| /* Copyright (C) 2017 The Android Open Source Project |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This file implements interfaces from the file jvmti.h. This implementation |
| * is licensed under the same terms as the file jvmti.h. The |
| * copyright and license information for the file jvmti.h follows. |
| * |
| * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include "ti_thread.h" |
| |
| #include "android-base/strings.h" |
| #include "art_field.h" |
| #include "art_jvmti.h" |
| #include "base/logging.h" |
| #include "base/mutex.h" |
| #include "events-inl.h" |
| #include "gc/system_weak.h" |
| #include "gc_root-inl.h" |
| #include "jni_internal.h" |
| #include "mirror/class.h" |
| #include "mirror/object-inl.h" |
| #include "mirror/string.h" |
| #include "obj_ptr.h" |
| #include "runtime.h" |
| #include "runtime_callbacks.h" |
| #include "ScopedLocalRef.h" |
| #include "scoped_thread_state_change-inl.h" |
| #include "thread-inl.h" |
| #include "thread_list.h" |
| #include "well_known_classes.h" |
| |
| namespace openjdkjvmti { |
| |
| struct ThreadCallback : public art::ThreadLifecycleCallback, public art::RuntimePhaseCallback { |
| jthread GetThreadObject(art::Thread* self) REQUIRES_SHARED(art::Locks::mutator_lock_) { |
| if (self->GetPeer() == nullptr) { |
| return nullptr; |
| } |
| return self->GetJniEnv()->AddLocalReference<jthread>(self->GetPeer()); |
| } |
| template <ArtJvmtiEvent kEvent> |
| void Post(art::Thread* self) REQUIRES_SHARED(art::Locks::mutator_lock_) { |
| DCHECK_EQ(self, art::Thread::Current()); |
| ScopedLocalRef<jthread> thread(self->GetJniEnv(), GetThreadObject(self)); |
| art::ScopedThreadSuspension sts(self, art::ThreadState::kNative); |
| event_handler->DispatchEvent<kEvent>(self, |
| reinterpret_cast<JNIEnv*>(self->GetJniEnv()), |
| thread.get()); |
| } |
| |
| void ThreadStart(art::Thread* self) OVERRIDE REQUIRES_SHARED(art::Locks::mutator_lock_) { |
| if (!started) { |
| // Runtime isn't started. We only expect at most the signal handler or JIT threads to be |
| // started here. |
| if (art::kIsDebugBuild) { |
| std::string name; |
| self->GetThreadName(name); |
| if (name != "JDWP" && |
| name != "Signal Catcher" && |
| !android::base::StartsWith(name, "Jit thread pool")) { |
| LOG(FATAL) << "Unexpected thread before start: " << name; |
| } |
| } |
| return; |
| } |
| Post<ArtJvmtiEvent::kThreadStart>(self); |
| } |
| |
| void ThreadDeath(art::Thread* self) OVERRIDE REQUIRES_SHARED(art::Locks::mutator_lock_) { |
| Post<ArtJvmtiEvent::kThreadEnd>(self); |
| } |
| |
| void NextRuntimePhase(RuntimePhase phase) OVERRIDE REQUIRES_SHARED(art::Locks::mutator_lock_) { |
| if (phase == RuntimePhase::kInit) { |
| // We moved to VMInit. Report the main thread as started (it was attached early, and must |
| // not be reported until Init. |
| started = true; |
| Post<ArtJvmtiEvent::kThreadStart>(art::Thread::Current()); |
| } |
| } |
| |
| EventHandler* event_handler = nullptr; |
| bool started = false; |
| }; |
| |
| ThreadCallback gThreadCallback; |
| |
| void ThreadUtil::Register(EventHandler* handler) { |
| art::Runtime* runtime = art::Runtime::Current(); |
| |
| gThreadCallback.started = runtime->IsStarted(); |
| gThreadCallback.event_handler = handler; |
| |
| art::ScopedThreadStateChange stsc(art::Thread::Current(), |
| art::ThreadState::kWaitingForDebuggerToAttach); |
| art::ScopedSuspendAll ssa("Add thread callback"); |
| runtime->GetRuntimeCallbacks()->AddThreadLifecycleCallback(&gThreadCallback); |
| runtime->GetRuntimeCallbacks()->AddRuntimePhaseCallback(&gThreadCallback); |
| } |
| |
| void ThreadUtil::Unregister() { |
| art::ScopedThreadStateChange stsc(art::Thread::Current(), |
| art::ThreadState::kWaitingForDebuggerToAttach); |
| art::ScopedSuspendAll ssa("Remove thread callback"); |
| art::Runtime* runtime = art::Runtime::Current(); |
| runtime->GetRuntimeCallbacks()->RemoveThreadLifecycleCallback(&gThreadCallback); |
| runtime->GetRuntimeCallbacks()->RemoveRuntimePhaseCallback(&gThreadCallback); |
| } |
| |
| jvmtiError ThreadUtil::GetCurrentThread(jvmtiEnv* env ATTRIBUTE_UNUSED, jthread* thread_ptr) { |
| art::Thread* self = art::Thread::Current(); |
| |
| art::ScopedObjectAccess soa(self); |
| |
| jthread thread_peer; |
| if (self->IsStillStarting()) { |
| thread_peer = nullptr; |
| } else { |
| thread_peer = soa.AddLocalReference<jthread>(self->GetPeer()); |
| } |
| |
| *thread_ptr = thread_peer; |
| return ERR(NONE); |
| } |
| |
| // Read the context classloader from a Java thread object. This is a lazy implementation |
| // that assumes GetThreadInfo isn't called too often. If we instead cache the ArtField, |
| // we will have to add synchronization as this can't be cached on startup (which is |
| // potentially runtime startup). |
| static art::ObjPtr<art::mirror::Object> GetContextClassLoader(art::ObjPtr<art::mirror::Object> peer) |
| REQUIRES_SHARED(art::Locks::mutator_lock_) { |
| if (peer == nullptr) { |
| return nullptr; |
| } |
| art::ObjPtr<art::mirror::Class> klass = peer->GetClass(); |
| art::ArtField* cc_field = klass->FindDeclaredInstanceField("contextClassLoader", |
| "Ljava/lang/ClassLoader;"); |
| CHECK(cc_field != nullptr); |
| return cc_field->GetObject(peer); |
| } |
| |
| // Get the native thread. The spec says a null object denotes the current thread. |
| static art::Thread* GetNativeThread(jthread thread, |
| const art::ScopedObjectAccessAlreadyRunnable& soa) |
| REQUIRES_SHARED(art::Locks::mutator_lock_) { |
| if (thread == nullptr) { |
| return art::Thread::Current(); |
| } |
| |
| art::MutexLock mu(soa.Self(), *art::Locks::thread_list_lock_); |
| return art::Thread::FromManagedThread(soa, thread); |
| } |
| |
| jvmtiError ThreadUtil::GetThreadInfo(jvmtiEnv* env, jthread thread, jvmtiThreadInfo* info_ptr) { |
| if (info_ptr == nullptr) { |
| return ERR(NULL_POINTER); |
| } |
| |
| art::ScopedObjectAccess soa(art::Thread::Current()); |
| |
| art::Thread* self = GetNativeThread(thread, soa); |
| if (self == nullptr && thread == nullptr) { |
| return ERR(INVALID_THREAD); |
| } |
| |
| JvmtiUniquePtr name_uptr; |
| if (self != nullptr) { |
| // Have a native thread object, this thread is alive. |
| std::string name; |
| self->GetThreadName(name); |
| jvmtiError name_result = CopyString( |
| env, name.c_str(), reinterpret_cast<unsigned char**>(&info_ptr->name)); |
| if (name_result != ERR(NONE)) { |
| return name_result; |
| } |
| name_uptr = MakeJvmtiUniquePtr(env, info_ptr->name); |
| |
| info_ptr->priority = self->GetNativePriority(); |
| |
| info_ptr->is_daemon = self->IsDaemon(); |
| |
| art::ObjPtr<art::mirror::Object> peer = self->GetPeerFromOtherThread(); |
| |
| // ThreadGroup. |
| if (peer != nullptr) { |
| art::ArtField* f = art::jni::DecodeArtField(art::WellKnownClasses::java_lang_Thread_group); |
| CHECK(f != nullptr); |
| art::ObjPtr<art::mirror::Object> group = f->GetObject(peer); |
| info_ptr->thread_group = group == nullptr |
| ? nullptr |
| : soa.AddLocalReference<jthreadGroup>(group); |
| } else { |
| info_ptr->thread_group = nullptr; |
| } |
| |
| // Context classloader. |
| art::ObjPtr<art::mirror::Object> ccl = GetContextClassLoader(peer); |
| info_ptr->context_class_loader = ccl == nullptr |
| ? nullptr |
| : soa.AddLocalReference<jobject>(ccl); |
| } else { |
| // Only the peer. This thread has either not been started, or is dead. Read things from |
| // the Java side. |
| art::ObjPtr<art::mirror::Object> peer = soa.Decode<art::mirror::Object>(thread); |
| |
| // Name. |
| { |
| art::ArtField* f = art::jni::DecodeArtField(art::WellKnownClasses::java_lang_Thread_name); |
| CHECK(f != nullptr); |
| art::ObjPtr<art::mirror::Object> name = f->GetObject(peer); |
| std::string name_cpp; |
| const char* name_cstr; |
| if (name != nullptr) { |
| name_cpp = name->AsString()->ToModifiedUtf8(); |
| name_cstr = name_cpp.c_str(); |
| } else { |
| name_cstr = ""; |
| } |
| jvmtiError name_result = CopyString( |
| env, name_cstr, reinterpret_cast<unsigned char**>(&info_ptr->name)); |
| if (name_result != ERR(NONE)) { |
| return name_result; |
| } |
| name_uptr = MakeJvmtiUniquePtr(env, info_ptr->name); |
| } |
| |
| // Priority. |
| { |
| art::ArtField* f = art::jni::DecodeArtField(art::WellKnownClasses::java_lang_Thread_priority); |
| CHECK(f != nullptr); |
| info_ptr->priority = static_cast<jint>(f->GetInt(peer)); |
| } |
| |
| // Daemon. |
| { |
| art::ArtField* f = art::jni::DecodeArtField(art::WellKnownClasses::java_lang_Thread_daemon); |
| CHECK(f != nullptr); |
| info_ptr->is_daemon = f->GetBoolean(peer) == 0 ? JNI_FALSE : JNI_TRUE; |
| } |
| |
| // ThreadGroup. |
| { |
| art::ArtField* f = art::jni::DecodeArtField(art::WellKnownClasses::java_lang_Thread_group); |
| CHECK(f != nullptr); |
| art::ObjPtr<art::mirror::Object> group = f->GetObject(peer); |
| info_ptr->thread_group = group == nullptr |
| ? nullptr |
| : soa.AddLocalReference<jthreadGroup>(group); |
| } |
| |
| // Context classloader. |
| art::ObjPtr<art::mirror::Object> ccl = GetContextClassLoader(peer); |
| info_ptr->context_class_loader = ccl == nullptr |
| ? nullptr |
| : soa.AddLocalReference<jobject>(ccl); |
| } |
| |
| name_uptr.release(); |
| |
| return ERR(NONE); |
| } |
| |
| // Return the thread's (or current thread, if null) thread state. Return kStarting in case |
| // there's no native counterpart (thread hasn't been started, yet, or is dead). |
| static art::ThreadState GetNativeThreadState(jthread thread, |
| const art::ScopedObjectAccessAlreadyRunnable& soa, |
| art::Thread** native_thread) |
| REQUIRES_SHARED(art::Locks::mutator_lock_) { |
| art::Thread* self = nullptr; |
| art::MutexLock mu(soa.Self(), *art::Locks::thread_list_lock_); |
| if (thread == nullptr) { |
| self = art::Thread::Current(); |
| } else { |
| self = art::Thread::FromManagedThread(soa, thread); |
| } |
| *native_thread = self; |
| if (self == nullptr || self->IsStillStarting()) { |
| return art::ThreadState::kStarting; |
| } |
| return self->GetState(); |
| } |
| |
| static jint GetJvmtiThreadStateFromInternal(art::ThreadState internal_thread_state) { |
| jint jvmti_state = JVMTI_THREAD_STATE_ALIVE; |
| |
| if (internal_thread_state == art::ThreadState::kSuspended) { |
| jvmti_state |= JVMTI_THREAD_STATE_SUSPENDED; |
| // Note: We do not have data about the previous state. Otherwise we should load the previous |
| // state here. |
| } |
| |
| if (internal_thread_state == art::ThreadState::kNative) { |
| jvmti_state |= JVMTI_THREAD_STATE_IN_NATIVE; |
| } |
| |
| if (internal_thread_state == art::ThreadState::kRunnable || |
| internal_thread_state == art::ThreadState::kWaitingWeakGcRootRead || |
| internal_thread_state == art::ThreadState::kSuspended) { |
| jvmti_state |= JVMTI_THREAD_STATE_RUNNABLE; |
| } else if (internal_thread_state == art::ThreadState::kBlocked) { |
| jvmti_state |= JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER; |
| } else { |
| // Should be in waiting state. |
| jvmti_state |= JVMTI_THREAD_STATE_WAITING; |
| |
| if (internal_thread_state == art::ThreadState::kTimedWaiting || |
| internal_thread_state == art::ThreadState::kSleeping) { |
| jvmti_state |= JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT; |
| } else { |
| jvmti_state |= JVMTI_THREAD_STATE_WAITING_INDEFINITELY; |
| } |
| |
| if (internal_thread_state == art::ThreadState::kSleeping) { |
| jvmti_state |= JVMTI_THREAD_STATE_SLEEPING; |
| } |
| |
| if (internal_thread_state == art::ThreadState::kTimedWaiting || |
| internal_thread_state == art::ThreadState::kWaiting) { |
| jvmti_state |= JVMTI_THREAD_STATE_IN_OBJECT_WAIT; |
| } |
| |
| // TODO: PARKED. We'll have to inspect the stack. |
| } |
| |
| return jvmti_state; |
| } |
| |
| static jint GetJavaStateFromInternal(art::ThreadState internal_thread_state) { |
| switch (internal_thread_state) { |
| case art::ThreadState::kTerminated: |
| return JVMTI_JAVA_LANG_THREAD_STATE_TERMINATED; |
| |
| case art::ThreadState::kRunnable: |
| case art::ThreadState::kNative: |
| case art::ThreadState::kWaitingWeakGcRootRead: |
| case art::ThreadState::kSuspended: |
| return JVMTI_JAVA_LANG_THREAD_STATE_RUNNABLE; |
| |
| case art::ThreadState::kTimedWaiting: |
| case art::ThreadState::kSleeping: |
| return JVMTI_JAVA_LANG_THREAD_STATE_TIMED_WAITING; |
| |
| case art::ThreadState::kBlocked: |
| return JVMTI_JAVA_LANG_THREAD_STATE_BLOCKED; |
| |
| case art::ThreadState::kStarting: |
| return JVMTI_JAVA_LANG_THREAD_STATE_NEW; |
| |
| case art::ThreadState::kWaiting: |
| case art::ThreadState::kWaitingForGcToComplete: |
| case art::ThreadState::kWaitingPerformingGc: |
| case art::ThreadState::kWaitingForCheckPointsToRun: |
| case art::ThreadState::kWaitingForDebuggerSend: |
| case art::ThreadState::kWaitingForDebuggerToAttach: |
| case art::ThreadState::kWaitingInMainDebuggerLoop: |
| case art::ThreadState::kWaitingForDebuggerSuspension: |
| case art::ThreadState::kWaitingForDeoptimization: |
| case art::ThreadState::kWaitingForGetObjectsAllocated: |
| case art::ThreadState::kWaitingForJniOnLoad: |
| case art::ThreadState::kWaitingForSignalCatcherOutput: |
| case art::ThreadState::kWaitingInMainSignalCatcherLoop: |
| case art::ThreadState::kWaitingForMethodTracingStart: |
| case art::ThreadState::kWaitingForVisitObjects: |
| case art::ThreadState::kWaitingForGcThreadFlip: |
| return JVMTI_JAVA_LANG_THREAD_STATE_WAITING; |
| } |
| LOG(FATAL) << "Unreachable"; |
| UNREACHABLE(); |
| } |
| |
| jvmtiError ThreadUtil::GetThreadState(jvmtiEnv* env ATTRIBUTE_UNUSED, |
| jthread thread, |
| jint* thread_state_ptr) { |
| if (thread_state_ptr == nullptr) { |
| return ERR(NULL_POINTER); |
| } |
| |
| art::ScopedObjectAccess soa(art::Thread::Current()); |
| art::Thread* native_thread = nullptr; |
| art::ThreadState internal_thread_state = GetNativeThreadState(thread, soa, &native_thread); |
| |
| if (internal_thread_state == art::ThreadState::kStarting) { |
| if (thread == nullptr) { |
| // No native thread, and no Java thread? We must be starting up. Report as wrong phase. |
| return ERR(WRONG_PHASE); |
| } |
| |
| // Need to read the Java "started" field to know whether this is starting or terminated. |
| art::ObjPtr<art::mirror::Object> peer = soa.Decode<art::mirror::Object>(thread); |
| art::ObjPtr<art::mirror::Class> klass = peer->GetClass(); |
| art::ArtField* started_field = klass->FindDeclaredInstanceField("started", "Z"); |
| CHECK(started_field != nullptr); |
| bool started = started_field->GetBoolean(peer) != 0; |
| constexpr jint kStartedState = JVMTI_JAVA_LANG_THREAD_STATE_NEW; |
| constexpr jint kTerminatedState = JVMTI_THREAD_STATE_TERMINATED | |
| JVMTI_JAVA_LANG_THREAD_STATE_TERMINATED; |
| *thread_state_ptr = started ? kTerminatedState : kStartedState; |
| return ERR(NONE); |
| } |
| DCHECK(native_thread != nullptr); |
| |
| // Translate internal thread state to JVMTI and Java state. |
| jint jvmti_state = GetJvmtiThreadStateFromInternal(internal_thread_state); |
| if (native_thread->IsInterrupted()) { |
| jvmti_state |= JVMTI_THREAD_STATE_INTERRUPTED; |
| } |
| |
| // Java state is derived from nativeGetState. |
| // Note: Our implementation assigns "runnable" to suspended. As such, we will have slightly |
| // different mask. However, this is for consistency with the Java view. |
| jint java_state = GetJavaStateFromInternal(internal_thread_state); |
| |
| *thread_state_ptr = jvmti_state | java_state; |
| |
| return ERR(NONE); |
| } |
| |
| jvmtiError ThreadUtil::GetAllThreads(jvmtiEnv* env, |
| jint* threads_count_ptr, |
| jthread** threads_ptr) { |
| if (threads_count_ptr == nullptr || threads_ptr == nullptr) { |
| return ERR(NULL_POINTER); |
| } |
| |
| art::Thread* current = art::Thread::Current(); |
| |
| art::ScopedObjectAccess soa(current); |
| |
| art::MutexLock mu(current, *art::Locks::thread_list_lock_); |
| std::list<art::Thread*> thread_list = art::Runtime::Current()->GetThreadList()->GetList(); |
| |
| std::vector<art::ObjPtr<art::mirror::Object>> peers; |
| |
| for (art::Thread* thread : thread_list) { |
| // Skip threads that are still starting. |
| if (thread->IsStillStarting()) { |
| continue; |
| } |
| |
| art::ObjPtr<art::mirror::Object> peer = thread->GetPeerFromOtherThread(); |
| if (peer != nullptr) { |
| peers.push_back(peer); |
| } |
| } |
| |
| if (peers.empty()) { |
| *threads_count_ptr = 0; |
| *threads_ptr = nullptr; |
| } else { |
| unsigned char* data; |
| jvmtiError data_result = env->Allocate(peers.size() * sizeof(jthread), &data); |
| if (data_result != ERR(NONE)) { |
| return data_result; |
| } |
| jthread* threads = reinterpret_cast<jthread*>(data); |
| for (size_t i = 0; i != peers.size(); ++i) { |
| threads[i] = soa.AddLocalReference<jthread>(peers[i]); |
| } |
| |
| *threads_count_ptr = static_cast<jint>(peers.size()); |
| *threads_ptr = threads; |
| } |
| return ERR(NONE); |
| } |
| |
| jvmtiError ThreadUtil::SetThreadLocalStorage(jvmtiEnv* env ATTRIBUTE_UNUSED, |
| jthread thread, |
| const void* data) { |
| art::ScopedObjectAccess soa(art::Thread::Current()); |
| art::Thread* self = GetNativeThread(thread, soa); |
| if (self == nullptr && thread == nullptr) { |
| return ERR(INVALID_THREAD); |
| } |
| if (self == nullptr) { |
| return ERR(THREAD_NOT_ALIVE); |
| } |
| |
| self->SetCustomTLS(data); |
| |
| return ERR(NONE); |
| } |
| |
| jvmtiError ThreadUtil::GetThreadLocalStorage(jvmtiEnv* env ATTRIBUTE_UNUSED, |
| jthread thread, |
| void** data_ptr) { |
| if (data_ptr == nullptr) { |
| return ERR(NULL_POINTER); |
| } |
| |
| art::ScopedObjectAccess soa(art::Thread::Current()); |
| art::Thread* self = GetNativeThread(thread, soa); |
| if (self == nullptr && thread == nullptr) { |
| return ERR(INVALID_THREAD); |
| } |
| if (self == nullptr) { |
| return ERR(THREAD_NOT_ALIVE); |
| } |
| |
| *data_ptr = const_cast<void*>(self->GetCustomTLS()); |
| return ERR(NONE); |
| } |
| |
| struct AgentData { |
| const void* arg; |
| jvmtiStartFunction proc; |
| jthread thread; |
| JavaVM* java_vm; |
| jvmtiEnv* jvmti_env; |
| jint priority; |
| }; |
| |
| static void* AgentCallback(void* arg) { |
| std::unique_ptr<AgentData> data(reinterpret_cast<AgentData*>(arg)); |
| CHECK(data->thread != nullptr); |
| |
| // We already have a peer. So call our special Attach function. |
| art::Thread* self = art::Thread::Attach("JVMTI Agent thread", true, data->thread); |
| CHECK(self != nullptr); |
| // The name in Attach() is only for logging. Set the thread name. This is important so |
| // that the thread is no longer seen as starting up. |
| { |
| art::ScopedObjectAccess soa(self); |
| self->SetThreadName("JVMTI Agent thread"); |
| } |
| |
| // Release the peer. |
| JNIEnv* env = self->GetJniEnv(); |
| env->DeleteGlobalRef(data->thread); |
| data->thread = nullptr; |
| |
| // Run the agent code. |
| data->proc(data->jvmti_env, env, const_cast<void*>(data->arg)); |
| |
| // Detach the thread. |
| int detach_result = data->java_vm->DetachCurrentThread(); |
| CHECK_EQ(detach_result, 0); |
| |
| return nullptr; |
| } |
| |
| jvmtiError ThreadUtil::RunAgentThread(jvmtiEnv* jvmti_env, |
| jthread thread, |
| jvmtiStartFunction proc, |
| const void* arg, |
| jint priority) { |
| if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { |
| return ERR(INVALID_PRIORITY); |
| } |
| JNIEnv* env = art::Thread::Current()->GetJniEnv(); |
| if (thread == nullptr || !env->IsInstanceOf(thread, art::WellKnownClasses::java_lang_Thread)) { |
| return ERR(INVALID_THREAD); |
| } |
| if (proc == nullptr) { |
| return ERR(NULL_POINTER); |
| } |
| |
| std::unique_ptr<AgentData> data(new AgentData); |
| data->arg = arg; |
| data->proc = proc; |
| // We need a global ref for Java objects, as local refs will be invalid. |
| data->thread = env->NewGlobalRef(thread); |
| data->java_vm = art::Runtime::Current()->GetJavaVM(); |
| data->jvmti_env = jvmti_env; |
| data->priority = priority; |
| |
| pthread_t pthread; |
| int pthread_create_result = pthread_create(&pthread, |
| nullptr, |
| &AgentCallback, |
| reinterpret_cast<void*>(data.get())); |
| if (pthread_create_result != 0) { |
| return ERR(INTERNAL); |
| } |
| data.release(); |
| |
| return ERR(NONE); |
| } |
| |
| } // namespace openjdkjvmti |