/* Copyright (C) 2016 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 <memory>
#include <string>
#include <type_traits>
#include <vector>
#include <android-base/logging.h>
#include <jni.h>
#include "jvmti.h"
#include "art_jvmti.h"
#include "base/logging.h" // For gLogVerbosity.
#include "base/mutex.h"
#include "events-inl.h"
#include "jni/jni_env_ext-inl.h"
#include "obj_ptr-inl.h"
#include "object_tagging.h"
#include "runtime.h"
#include "scoped_thread_state_change-inl.h"
#include "thread-current-inl.h"
#include "thread_list.h"
#include "ti_allocator.h"
#include "ti_breakpoint.h"
#include "ti_class.h"
#include "ti_dump.h"
#include "ti_extension.h"
#include "ti_field.h"
#include "ti_heap.h"
#include "ti_jni.h"
#include "ti_logging.h"
#include "ti_method.h"
#include "ti_monitor.h"
#include "ti_object.h"
#include "ti_phase.h"
#include "ti_properties.h"
#include "ti_redefine.h"
#include "ti_search.h"
#include "ti_stack.h"
#include "ti_thread.h"
#include "ti_threadgroup.h"
#include "ti_timers.h"
#include "transform.h"
namespace openjdkjvmti {
// NB These are heap allocated to avoid the static destructors being run if an agent calls exit(3).
// These should never be null.
EventHandler* gEventHandler;
DeoptManager* gDeoptManager;
#define ENSURE_NON_NULL(n) \
do { \
if ((n) == nullptr) { \
return ERR(NULL_POINTER); \
} \
} while (false)
// Returns whether we are able to use all jvmti features.
static bool IsFullJvmtiAvailable() {
art::Runtime* runtime = art::Runtime::Current();
return runtime->GetInstrumentation()->IsForcedInterpretOnly() || runtime->IsJavaDebuggable();
}
class JvmtiFunctions {
private:
static jvmtiError getEnvironmentError(jvmtiEnv* env) {
if (env == nullptr) {
return ERR(INVALID_ENVIRONMENT);
} else if (art::Thread::Current() == nullptr) {
return ERR(UNATTACHED_THREAD);
} else {
return OK;
}
}
#define ENSURE_VALID_ENV(env) \
do { \
jvmtiError ensure_valid_env_ ## __LINE__ = getEnvironmentError(env); \
if (ensure_valid_env_ ## __LINE__ != OK) { \
return ensure_valid_env_ ## __LINE__ ; \
} \
} while (false)
#define ENSURE_HAS_CAP(env, cap) \
do { \
if (ArtJvmTiEnv::AsArtJvmTiEnv(env)->capabilities.cap != 1) { \
return ERR(MUST_POSSESS_CAPABILITY); \
} \
} while (false)
public:
static jvmtiError Allocate(jvmtiEnv* env, jlong size, unsigned char** mem_ptr) {
jvmtiError err = getEnvironmentError(env);
// Allow UNATTACHED_THREAD since we don't really care about that for this function.
if (err != OK && err != ERR(UNATTACHED_THREAD)) {
return err;
}
ENSURE_NON_NULL(mem_ptr);
return AllocUtil::Allocate(env, size, mem_ptr);
}
static jvmtiError Deallocate(jvmtiEnv* env, unsigned char* mem) {
jvmtiError err = getEnvironmentError(env);
// Allow UNATTACHED_THREAD since we don't really care about that for this function.
if (err != OK && err != ERR(UNATTACHED_THREAD)) {
return err;
}
return AllocUtil::Deallocate(env, mem);
}
static jvmtiError GetThreadState(jvmtiEnv* env, jthread thread, jint* thread_state_ptr) {
ENSURE_VALID_ENV(env);
return ThreadUtil::GetThreadState(env, thread, thread_state_ptr);
}
static jvmtiError GetCurrentThread(jvmtiEnv* env, jthread* thread_ptr) {
ENSURE_VALID_ENV(env);
return ThreadUtil::GetCurrentThread(env, thread_ptr);
}
static jvmtiError GetAllThreads(jvmtiEnv* env, jint* threads_count_ptr, jthread** threads_ptr) {
ENSURE_VALID_ENV(env);
return ThreadUtil::GetAllThreads(env, threads_count_ptr, threads_ptr);
}
static jvmtiError SuspendThread(jvmtiEnv* env, jthread thread) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_suspend);
return ThreadUtil::SuspendThread(env, thread);
}
static jvmtiError SuspendThreadList(jvmtiEnv* env,
jint request_count,
const jthread* request_list,
jvmtiError* results) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_suspend);
return ThreadUtil::SuspendThreadList(env, request_count, request_list, results);
}
static jvmtiError ResumeThread(jvmtiEnv* env, jthread thread) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_suspend);
return ThreadUtil::ResumeThread(env, thread);
}
static jvmtiError ResumeThreadList(jvmtiEnv* env,
jint request_count,
const jthread* request_list,
jvmtiError* results) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_suspend);
return ThreadUtil::ResumeThreadList(env, request_count, request_list, results);
}
static jvmtiError StopThread(jvmtiEnv* env, jthread thread, jobject exception) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_signal_thread);
return ThreadUtil::StopThread(env, thread, exception);
}
static jvmtiError InterruptThread(jvmtiEnv* env, jthread thread) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_signal_thread);
return ThreadUtil::InterruptThread(env, thread);
}
static jvmtiError GetThreadInfo(jvmtiEnv* env, jthread thread, jvmtiThreadInfo* info_ptr) {
ENSURE_VALID_ENV(env);
return ThreadUtil::GetThreadInfo(env, thread, info_ptr);
}
static jvmtiError GetOwnedMonitorInfo(jvmtiEnv* env,
jthread thread,
jint* owned_monitor_count_ptr,
jobject** owned_monitors_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_owned_monitor_info);
return StackUtil::GetOwnedMonitorInfo(env,
thread,
owned_monitor_count_ptr,
owned_monitors_ptr);
}
static jvmtiError GetOwnedMonitorStackDepthInfo(jvmtiEnv* env,
jthread thread,
jint* monitor_info_count_ptr,
jvmtiMonitorStackDepthInfo** monitor_info_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_owned_monitor_stack_depth_info);
return StackUtil::GetOwnedMonitorStackDepthInfo(env,
thread,
monitor_info_count_ptr,
monitor_info_ptr);
}
static jvmtiError GetCurrentContendedMonitor(jvmtiEnv* env,
jthread thread,
jobject* monitor_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_current_contended_monitor);
return MonitorUtil::GetCurrentContendedMonitor(env, thread, monitor_ptr);
}
static jvmtiError RunAgentThread(jvmtiEnv* env,
jthread thread,
jvmtiStartFunction proc,
const void* arg,
jint priority) {
ENSURE_VALID_ENV(env);
return ThreadUtil::RunAgentThread(env, thread, proc, arg, priority);
}
static jvmtiError SetThreadLocalStorage(jvmtiEnv* env, jthread thread, const void* data) {
ENSURE_VALID_ENV(env);
return ThreadUtil::SetThreadLocalStorage(env, thread, data);
}
static jvmtiError GetThreadLocalStorage(jvmtiEnv* env, jthread thread, void** data_ptr) {
ENSURE_VALID_ENV(env);
return ThreadUtil::GetThreadLocalStorage(env, thread, data_ptr);
}
static jvmtiError GetTopThreadGroups(jvmtiEnv* env,
jint* group_count_ptr,
jthreadGroup** groups_ptr) {
ENSURE_VALID_ENV(env);
return ThreadGroupUtil::GetTopThreadGroups(env, group_count_ptr, groups_ptr);
}
static jvmtiError GetThreadGroupInfo(jvmtiEnv* env,
jthreadGroup group,
jvmtiThreadGroupInfo* info_ptr) {
ENSURE_VALID_ENV(env);
return ThreadGroupUtil::GetThreadGroupInfo(env, group, info_ptr);
}
static jvmtiError GetThreadGroupChildren(jvmtiEnv* env,
jthreadGroup group,
jint* thread_count_ptr,
jthread** threads_ptr,
jint* group_count_ptr,
jthreadGroup** groups_ptr) {
ENSURE_VALID_ENV(env);
return ThreadGroupUtil::GetThreadGroupChildren(env,
group,
thread_count_ptr,
threads_ptr,
group_count_ptr,
groups_ptr);
}
static jvmtiError GetStackTrace(jvmtiEnv* env,
jthread thread,
jint start_depth,
jint max_frame_count,
jvmtiFrameInfo* frame_buffer,
jint* count_ptr) {
ENSURE_VALID_ENV(env);
return StackUtil::GetStackTrace(env,
thread,
start_depth,
max_frame_count,
frame_buffer,
count_ptr);
}
static jvmtiError GetAllStackTraces(jvmtiEnv* env,
jint max_frame_count,
jvmtiStackInfo** stack_info_ptr,
jint* thread_count_ptr) {
ENSURE_VALID_ENV(env);
return StackUtil::GetAllStackTraces(env, max_frame_count, stack_info_ptr, thread_count_ptr);
}
static jvmtiError GetThreadListStackTraces(jvmtiEnv* env,
jint thread_count,
const jthread* thread_list,
jint max_frame_count,
jvmtiStackInfo** stack_info_ptr) {
ENSURE_VALID_ENV(env);
return StackUtil::GetThreadListStackTraces(env,
thread_count,
thread_list,
max_frame_count,
stack_info_ptr);
}
static jvmtiError GetFrameCount(jvmtiEnv* env, jthread thread, jint* count_ptr) {
ENSURE_VALID_ENV(env);
return StackUtil::GetFrameCount(env, thread, count_ptr);
}
static jvmtiError PopFrame(jvmtiEnv* env, jthread thread) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_pop_frame);
return StackUtil::PopFrame(env, thread);
}
static jvmtiError GetFrameLocation(jvmtiEnv* env,
jthread thread,
jint depth,
jmethodID* method_ptr,
jlocation* location_ptr) {
ENSURE_VALID_ENV(env);
return StackUtil::GetFrameLocation(env, thread, depth, method_ptr, location_ptr);
}
static jvmtiError NotifyFramePop(jvmtiEnv* env, jthread thread, jint depth) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_generate_frame_pop_events);
return StackUtil::NotifyFramePop(env, thread, depth);
}
static jvmtiError ForceEarlyReturnObject(jvmtiEnv* env,
jthread thread ATTRIBUTE_UNUSED,
jobject value ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_force_early_return);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError ForceEarlyReturnInt(jvmtiEnv* env,
jthread thread ATTRIBUTE_UNUSED,
jint value ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_force_early_return);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError ForceEarlyReturnLong(jvmtiEnv* env,
jthread thread ATTRIBUTE_UNUSED,
jlong value ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_force_early_return);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError ForceEarlyReturnFloat(jvmtiEnv* env,
jthread thread ATTRIBUTE_UNUSED,
jfloat value ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_force_early_return);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError ForceEarlyReturnDouble(jvmtiEnv* env,
jthread thread ATTRIBUTE_UNUSED,
jdouble value ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_force_early_return);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError ForceEarlyReturnVoid(jvmtiEnv* env, jthread thread ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_force_early_return);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError FollowReferences(jvmtiEnv* env,
jint heap_filter,
jclass klass,
jobject initial_object,
const jvmtiHeapCallbacks* callbacks,
const void* user_data) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_tag_objects);
HeapUtil heap_util(ArtJvmTiEnv::AsArtJvmTiEnv(env)->object_tag_table.get());
return heap_util.FollowReferences(env,
heap_filter,
klass,
initial_object,
callbacks,
user_data);
}
static jvmtiError IterateThroughHeap(jvmtiEnv* env,
jint heap_filter,
jclass klass,
const jvmtiHeapCallbacks* callbacks,
const void* user_data) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_tag_objects);
HeapUtil heap_util(ArtJvmTiEnv::AsArtJvmTiEnv(env)->object_tag_table.get());
return heap_util.IterateThroughHeap(env, heap_filter, klass, callbacks, user_data);
}
static jvmtiError GetTag(jvmtiEnv* env, jobject object, jlong* tag_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_tag_objects);
JNIEnv* jni_env = GetJniEnv(env);
if (jni_env == nullptr) {
return ERR(INTERNAL);
}
art::ScopedObjectAccess soa(jni_env);
art::ObjPtr<art::mirror::Object> obj = soa.Decode<art::mirror::Object>(object);
if (!ArtJvmTiEnv::AsArtJvmTiEnv(env)->object_tag_table->GetTag(obj.Ptr(), tag_ptr)) {
*tag_ptr = 0;
}
return ERR(NONE);
}
static jvmtiError SetTag(jvmtiEnv* env, jobject object, jlong tag) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_tag_objects);
if (object == nullptr) {
return ERR(NULL_POINTER);
}
JNIEnv* jni_env = GetJniEnv(env);
if (jni_env == nullptr) {
return ERR(INTERNAL);
}
art::ScopedObjectAccess soa(jni_env);
art::ObjPtr<art::mirror::Object> obj = soa.Decode<art::mirror::Object>(object);
ArtJvmTiEnv::AsArtJvmTiEnv(env)->object_tag_table->Set(obj.Ptr(), tag);
return ERR(NONE);
}
static jvmtiError GetObjectsWithTags(jvmtiEnv* env,
jint tag_count,
const jlong* tags,
jint* count_ptr,
jobject** object_result_ptr,
jlong** tag_result_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_tag_objects);
JNIEnv* jni_env = GetJniEnv(env);
if (jni_env == nullptr) {
return ERR(INTERNAL);
}
art::ScopedObjectAccess soa(jni_env);
return ArtJvmTiEnv::AsArtJvmTiEnv(env)->object_tag_table->GetTaggedObjects(env,
tag_count,
tags,
count_ptr,
object_result_ptr,
tag_result_ptr);
}
static jvmtiError ForceGarbageCollection(jvmtiEnv* env) {
ENSURE_VALID_ENV(env);
return HeapUtil::ForceGarbageCollection(env);
}
static jvmtiError IterateOverObjectsReachableFromObject(
jvmtiEnv* env,
jobject object ATTRIBUTE_UNUSED,
jvmtiObjectReferenceCallback object_reference_callback ATTRIBUTE_UNUSED,
const void* user_data ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_tag_objects);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError IterateOverReachableObjects(
jvmtiEnv* env,
jvmtiHeapRootCallback heap_root_callback ATTRIBUTE_UNUSED,
jvmtiStackReferenceCallback stack_ref_callback ATTRIBUTE_UNUSED,
jvmtiObjectReferenceCallback object_ref_callback ATTRIBUTE_UNUSED,
const void* user_data ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_tag_objects);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError IterateOverHeap(jvmtiEnv* env,
jvmtiHeapObjectFilter object_filter ATTRIBUTE_UNUSED,
jvmtiHeapObjectCallback heap_object_callback ATTRIBUTE_UNUSED,
const void* user_data ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_tag_objects);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError IterateOverInstancesOfClass(
jvmtiEnv* env,
jclass klass,
jvmtiHeapObjectFilter object_filter,
jvmtiHeapObjectCallback heap_object_callback,
const void* user_data) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_tag_objects);
HeapUtil heap_util(ArtJvmTiEnv::AsArtJvmTiEnv(env)->object_tag_table.get());
return heap_util.IterateOverInstancesOfClass(
env, klass, object_filter, heap_object_callback, user_data);
}
static jvmtiError GetLocalObject(jvmtiEnv* env,
jthread thread,
jint depth,
jint slot,
jobject* value_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::GetLocalVariable(env, thread, depth, slot, value_ptr);
}
static jvmtiError GetLocalInstance(jvmtiEnv* env,
jthread thread,
jint depth,
jobject* value_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::GetLocalInstance(env, thread, depth, value_ptr);
}
static jvmtiError GetLocalInt(jvmtiEnv* env,
jthread thread,
jint depth,
jint slot,
jint* value_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::GetLocalVariable(env, thread, depth, slot, value_ptr);
}
static jvmtiError GetLocalLong(jvmtiEnv* env,
jthread thread,
jint depth,
jint slot,
jlong* value_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::GetLocalVariable(env, thread, depth, slot, value_ptr);
}
static jvmtiError GetLocalFloat(jvmtiEnv* env,
jthread thread,
jint depth,
jint slot,
jfloat* value_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::GetLocalVariable(env, thread, depth, slot, value_ptr);
}
static jvmtiError GetLocalDouble(jvmtiEnv* env,
jthread thread,
jint depth,
jint slot,
jdouble* value_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::GetLocalVariable(env, thread, depth, slot, value_ptr);
}
static jvmtiError SetLocalObject(jvmtiEnv* env,
jthread thread,
jint depth,
jint slot,
jobject value) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::SetLocalVariable(env, thread, depth, slot, value);
}
static jvmtiError SetLocalInt(jvmtiEnv* env,
jthread thread,
jint depth,
jint slot,
jint value) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::SetLocalVariable(env, thread, depth, slot, value);
}
static jvmtiError SetLocalLong(jvmtiEnv* env,
jthread thread,
jint depth,
jint slot,
jlong value) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::SetLocalVariable(env, thread, depth, slot, value);
}
static jvmtiError SetLocalFloat(jvmtiEnv* env,
jthread thread,
jint depth,
jint slot,
jfloat value) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::SetLocalVariable(env, thread, depth, slot, value);
}
static jvmtiError SetLocalDouble(jvmtiEnv* env,
jthread thread,
jint depth,
jint slot,
jdouble value) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::SetLocalVariable(env, thread, depth, slot, value);
}
static jvmtiError SetBreakpoint(jvmtiEnv* env, jmethodID method, jlocation location) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_generate_breakpoint_events);
return BreakpointUtil::SetBreakpoint(env, method, location);
}
static jvmtiError ClearBreakpoint(jvmtiEnv* env, jmethodID method, jlocation location) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_generate_breakpoint_events);
return BreakpointUtil::ClearBreakpoint(env, method, location);
}
static jvmtiError SetFieldAccessWatch(jvmtiEnv* env, jclass klass, jfieldID field) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_generate_field_access_events);
return FieldUtil::SetFieldAccessWatch(env, klass, field);
}
static jvmtiError ClearFieldAccessWatch(jvmtiEnv* env, jclass klass, jfieldID field) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_generate_field_access_events);
return FieldUtil::ClearFieldAccessWatch(env, klass, field);
}
static jvmtiError SetFieldModificationWatch(jvmtiEnv* env, jclass klass, jfieldID field) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_generate_field_modification_events);
return FieldUtil::SetFieldModificationWatch(env, klass, field);
}
static jvmtiError ClearFieldModificationWatch(jvmtiEnv* env, jclass klass, jfieldID field) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_generate_field_modification_events);
return FieldUtil::ClearFieldModificationWatch(env, klass, field);
}
static jvmtiError GetLoadedClasses(jvmtiEnv* env, jint* class_count_ptr, jclass** classes_ptr) {
ENSURE_VALID_ENV(env);
HeapUtil heap_util(ArtJvmTiEnv::AsArtJvmTiEnv(env)->object_tag_table.get());
return heap_util.GetLoadedClasses(env, class_count_ptr, classes_ptr);
}
static jvmtiError GetClassLoaderClasses(jvmtiEnv* env,
jobject initiating_loader,
jint* class_count_ptr,
jclass** classes_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::GetClassLoaderClasses(env, initiating_loader, class_count_ptr, classes_ptr);
}
static jvmtiError GetClassSignature(jvmtiEnv* env,
jclass klass,
char** signature_ptr,
char** generic_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::GetClassSignature(env, klass, signature_ptr, generic_ptr);
}
static jvmtiError GetClassStatus(jvmtiEnv* env, jclass klass, jint* status_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::GetClassStatus(env, klass, status_ptr);
}
static jvmtiError GetSourceFileName(jvmtiEnv* env, jclass klass, char** source_name_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_source_file_name);
return ClassUtil::GetSourceFileName(env, klass, source_name_ptr);
}
static jvmtiError GetClassModifiers(jvmtiEnv* env, jclass klass, jint* modifiers_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::GetClassModifiers(env, klass, modifiers_ptr);
}
static jvmtiError GetClassMethods(jvmtiEnv* env,
jclass klass,
jint* method_count_ptr,
jmethodID** methods_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::GetClassMethods(env, klass, method_count_ptr, methods_ptr);
}
static jvmtiError GetClassFields(jvmtiEnv* env,
jclass klass,
jint* field_count_ptr,
jfieldID** fields_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::GetClassFields(env, klass, field_count_ptr, fields_ptr);
}
static jvmtiError GetImplementedInterfaces(jvmtiEnv* env,
jclass klass,
jint* interface_count_ptr,
jclass** interfaces_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::GetImplementedInterfaces(env, klass, interface_count_ptr, interfaces_ptr);
}
static jvmtiError GetClassVersionNumbers(jvmtiEnv* env,
jclass klass,
jint* minor_version_ptr,
jint* major_version_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::GetClassVersionNumbers(env, klass, minor_version_ptr, major_version_ptr);
}
static jvmtiError GetConstantPool(jvmtiEnv* env,
jclass klass ATTRIBUTE_UNUSED,
jint* constant_pool_count_ptr ATTRIBUTE_UNUSED,
jint* constant_pool_byte_count_ptr ATTRIBUTE_UNUSED,
unsigned char** constant_pool_bytes_ptr ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_constant_pool);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError IsInterface(jvmtiEnv* env, jclass klass, jboolean* is_interface_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::IsInterface(env, klass, is_interface_ptr);
}
static jvmtiError IsArrayClass(jvmtiEnv* env,
jclass klass,
jboolean* is_array_class_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::IsArrayClass(env, klass, is_array_class_ptr);
}
static jvmtiError IsModifiableClass(jvmtiEnv* env,
jclass klass,
jboolean* is_modifiable_class_ptr) {
ENSURE_VALID_ENV(env);
return Redefiner::IsModifiableClass(env, klass, is_modifiable_class_ptr);
}
static jvmtiError GetClassLoader(jvmtiEnv* env, jclass klass, jobject* classloader_ptr) {
ENSURE_VALID_ENV(env);
return ClassUtil::GetClassLoader(env, klass, classloader_ptr);
}
static jvmtiError GetSourceDebugExtension(jvmtiEnv* env,
jclass klass,
char** source_debug_extension_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_source_debug_extension);
return ClassUtil::GetSourceDebugExtension(env, klass, source_debug_extension_ptr);
}
static jvmtiError RetransformClasses(jvmtiEnv* env, jint class_count, const jclass* classes) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_retransform_classes);
std::string error_msg;
jvmtiError res = Transformer::RetransformClasses(ArtJvmTiEnv::AsArtJvmTiEnv(env),
gEventHandler,
art::Runtime::Current(),
art::Thread::Current(),
class_count,
classes,
&error_msg);
if (res != OK) {
JVMTI_LOG(WARNING, env) << "FAILURE TO RETRANFORM " << error_msg;
}
return res;
}
static jvmtiError RedefineClasses(jvmtiEnv* env,
jint class_count,
const jvmtiClassDefinition* class_definitions) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_redefine_classes);
std::string error_msg;
jvmtiError res = Redefiner::RedefineClasses(ArtJvmTiEnv::AsArtJvmTiEnv(env),
gEventHandler,
art::Runtime::Current(),
art::Thread::Current(),
class_count,
class_definitions,
&error_msg);
if (res != OK) {
JVMTI_LOG(WARNING, env) << "FAILURE TO REDEFINE " << error_msg;
}
return res;
}
static jvmtiError GetObjectSize(jvmtiEnv* env, jobject object, jlong* size_ptr) {
ENSURE_VALID_ENV(env);
return ObjectUtil::GetObjectSize(env, object, size_ptr);
}
static jvmtiError GetObjectHashCode(jvmtiEnv* env, jobject object, jint* hash_code_ptr) {
ENSURE_VALID_ENV(env);
return ObjectUtil::GetObjectHashCode(env, object, hash_code_ptr);
}
static jvmtiError GetObjectMonitorUsage(jvmtiEnv* env,
jobject object,
jvmtiMonitorUsage* info_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_monitor_info);
return ObjectUtil::GetObjectMonitorUsage(env, object, info_ptr);
}
static jvmtiError GetFieldName(jvmtiEnv* env,
jclass klass,
jfieldID field,
char** name_ptr,
char** signature_ptr,
char** generic_ptr) {
ENSURE_VALID_ENV(env);
return FieldUtil::GetFieldName(env, klass, field, name_ptr, signature_ptr, generic_ptr);
}
static jvmtiError GetFieldDeclaringClass(jvmtiEnv* env,
jclass klass,
jfieldID field,
jclass* declaring_class_ptr) {
ENSURE_VALID_ENV(env);
return FieldUtil::GetFieldDeclaringClass(env, klass, field, declaring_class_ptr);
}
static jvmtiError GetFieldModifiers(jvmtiEnv* env,
jclass klass,
jfieldID field,
jint* modifiers_ptr) {
ENSURE_VALID_ENV(env);
return FieldUtil::GetFieldModifiers(env, klass, field, modifiers_ptr);
}
static jvmtiError IsFieldSynthetic(jvmtiEnv* env,
jclass klass,
jfieldID field,
jboolean* is_synthetic_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_synthetic_attribute);
return FieldUtil::IsFieldSynthetic(env, klass, field, is_synthetic_ptr);
}
static jvmtiError GetMethodName(jvmtiEnv* env,
jmethodID method,
char** name_ptr,
char** signature_ptr,
char** generic_ptr) {
ENSURE_VALID_ENV(env);
return MethodUtil::GetMethodName(env, method, name_ptr, signature_ptr, generic_ptr);
}
static jvmtiError GetMethodDeclaringClass(jvmtiEnv* env,
jmethodID method,
jclass* declaring_class_ptr) {
ENSURE_VALID_ENV(env);
return MethodUtil::GetMethodDeclaringClass(env, method, declaring_class_ptr);
}
static jvmtiError GetMethodModifiers(jvmtiEnv* env,
jmethodID method,
jint* modifiers_ptr) {
ENSURE_VALID_ENV(env);
return MethodUtil::GetMethodModifiers(env, method, modifiers_ptr);
}
static jvmtiError GetMaxLocals(jvmtiEnv* env,
jmethodID method,
jint* max_ptr) {
ENSURE_VALID_ENV(env);
return MethodUtil::GetMaxLocals(env, method, max_ptr);
}
static jvmtiError GetArgumentsSize(jvmtiEnv* env,
jmethodID method,
jint* size_ptr) {
ENSURE_VALID_ENV(env);
return MethodUtil::GetArgumentsSize(env, method, size_ptr);
}
static jvmtiError GetLineNumberTable(jvmtiEnv* env,
jmethodID method,
jint* entry_count_ptr,
jvmtiLineNumberEntry** table_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_line_numbers);
return MethodUtil::GetLineNumberTable(env, method, entry_count_ptr, table_ptr);
}
static jvmtiError GetMethodLocation(jvmtiEnv* env,
jmethodID method,
jlocation* start_location_ptr,
jlocation* end_location_ptr) {
ENSURE_VALID_ENV(env);
return MethodUtil::GetMethodLocation(env, method, start_location_ptr, end_location_ptr);
}
static jvmtiError GetLocalVariableTable(jvmtiEnv* env,
jmethodID method,
jint* entry_count_ptr,
jvmtiLocalVariableEntry** table_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_access_local_variables);
return MethodUtil::GetLocalVariableTable(env, method, entry_count_ptr, table_ptr);
}
static jvmtiError GetBytecodes(jvmtiEnv* env,
jmethodID method,
jint* bytecode_count_ptr,
unsigned char** bytecodes_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_bytecodes);
return MethodUtil::GetBytecodes(env, method, bytecode_count_ptr, bytecodes_ptr);
}
static jvmtiError IsMethodNative(jvmtiEnv* env, jmethodID method, jboolean* is_native_ptr) {
ENSURE_VALID_ENV(env);
return MethodUtil::IsMethodNative(env, method, is_native_ptr);
}
static jvmtiError IsMethodSynthetic(jvmtiEnv* env, jmethodID method, jboolean* is_synthetic_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_synthetic_attribute);
return MethodUtil::IsMethodSynthetic(env, method, is_synthetic_ptr);
}
static jvmtiError IsMethodObsolete(jvmtiEnv* env, jmethodID method, jboolean* is_obsolete_ptr) {
ENSURE_VALID_ENV(env);
return MethodUtil::IsMethodObsolete(env, method, is_obsolete_ptr);
}
static jvmtiError SetNativeMethodPrefix(jvmtiEnv* env, const char* prefix ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_set_native_method_prefix);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError SetNativeMethodPrefixes(jvmtiEnv* env,
jint prefix_count ATTRIBUTE_UNUSED,
char** prefixes ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_set_native_method_prefix);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError CreateRawMonitor(jvmtiEnv* env, const char* name, jrawMonitorID* monitor_ptr) {
ENSURE_VALID_ENV(env);
return MonitorUtil::CreateRawMonitor(env, name, monitor_ptr);
}
static jvmtiError DestroyRawMonitor(jvmtiEnv* env, jrawMonitorID monitor) {
ENSURE_VALID_ENV(env);
return MonitorUtil::DestroyRawMonitor(env, monitor);
}
static jvmtiError RawMonitorEnter(jvmtiEnv* env, jrawMonitorID monitor) {
ENSURE_VALID_ENV(env);
return MonitorUtil::RawMonitorEnter(env, monitor);
}
static jvmtiError RawMonitorExit(jvmtiEnv* env, jrawMonitorID monitor) {
ENSURE_VALID_ENV(env);
return MonitorUtil::RawMonitorExit(env, monitor);
}
static jvmtiError RawMonitorWait(jvmtiEnv* env, jrawMonitorID monitor, jlong millis) {
ENSURE_VALID_ENV(env);
return MonitorUtil::RawMonitorWait(env, monitor, millis);
}
static jvmtiError RawMonitorNotify(jvmtiEnv* env, jrawMonitorID monitor) {
ENSURE_VALID_ENV(env);
return MonitorUtil::RawMonitorNotify(env, monitor);
}
static jvmtiError RawMonitorNotifyAll(jvmtiEnv* env, jrawMonitorID monitor) {
ENSURE_VALID_ENV(env);
return MonitorUtil::RawMonitorNotifyAll(env, monitor);
}
static jvmtiError SetJNIFunctionTable(jvmtiEnv* env, const jniNativeInterface* function_table) {
ENSURE_VALID_ENV(env);
return JNIUtil::SetJNIFunctionTable(env, function_table);
}
static jvmtiError GetJNIFunctionTable(jvmtiEnv* env, jniNativeInterface** function_table) {
ENSURE_VALID_ENV(env);
return JNIUtil::GetJNIFunctionTable(env, function_table);
}
// TODO: This will require locking, so that an agent can't remove callbacks when we're dispatching
// an event.
static jvmtiError SetEventCallbacks(jvmtiEnv* env,
const jvmtiEventCallbacks* callbacks,
jint size_of_callbacks) {
ENSURE_VALID_ENV(env);
if (size_of_callbacks < 0) {
return ERR(ILLEGAL_ARGUMENT);
}
if (callbacks == nullptr) {
ArtJvmTiEnv::AsArtJvmTiEnv(env)->event_callbacks.reset();
return ERR(NONE);
}
// Lock the event_info_mutex_ while we replace the callbacks.
ArtJvmTiEnv* art_env = ArtJvmTiEnv::AsArtJvmTiEnv(env);
art::WriterMutexLock lk(art::Thread::Current(), art_env->event_info_mutex_);
std::unique_ptr<ArtJvmtiEventCallbacks> tmp(new ArtJvmtiEventCallbacks());
// Copy over the extension events.
tmp->CopyExtensionsFrom(art_env->event_callbacks.get());
// Never overwrite the extension events.
size_t copy_size = std::min(sizeof(jvmtiEventCallbacks),
static_cast<size_t>(size_of_callbacks));
copy_size = art::RoundDown(copy_size, sizeof(void*));
// Copy non-extension events.
memcpy(tmp.get(), callbacks, copy_size);
// replace the event table.
art_env->event_callbacks = std::move(tmp);
return ERR(NONE);
}
static jvmtiError SetEventNotificationMode(jvmtiEnv* env,
jvmtiEventMode mode,
jvmtiEvent event_type,
jthread event_thread,
...) {
ENSURE_VALID_ENV(env);
ArtJvmTiEnv* art_env = ArtJvmTiEnv::AsArtJvmTiEnv(env);
return gEventHandler->SetEvent(art_env,
event_thread,
GetArtJvmtiEvent(art_env, event_type),
mode);
}
static jvmtiError GenerateEvents(jvmtiEnv* env,
jvmtiEvent event_type ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
return OK;
}
static jvmtiError GetExtensionFunctions(jvmtiEnv* env,
jint* extension_count_ptr,
jvmtiExtensionFunctionInfo** extensions) {
ENSURE_VALID_ENV(env);
ENSURE_NON_NULL(extension_count_ptr);
ENSURE_NON_NULL(extensions);
return ExtensionUtil::GetExtensionFunctions(env, extension_count_ptr, extensions);
}
static jvmtiError GetExtensionEvents(jvmtiEnv* env,
jint* extension_count_ptr,
jvmtiExtensionEventInfo** extensions) {
ENSURE_VALID_ENV(env);
ENSURE_NON_NULL(extension_count_ptr);
ENSURE_NON_NULL(extensions);
return ExtensionUtil::GetExtensionEvents(env, extension_count_ptr, extensions);
}
static jvmtiError SetExtensionEventCallback(jvmtiEnv* env,
jint extension_event_index,
jvmtiExtensionEvent callback) {
ENSURE_VALID_ENV(env);
return ExtensionUtil::SetExtensionEventCallback(env,
extension_event_index,
callback,
gEventHandler);
}
#define FOR_ALL_CAPABILITIES(FUN) \
FUN(can_tag_objects) \
FUN(can_generate_field_modification_events) \
FUN(can_generate_field_access_events) \
FUN(can_get_bytecodes) \
FUN(can_get_synthetic_attribute) \
FUN(can_get_owned_monitor_info) \
FUN(can_get_current_contended_monitor) \
FUN(can_get_monitor_info) \
FUN(can_pop_frame) \
FUN(can_redefine_classes) \
FUN(can_signal_thread) \
FUN(can_get_source_file_name) \
FUN(can_get_line_numbers) \
FUN(can_get_source_debug_extension) \
FUN(can_access_local_variables) \
FUN(can_maintain_original_method_order) \
FUN(can_generate_single_step_events) \
FUN(can_generate_exception_events) \
FUN(can_generate_frame_pop_events) \
FUN(can_generate_breakpoint_events) \
FUN(can_suspend) \
FUN(can_redefine_any_class) \
FUN(can_get_current_thread_cpu_time) \
FUN(can_get_thread_cpu_time) \
FUN(can_generate_method_entry_events) \
FUN(can_generate_method_exit_events) \
FUN(can_generate_all_class_hook_events) \
FUN(can_generate_compiled_method_load_events) \
FUN(can_generate_monitor_events) \
FUN(can_generate_vm_object_alloc_events) \
FUN(can_generate_native_method_bind_events) \
FUN(can_generate_garbage_collection_events) \
FUN(can_generate_object_free_events) \
FUN(can_force_early_return) \
FUN(can_get_owned_monitor_stack_depth_info) \
FUN(can_get_constant_pool) \
FUN(can_set_native_method_prefix) \
FUN(can_retransform_classes) \
FUN(can_retransform_any_class) \
FUN(can_generate_resource_exhaustion_heap_events) \
FUN(can_generate_resource_exhaustion_threads_events)
static jvmtiError GetPotentialCapabilities(jvmtiEnv* env, jvmtiCapabilities* capabilities_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_NON_NULL(capabilities_ptr);
*capabilities_ptr = kPotentialCapabilities;
if (UNLIKELY(!IsFullJvmtiAvailable())) {
#define REMOVE_NONDEBUGGABLE_UNSUPPORTED(e) \
do { \
if (kNonDebuggableUnsupportedCapabilities.e == 1) { \
capabilities_ptr->e = 0; \
} \
} while (false);
FOR_ALL_CAPABILITIES(REMOVE_NONDEBUGGABLE_UNSUPPORTED);
#undef REMOVE_NONDEBUGGABLE_UNSUPPORTED
}
return OK;
}
static jvmtiError AddCapabilities(jvmtiEnv* env, const jvmtiCapabilities* capabilities_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_NON_NULL(capabilities_ptr);
ArtJvmTiEnv* art_env = static_cast<ArtJvmTiEnv*>(env);
jvmtiError ret = OK;
jvmtiCapabilities changed = {};
jvmtiCapabilities potential_capabilities = {};
ret = env->GetPotentialCapabilities(&potential_capabilities);
if (ret != OK) {
return ret;
}
#define ADD_CAPABILITY(e) \
do { \
if (capabilities_ptr->e == 1) { \
if (potential_capabilities.e == 1) { \
if (art_env->capabilities.e != 1) { \
art_env->capabilities.e = 1; \
changed.e = 1; \
}\
} else { \
ret = ERR(NOT_AVAILABLE); \
} \
} \
} while (false);
FOR_ALL_CAPABILITIES(ADD_CAPABILITY);
#undef ADD_CAPABILITY
gEventHandler->HandleChangedCapabilities(ArtJvmTiEnv::AsArtJvmTiEnv(env),
changed,
/*added=*/true);
return ret;
}
static jvmtiError RelinquishCapabilities(jvmtiEnv* env,
const jvmtiCapabilities* capabilities_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_NON_NULL(capabilities_ptr);
ArtJvmTiEnv* art_env = reinterpret_cast<ArtJvmTiEnv*>(env);
jvmtiCapabilities changed = {};
#define DEL_CAPABILITY(e) \
do { \
if (capabilities_ptr->e == 1) { \
if (art_env->capabilities.e == 1) { \
art_env->capabilities.e = 0;\
changed.e = 1; \
} \
} \
} while (false);
FOR_ALL_CAPABILITIES(DEL_CAPABILITY);
#undef DEL_CAPABILITY
gEventHandler->HandleChangedCapabilities(ArtJvmTiEnv::AsArtJvmTiEnv(env),
changed,
/*added=*/false);
return OK;
}
#undef FOR_ALL_CAPABILITIES
static jvmtiError GetCapabilities(jvmtiEnv* env, jvmtiCapabilities* capabilities_ptr) {
ENSURE_VALID_ENV(env);
ENSURE_NON_NULL(capabilities_ptr);
ArtJvmTiEnv* artenv = reinterpret_cast<ArtJvmTiEnv*>(env);
*capabilities_ptr = artenv->capabilities;
return OK;
}
static jvmtiError GetCurrentThreadCpuTimerInfo(jvmtiEnv* env,
jvmtiTimerInfo* info_ptr ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_current_thread_cpu_time);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError GetCurrentThreadCpuTime(jvmtiEnv* env, jlong* nanos_ptr ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_current_thread_cpu_time);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError GetThreadCpuTimerInfo(jvmtiEnv* env,
jvmtiTimerInfo* info_ptr ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_thread_cpu_time);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError GetThreadCpuTime(jvmtiEnv* env,
jthread thread ATTRIBUTE_UNUSED,
jlong* nanos_ptr ATTRIBUTE_UNUSED) {
ENSURE_VALID_ENV(env);
ENSURE_HAS_CAP(env, can_get_thread_cpu_time);
return ERR(NOT_IMPLEMENTED);
}
static jvmtiError GetTimerInfo(jvmtiEnv* env, jvmtiTimerInfo* info_ptr) {
ENSURE_VALID_ENV(env);
return TimerUtil::GetTimerInfo(env, info_ptr);
}
static jvmtiError GetTime(jvmtiEnv* env, jlong* nanos_ptr) {
ENSURE_VALID_ENV(env);
return TimerUtil::GetTime(env, nanos_ptr);
}
static jvmtiError GetAvailableProcessors(jvmtiEnv* env, jint* processor_count_ptr) {
ENSURE_VALID_ENV(env);
return TimerUtil::GetAvailableProcessors(env, processor_count_ptr);
}
static jvmtiError AddToBootstrapClassLoaderSearch(jvmtiEnv* env, const char* segment) {
ENSURE_VALID_ENV(env);
return SearchUtil::AddToBootstrapClassLoaderSearch(env, segment);
}
static jvmtiError AddToSystemClassLoaderSearch(jvmtiEnv* env, const char* segment) {
ENSURE_VALID_ENV(env);
return SearchUtil::AddToSystemClassLoaderSearch(env, segment);
}
static jvmtiError GetSystemProperties(jvmtiEnv* env, jint* count_ptr, char*** property_ptr) {
ENSURE_VALID_ENV(env);
return PropertiesUtil::GetSystemProperties(env, count_ptr, property_ptr);
}
static jvmtiError GetSystemProperty(jvmtiEnv* env, const char* property, char** value_ptr) {
ENSURE_VALID_ENV(env);
return PropertiesUtil::GetSystemProperty(env, property, value_ptr);
}
static jvmtiError SetSystemProperty(jvmtiEnv* env, const char* property, const char* value) {
ENSURE_VALID_ENV(env);
return PropertiesUtil::SetSystemProperty(env, property, value);
}
static jvmtiError GetPhase(jvmtiEnv* env, jvmtiPhase* phase_ptr) {
ENSURE_VALID_ENV(env);
return PhaseUtil::GetPhase(env, phase_ptr);
}
static jvmtiError DisposeEnvironment(jvmtiEnv* env) {
ENSURE_VALID_ENV(env);
ArtJvmTiEnv* tienv = ArtJvmTiEnv::AsArtJvmTiEnv(env);
gEventHandler->RemoveArtJvmTiEnv(tienv);
art::Runtime::Current()->RemoveSystemWeakHolder(tienv->object_tag_table.get());
ThreadUtil::RemoveEnvironment(tienv);
delete tienv;
return OK;
}
static jvmtiError SetEnvironmentLocalStorage(jvmtiEnv* env, const void* data) {
ENSURE_VALID_ENV(env);
reinterpret_cast<ArtJvmTiEnv*>(env)->local_data = const_cast<void*>(data);
return OK;
}
static jvmtiError GetEnvironmentLocalStorage(jvmtiEnv* env, void** data_ptr) {
ENSURE_VALID_ENV(env);
*data_ptr = reinterpret_cast<ArtJvmTiEnv*>(env)->local_data;
return OK;
}
static jvmtiError GetVersionNumber(jvmtiEnv* env, jint* version_ptr) {
ENSURE_VALID_ENV(env);
*version_ptr = ArtJvmTiEnv::AsArtJvmTiEnv(env)->ti_version;
return OK;
}
static jvmtiError GetErrorName(jvmtiEnv* env, jvmtiError error, char** name_ptr) {
ENSURE_NON_NULL(name_ptr);
auto copy_fn = [&](const char* name_cstr) {
jvmtiError res;
JvmtiUniquePtr<char[]> copy = CopyString(env, name_cstr, &res);
if (copy == nullptr) {
*name_ptr = nullptr;
return res;
} else {
*name_ptr = copy.release();
return OK;
}
};
switch (error) {
#define ERROR_CASE(e) case (JVMTI_ERROR_ ## e) : \
return copy_fn("JVMTI_ERROR_"#e);
ERROR_CASE(NONE);
ERROR_CASE(INVALID_THREAD);
ERROR_CASE(INVALID_THREAD_GROUP);
ERROR_CASE(INVALID_PRIORITY);
ERROR_CASE(THREAD_NOT_SUSPENDED);
ERROR_CASE(THREAD_SUSPENDED);
ERROR_CASE(THREAD_NOT_ALIVE);
ERROR_CASE(INVALID_OBJECT);
ERROR_CASE(INVALID_CLASS);
ERROR_CASE(CLASS_NOT_PREPARED);
ERROR_CASE(INVALID_METHODID);
ERROR_CASE(INVALID_LOCATION);
ERROR_CASE(INVALID_FIELDID);
ERROR_CASE(NO_MORE_FRAMES);
ERROR_CASE(OPAQUE_FRAME);
ERROR_CASE(TYPE_MISMATCH);
ERROR_CASE(INVALID_SLOT);
ERROR_CASE(DUPLICATE);
ERROR_CASE(NOT_FOUND);
ERROR_CASE(INVALID_MONITOR);
ERROR_CASE(NOT_MONITOR_OWNER);
ERROR_CASE(INTERRUPT);
ERROR_CASE(INVALID_CLASS_FORMAT);
ERROR_CASE(CIRCULAR_CLASS_DEFINITION);
ERROR_CASE(FAILS_VERIFICATION);
ERROR_CASE(UNSUPPORTED_REDEFINITION_METHOD_ADDED);
ERROR_CASE(UNSUPPORTED_REDEFINITION_SCHEMA_CHANGED);
ERROR_CASE(INVALID_TYPESTATE);
ERROR_CASE(UNSUPPORTED_REDEFINITION_HIERARCHY_CHANGED);
ERROR_CASE(UNSUPPORTED_REDEFINITION_METHOD_DELETED);
ERROR_CASE(UNSUPPORTED_VERSION);
ERROR_CASE(NAMES_DONT_MATCH);
ERROR_CASE(UNSUPPORTED_REDEFINITION_CLASS_MODIFIERS_CHANGED);
ERROR_CASE(UNSUPPORTED_REDEFINITION_METHOD_MODIFIERS_CHANGED);
ERROR_CASE(UNMODIFIABLE_CLASS);
ERROR_CASE(NOT_AVAILABLE);
ERROR_CASE(MUST_POSSESS_CAPABILITY);
ERROR_CASE(NULL_POINTER);
ERROR_CASE(ABSENT_INFORMATION);
ERROR_CASE(INVALID_EVENT_TYPE);
ERROR_CASE(ILLEGAL_ARGUMENT);
ERROR_CASE(NATIVE_METHOD);
ERROR_CASE(CLASS_LOADER_UNSUPPORTED);
ERROR_CASE(OUT_OF_MEMORY);
ERROR_CASE(ACCESS_DENIED);
ERROR_CASE(WRONG_PHASE);
ERROR_CASE(INTERNAL);
ERROR_CASE(UNATTACHED_THREAD);
ERROR_CASE(INVALID_ENVIRONMENT);
#undef ERROR_CASE
}
return ERR(ILLEGAL_ARGUMENT);
}
static jvmtiError SetVerboseFlag(jvmtiEnv* env,
jvmtiVerboseFlag flag,
jboolean value) {
ENSURE_VALID_ENV(env);
if (flag == jvmtiVerboseFlag::JVMTI_VERBOSE_OTHER) {
// OTHER is special, as it's 0, so can't do a bit check.
bool val = (value == JNI_TRUE) ? true : false;
art::gLogVerbosity.collector = val;
art::gLogVerbosity.compiler = val;
art::gLogVerbosity.deopt = val;
art::gLogVerbosity.heap = val;
art::gLogVerbosity.jdwp = val;
art::gLogVerbosity.jit = val;
art::gLogVerbosity.monitor = val;
art::gLogVerbosity.oat = val;
art::gLogVerbosity.profiler = val;
art::gLogVerbosity.signals = val;
art::gLogVerbosity.simulator = val;
art::gLogVerbosity.startup = val;
art::gLogVerbosity.third_party_jni = val;
art::gLogVerbosity.threads = val;
art::gLogVerbosity.verifier = val;
// Do not set verifier-debug.
art::gLogVerbosity.image = val;
// Note: can't switch systrace_lock_logging. That requires changing entrypoints.
art::gLogVerbosity.agents = val;
} else {
// Spec isn't clear whether "flag" is a mask or supposed to be single. We implement the mask
// semantics.
constexpr std::underlying_type<jvmtiVerboseFlag>::type kMask =
jvmtiVerboseFlag::JVMTI_VERBOSE_GC |
jvmtiVerboseFlag::JVMTI_VERBOSE_CLASS |
jvmtiVerboseFlag::JVMTI_VERBOSE_JNI;
if ((flag & ~kMask) != 0) {
return ERR(ILLEGAL_ARGUMENT);
}
bool val = (value == JNI_TRUE) ? true : false;
if ((flag & jvmtiVerboseFlag::JVMTI_VERBOSE_GC) != 0) {
art::gLogVerbosity.gc = val;
}
if ((flag & jvmtiVerboseFlag::JVMTI_VERBOSE_CLASS) != 0) {
art::gLogVerbosity.class_linker = val;
}
if ((flag & jvmtiVerboseFlag::JVMTI_VERBOSE_JNI) != 0) {
art::gLogVerbosity.jni = val;
}
}
return ERR(NONE);
}
static jvmtiError GetJLocationFormat(jvmtiEnv* env, jvmtiJlocationFormat* format_ptr) {
ENSURE_VALID_ENV(env);
// Report BCI as jlocation format. We report dex bytecode indices.
if (format_ptr == nullptr) {
return ERR(NULL_POINTER);
}
*format_ptr = jvmtiJlocationFormat::JVMTI_JLOCATION_JVMBCI;
return ERR(NONE);
}
};
static bool IsJvmtiVersion(jint version) {
return version == JVMTI_VERSION_1 ||
version == JVMTI_VERSION_1_0 ||
version == JVMTI_VERSION_1_1 ||
version == JVMTI_VERSION_1_2 ||
version == JVMTI_VERSION;
}
extern const jvmtiInterface_1 gJvmtiInterface;
ArtJvmTiEnv::ArtJvmTiEnv(art::JavaVMExt* runtime, EventHandler* event_handler, jint version)
: art_vm(runtime),
local_data(nullptr),
ti_version(version),
capabilities(),
event_info_mutex_("jvmtiEnv_EventInfoMutex"),
last_error_mutex_("jvmtiEnv_LastErrorMutex", art::LockLevel::kGenericBottomLock) {
object_tag_table = std::make_unique<ObjectTagTable>(event_handler, this);
functions = &gJvmtiInterface;
}
// Creates a jvmtiEnv and returns it with the art::ti::Env that is associated with it. new_art_ti
// is a pointer to the uninitialized memory for an art::ti::Env.
static void CreateArtJvmTiEnv(art::JavaVMExt* vm, jint version, /*out*/void** new_jvmtiEnv) {
struct ArtJvmTiEnv* env = new ArtJvmTiEnv(vm, gEventHandler, version);
*new_jvmtiEnv = env;
gEventHandler->RegisterArtJvmTiEnv(env);
art::Runtime::Current()->AddSystemWeakHolder(
ArtJvmTiEnv::AsArtJvmTiEnv(env)->object_tag_table.get());
}
// A hook that the runtime uses to allow plugins to handle GetEnv calls. It returns true and
// places the return value in 'env' if this library can handle the GetEnv request. Otherwise
// returns false and does not modify the 'env' pointer.
static jint GetEnvHandler(art::JavaVMExt* vm, /*out*/void** env, jint version) {
// JavaDebuggable will either be set by the runtime as it is starting up or the plugin if it's
// loaded early enough. If this is false we cannot guarantee conformance to all JVMTI behaviors
// due to optimizations. We will only allow agents to get ArtTiEnvs using the kArtTiVersion.
if (IsFullJvmtiAvailable() && IsJvmtiVersion(version)) {
CreateArtJvmTiEnv(vm, JVMTI_VERSION, env);
return JNI_OK;
} else if (version == kArtTiVersion) {
CreateArtJvmTiEnv(vm, kArtTiVersion, env);
return JNI_OK;
} else {
printf("version 0x%x is not valid!", version);
return JNI_EVERSION;
}
}
// The plugin initialization function. This adds the jvmti environment.
extern "C" bool ArtPlugin_Initialize() {
art::Runtime* runtime = art::Runtime::Current();
gDeoptManager = new DeoptManager;
gEventHandler = new EventHandler;
gDeoptManager->Setup();
if (runtime->IsStarted()) {
PhaseUtil::SetToLive();
} else {
PhaseUtil::SetToOnLoad();
}
PhaseUtil::Register(gEventHandler);
ThreadUtil::Register(gEventHandler);
ClassUtil::Register(gEventHandler);
DumpUtil::Register(gEventHandler);
MethodUtil::Register(gEventHandler);
SearchUtil::Register();
HeapUtil::Register();
Transformer::Setup();
{
// Make sure we can deopt anything we need to.
art::ScopedSuspendAll ssa(__FUNCTION__);
gDeoptManager->FinishSetup();
}
runtime->GetJavaVM()->AddEnvironmentHook(GetEnvHandler);
return true;
}
extern "C" bool ArtPlugin_Deinitialize() {
gEventHandler->Shutdown();
gDeoptManager->Shutdown();
PhaseUtil::Unregister();
ThreadUtil::Unregister();
ClassUtil::Unregister();
DumpUtil::Unregister();
MethodUtil::Unregister();
SearchUtil::Unregister();
HeapUtil::Unregister();
// TODO It would be good to delete the gEventHandler and gDeoptManager here but we cannot since
// daemon threads might be suspended and we want to make sure that even if they wake up briefly
// they won't hit deallocated memory. By this point none of the functions will do anything since
// they have already shutdown.
return true;
}
// The actual struct holding all of the entrypoints into the jvmti interface.
const jvmtiInterface_1 gJvmtiInterface = {
nullptr, // reserved1
JvmtiFunctions::SetEventNotificationMode,
nullptr, // reserved3
JvmtiFunctions::GetAllThreads,
JvmtiFunctions::SuspendThread,
JvmtiFunctions::ResumeThread,
JvmtiFunctions::StopThread,
JvmtiFunctions::InterruptThread,
JvmtiFunctions::GetThreadInfo,
JvmtiFunctions::GetOwnedMonitorInfo, // 10
JvmtiFunctions::GetCurrentContendedMonitor,
JvmtiFunctions::RunAgentThread,
JvmtiFunctions::GetTopThreadGroups,
JvmtiFunctions::GetThreadGroupInfo,
JvmtiFunctions::GetThreadGroupChildren,
JvmtiFunctions::GetFrameCount,
JvmtiFunctions::GetThreadState,
JvmtiFunctions::GetCurrentThread,
JvmtiFunctions::GetFrameLocation,
JvmtiFunctions::NotifyFramePop, // 20
JvmtiFunctions::GetLocalObject,
JvmtiFunctions::GetLocalInt,
JvmtiFunctions::GetLocalLong,
JvmtiFunctions::GetLocalFloat,
JvmtiFunctions::GetLocalDouble,
JvmtiFunctions::SetLocalObject,
JvmtiFunctions::SetLocalInt,
JvmtiFunctions::SetLocalLong,
JvmtiFunctions::SetLocalFloat,
JvmtiFunctions::SetLocalDouble, // 30
JvmtiFunctions::CreateRawMonitor,
JvmtiFunctions::DestroyRawMonitor,
JvmtiFunctions::RawMonitorEnter,
JvmtiFunctions::RawMonitorExit,
JvmtiFunctions::RawMonitorWait,
JvmtiFunctions::RawMonitorNotify,
JvmtiFunctions::RawMonitorNotifyAll,
JvmtiFunctions::SetBreakpoint,
JvmtiFunctions::ClearBreakpoint,
nullptr, // reserved40
JvmtiFunctions::SetFieldAccessWatch,
JvmtiFunctions::ClearFieldAccessWatch,
JvmtiFunctions::SetFieldModificationWatch,
JvmtiFunctions::ClearFieldModificationWatch,
JvmtiFunctions::IsModifiableClass,
JvmtiFunctions::Allocate,
JvmtiFunctions::Deallocate,
JvmtiFunctions::GetClassSignature,
JvmtiFunctions::GetClassStatus,
JvmtiFunctions::GetSourceFileName, // 50
JvmtiFunctions::GetClassModifiers,
JvmtiFunctions::GetClassMethods,
JvmtiFunctions::GetClassFields,
JvmtiFunctions::GetImplementedInterfaces,
JvmtiFunctions::IsInterface,
JvmtiFunctions::IsArrayClass,
JvmtiFunctions::GetClassLoader,
JvmtiFunctions::GetObjectHashCode,
JvmtiFunctions::GetObjectMonitorUsage,
JvmtiFunctions::GetFieldName, // 60
JvmtiFunctions::GetFieldDeclaringClass,
JvmtiFunctions::GetFieldModifiers,
JvmtiFunctions::IsFieldSynthetic,
JvmtiFunctions::GetMethodName,
JvmtiFunctions::GetMethodDeclaringClass,
JvmtiFunctions::GetMethodModifiers,
nullptr, // reserved67
JvmtiFunctions::GetMaxLocals,
JvmtiFunctions::GetArgumentsSize,
JvmtiFunctions::GetLineNumberTable, // 70
JvmtiFunctions::GetMethodLocation,
JvmtiFunctions::GetLocalVariableTable,
JvmtiFunctions::SetNativeMethodPrefix,
JvmtiFunctions::SetNativeMethodPrefixes,
JvmtiFunctions::GetBytecodes,
JvmtiFunctions::IsMethodNative,
JvmtiFunctions::IsMethodSynthetic,
JvmtiFunctions::GetLoadedClasses,
JvmtiFunctions::GetClassLoaderClasses,
JvmtiFunctions::PopFrame, // 80
JvmtiFunctions::ForceEarlyReturnObject,
JvmtiFunctions::ForceEarlyReturnInt,
JvmtiFunctions::ForceEarlyReturnLong,
JvmtiFunctions::ForceEarlyReturnFloat,
JvmtiFunctions::ForceEarlyReturnDouble,
JvmtiFunctions::ForceEarlyReturnVoid,
JvmtiFunctions::RedefineClasses,
JvmtiFunctions::GetVersionNumber,
JvmtiFunctions::GetCapabilities,
JvmtiFunctions::GetSourceDebugExtension, // 90
JvmtiFunctions::IsMethodObsolete,
JvmtiFunctions::SuspendThreadList,
JvmtiFunctions::ResumeThreadList,
nullptr, // reserved94
nullptr, // reserved95
nullptr, // reserved96
nullptr, // reserved97
nullptr, // reserved98
nullptr, // reserved99
JvmtiFunctions::GetAllStackTraces, // 100
JvmtiFunctions::GetThreadListStackTraces,
JvmtiFunctions::GetThreadLocalStorage,
JvmtiFunctions::SetThreadLocalStorage,
JvmtiFunctions::GetStackTrace,
nullptr, // reserved105
JvmtiFunctions::GetTag,
JvmtiFunctions::SetTag,
JvmtiFunctions::ForceGarbageCollection,
JvmtiFunctions::IterateOverObjectsReachableFromObject,
JvmtiFunctions::IterateOverReachableObjects, // 110
JvmtiFunctions::IterateOverHeap,
JvmtiFunctions::IterateOverInstancesOfClass,
nullptr, // reserved113
JvmtiFunctions::GetObjectsWithTags,
JvmtiFunctions::FollowReferences,
JvmtiFunctions::IterateThroughHeap,
nullptr, // reserved117
nullptr, // reserved118
nullptr, // reserved119
JvmtiFunctions::SetJNIFunctionTable, // 120
JvmtiFunctions::GetJNIFunctionTable,
JvmtiFunctions::SetEventCallbacks,
JvmtiFunctions::GenerateEvents,
JvmtiFunctions::GetExtensionFunctions,
JvmtiFunctions::GetExtensionEvents,
JvmtiFunctions::SetExtensionEventCallback,
JvmtiFunctions::DisposeEnvironment,
JvmtiFunctions::GetErrorName,
JvmtiFunctions::GetJLocationFormat,
JvmtiFunctions::GetSystemProperties, // 130
JvmtiFunctions::GetSystemProperty,
JvmtiFunctions::SetSystemProperty,
JvmtiFunctions::GetPhase,
JvmtiFunctions::GetCurrentThreadCpuTimerInfo,
JvmtiFunctions::GetCurrentThreadCpuTime,
JvmtiFunctions::GetThreadCpuTimerInfo,
JvmtiFunctions::GetThreadCpuTime,
JvmtiFunctions::GetTimerInfo,
JvmtiFunctions::GetTime,
JvmtiFunctions::GetPotentialCapabilities, // 140
nullptr, // reserved141
JvmtiFunctions::AddCapabilities,
JvmtiFunctions::RelinquishCapabilities,
JvmtiFunctions::GetAvailableProcessors,
JvmtiFunctions::GetClassVersionNumbers,
JvmtiFunctions::GetConstantPool,
JvmtiFunctions::GetEnvironmentLocalStorage,
JvmtiFunctions::SetEnvironmentLocalStorage,
JvmtiFunctions::AddToBootstrapClassLoaderSearch,
JvmtiFunctions::SetVerboseFlag, // 150
JvmtiFunctions::AddToSystemClassLoaderSearch,
JvmtiFunctions::RetransformClasses,
JvmtiFunctions::GetOwnedMonitorStackDepthInfo,
JvmtiFunctions::GetObjectSize,
JvmtiFunctions::GetLocalInstance,
};
}; // namespace openjdkjvmti