
	JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED) {
	std::lock_guard<std::mutex> guard(gEventsMutex);
	jobjectArray ret = CreateObjectArray(env,
	static_cast<jint>(gEvents.size()),
	"java/lang/String",
	[&](jint i) {
	return env->NewStringUTF(gEvents[i].c_str());
	});
	gEvents.clear();
	return ret;
	}

	} // namespace Test924Threads
	} // namespace art