| /* |
| * Copyright (c) 2003, 2023, 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. |
| * |
| * 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 "precompiled.hpp" |
| #include "classfile/classLoaderExt.hpp" |
| #include "classfile/javaClasses.inline.hpp" |
| #include "classfile/stringTable.hpp" |
| #include "classfile/modules.hpp" |
| #include "classfile/systemDictionary.hpp" |
| #include "classfile/vmClasses.hpp" |
| #include "classfile/vmSymbols.hpp" |
| #include "gc/shared/collectedHeap.hpp" |
| #include "interpreter/bytecodeStream.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "jfr/jfrEvents.hpp" |
| #include "jvmtifiles/jvmtiEnv.hpp" |
| #include "logging/log.hpp" |
| #include "logging/logConfiguration.hpp" |
| #include "memory/allocation.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "memory/universe.hpp" |
| #include "oops/instanceKlass.hpp" |
| #include "oops/klass.inline.hpp" |
| #include "oops/objArrayOop.inline.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "prims/jniCheck.hpp" |
| #include "prims/jvm_misc.hpp" |
| #include "prims/jvmtiAgentThread.hpp" |
| #include "prims/jvmtiClassFileReconstituter.hpp" |
| #include "prims/jvmtiCodeBlobEvents.hpp" |
| #include "prims/jvmtiExtensions.hpp" |
| #include "prims/jvmtiGetLoadedClasses.hpp" |
| #include "prims/jvmtiImpl.hpp" |
| #include "prims/jvmtiManageCapabilities.hpp" |
| #include "prims/jvmtiRawMonitor.hpp" |
| #include "prims/jvmtiRedefineClasses.hpp" |
| #include "prims/jvmtiTagMap.hpp" |
| #include "prims/jvmtiThreadState.inline.hpp" |
| #include "prims/jvmtiUtil.hpp" |
| #include "runtime/arguments.hpp" |
| #include "runtime/deoptimization.hpp" |
| #include "runtime/fieldDescriptor.inline.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/interfaceSupport.inline.hpp" |
| #include "runtime/javaCalls.hpp" |
| #include "runtime/javaThread.inline.hpp" |
| #include "runtime/jfieldIDWorkaround.hpp" |
| #include "runtime/jniHandles.inline.hpp" |
| #include "runtime/objectMonitor.inline.hpp" |
| #include "runtime/os.hpp" |
| #include "runtime/osThread.hpp" |
| #include "runtime/reflectionUtils.hpp" |
| #include "runtime/signature.hpp" |
| #include "runtime/threadHeapSampler.hpp" |
| #include "runtime/threads.hpp" |
| #include "runtime/threadSMR.hpp" |
| #include "runtime/timerTrace.hpp" |
| #include "runtime/vframe.inline.hpp" |
| #include "runtime/vmThread.hpp" |
| #include "services/threadService.hpp" |
| #include "utilities/exceptions.hpp" |
| #include "utilities/preserveException.hpp" |
| #include "utilities/utf8.hpp" |
| |
| |
| #define FIXLATER 0 // REMOVE this when completed. |
| |
| // FIXLATER: hook into JvmtiTrace |
| #define TraceJVMTICalls false |
| |
| JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) { |
| } |
| |
| JvmtiEnv::~JvmtiEnv() { |
| } |
| |
| JvmtiEnv* |
| JvmtiEnv::create_a_jvmti(jint version) { |
| return new JvmtiEnv(version); |
| } |
| |
| // VM operation class to copy jni function table at safepoint. |
| // More than one java threads or jvmti agents may be reading/ |
| // modifying jni function tables. To reduce the risk of bad |
| // interaction b/w these threads it is copied at safepoint. |
| class VM_JNIFunctionTableCopier : public VM_Operation { |
| private: |
| const struct JNINativeInterface_ *_function_table; |
| public: |
| VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) { |
| _function_table = func_tbl; |
| }; |
| |
| VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; } |
| void doit() { |
| copy_jni_function_table(_function_table); |
| }; |
| }; |
| |
| // |
| // Do not change the "prefix" marker below, everything above it is copied |
| // unchanged into the filled stub, everything below is controlled by the |
| // stub filler (only method bodies are carried forward, and then only for |
| // functionality still in the spec). |
| // |
| // end file prefix |
| |
| // |
| // Memory Management functions |
| // |
| |
| // mem_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) { |
| return allocate(size, mem_ptr); |
| } /* end Allocate */ |
| |
| |
| // mem - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::Deallocate(unsigned char* mem) { |
| return deallocate(mem); |
| } /* end Deallocate */ |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // data - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::SetThreadLocalStorage(jthread thread, const void* data) { |
| JavaThread* current = JavaThread::current(); |
| JvmtiThreadState* state = nullptr; |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| if (thread == nullptr) { |
| java_thread = current; |
| state = java_thread->jvmti_thread_state(); |
| } else { |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| state = java_lang_Thread::jvmti_thread_state(thread_obj); |
| } |
| if (state == nullptr) { |
| if (data == nullptr) { |
| // leaving state unset same as data set to null |
| return JVMTI_ERROR_NONE; |
| } |
| // otherwise, create the state |
| HandleMark hm(current); |
| Handle thread_handle(current, thread_obj); |
| state = JvmtiThreadState::state_for(java_thread, thread_handle); |
| if (state == nullptr) { |
| return JVMTI_ERROR_THREAD_NOT_ALIVE; |
| } |
| } |
| state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data); |
| return JVMTI_ERROR_NONE; |
| } /* end SetThreadLocalStorage */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // data_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| if (thread == nullptr) { |
| JvmtiThreadState* state = current_thread->jvmti_thread_state(); |
| *data_ptr = (state == nullptr) ? nullptr : |
| state->env_thread_state(this)->get_agent_thread_local_storage_data(); |
| } else { |
| // jvmti_GetThreadLocalStorage is "in native" and doesn't transition |
| // the thread to _thread_in_vm. However, when the TLS for a thread |
| // other than the current thread is required we need to transition |
| // from native so as to resolve the jthread. |
| |
| MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, current_thread)); |
| ThreadInVMfromNative __tiv(current_thread); |
| VM_ENTRY_BASE(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread) |
| debug_only(VMNativeEntryWrapper __vew;) |
| |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| HandleMark hm(current_thread); |
| Handle thread_handle(current_thread, thread_obj); |
| JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread, thread_handle); |
| *data_ptr = (state == nullptr) ? nullptr : |
| state->env_thread_state(this)->get_agent_thread_local_storage_data(); |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end GetThreadLocalStorage */ |
| |
| // |
| // Module functions |
| // |
| |
| // module_count_ptr - pre-checked for null |
| // modules_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetAllModules(jint* module_count_ptr, jobject** modules_ptr) { |
| JvmtiModuleClosure jmc; |
| |
| return jmc.get_all_modules(this, module_count_ptr, modules_ptr); |
| } /* end GetAllModules */ |
| |
| |
| // class_loader - null is a valid value, must be pre-checked |
| // package_name - pre-checked for null |
| // module_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetNamedModule(jobject class_loader, const char* package_name, jobject* module_ptr) { |
| JavaThread* THREAD = JavaThread::current(); // For exception macros. |
| ResourceMark rm(THREAD); |
| |
| Handle h_loader (THREAD, JNIHandles::resolve(class_loader)); |
| // Check that loader is a subclass of java.lang.ClassLoader. |
| if (h_loader.not_null() && !java_lang_ClassLoader::is_subclass(h_loader->klass())) { |
| return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
| } |
| oop module = Modules::get_named_module(h_loader, package_name); |
| *module_ptr = module != nullptr ? JNIHandles::make_local(THREAD, module) : nullptr; |
| return JVMTI_ERROR_NONE; |
| } /* end GetNamedModule */ |
| |
| |
| // module - pre-checked for null |
| // to_module - pre-checked for null |
| jvmtiError |
| JvmtiEnv::AddModuleReads(jobject module, jobject to_module) { |
| JavaThread* THREAD = JavaThread::current(); // For exception macros. |
| |
| // check module |
| Handle h_module(THREAD, JNIHandles::resolve(module)); |
| if (!java_lang_Module::is_instance(h_module())) { |
| return JVMTI_ERROR_INVALID_MODULE; |
| } |
| // check to_module |
| Handle h_to_module(THREAD, JNIHandles::resolve(to_module)); |
| if (!java_lang_Module::is_instance(h_to_module())) { |
| return JVMTI_ERROR_INVALID_MODULE; |
| } |
| return JvmtiExport::add_module_reads(h_module, h_to_module, THREAD); |
| } /* end AddModuleReads */ |
| |
| |
| // module - pre-checked for null |
| // pkg_name - pre-checked for null |
| // to_module - pre-checked for null |
| jvmtiError |
| JvmtiEnv::AddModuleExports(jobject module, const char* pkg_name, jobject to_module) { |
| JavaThread* THREAD = JavaThread::current(); // For exception macros. |
| Handle h_pkg = java_lang_String::create_from_str(pkg_name, THREAD); |
| |
| // check module |
| Handle h_module(THREAD, JNIHandles::resolve(module)); |
| if (!java_lang_Module::is_instance(h_module())) { |
| return JVMTI_ERROR_INVALID_MODULE; |
| } |
| // check to_module |
| Handle h_to_module(THREAD, JNIHandles::resolve(to_module)); |
| if (!java_lang_Module::is_instance(h_to_module())) { |
| return JVMTI_ERROR_INVALID_MODULE; |
| } |
| return JvmtiExport::add_module_exports(h_module, h_pkg, h_to_module, THREAD); |
| } /* end AddModuleExports */ |
| |
| |
| // module - pre-checked for null |
| // pkg_name - pre-checked for null |
| // to_module - pre-checked for null |
| jvmtiError |
| JvmtiEnv::AddModuleOpens(jobject module, const char* pkg_name, jobject to_module) { |
| JavaThread* THREAD = JavaThread::current(); // For exception macros. |
| Handle h_pkg = java_lang_String::create_from_str(pkg_name, THREAD); |
| |
| // check module |
| Handle h_module(THREAD, JNIHandles::resolve(module)); |
| if (!java_lang_Module::is_instance(h_module())) { |
| return JVMTI_ERROR_INVALID_MODULE; |
| } |
| // check to_module |
| Handle h_to_module(THREAD, JNIHandles::resolve(to_module)); |
| if (!java_lang_Module::is_instance(h_to_module())) { |
| return JVMTI_ERROR_INVALID_MODULE; |
| } |
| return JvmtiExport::add_module_opens(h_module, h_pkg, h_to_module, THREAD); |
| } /* end AddModuleOpens */ |
| |
| |
| // module - pre-checked for null |
| // service - pre-checked for null |
| jvmtiError |
| JvmtiEnv::AddModuleUses(jobject module, jclass service) { |
| JavaThread* THREAD = JavaThread::current(); // For exception macros. |
| |
| // check module |
| Handle h_module(THREAD, JNIHandles::resolve(module)); |
| if (!java_lang_Module::is_instance(h_module())) { |
| return JVMTI_ERROR_INVALID_MODULE; |
| } |
| // check service |
| Handle h_service(THREAD, JNIHandles::resolve_external_guard(service)); |
| if (!java_lang_Class::is_instance(h_service()) || |
| java_lang_Class::is_primitive(h_service())) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| return JvmtiExport::add_module_uses(h_module, h_service, THREAD); |
| } /* end AddModuleUses */ |
| |
| |
| // module - pre-checked for null |
| // service - pre-checked for null |
| // impl_class - pre-checked for null |
| jvmtiError |
| JvmtiEnv::AddModuleProvides(jobject module, jclass service, jclass impl_class) { |
| JavaThread* THREAD = JavaThread::current(); // For exception macros. |
| |
| // check module |
| Handle h_module(THREAD, JNIHandles::resolve(module)); |
| if (!java_lang_Module::is_instance(h_module())) { |
| return JVMTI_ERROR_INVALID_MODULE; |
| } |
| // check service |
| Handle h_service(THREAD, JNIHandles::resolve_external_guard(service)); |
| if (!java_lang_Class::is_instance(h_service()) || |
| java_lang_Class::is_primitive(h_service())) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| // check impl_class |
| Handle h_impl_class(THREAD, JNIHandles::resolve_external_guard(impl_class)); |
| if (!java_lang_Class::is_instance(h_impl_class()) || |
| java_lang_Class::is_primitive(h_impl_class())) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| return JvmtiExport::add_module_provides(h_module, h_service, h_impl_class, THREAD); |
| } /* end AddModuleProvides */ |
| |
| // module - pre-checked for null |
| // is_modifiable_class_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::IsModifiableModule(jobject module, jboolean* is_modifiable_module_ptr) { |
| JavaThread* current = JavaThread::current(); |
| |
| // check module |
| Handle h_module(current, JNIHandles::resolve(module)); |
| if (!java_lang_Module::is_instance(h_module())) { |
| return JVMTI_ERROR_INVALID_MODULE; |
| } |
| |
| *is_modifiable_module_ptr = JNI_TRUE; |
| return JVMTI_ERROR_NONE; |
| } /* end IsModifiableModule */ |
| |
| |
| // |
| // Class functions |
| // |
| |
| // class_count_ptr - pre-checked for null |
| // classes_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) { |
| return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr); |
| } /* end GetLoadedClasses */ |
| |
| |
| // initiating_loader - null is a valid value, must be checked |
| // class_count_ptr - pre-checked for null |
| // classes_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) { |
| return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader, |
| class_count_ptr, classes_ptr); |
| } /* end GetClassLoaderClasses */ |
| |
| // k_mirror - may be primitive, this must be checked |
| // is_modifiable_class_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) { |
| *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)? |
| JNI_TRUE : JNI_FALSE; |
| return JVMTI_ERROR_NONE; |
| } /* end IsModifiableClass */ |
| |
| // class_count - pre-checked to be greater than or equal to 0 |
| // classes - pre-checked for null |
| jvmtiError |
| JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) { |
| //TODO: add locking |
| |
| int index; |
| JavaThread* current_thread = JavaThread::current(); |
| ResourceMark rm(current_thread); |
| |
| jvmtiClassDefinition* class_definitions = |
| NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count); |
| NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY); |
| |
| for (index = 0; index < class_count; index++) { |
| HandleMark hm(current_thread); |
| |
| jclass jcls = classes[index]; |
| oop k_mirror = JNIHandles::resolve_external_guard(jcls); |
| if (k_mirror == nullptr) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| if (!k_mirror->is_a(vmClasses::Class_klass())) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| |
| if (!VM_RedefineClasses::is_modifiable_class(k_mirror)) { |
| return JVMTI_ERROR_UNMODIFIABLE_CLASS; |
| } |
| |
| Klass* klass = java_lang_Class::as_Klass(k_mirror); |
| |
| jint status = klass->jvmti_class_status(); |
| if (status & (JVMTI_CLASS_STATUS_ERROR)) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| |
| InstanceKlass* ik = InstanceKlass::cast(klass); |
| if (ik->get_cached_class_file_bytes() == nullptr) { |
| // Not cached, we need to reconstitute the class file from the |
| // VM representation. We don't attach the reconstituted class |
| // bytes to the InstanceKlass here because they have not been |
| // validated and we're not at a safepoint. |
| JvmtiClassFileReconstituter reconstituter(ik); |
| if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
| return reconstituter.get_error(); |
| } |
| |
| class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size(); |
| class_definitions[index].class_bytes = (unsigned char*) |
| reconstituter.class_file_bytes(); |
| } else { |
| // it is cached, get it from the cache |
| class_definitions[index].class_byte_count = ik->get_cached_class_file_len(); |
| class_definitions[index].class_bytes = ik->get_cached_class_file_bytes(); |
| } |
| class_definitions[index].klass = jcls; |
| } |
| EventRetransformClasses event; |
| VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform); |
| VMThread::execute(&op); |
| jvmtiError error = op.check_error(); |
| if (error == JVMTI_ERROR_NONE) { |
| event.set_classCount(class_count); |
| event.set_redefinitionId(op.id()); |
| event.commit(); |
| } |
| return error; |
| } /* end RetransformClasses */ |
| |
| |
| // class_count - pre-checked to be greater than or equal to 0 |
| // class_definitions - pre-checked for null |
| jvmtiError |
| JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) { |
| //TODO: add locking |
| EventRedefineClasses event; |
| VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine); |
| VMThread::execute(&op); |
| jvmtiError error = op.check_error(); |
| if (error == JVMTI_ERROR_NONE) { |
| event.set_classCount(class_count); |
| event.set_redefinitionId(op.id()); |
| event.commit(); |
| } |
| return error; |
| } /* end RedefineClasses */ |
| |
| |
| // |
| // Object functions |
| // |
| |
| // size_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) { |
| oop mirror = JNIHandles::resolve_external_guard(object); |
| NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); |
| *size_ptr = (jlong)mirror->size() * wordSize; |
| return JVMTI_ERROR_NONE; |
| } /* end GetObjectSize */ |
| |
| // |
| // Method functions |
| // |
| |
| // prefix - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::SetNativeMethodPrefix(const char* prefix) { |
| return prefix == nullptr? |
| SetNativeMethodPrefixes(0, nullptr) : |
| SetNativeMethodPrefixes(1, (char**)&prefix); |
| } /* end SetNativeMethodPrefix */ |
| |
| |
| // prefix_count - pre-checked to be greater than or equal to 0 |
| // prefixes - pre-checked for null |
| jvmtiError |
| JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) { |
| // Have to grab JVMTI thread state lock to be sure that some thread |
| // isn't accessing the prefixes at the same time we are setting them. |
| // No locks during VM bring-up. |
| if (Threads::number_of_threads() == 0) { |
| return set_native_method_prefixes(prefix_count, prefixes); |
| } else { |
| MutexLocker mu(JvmtiThreadState_lock); |
| return set_native_method_prefixes(prefix_count, prefixes); |
| } |
| } /* end SetNativeMethodPrefixes */ |
| |
| // |
| // Event Management functions |
| // |
| |
| // callbacks - null is a valid value, must be checked |
| // size_of_callbacks - pre-checked to be greater than or equal to 0 |
| jvmtiError |
| JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) { |
| JvmtiVTMSTransitionDisabler disabler; |
| JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks); |
| return JVMTI_ERROR_NONE; |
| } /* end SetEventCallbacks */ |
| |
| |
| // event_thread - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) { |
| bool enabled = (mode == JVMTI_ENABLE); |
| |
| // event_type must be valid |
| if (!JvmtiEventController::is_valid_event_type(event_type)) { |
| return JVMTI_ERROR_INVALID_EVENT_TYPE; |
| } |
| |
| // assure that needed capabilities are present |
| if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) { |
| return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
| } |
| |
| if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) { |
| record_class_file_load_hook_enabled(); |
| } |
| JvmtiVTMSTransitionDisabler disabler; |
| |
| if (event_thread == nullptr) { |
| // Can be called at Agent_OnLoad() time with event_thread == nullptr |
| // when Thread::current() does not work yet so we cannot create a |
| // ThreadsListHandle that is common to both thread-specific and |
| // global code paths. |
| |
| JvmtiEventController::set_user_enabled(this, nullptr, (oop) nullptr, event_type, enabled); |
| } else { |
| // We have a specified event_thread. |
| ThreadsListHandle tlh; |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), event_thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| // global events cannot be controlled at thread level. |
| if (JvmtiEventController::is_global_event(event_type)) { |
| return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
| } |
| |
| JvmtiEventController::set_user_enabled(this, java_thread, thread_obj, event_type, enabled); |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end SetEventNotificationMode */ |
| |
| // |
| // Capability functions |
| // |
| |
| // capabilities_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) { |
| JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(), |
| get_prohibited_capabilities(), |
| capabilities_ptr); |
| return JVMTI_ERROR_NONE; |
| } /* end GetPotentialCapabilities */ |
| |
| |
| // capabilities_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) { |
| return JvmtiManageCapabilities::add_capabilities(get_capabilities(), |
| get_prohibited_capabilities(), |
| capabilities_ptr, |
| get_capabilities()); |
| } /* end AddCapabilities */ |
| |
| |
| // capabilities_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) { |
| JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities()); |
| return JVMTI_ERROR_NONE; |
| } /* end RelinquishCapabilities */ |
| |
| |
| // capabilities_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) { |
| JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr); |
| return JVMTI_ERROR_NONE; |
| } /* end GetCapabilities */ |
| |
| // |
| // Class Loader Search functions |
| // |
| |
| // segment - pre-checked for null |
| jvmtiError |
| JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) { |
| jvmtiPhase phase = get_phase(); |
| if (phase == JVMTI_PHASE_ONLOAD) { |
| Arguments::append_sysclasspath(segment); |
| return JVMTI_ERROR_NONE; |
| } else if (use_version_1_0_semantics()) { |
| // This JvmtiEnv requested version 1.0 semantics and this function |
| // is only allowed in the ONLOAD phase in version 1.0 so we need to |
| // return an error here. |
| return JVMTI_ERROR_WRONG_PHASE; |
| } else if (phase == JVMTI_PHASE_LIVE) { |
| // The phase is checked by the wrapper that called this function, |
| // but this thread could be racing with the thread that is |
| // terminating the VM so we check one more time. |
| |
| // create the zip entry |
| ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment, true); |
| if (zip_entry == nullptr) { |
| return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
| } |
| |
| // add the jar file to the bootclasspath |
| log_info(class, load)("opened: %s", zip_entry->name()); |
| #if INCLUDE_CDS |
| ClassLoaderExt::append_boot_classpath(zip_entry); |
| #else |
| ClassLoader::add_to_boot_append_entries(zip_entry); |
| #endif |
| return JVMTI_ERROR_NONE; |
| } else { |
| return JVMTI_ERROR_WRONG_PHASE; |
| } |
| |
| } /* end AddToBootstrapClassLoaderSearch */ |
| |
| |
| // segment - pre-checked for null |
| jvmtiError |
| JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) { |
| jvmtiPhase phase = get_phase(); |
| |
| if (phase == JVMTI_PHASE_ONLOAD) { |
| for (SystemProperty* p = Arguments::system_properties(); p != nullptr; p = p->next()) { |
| if (strcmp("java.class.path", p->key()) == 0) { |
| p->append_value(segment); |
| break; |
| } |
| } |
| return JVMTI_ERROR_NONE; |
| } else if (phase == JVMTI_PHASE_LIVE) { |
| // The phase is checked by the wrapper that called this function, |
| // but this thread could be racing with the thread that is |
| // terminating the VM so we check one more time. |
| JavaThread* THREAD = JavaThread::current(); // For exception macros. |
| HandleMark hm(THREAD); |
| |
| // create the zip entry (which will open the zip file and hence |
| // check that the segment is indeed a zip file). |
| ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment, false); |
| if (zip_entry == nullptr) { |
| return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
| } |
| delete zip_entry; // no longer needed |
| |
| Handle loader(THREAD, SystemDictionary::java_system_loader()); |
| |
| // need the path as java.lang.String |
| Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD); |
| if (HAS_PENDING_EXCEPTION) { |
| CLEAR_PENDING_EXCEPTION; |
| return JVMTI_ERROR_INTERNAL; |
| } |
| |
| // Invoke the appendToClassPathForInstrumentation method - if the method |
| // is not found it means the loader doesn't support adding to the class path |
| // in the live phase. |
| { |
| JavaValue res(T_VOID); |
| JavaCalls::call_special(&res, |
| loader, |
| loader->klass(), |
| vmSymbols::appendToClassPathForInstrumentation_name(), |
| vmSymbols::appendToClassPathForInstrumentation_signature(), |
| path, |
| THREAD); |
| if (HAS_PENDING_EXCEPTION) { |
| Symbol* ex_name = PENDING_EXCEPTION->klass()->name(); |
| CLEAR_PENDING_EXCEPTION; |
| |
| if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) { |
| return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED; |
| } else { |
| return JVMTI_ERROR_INTERNAL; |
| } |
| } |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } else { |
| return JVMTI_ERROR_WRONG_PHASE; |
| } |
| } /* end AddToSystemClassLoaderSearch */ |
| |
| // |
| // General functions |
| // |
| |
| // phase_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) { |
| *phase_ptr = phase(); |
| return JVMTI_ERROR_NONE; |
| } /* end GetPhase */ |
| |
| |
| jvmtiError |
| JvmtiEnv::DisposeEnvironment() { |
| dispose(); |
| return JVMTI_ERROR_NONE; |
| } /* end DisposeEnvironment */ |
| |
| |
| // data - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::SetEnvironmentLocalStorage(const void* data) { |
| set_env_local_storage(data); |
| return JVMTI_ERROR_NONE; |
| } /* end SetEnvironmentLocalStorage */ |
| |
| |
| // data_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) { |
| *data_ptr = (void*)get_env_local_storage(); |
| return JVMTI_ERROR_NONE; |
| } /* end GetEnvironmentLocalStorage */ |
| |
| // version_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetVersionNumber(jint* version_ptr) { |
| *version_ptr = JVMTI_VERSION; |
| return JVMTI_ERROR_NONE; |
| } /* end GetVersionNumber */ |
| |
| |
| // name_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) { |
| if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) { |
| return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
| } |
| const char *name = JvmtiUtil::error_name(error); |
| if (name == nullptr) { |
| return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
| } |
| size_t len = strlen(name) + 1; |
| jvmtiError err = allocate(len, (unsigned char**)name_ptr); |
| if (err == JVMTI_ERROR_NONE) { |
| memcpy(*name_ptr, name, len); |
| } |
| return err; |
| } /* end GetErrorName */ |
| |
| |
| jvmtiError |
| JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) { |
| LogLevelType level = value == 0 ? LogLevel::Off : LogLevel::Info; |
| switch (flag) { |
| case JVMTI_VERBOSE_OTHER: |
| // ignore |
| break; |
| case JVMTI_VERBOSE_CLASS: |
| LogConfiguration::configure_stdout(level, false, LOG_TAGS(class, unload)); |
| LogConfiguration::configure_stdout(level, false, LOG_TAGS(class, load)); |
| break; |
| case JVMTI_VERBOSE_GC: |
| LogConfiguration::configure_stdout(level, true, LOG_TAGS(gc)); |
| break; |
| case JVMTI_VERBOSE_JNI: |
| level = value == 0 ? LogLevel::Off : LogLevel::Debug; |
| LogConfiguration::configure_stdout(level, true, LOG_TAGS(jni, resolve)); |
| break; |
| default: |
| return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
| }; |
| return JVMTI_ERROR_NONE; |
| } /* end SetVerboseFlag */ |
| |
| |
| // format_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) { |
| *format_ptr = JVMTI_JLOCATION_JVMBCI; |
| return JVMTI_ERROR_NONE; |
| } /* end GetJLocationFormat */ |
| |
| // |
| // Thread functions |
| // |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // thread_state_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_oop = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| if (err != JVMTI_ERROR_NONE && err != JVMTI_ERROR_THREAD_NOT_ALIVE) { |
| // We got an error code so we don't have a JavaThread*, but only |
| // return an error from here if the error is not because the thread |
| // is a virtual thread. |
| return err; |
| } |
| |
| if (java_lang_VirtualThread::is_instance(thread_oop)) { |
| *thread_state_ptr = JvmtiEnvBase::get_vthread_state(thread_oop, java_thread); |
| } else { |
| *thread_state_ptr = JvmtiEnvBase::get_thread_state(thread_oop, java_thread); |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end GetThreadState */ |
| |
| |
| // thread_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetCurrentThread(jthread* thread_ptr) { |
| JavaThread* cur_thread = JavaThread::current(); |
| oop thread_oop = get_vthread_or_thread_oop(cur_thread); |
| |
| *thread_ptr = (jthread)JNIHandles::make_local(cur_thread, thread_oop); |
| return JVMTI_ERROR_NONE; |
| } /* end GetCurrentThread */ |
| |
| |
| // threads_count_ptr - pre-checked for null |
| // threads_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) { |
| int nthreads = 0; |
| Handle *thread_objs = nullptr; |
| Thread* current_thread = Thread::current(); |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| |
| // enumerate threads (including agent threads) |
| ThreadsListEnumerator tle(current_thread, true); |
| nthreads = tle.num_threads(); |
| *threads_count_ptr = nthreads; |
| |
| if (nthreads == 0) { |
| *threads_ptr = nullptr; |
| return JVMTI_ERROR_NONE; |
| } |
| |
| thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads); |
| NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY); |
| |
| for (int i = 0; i < nthreads; i++) { |
| thread_objs[i] = Handle(tle.get_threadObj(i)); |
| } |
| |
| jthread *jthreads = new_jthreadArray(nthreads, thread_objs); |
| NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY); |
| |
| *threads_ptr = jthreads; |
| return JVMTI_ERROR_NONE; |
| } /* end GetAllThreads */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| jvmtiError |
| JvmtiEnv::SuspendThread(jthread thread) { |
| JavaThread* current = JavaThread::current(); |
| HandleMark hm(current); |
| Handle self_tobj; |
| |
| jvmtiError err; |
| { |
| JvmtiVTMSTransitionDisabler disabler(true); |
| ThreadsListHandle tlh(current); |
| JavaThread* java_thread = nullptr; |
| oop thread_oop = nullptr; |
| |
| err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| // Do not use JvmtiVTMSTransitionDisabler in context of self suspend to avoid deadlocks. |
| if (java_thread != current) { |
| err = suspend_thread(thread_oop, java_thread, /* single_suspend */ true, nullptr); |
| return err; |
| } |
| // protect thread_oop as a safepoint can be reached in disabler destructor |
| self_tobj = Handle(current, thread_oop); |
| } |
| // Do self suspend for current JavaThread. |
| err = suspend_thread(self_tobj(), current, /* single_suspend */ true, nullptr); |
| return err; |
| } /* end SuspendThread */ |
| |
| |
| // request_count - pre-checked to be greater than or equal to 0 |
| // request_list - pre-checked for null |
| // results - pre-checked for null |
| jvmtiError |
| JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { |
| JavaThread* current = JavaThread::current(); |
| HandleMark hm(current); |
| Handle self_tobj; |
| int self_idx = -1; |
| |
| { |
| JvmtiVTMSTransitionDisabler disabler(true); |
| ThreadsListHandle tlh(current); |
| |
| for (int i = 0; i < request_count; i++) { |
| JavaThread *java_thread = nullptr; |
| oop thread_oop = nullptr; |
| jthread thread = request_list[i]; |
| jvmtiError err = JvmtiExport::cv_external_thread_to_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| |
| if (thread_oop != nullptr && |
| java_lang_VirtualThread::is_instance(thread_oop) && |
| !JvmtiEnvBase::is_vthread_alive(thread_oop)) { |
| err = JVMTI_ERROR_THREAD_NOT_ALIVE; |
| } |
| if (err != JVMTI_ERROR_NONE) { |
| if (thread_oop == nullptr || err != JVMTI_ERROR_INVALID_THREAD) { |
| results[i] = err; |
| continue; |
| } |
| } |
| if (java_thread == current) { |
| self_idx = i; |
| self_tobj = Handle(current, thread_oop); |
| continue; // self suspend after all other suspends |
| } |
| results[i] = suspend_thread(thread_oop, java_thread, /* single_suspend */ true, nullptr); |
| } |
| } |
| // Self suspend after all other suspends if necessary. |
| // Do not use JvmtiVTMSTransitionDisabler in context of self suspend to avoid deadlocks. |
| if (self_tobj() != nullptr) { |
| // there should not be any error for current java_thread |
| results[self_idx] = suspend_thread(self_tobj(), current, /* single_suspend */ true, nullptr); |
| } |
| // per-thread suspend results returned via results parameter |
| return JVMTI_ERROR_NONE; |
| } /* end SuspendThreadList */ |
| |
| |
| jvmtiError |
| JvmtiEnv::SuspendAllVirtualThreads(jint except_count, const jthread* except_list) { |
| if (get_capabilities()->can_support_virtual_threads == 0) { |
| return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
| } |
| JavaThread* current = JavaThread::current(); |
| HandleMark hm(current); |
| Handle self_tobj; |
| |
| { |
| ResourceMark rm(current); |
| JvmtiVTMSTransitionDisabler disabler(true); |
| ThreadsListHandle tlh(current); |
| GrowableArray<jthread>* elist = new GrowableArray<jthread>(except_count); |
| |
| jvmtiError err = JvmtiEnvBase::check_thread_list(except_count, except_list); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| // Collect threads from except_list for which resumed status must be restored (only for VirtualThread case) |
| for (int idx = 0; idx < except_count; idx++) { |
| jthread thread = except_list[idx]; |
| oop thread_oop = JNIHandles::resolve_external_guard(thread); |
| if (java_lang_VirtualThread::is_instance(thread_oop) && !JvmtiVTSuspender::is_vthread_suspended(thread_oop)) { |
| // is not suspended, so its resumed status must be restored |
| elist->append(except_list[idx]); |
| } |
| } |
| |
| for (JavaThreadIteratorWithHandle jtiwh; JavaThread *java_thread = jtiwh.next(); ) { |
| oop vt_oop = java_thread->jvmti_vthread(); |
| if (!java_thread->is_exiting() && |
| !java_thread->is_jvmti_agent_thread() && |
| !java_thread->is_hidden_from_external_view() && |
| vt_oop != nullptr && |
| ((java_lang_VirtualThread::is_instance(vt_oop) && |
| JvmtiEnvBase::is_vthread_alive(vt_oop) && |
| !JvmtiVTSuspender::is_vthread_suspended(vt_oop)) || |
| (vt_oop->is_a(vmClasses::BoundVirtualThread_klass()) && !java_thread->is_suspended())) && |
| !is_in_thread_list(except_count, except_list, vt_oop) |
| ) { |
| if (java_thread == current) { |
| self_tobj = Handle(current, vt_oop); |
| continue; // self suspend after all other suspends |
| } |
| suspend_thread(vt_oop, java_thread, /* single_suspend */ false, nullptr); |
| } |
| } |
| JvmtiVTSuspender::register_all_vthreads_suspend(); |
| |
| // Restore resumed state for threads from except list that were not suspended before. |
| for (int idx = 0; idx < elist->length(); idx++) { |
| jthread thread = elist->at(idx); |
| oop thread_oop = JNIHandles::resolve_external_guard(thread); |
| if (JvmtiVTSuspender::is_vthread_suspended(thread_oop)) { |
| JvmtiVTSuspender::register_vthread_resume(thread_oop); |
| } |
| } |
| } |
| // Self suspend after all other suspends if necessary. |
| // Do not use JvmtiVTMSTransitionDisabler in context of self suspend to avoid deadlocks. |
| if (self_tobj() != nullptr) { |
| suspend_thread(self_tobj(), current, /* single_suspend */ false, nullptr); |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end SuspendAllVirtualThreads */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| jvmtiError |
| JvmtiEnv::ResumeThread(jthread thread) { |
| JvmtiVTMSTransitionDisabler disabler(true); |
| ThreadsListHandle tlh; |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_oop = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| err = resume_thread(thread_oop, java_thread, /* single_resume */ true); |
| return err; |
| } /* end ResumeThread */ |
| |
| |
| // request_count - pre-checked to be greater than or equal to 0 |
| // request_list - pre-checked for null |
| // results - pre-checked for null |
| jvmtiError |
| JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) { |
| oop thread_oop = nullptr; |
| JavaThread* java_thread = nullptr; |
| JvmtiVTMSTransitionDisabler disabler(true); |
| ThreadsListHandle tlh; |
| |
| for (int i = 0; i < request_count; i++) { |
| jthread thread = request_list[i]; |
| jvmtiError err = JvmtiExport::cv_external_thread_to_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| |
| if (thread_oop != nullptr && |
| java_lang_VirtualThread::is_instance(thread_oop) && |
| !JvmtiEnvBase::is_vthread_alive(thread_oop)) { |
| err = JVMTI_ERROR_THREAD_NOT_ALIVE; |
| } |
| if (err != JVMTI_ERROR_NONE) { |
| if (thread_oop == nullptr || err != JVMTI_ERROR_INVALID_THREAD) { |
| results[i] = err; |
| continue; |
| } |
| } |
| results[i] = resume_thread(thread_oop, java_thread, /* single_resume */ true); |
| } |
| // per-thread resume results returned via results parameter |
| return JVMTI_ERROR_NONE; |
| } /* end ResumeThreadList */ |
| |
| |
| jvmtiError |
| JvmtiEnv::ResumeAllVirtualThreads(jint except_count, const jthread* except_list) { |
| if (get_capabilities()->can_support_virtual_threads == 0) { |
| return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
| } |
| jvmtiError err = JvmtiEnvBase::check_thread_list(except_count, except_list); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| ResourceMark rm; |
| JvmtiVTMSTransitionDisabler disabler(true); |
| GrowableArray<jthread>* elist = new GrowableArray<jthread>(except_count); |
| |
| // Collect threads from except_list for which suspended status must be restored (only for VirtualThread case) |
| for (int idx = 0; idx < except_count; idx++) { |
| jthread thread = except_list[idx]; |
| oop thread_oop = JNIHandles::resolve_external_guard(thread); |
| if (java_lang_VirtualThread::is_instance(thread_oop) && JvmtiVTSuspender::is_vthread_suspended(thread_oop)) { |
| // is suspended, so its suspended status must be restored |
| elist->append(except_list[idx]); |
| } |
| } |
| |
| for (JavaThreadIteratorWithHandle jtiwh; JavaThread *java_thread = jtiwh.next(); ) { |
| oop vt_oop = java_thread->jvmti_vthread(); |
| if (!java_thread->is_exiting() && |
| !java_thread->is_jvmti_agent_thread() && |
| !java_thread->is_hidden_from_external_view() && |
| vt_oop != nullptr && |
| ((java_lang_VirtualThread::is_instance(vt_oop) && |
| JvmtiEnvBase::is_vthread_alive(vt_oop) && |
| JvmtiVTSuspender::is_vthread_suspended(vt_oop)) || |
| (vt_oop->is_a(vmClasses::BoundVirtualThread_klass()) && java_thread->is_suspended())) && |
| !is_in_thread_list(except_count, except_list, vt_oop) |
| ) { |
| resume_thread(vt_oop, java_thread, /* single_resume */ false); |
| } |
| } |
| JvmtiVTSuspender::register_all_vthreads_resume(); |
| |
| // Restore suspended state for threads from except list that were suspended before. |
| for (int idx = 0; idx < elist->length(); idx++) { |
| jthread thread = elist->at(idx); |
| oop thread_oop = JNIHandles::resolve_external_guard(thread); |
| if (!JvmtiVTSuspender::is_vthread_suspended(thread_oop)) { |
| JvmtiVTSuspender::register_vthread_suspend(thread_oop); |
| } |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end ResumeAllVirtualThreads */ |
| |
| |
| jvmtiError |
| JvmtiEnv::StopThread(jthread thread, jobject exception) { |
| JavaThread* current_thread = JavaThread::current(); |
| |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| JavaThread* java_thread = nullptr; |
| oop thread_oop = nullptr; |
| |
| NULL_CHECK(thread, JVMTI_ERROR_INVALID_THREAD); |
| |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| |
| bool is_virtual = thread_oop != nullptr && thread_oop->is_a(vmClasses::BaseVirtualThread_klass()); |
| |
| if (is_virtual && !is_JavaThread_current(java_thread, thread_oop)) { |
| if (!is_vthread_suspended(thread_oop, java_thread)) { |
| return JVMTI_ERROR_THREAD_NOT_SUSPENDED; |
| } |
| if (java_thread == nullptr) { // unmounted virtual thread |
| return JVMTI_ERROR_OPAQUE_FRAME; |
| } |
| } |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| oop e = JNIHandles::resolve_external_guard(exception); |
| NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER); |
| |
| JavaThread::send_async_exception(java_thread, e); |
| |
| return JVMTI_ERROR_NONE; |
| |
| } /* end StopThread */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| jvmtiError |
| JvmtiEnv::InterruptThread(jthread thread) { |
| JavaThread* current_thread = JavaThread::current(); |
| HandleMark hm(current_thread); |
| |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| // For virtual threads we have to call into Java to interrupt: |
| Handle obj(current_thread, thread_obj); |
| JavaValue result(T_VOID); |
| JavaCalls::call_virtual(&result, |
| obj, |
| vmClasses::Thread_klass(), |
| vmSymbols::interrupt_method_name(), |
| vmSymbols::void_method_signature(), |
| current_thread); |
| |
| return JVMTI_ERROR_NONE; |
| } |
| |
| // Really this should be a Java call to Thread.interrupt to ensure the same |
| // semantics, however historically this has not been done for some reason. |
| // So we continue with that (which means we don't interact with any Java-level |
| // Interruptible object) but we must set the Java-level interrupted state. |
| java_lang_Thread::set_interrupted(thread_obj, true); |
| java_thread->interrupt(); |
| |
| return JVMTI_ERROR_NONE; |
| } /* end InterruptThread */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // info_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JavaThread* java_thread = nullptr; |
| oop thread_oop = nullptr; |
| |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| // if thread is null the current thread is used |
| if (thread == nullptr) { |
| java_thread = JavaThread::current(); |
| thread_oop = get_vthread_or_thread_oop(java_thread); |
| if (thread_oop == nullptr || !thread_oop->is_a(vmClasses::Thread_klass())) { |
| return JVMTI_ERROR_INVALID_THREAD; |
| } |
| } else { |
| jvmtiError err = JvmtiExport::cv_external_thread_to_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| if (err != JVMTI_ERROR_NONE) { |
| // We got an error code so we don't have a JavaThread *, but |
| // only return an error from here if we didn't get a valid |
| // thread_oop. |
| // In the virtual thread case the cv_external_thread_to_JavaThread is expected to correctly set |
| // the thread_oop and return JVMTI_ERROR_INVALID_THREAD which we ignore here. |
| if (thread_oop == nullptr) { |
| return err; |
| } |
| } |
| } |
| // We have a valid thread_oop so we can return some thread info. |
| |
| Handle thread_obj(current_thread, thread_oop); |
| Handle name; |
| ThreadPriority priority; |
| Handle thread_group; |
| Handle context_class_loader; |
| bool is_daemon; |
| |
| name = Handle(current_thread, java_lang_Thread::name(thread_obj())); |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj())) { |
| priority = (ThreadPriority)JVMTI_THREAD_NORM_PRIORITY; |
| is_daemon = true; |
| if (java_lang_VirtualThread::state(thread_obj()) == java_lang_VirtualThread::TERMINATED) { |
| thread_group = Handle(current_thread, nullptr); |
| } else { |
| thread_group = Handle(current_thread, java_lang_Thread_Constants::get_VTHREAD_GROUP()); |
| } |
| } else { |
| priority = java_lang_Thread::priority(thread_obj()); |
| is_daemon = java_lang_Thread::is_daemon(thread_obj()); |
| if (java_lang_Thread::get_thread_status(thread_obj()) == JavaThreadStatus::TERMINATED) { |
| thread_group = Handle(current_thread, nullptr); |
| } else { |
| thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj())); |
| } |
| } |
| |
| oop loader = java_lang_Thread::context_class_loader(thread_obj()); |
| context_class_loader = Handle(current_thread, loader); |
| |
| { const char *n; |
| |
| if (name() != nullptr) { |
| n = java_lang_String::as_utf8_string(name()); |
| } else { |
| int utf8_length = 0; |
| n = UNICODE::as_utf8((jchar*) nullptr, utf8_length); |
| } |
| |
| info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1); |
| if (info_ptr->name == nullptr) |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| |
| strcpy(info_ptr->name, n); |
| } |
| info_ptr->is_daemon = is_daemon; |
| info_ptr->priority = priority; |
| |
| info_ptr->context_class_loader = (context_class_loader.is_null()) ? nullptr : |
| jni_reference(context_class_loader); |
| info_ptr->thread_group = jni_reference(thread_group); |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetThreadInfo */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // owned_monitor_count_ptr - pre-checked for null |
| // owned_monitors_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetOwnedMonitorInfo(jthread thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) { |
| JavaThread* calling_thread = JavaThread::current(); |
| HandleMark hm(calling_thread); |
| |
| // growable array of jvmti monitors info on the C-heap |
| GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = |
| new (mtServiceability) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, mtServiceability); |
| |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(calling_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_oop = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| if (err != JVMTI_ERROR_NONE) { |
| delete owned_monitors_list; |
| return err; |
| } |
| |
| if (java_lang_VirtualThread::is_instance(thread_oop)) { |
| // There is no monitor info to collect if target virtual thread is unmounted. |
| if (java_thread != nullptr) { |
| VirtualThreadGetOwnedMonitorInfoClosure op(this, |
| Handle(calling_thread, thread_oop), |
| owned_monitors_list); |
| Handshake::execute(&op, java_thread); |
| err = op.result(); |
| } |
| } else { |
| EscapeBarrier eb(true, calling_thread, java_thread); |
| if (!eb.deoptimize_objects(MaxJavaStackTraceDepth)) { |
| delete owned_monitors_list; |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| } |
| |
| if (java_thread == calling_thread) { |
| // It is only safe to make a direct call on the current thread. |
| // All other usage needs to use a direct handshake for safety. |
| err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); |
| } else { |
| // get owned monitors info with handshake |
| GetOwnedMonitorInfoClosure op(calling_thread, this, owned_monitors_list); |
| Handshake::execute(&op, java_thread); |
| err = op.result(); |
| } |
| } |
| |
| jint owned_monitor_count = owned_monitors_list->length(); |
| if (err == JVMTI_ERROR_NONE) { |
| if ((err = allocate(owned_monitor_count * sizeof(jobject *), |
| (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) { |
| // copy into the returned array |
| for (int i = 0; i < owned_monitor_count; i++) { |
| (*owned_monitors_ptr)[i] = |
| ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; |
| } |
| *owned_monitor_count_ptr = owned_monitor_count; |
| } |
| } |
| // clean up. |
| for (int i = 0; i < owned_monitor_count; i++) { |
| deallocate((unsigned char*)owned_monitors_list->at(i)); |
| } |
| delete owned_monitors_list; |
| |
| return err; |
| } /* end GetOwnedMonitorInfo */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // monitor_info_count_ptr - pre-checked for null |
| // monitor_info_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetOwnedMonitorStackDepthInfo(jthread thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) { |
| JavaThread* calling_thread = JavaThread::current(); |
| HandleMark hm(calling_thread); |
| |
| // growable array of jvmti monitors info on the C-heap |
| GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list = |
| new (mtServiceability) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, mtServiceability); |
| |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(calling_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_oop = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| if (err != JVMTI_ERROR_NONE) { |
| delete owned_monitors_list; |
| return err; |
| } |
| |
| if (java_lang_VirtualThread::is_instance(thread_oop)) { |
| // There is no monitor info to collect if target virtual thread is unmounted. |
| if (java_thread != nullptr) { |
| VirtualThreadGetOwnedMonitorInfoClosure op(this, |
| Handle(calling_thread, thread_oop), |
| owned_monitors_list); |
| Handshake::execute(&op, java_thread); |
| err = op.result(); |
| } |
| } else { |
| EscapeBarrier eb(true, calling_thread, java_thread); |
| if (!eb.deoptimize_objects(MaxJavaStackTraceDepth)) { |
| delete owned_monitors_list; |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| } |
| |
| if (java_thread == calling_thread) { |
| // It is only safe to make a direct call on the current thread. |
| // All other usage needs to use a direct handshake for safety. |
| err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list); |
| } else { |
| // get owned monitors info with handshake |
| GetOwnedMonitorInfoClosure op(calling_thread, this, owned_monitors_list); |
| Handshake::execute(&op, java_thread); |
| err = op.result(); |
| } |
| } |
| jint owned_monitor_count = owned_monitors_list->length(); |
| if (err == JVMTI_ERROR_NONE) { |
| if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo), |
| (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) { |
| // copy to output array. |
| for (int i = 0; i < owned_monitor_count; i++) { |
| (*monitor_info_ptr)[i].monitor = |
| ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor; |
| (*monitor_info_ptr)[i].stack_depth = |
| ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth; |
| } |
| } |
| *monitor_info_count_ptr = owned_monitor_count; |
| } |
| |
| // clean up. |
| for (int i = 0; i < owned_monitor_count; i++) { |
| deallocate((unsigned char*)owned_monitors_list->at(i)); |
| } |
| delete owned_monitors_list; |
| |
| return err; |
| } /* end GetOwnedMonitorStackDepthInfo */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // monitor_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetCurrentContendedMonitor(jthread thread, jobject* monitor_ptr) { |
| JavaThread* calling_thread = JavaThread::current(); |
| HandleMark hm(calling_thread); |
| |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(calling_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_oop = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| if (java_lang_VirtualThread::is_instance(thread_oop)) { |
| // There is no monitor info to collect if target virtual thread is unmounted. |
| if (java_thread != nullptr) { |
| GetCurrentContendedMonitorClosure op(calling_thread, this, monitor_ptr, /* is_virtual */ true); |
| Handshake::execute(&op, java_thread); |
| err = op.result(); |
| } else { |
| *monitor_ptr = nullptr; |
| if (!JvmtiEnvBase::is_vthread_alive(thread_oop)) { |
| err = JVMTI_ERROR_THREAD_NOT_ALIVE; |
| } |
| } |
| return err; |
| } |
| if (java_thread == calling_thread) { |
| // It is only safe to make a direct call on the current thread. |
| // All other usage needs to use a direct handshake for safety. |
| err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr, /* is_virtual */ false); |
| } else { |
| // get contended monitor information with handshake |
| GetCurrentContendedMonitorClosure op(calling_thread, this, monitor_ptr, /* is_virtual */ false); |
| Handshake::execute(&op, java_thread); |
| err = op.result(); |
| } |
| return err; |
| } /* end GetCurrentContendedMonitor */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // proc - pre-checked for null |
| // arg - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) { |
| JavaThread* current_thread = JavaThread::current(); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_oop = nullptr; |
| ThreadsListHandle tlh(current_thread); |
| jvmtiError err = JvmtiExport::cv_external_thread_to_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| if (err != JVMTI_ERROR_NONE) { |
| // We got an error code so we don't have a JavaThread *, but |
| // only return an error from here if we didn't get a valid |
| // thread_oop. |
| if (thread_oop == nullptr) { |
| return err; |
| } |
| // We have a valid thread_oop. |
| } |
| |
| if (thread_oop->is_a(vmClasses::BaseVirtualThread_klass())) { |
| // No support for virtual threads. |
| return JVMTI_ERROR_UNSUPPORTED_OPERATION; |
| } |
| if (java_thread != nullptr) { |
| // 'thread' refers to an existing JavaThread. |
| return JVMTI_ERROR_INVALID_THREAD; |
| } |
| |
| if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) { |
| return JVMTI_ERROR_INVALID_PRIORITY; |
| } |
| |
| Handle thread_hndl(current_thread, thread_oop); |
| |
| JvmtiAgentThread* new_thread = new JvmtiAgentThread(this, proc, arg); |
| |
| // At this point it may be possible that no osthread was created for the |
| // JavaThread due to lack of resources. |
| if (new_thread->osthread() == nullptr) { |
| // The new thread is not known to Thread-SMR yet so we can just delete. |
| delete new_thread; |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| } |
| |
| JavaThread::start_internal_daemon(current_thread, new_thread, thread_hndl, |
| (ThreadPriority)priority); |
| |
| return JVMTI_ERROR_NONE; |
| } /* end RunAgentThread */ |
| |
| // |
| // Thread Group functions |
| // |
| |
| // group_count_ptr - pre-checked for null |
| // groups_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| |
| // Only one top level thread group now. |
| *group_count_ptr = 1; |
| |
| // Allocate memory to store global-refs to the thread groups. |
| // Assume this area is freed by caller. |
| *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr)); |
| |
| NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY); |
| |
| // Convert oop to Handle, then convert Handle to global-ref. |
| { |
| HandleMark hm(current_thread); |
| Handle system_thread_group(current_thread, Universe::system_thread_group()); |
| *groups_ptr[0] = jni_reference(system_thread_group); |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetTopThreadGroups */ |
| |
| |
| // info_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) { |
| Thread* current_thread = Thread::current(); |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| |
| Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group)); |
| NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP); |
| |
| const char* name; |
| Handle parent_group; |
| bool is_daemon; |
| ThreadPriority max_priority; |
| |
| name = java_lang_ThreadGroup::name(group_obj()); |
| parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj())); |
| is_daemon = java_lang_ThreadGroup::is_daemon(group_obj()); |
| max_priority = java_lang_ThreadGroup::maxPriority(group_obj()); |
| |
| info_ptr->is_daemon = is_daemon; |
| info_ptr->max_priority = max_priority; |
| info_ptr->parent = jni_reference(parent_group); |
| |
| if (name != nullptr) { |
| info_ptr->name = (char*)jvmtiMalloc(strlen(name)+1); |
| NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY); |
| strcpy(info_ptr->name, name); |
| } else { |
| info_ptr->name = nullptr; |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetThreadGroupInfo */ |
| |
| // thread_count_ptr - pre-checked for null |
| // threads_ptr - pre-checked for null |
| // group_count_ptr - pre-checked for null |
| // groups_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) { |
| jvmtiError err; |
| JavaThread* current_thread = JavaThread::current(); |
| oop group_obj = JNIHandles::resolve_external_guard(group); |
| NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP); |
| |
| Handle *thread_objs = nullptr; |
| objArrayHandle group_objs; |
| jint nthreads = 0; |
| jint ngroups = 0; |
| int hidden_threads = 0; |
| |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| |
| Handle group_hdl(current_thread, group_obj); |
| |
| err = get_live_threads(current_thread, group_hdl, &nthreads, &thread_objs); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| err = get_subgroups(current_thread, group_hdl, &ngroups, &group_objs); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| *group_count_ptr = ngroups; |
| *thread_count_ptr = nthreads; |
| *threads_ptr = new_jthreadArray(nthreads, thread_objs); |
| *groups_ptr = new_jthreadGroupArray(ngroups, group_objs); |
| if (nthreads > 0 && *threads_ptr == nullptr) { |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| } |
| if (ngroups > 0 && *groups_ptr == nullptr) { |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetThreadGroupChildren */ |
| |
| |
| // |
| // Stack Frame functions |
| // |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // max_frame_count - pre-checked to be greater than or equal to 0 |
| // frame_buffer - pre-checked for null |
| // count_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetStackTrace(jthread thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| HandleMark hm(current_thread); |
| |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| if (java_thread == nullptr) { // Target virtual thread is unmounted. |
| ResourceMark rm(current_thread); |
| |
| VM_VirtualThreadGetStackTrace op(this, Handle(current_thread, thread_obj), |
| start_depth, max_frame_count, |
| frame_buffer, count_ptr); |
| VMThread::execute(&op); |
| return op.result(); |
| } |
| VirtualThreadGetStackTraceClosure op(this, Handle(current_thread, thread_obj), |
| start_depth, max_frame_count, frame_buffer, count_ptr); |
| Handshake::execute(&op, java_thread); |
| return op.result(); |
| } |
| |
| // It is only safe to perform the direct operation on the current |
| // thread. All other usage needs to use a direct handshake for safety. |
| if (java_thread == JavaThread::current()) { |
| err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr); |
| } else { |
| // Get stack trace with handshake. |
| GetStackTraceClosure op(this, start_depth, max_frame_count, frame_buffer, count_ptr); |
| Handshake::execute(&op, java_thread); |
| err = op.result(); |
| } |
| |
| return err; |
| } /* end GetStackTrace */ |
| |
| |
| // max_frame_count - pre-checked to be greater than or equal to 0 |
| // stack_info_ptr - pre-checked for null |
| // thread_count_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) { |
| jvmtiError err = JVMTI_ERROR_NONE; |
| JavaThread* calling_thread = JavaThread::current(); |
| |
| // JVMTI get stack traces at safepoint. |
| VM_GetAllStackTraces op(this, calling_thread, max_frame_count); |
| VMThread::execute(&op); |
| *thread_count_ptr = op.final_thread_count(); |
| *stack_info_ptr = op.stack_info(); |
| err = op.result(); |
| return err; |
| } /* end GetAllStackTraces */ |
| |
| |
| // thread_count - pre-checked to be greater than or equal to 0 |
| // thread_list - pre-checked for null |
| // max_frame_count - pre-checked to be greater than or equal to 0 |
| // stack_info_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) { |
| jvmtiError err = JVMTI_ERROR_NONE; |
| JvmtiVTMSTransitionDisabler disabler; |
| |
| if (thread_count == 1) { |
| |
| // Use direct handshake if we need to get only one stack trace. |
| JavaThread *current_thread = JavaThread::current(); |
| ThreadsListHandle tlh(current_thread); |
| |
| jthread thread = thread_list[0]; |
| JavaThread *java_thread; |
| oop thread_obj = nullptr; |
| err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj) && java_thread == nullptr) { |
| // Target virtual thread is unmounted. |
| ResourceMark rm(current_thread); |
| MultipleStackTracesCollector collector(this, max_frame_count); |
| collector.fill_frames(thread, java_thread, thread_obj); |
| collector.allocate_and_fill_stacks(/* thread_count */ 1); |
| *stack_info_ptr = collector.stack_info(); |
| return collector.result(); |
| } |
| |
| GetSingleStackTraceClosure op(this, current_thread, thread, max_frame_count); |
| Handshake::execute(&op, &tlh, java_thread); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *stack_info_ptr = op.stack_info(); |
| } |
| } else { |
| // JVMTI get stack traces at safepoint. |
| VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *stack_info_ptr = op.stack_info(); |
| } |
| } |
| return err; |
| } /* end GetThreadListStackTraces */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // count_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetFrameCount(jthread thread, jint* count_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| HandleMark hm(current_thread); |
| |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| if (java_thread == nullptr) { // Target virtual thread is unmounted. |
| VM_VirtualThreadGetFrameCount op(this, Handle(current_thread, thread_obj), count_ptr); |
| VMThread::execute(&op); |
| return op.result(); |
| } |
| VirtualThreadGetFrameCountClosure op(this, Handle(current_thread, thread_obj), count_ptr); |
| Handshake::execute(&op, java_thread); |
| return op.result(); |
| } |
| |
| // It is only safe to perform the direct operation on the current |
| // thread. All other usage needs to use a direct handshake for safety. |
| if (java_thread == JavaThread::current()) { |
| err = get_frame_count(java_thread, count_ptr); |
| } else { |
| // get java stack frame count with handshake. |
| GetFrameCountClosure op(this, count_ptr); |
| Handshake::execute(&op, java_thread); |
| err = op.result(); |
| } |
| return err; |
| } /* end GetFrameCount */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| jvmtiError |
| JvmtiEnv::PopFrame(jthread thread) { |
| JavaThread* current_thread = JavaThread::current(); |
| HandleMark hm(current_thread); |
| |
| if (thread == nullptr) { |
| return JVMTI_ERROR_INVALID_THREAD; |
| } |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = java_thread == current_thread; |
| |
| err = check_non_suspended_or_opaque_frame(java_thread, thread_obj, self); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| // retrieve or create the state |
| JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread); |
| if (state == nullptr) { |
| return JVMTI_ERROR_THREAD_NOT_ALIVE; |
| } |
| |
| // Eagerly reallocate scalar replaced objects. |
| EscapeBarrier eb(true, current_thread, java_thread); |
| if (!eb.deoptimize_objects(1)) { |
| // Reallocation of scalar replaced objects failed -> return with error |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| } |
| |
| MutexLocker mu(JvmtiThreadState_lock); |
| UpdateForPopTopFrameClosure op(state); |
| if (self) { |
| op.doit(java_thread, self); |
| } else { |
| Handshake::execute(&op, java_thread); |
| } |
| return op.result(); |
| } /* end PopFrame */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| // method_ptr - pre-checked for null |
| // location_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetFrameLocation(jthread thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| HandleMark hm(current_thread); |
| |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| if (java_thread == nullptr) { // Target virtual thread is unmounted. |
| err = get_frame_location(thread_obj, depth, method_ptr, location_ptr); |
| return err; |
| } |
| VirtualThreadGetFrameLocationClosure op(this, Handle(current_thread, thread_obj), |
| depth, method_ptr, location_ptr); |
| Handshake::execute(&op, java_thread); |
| return op.result(); |
| } |
| |
| // It is only safe to perform the direct operation on the current |
| // thread. All other usage needs to use a direct handshake for safety. |
| if (java_thread == JavaThread::current()) { |
| err = get_frame_location(java_thread, depth, method_ptr, location_ptr); |
| } else { |
| // JVMTI get java stack frame location via direct handshake. |
| GetFrameLocationClosure op(this, depth, method_ptr, location_ptr); |
| Handshake::execute(&op, java_thread); |
| err = op.result(); |
| } |
| return err; |
| } /* end GetFrameLocation */ |
| |
| |
| // Threads_lock NOT held, java_thread not protected by lock |
| // depth - pre-checked as non-negative |
| jvmtiError |
| JvmtiEnv::NotifyFramePop(jthread thread, jint depth) { |
| ResourceMark rm; |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh; |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| JavaThread* current = JavaThread::current(); |
| HandleMark hm(current); |
| Handle thread_handle(current, thread_obj); |
| JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread, thread_handle); |
| if (state == nullptr) { |
| return JVMTI_ERROR_THREAD_NOT_ALIVE; |
| } |
| |
| if (java_lang_VirtualThread::is_instance(thread_handle())) { |
| VirtualThreadSetFramePopClosure op(this, thread_handle, state, depth); |
| MutexLocker mu(current, JvmtiThreadState_lock); |
| if (java_thread == nullptr || java_thread == current) { |
| // Target virtual thread is unmounted or current. |
| op.doit(java_thread, true /* self */); |
| } else { |
| Handshake::execute(&op, java_thread); |
| } |
| return op.result(); |
| } |
| |
| SetFramePopClosure op(this, state, depth); |
| MutexLocker mu(current, JvmtiThreadState_lock); |
| if (java_thread == current) { |
| op.doit(java_thread, true /* self */); |
| } else { |
| Handshake::execute(&op, java_thread); |
| } |
| return op.result(); |
| } /* end NotifyFramePop */ |
| |
| |
| // |
| // Force Early Return functions |
| // |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| jvmtiError |
| JvmtiEnv::ForceEarlyReturnObject(jthread thread, jobject value) { |
| jvalue val; |
| val.l = value; |
| return force_early_return(thread, val, atos); |
| } /* end ForceEarlyReturnObject */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| jvmtiError |
| JvmtiEnv::ForceEarlyReturnInt(jthread thread, jint value) { |
| jvalue val; |
| val.i = value; |
| return force_early_return(thread, val, itos); |
| } /* end ForceEarlyReturnInt */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| jvmtiError |
| JvmtiEnv::ForceEarlyReturnLong(jthread thread, jlong value) { |
| jvalue val; |
| val.j = value; |
| return force_early_return(thread, val, ltos); |
| } /* end ForceEarlyReturnLong */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| jvmtiError |
| JvmtiEnv::ForceEarlyReturnFloat(jthread thread, jfloat value) { |
| jvalue val; |
| val.f = value; |
| return force_early_return(thread, val, ftos); |
| } /* end ForceEarlyReturnFloat */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| jvmtiError |
| JvmtiEnv::ForceEarlyReturnDouble(jthread thread, jdouble value) { |
| jvalue val; |
| val.d = value; |
| return force_early_return(thread, val, dtos); |
| } /* end ForceEarlyReturnDouble */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| jvmtiError |
| JvmtiEnv::ForceEarlyReturnVoid(jthread thread) { |
| jvalue val; |
| val.j = 0L; |
| return force_early_return(thread, val, vtos); |
| } /* end ForceEarlyReturnVoid */ |
| |
| |
| // |
| // Heap functions |
| // |
| |
| // klass - null is a valid value, must be checked |
| // initial_object - null is a valid value, must be checked |
| // callbacks - pre-checked for null |
| // user_data - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) { |
| // check klass if provided |
| Klass* k = nullptr; |
| if (klass != nullptr) { |
| oop k_mirror = JNIHandles::resolve_external_guard(klass); |
| if (k_mirror == nullptr) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| return JVMTI_ERROR_NONE; |
| } |
| k = java_lang_Class::as_Klass(k_mirror); |
| if (klass == nullptr) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| } |
| |
| if (initial_object != nullptr) { |
| oop init_obj = JNIHandles::resolve_external_guard(initial_object); |
| if (init_obj == nullptr) { |
| return JVMTI_ERROR_INVALID_OBJECT; |
| } |
| } |
| |
| Thread *thread = Thread::current(); |
| HandleMark hm(thread); |
| |
| TraceTime t("FollowReferences", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
| JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, k, initial_object, callbacks, user_data); |
| return JVMTI_ERROR_NONE; |
| } /* end FollowReferences */ |
| |
| |
| // klass - null is a valid value, must be checked |
| // callbacks - pre-checked for null |
| // user_data - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) { |
| // check klass if provided |
| Klass* k = nullptr; |
| if (klass != nullptr) { |
| oop k_mirror = JNIHandles::resolve_external_guard(klass); |
| if (k_mirror == nullptr) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| return JVMTI_ERROR_NONE; |
| } |
| k = java_lang_Class::as_Klass(k_mirror); |
| if (k == nullptr) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| } |
| |
| TraceTime t("IterateThroughHeap", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
| JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, k, callbacks, user_data); |
| return JVMTI_ERROR_NONE; |
| } /* end IterateThroughHeap */ |
| |
| |
| // tag_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) { |
| oop o = JNIHandles::resolve_external_guard(object); |
| NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); |
| *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object); |
| return JVMTI_ERROR_NONE; |
| } /* end GetTag */ |
| |
| |
| jvmtiError |
| JvmtiEnv::SetTag(jobject object, jlong tag) { |
| oop o = JNIHandles::resolve_external_guard(object); |
| NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); |
| JvmtiTagMap::tag_map_for(this)->set_tag(object, tag); |
| return JVMTI_ERROR_NONE; |
| } /* end SetTag */ |
| |
| |
| // tag_count - pre-checked to be greater than or equal to 0 |
| // tags - pre-checked for null |
| // count_ptr - pre-checked for null |
| // object_result_ptr - null is a valid value, must be checked |
| // tag_result_ptr - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) { |
| TraceTime t("GetObjectsWithTags", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
| return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr); |
| } /* end GetObjectsWithTags */ |
| |
| |
| jvmtiError |
| JvmtiEnv::ForceGarbageCollection() { |
| Universe::heap()->collect(GCCause::_jvmti_force_gc); |
| return JVMTI_ERROR_NONE; |
| } /* end ForceGarbageCollection */ |
| |
| |
| // |
| // Heap (1.0) functions |
| // |
| |
| // object_reference_callback - pre-checked for null |
| // user_data - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) { |
| oop o = JNIHandles::resolve_external_guard(object); |
| NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT); |
| JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data); |
| return JVMTI_ERROR_NONE; |
| } /* end IterateOverObjectsReachableFromObject */ |
| |
| |
| // heap_root_callback - null is a valid value, must be checked |
| // stack_ref_callback - null is a valid value, must be checked |
| // object_ref_callback - null is a valid value, must be checked |
| // user_data - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) { |
| TraceTime t("IterateOverReachableObjects", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
| JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data); |
| return JVMTI_ERROR_NONE; |
| } /* end IterateOverReachableObjects */ |
| |
| |
| // heap_object_callback - pre-checked for null |
| // user_data - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { |
| TraceTime t("IterateOverHeap", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
| Thread *thread = Thread::current(); |
| HandleMark hm(thread); |
| JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, nullptr, heap_object_callback, user_data); |
| return JVMTI_ERROR_NONE; |
| } /* end IterateOverHeap */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // heap_object_callback - pre-checked for null |
| // user_data - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) { |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| // DO PRIMITIVE CLASS PROCESSING |
| return JVMTI_ERROR_NONE; |
| } |
| Klass* klass = java_lang_Class::as_Klass(k_mirror); |
| if (klass == nullptr) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| TraceTime t("IterateOverInstancesOfClass", TRACETIME_LOG(Debug, jvmti, objecttagging)); |
| JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data); |
| return JVMTI_ERROR_NONE; |
| } /* end IterateOverInstancesOfClass */ |
| |
| |
| // |
| // Local Variable functions |
| // |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| // value_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetLocalObject(jthread thread, jint depth, jint slot, jobject* value_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetOrSetLocal op(this, Handle(current_thread, thread_obj), |
| current_thread, depth, slot, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().l; |
| } |
| } else { |
| // Support for ordinary threads |
| VM_GetOrSetLocal op(java_thread, current_thread, depth, slot, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().l; |
| } |
| } |
| return err; |
| } /* end GetLocalObject */ |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| // value - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetLocalInstance(jthread thread, jint depth, jobject* value_ptr){ |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetReceiver op(this, Handle(current_thread, thread_obj), |
| current_thread, depth, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().l; |
| } |
| } else { |
| // Support for ordinary threads |
| VM_GetReceiver op(java_thread, current_thread, depth, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().l; |
| } |
| } |
| return err; |
| } /* end GetLocalInstance */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| // value_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetLocalInt(jthread thread, jint depth, jint slot, jint* value_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetOrSetLocal op(this, Handle(current_thread, thread_obj), |
| depth, slot, T_INT, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().i; |
| } |
| } else { |
| // Support for ordinary threads |
| VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().i; |
| } |
| } |
| return err; |
| } /* end GetLocalInt */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| // value_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetLocalLong(jthread thread, jint depth, jint slot, jlong* value_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetOrSetLocal op(this, Handle(current_thread, thread_obj), |
| depth, slot, T_LONG, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().j; |
| } |
| } else { |
| // Support for ordinary threads |
| VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().j; |
| } |
| } |
| return err; |
| } /* end GetLocalLong */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| // value_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetLocalFloat(jthread thread, jint depth, jint slot, jfloat* value_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetOrSetLocal op(this, Handle(current_thread, thread_obj), |
| depth, slot, T_FLOAT, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().f; |
| } |
| } else { |
| // Support for ordinary threads |
| VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().f; |
| } |
| } |
| return err; |
| } /* end GetLocalFloat */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| // value_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetLocalDouble(jthread thread, jint depth, jint slot, jdouble* value_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetOrSetLocal op(this, Handle(current_thread, thread_obj), |
| depth, slot, T_DOUBLE, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().d; |
| } |
| } else { |
| // Support for ordinary threads |
| VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| if (err == JVMTI_ERROR_NONE) { |
| *value_ptr = op.value().d; |
| } |
| } |
| return err; |
| } /* end GetLocalDouble */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| jvmtiError |
| JvmtiEnv::SetLocalObject(jthread thread, jint depth, jint slot, jobject value) { |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| jvalue val; |
| val.l = value; |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetOrSetLocal op(this, Handle(current_thread, thread_obj), |
| depth, slot, T_OBJECT, val, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| } else { |
| // Support for ordinary threads |
| VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| } |
| return err; |
| } /* end SetLocalObject */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| jvmtiError |
| JvmtiEnv::SetLocalInt(jthread thread, jint depth, jint slot, jint value) { |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| jvalue val; |
| val.i = value; |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetOrSetLocal op(this, Handle(current_thread, thread_obj), |
| depth, slot, T_INT, val, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| } else { |
| // Support for ordinary threads |
| VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| } |
| return err; |
| } /* end SetLocalInt */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| jvmtiError |
| JvmtiEnv::SetLocalLong(jthread thread, jint depth, jint slot, jlong value) { |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| jvalue val; |
| val.j = value; |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetOrSetLocal op(this, Handle(current_thread, thread_obj), |
| depth, slot, T_LONG, val, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| } else { |
| // Support for ordinary threads |
| VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| } |
| return err; |
| } /* end SetLocalLong */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| jvmtiError |
| JvmtiEnv::SetLocalFloat(jthread thread, jint depth, jint slot, jfloat value) { |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| jvalue val; |
| val.f = value; |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetOrSetLocal op(this, Handle(current_thread, thread_obj), |
| depth, slot, T_FLOAT, val, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| } else { |
| // Support for ordinary threads |
| VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| } |
| return err; |
| } /* end SetLocalFloat */ |
| |
| |
| // thread - NOT protected by ThreadsListHandle and NOT pre-checked |
| // depth - pre-checked as non-negative |
| jvmtiError |
| JvmtiEnv::SetLocalDouble(jthread thread, jint depth, jint slot, jdouble value) { |
| JavaThread* current_thread = JavaThread::current(); |
| // rm object is created to clean up the javaVFrame created in |
| // doit_prologue(), but after doit() is finished with it. |
| ResourceMark rm(current_thread); |
| HandleMark hm(current_thread); |
| JvmtiVTMSTransitionDisabler disabler(thread); |
| ThreadsListHandle tlh(current_thread); |
| |
| JavaThread* java_thread = nullptr; |
| oop thread_obj = nullptr; |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_obj); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| bool self = is_JavaThread_current(java_thread, thread_obj); |
| jvalue val; |
| val.d = value; |
| |
| if (java_lang_VirtualThread::is_instance(thread_obj)) { |
| VM_VirtualThreadGetOrSetLocal op(this, Handle(current_thread, thread_obj), |
| depth, slot, T_DOUBLE, val, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| } else { |
| // Support for ordinary threads |
| VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val, self); |
| VMThread::execute(&op); |
| err = op.result(); |
| } |
| return err; |
| } /* end SetLocalDouble */ |
| |
| |
| // |
| // Breakpoint functions |
| // |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| jvmtiError |
| JvmtiEnv::SetBreakpoint(Method* method, jlocation location) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| if (location < 0) { // simple invalid location check first |
| return JVMTI_ERROR_INVALID_LOCATION; |
| } |
| // verify that the breakpoint is not past the end of the method |
| if (location >= (jlocation) method->code_size()) { |
| return JVMTI_ERROR_INVALID_LOCATION; |
| } |
| |
| ResourceMark rm; |
| JvmtiBreakpoint bp(method, location); |
| JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); |
| if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE) |
| return JVMTI_ERROR_DUPLICATE; |
| |
| if (TraceJVMTICalls) { |
| jvmti_breakpoints.print(); |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end SetBreakpoint */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| jvmtiError |
| JvmtiEnv::ClearBreakpoint(Method* method, jlocation location) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| |
| if (location < 0) { // simple invalid location check first |
| return JVMTI_ERROR_INVALID_LOCATION; |
| } |
| |
| // verify that the breakpoint is not past the end of the method |
| if (location >= (jlocation) method->code_size()) { |
| return JVMTI_ERROR_INVALID_LOCATION; |
| } |
| |
| JvmtiBreakpoint bp(method, location); |
| |
| JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints(); |
| if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND) |
| return JVMTI_ERROR_NOT_FOUND; |
| |
| if (TraceJVMTICalls) { |
| jvmti_breakpoints.print(); |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end ClearBreakpoint */ |
| |
| |
| // |
| // Watched Field functions |
| // |
| |
| jvmtiError |
| JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) { |
| // make sure we haven't set this watch before |
| if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE; |
| fdesc_ptr->set_is_field_access_watched(true); |
| |
| JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true); |
| |
| return JVMTI_ERROR_NONE; |
| } /* end SetFieldAccessWatch */ |
| |
| |
| jvmtiError |
| JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) { |
| // make sure we have a watch to clear |
| if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND; |
| fdesc_ptr->set_is_field_access_watched(false); |
| |
| JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false); |
| |
| return JVMTI_ERROR_NONE; |
| } /* end ClearFieldAccessWatch */ |
| |
| |
| jvmtiError |
| JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) { |
| // make sure we haven't set this watch before |
| if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE; |
| fdesc_ptr->set_is_field_modification_watched(true); |
| |
| JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true); |
| |
| return JVMTI_ERROR_NONE; |
| } /* end SetFieldModificationWatch */ |
| |
| |
| jvmtiError |
| JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) { |
| // make sure we have a watch to clear |
| if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND; |
| fdesc_ptr->set_is_field_modification_watched(false); |
| |
| JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false); |
| |
| return JVMTI_ERROR_NONE; |
| } /* end ClearFieldModificationWatch */ |
| |
| // |
| // Class functions |
| // |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // signature_ptr - null is a valid value, must be checked |
| // generic_ptr - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) { |
| ResourceMark rm; |
| bool isPrimitive = java_lang_Class::is_primitive(k_mirror); |
| Klass* k = nullptr; |
| if (!isPrimitive) { |
| k = java_lang_Class::as_Klass(k_mirror); |
| NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| } |
| if (signature_ptr != nullptr) { |
| char* result = nullptr; |
| if (isPrimitive) { |
| char tchar = type2char(java_lang_Class::primitive_type(k_mirror)); |
| result = (char*) jvmtiMalloc(2); |
| result[0] = tchar; |
| result[1] = '\0'; |
| } else { |
| const char* class_sig = k->signature_name(); |
| result = (char *) jvmtiMalloc(strlen(class_sig)+1); |
| strcpy(result, class_sig); |
| } |
| *signature_ptr = result; |
| } |
| if (generic_ptr != nullptr) { |
| *generic_ptr = nullptr; |
| if (!isPrimitive && k->is_instance_klass()) { |
| Symbol* soo = InstanceKlass::cast(k)->generic_signature(); |
| if (soo != nullptr) { |
| const char *gen_sig = soo->as_C_string(); |
| if (gen_sig != nullptr) { |
| char* gen_result; |
| jvmtiError err = allocate(strlen(gen_sig) + 1, |
| (unsigned char **)&gen_result); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| strcpy(gen_result, gen_sig); |
| *generic_ptr = gen_result; |
| } |
| } |
| } |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end GetClassSignature */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // status_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) { |
| jint result = 0; |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| result |= JVMTI_CLASS_STATUS_PRIMITIVE; |
| } else { |
| Klass* k = java_lang_Class::as_Klass(k_mirror); |
| NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| result = k->jvmti_class_status(); |
| } |
| *status_ptr = result; |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetClassStatus */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // source_name_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) { |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| return JVMTI_ERROR_ABSENT_INFORMATION; |
| } |
| Klass* k_klass = java_lang_Class::as_Klass(k_mirror); |
| NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS); |
| |
| if (!k_klass->is_instance_klass()) { |
| return JVMTI_ERROR_ABSENT_INFORMATION; |
| } |
| |
| Symbol* sfnOop = InstanceKlass::cast(k_klass)->source_file_name(); |
| NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION); |
| { |
| JavaThread* current_thread = JavaThread::current(); |
| ResourceMark rm(current_thread); |
| const char* sfncp = (const char*) sfnOop->as_C_string(); |
| *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1); |
| strcpy(*source_name_ptr, sfncp); |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetSourceFileName */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // modifiers_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| jint result = 0; |
| if (!java_lang_Class::is_primitive(k_mirror)) { |
| Klass* k = java_lang_Class::as_Klass(k_mirror); |
| NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| result = k->compute_modifier_flags(); |
| |
| // Reset the deleted ACC_SUPER bit (deleted in compute_modifier_flags()). |
| if (k->is_super()) { |
| result |= JVM_ACC_SUPER; |
| } |
| } else { |
| result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC); |
| } |
| *modifiers_ptr = result; |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetClassModifiers */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // method_count_ptr - pre-checked for null |
| // methods_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| HandleMark hm(current_thread); |
| |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| *method_count_ptr = 0; |
| *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); |
| return JVMTI_ERROR_NONE; |
| } |
| Klass* k = java_lang_Class::as_Klass(k_mirror); |
| NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| |
| // Return CLASS_NOT_PREPARED error as per JVMTI spec. |
| if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
| return JVMTI_ERROR_CLASS_NOT_PREPARED; |
| } |
| |
| if (!k->is_instance_klass()) { |
| *method_count_ptr = 0; |
| *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID)); |
| return JVMTI_ERROR_NONE; |
| } |
| InstanceKlass* ik = InstanceKlass::cast(k); |
| // Allocate the result and fill it in |
| int result_length = ik->methods()->length(); |
| jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID)); |
| int index; |
| bool jmethodids_found = true; |
| int skipped = 0; // skip overpass methods |
| |
| for (index = 0; index < result_length; index++) { |
| Method* m = ik->methods()->at(index); |
| // Depending on can_maintain_original_method_order capability use the original |
| // method ordering indices stored in the class, so we can emit jmethodIDs in |
| // the order they appeared in the class file or just copy in current order. |
| int result_index = JvmtiExport::can_maintain_original_method_order() ? ik->method_ordering()->at(index) : index; |
| assert(result_index >= 0 && result_index < result_length, "invalid original method index"); |
| if (m->is_overpass()) { |
| result_list[result_index] = nullptr; |
| skipped++; |
| continue; |
| } |
| jmethodID id; |
| if (jmethodids_found) { |
| id = m->find_jmethod_id_or_null(); |
| if (id == nullptr) { |
| // If we find an uninitialized value, make sure there is |
| // enough space for all the uninitialized values we might |
| // find. |
| ik->ensure_space_for_methodids(index); |
| jmethodids_found = false; |
| id = m->jmethod_id(); |
| } |
| } else { |
| id = m->jmethod_id(); |
| } |
| result_list[result_index] = id; |
| } |
| |
| // Fill in return value. |
| if (skipped > 0) { |
| // copy results skipping null methodIDs |
| *methods_ptr = (jmethodID*)jvmtiMalloc((result_length - skipped) * sizeof(jmethodID)); |
| *method_count_ptr = result_length - skipped; |
| for (index = 0, skipped = 0; index < result_length; index++) { |
| if (result_list[index] == nullptr) { |
| skipped++; |
| } else { |
| (*methods_ptr)[index - skipped] = result_list[index]; |
| } |
| } |
| deallocate((unsigned char *)result_list); |
| } else { |
| *method_count_ptr = result_length; |
| *methods_ptr = result_list; |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetClassMethods */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // field_count_ptr - pre-checked for null |
| // fields_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) { |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| *field_count_ptr = 0; |
| *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); |
| return JVMTI_ERROR_NONE; |
| } |
| JavaThread* current_thread = JavaThread::current(); |
| HandleMark hm(current_thread); |
| Klass* k = java_lang_Class::as_Klass(k_mirror); |
| NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| |
| // Return CLASS_NOT_PREPARED error as per JVMTI spec. |
| if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) { |
| return JVMTI_ERROR_CLASS_NOT_PREPARED; |
| } |
| |
| if (!k->is_instance_klass()) { |
| *field_count_ptr = 0; |
| *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID)); |
| return JVMTI_ERROR_NONE; |
| } |
| |
| |
| InstanceKlass* ik = InstanceKlass::cast(k); |
| |
| int result_count = 0; |
| // First, count the fields. |
| FilteredFieldStream flds(ik, true, true); |
| result_count = flds.field_count(); |
| |
| // Allocate the result and fill it in |
| jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID)); |
| // The JVMTI spec requires fields in the order they occur in the class file, |
| // this is the reverse order of what FieldStream hands out. |
| int id_index = (result_count - 1); |
| |
| for (FilteredFieldStream src_st(ik, true, true); !src_st.eos(); src_st.next()) { |
| result_list[id_index--] = jfieldIDWorkaround::to_jfieldID( |
| ik, src_st.offset(), |
| src_st.access_flags().is_static()); |
| } |
| assert(id_index == -1, "just checking"); |
| // Fill in the results |
| *field_count_ptr = result_count; |
| *fields_ptr = result_list; |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetClassFields */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // interface_count_ptr - pre-checked for null |
| // interfaces_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) { |
| { |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| *interface_count_ptr = 0; |
| *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); |
| return JVMTI_ERROR_NONE; |
| } |
| JavaThread* current_thread = JavaThread::current(); |
| HandleMark hm(current_thread); |
| Klass* k = java_lang_Class::as_Klass(k_mirror); |
| NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| |
| // Return CLASS_NOT_PREPARED error as per JVMTI spec. |
| if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) |
| return JVMTI_ERROR_CLASS_NOT_PREPARED; |
| |
| if (!k->is_instance_klass()) { |
| *interface_count_ptr = 0; |
| *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass)); |
| return JVMTI_ERROR_NONE; |
| } |
| |
| Array<InstanceKlass*>* interface_list = InstanceKlass::cast(k)->local_interfaces(); |
| const int result_length = (interface_list == nullptr ? 0 : interface_list->length()); |
| jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass)); |
| for (int i_index = 0; i_index < result_length; i_index += 1) { |
| InstanceKlass* klass_at = interface_list->at(i_index); |
| assert(klass_at->is_klass(), "interfaces must be Klass*s"); |
| assert(klass_at->is_interface(), "interfaces must be interfaces"); |
| oop mirror_at = klass_at->java_mirror(); |
| Handle handle_at = Handle(current_thread, mirror_at); |
| result_list[i_index] = (jclass) jni_reference(handle_at); |
| } |
| *interface_count_ptr = result_length; |
| *interfaces_ptr = result_list; |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetImplementedInterfaces */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // minor_version_ptr - pre-checked for null |
| // major_version_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) { |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| return JVMTI_ERROR_ABSENT_INFORMATION; |
| } |
| Klass* klass = java_lang_Class::as_Klass(k_mirror); |
| |
| jint status = klass->jvmti_class_status(); |
| if (status & (JVMTI_CLASS_STATUS_ERROR)) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| if (status & (JVMTI_CLASS_STATUS_ARRAY)) { |
| return JVMTI_ERROR_ABSENT_INFORMATION; |
| } |
| |
| InstanceKlass* ik = InstanceKlass::cast(klass); |
| *minor_version_ptr = ik->minor_version(); |
| *major_version_ptr = ik->major_version(); |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetClassVersionNumbers */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // constant_pool_count_ptr - pre-checked for null |
| // constant_pool_byte_count_ptr - pre-checked for null |
| // constant_pool_bytes_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) { |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| return JVMTI_ERROR_ABSENT_INFORMATION; |
| } |
| |
| Klass* klass = java_lang_Class::as_Klass(k_mirror); |
| Thread *thread = Thread::current(); |
| ResourceMark rm(thread); |
| |
| jint status = klass->jvmti_class_status(); |
| if (status & (JVMTI_CLASS_STATUS_ERROR)) { |
| return JVMTI_ERROR_INVALID_CLASS; |
| } |
| if (status & (JVMTI_CLASS_STATUS_ARRAY)) { |
| return JVMTI_ERROR_ABSENT_INFORMATION; |
| } |
| |
| InstanceKlass* ik = InstanceKlass::cast(klass); |
| JvmtiConstantPoolReconstituter reconstituter(ik); |
| if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
| return reconstituter.get_error(); |
| } |
| |
| unsigned char *cpool_bytes; |
| int cpool_size = reconstituter.cpool_size(); |
| if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
| return reconstituter.get_error(); |
| } |
| jvmtiError res = allocate(cpool_size, &cpool_bytes); |
| if (res != JVMTI_ERROR_NONE) { |
| return res; |
| } |
| reconstituter.copy_cpool_bytes(cpool_bytes); |
| if (reconstituter.get_error() != JVMTI_ERROR_NONE) { |
| return reconstituter.get_error(); |
| } |
| |
| constantPoolHandle constants(thread, ik->constants()); |
| *constant_pool_count_ptr = constants->length(); |
| *constant_pool_byte_count_ptr = cpool_size; |
| *constant_pool_bytes_ptr = cpool_bytes; |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetConstantPool */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // is_interface_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) { |
| { |
| bool result = false; |
| if (!java_lang_Class::is_primitive(k_mirror)) { |
| Klass* k = java_lang_Class::as_Klass(k_mirror); |
| if (k != nullptr && k->is_interface()) { |
| result = true; |
| } |
| } |
| *is_interface_ptr = result; |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end IsInterface */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // is_array_class_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) { |
| { |
| bool result = false; |
| if (!java_lang_Class::is_primitive(k_mirror)) { |
| Klass* k = java_lang_Class::as_Klass(k_mirror); |
| if (k != nullptr && k->is_array_klass()) { |
| result = true; |
| } |
| } |
| *is_array_class_ptr = result; |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end IsArrayClass */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // classloader_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) { |
| { |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| *classloader_ptr = (jclass) jni_reference(Handle()); |
| return JVMTI_ERROR_NONE; |
| } |
| JavaThread* current_thread = JavaThread::current(); |
| HandleMark hm(current_thread); |
| Klass* k = java_lang_Class::as_Klass(k_mirror); |
| NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| |
| oop result_oop = k->class_loader(); |
| if (result_oop == nullptr) { |
| *classloader_ptr = (jclass) jni_reference(Handle()); |
| return JVMTI_ERROR_NONE; |
| } |
| Handle result_handle = Handle(current_thread, result_oop); |
| jclass result_jnihandle = (jclass) jni_reference(result_handle); |
| *classloader_ptr = result_jnihandle; |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end GetClassLoader */ |
| |
| |
| // k_mirror - may be primitive, this must be checked |
| // source_debug_extension_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) { |
| { |
| if (java_lang_Class::is_primitive(k_mirror)) { |
| return JVMTI_ERROR_ABSENT_INFORMATION; |
| } |
| Klass* k = java_lang_Class::as_Klass(k_mirror); |
| NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS); |
| if (!k->is_instance_klass()) { |
| return JVMTI_ERROR_ABSENT_INFORMATION; |
| } |
| const char* sde = InstanceKlass::cast(k)->source_debug_extension(); |
| NULL_CHECK(sde, JVMTI_ERROR_ABSENT_INFORMATION); |
| |
| { |
| *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sde)+1); |
| strcpy(*source_debug_extension_ptr, sde); |
| } |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetSourceDebugExtension */ |
| |
| // |
| // Object functions |
| // |
| |
| // hash_code_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) { |
| oop mirror = JNIHandles::resolve_external_guard(object); |
| NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT); |
| NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER); |
| |
| { |
| jint result = (jint) mirror->identity_hash(); |
| *hash_code_ptr = result; |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end GetObjectHashCode */ |
| |
| |
| // info_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) { |
| // This needs to be performed at a safepoint to gather stable data |
| // because monitor owner / waiters might not be suspended. |
| VM_GetObjectMonitorUsage op(this, JavaThread::current(), object, info_ptr); |
| VMThread::execute(&op); |
| return op.result(); |
| } /* end GetObjectMonitorUsage */ |
| |
| |
| // |
| // Field functions |
| // |
| |
| // name_ptr - null is a valid value, must be checked |
| // signature_ptr - null is a valid value, must be checked |
| // generic_ptr - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| ResourceMark rm(current_thread); |
| if (name_ptr == nullptr) { |
| // just don't return the name |
| } else { |
| const char* fieldName = fdesc_ptr->name()->as_C_string(); |
| *name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1); |
| if (*name_ptr == nullptr) |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| strcpy(*name_ptr, fieldName); |
| } |
| if (signature_ptr== nullptr) { |
| // just don't return the signature |
| } else { |
| const char* fieldSignature = fdesc_ptr->signature()->as_C_string(); |
| *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1); |
| if (*signature_ptr == nullptr) |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| strcpy(*signature_ptr, fieldSignature); |
| } |
| if (generic_ptr != nullptr) { |
| *generic_ptr = nullptr; |
| Symbol* soop = fdesc_ptr->generic_signature(); |
| if (soop != nullptr) { |
| const char* gen_sig = soop->as_C_string(); |
| if (gen_sig != nullptr) { |
| jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| strcpy(*generic_ptr, gen_sig); |
| } |
| } |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end GetFieldName */ |
| |
| |
| // declaring_class_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) { |
| |
| *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder()); |
| return JVMTI_ERROR_NONE; |
| } /* end GetFieldDeclaringClass */ |
| |
| |
| // modifiers_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) { |
| |
| AccessFlags resultFlags = fdesc_ptr->access_flags(); |
| jint result = resultFlags.as_int(); |
| *modifiers_ptr = result; |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetFieldModifiers */ |
| |
| |
| // is_synthetic_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) { |
| *is_synthetic_ptr = fdesc_ptr->is_synthetic(); |
| return JVMTI_ERROR_NONE; |
| } /* end IsFieldSynthetic */ |
| |
| |
| // |
| // Method functions |
| // |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // name_ptr - null is a valid value, must be checked |
| // signature_ptr - null is a valid value, must be checked |
| // generic_ptr - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::GetMethodName(Method* method, char** name_ptr, char** signature_ptr, char** generic_ptr) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| JavaThread* current_thread = JavaThread::current(); |
| |
| ResourceMark rm(current_thread); // get the utf8 name and signature |
| if (name_ptr == nullptr) { |
| // just don't return the name |
| } else { |
| const char* utf8_name = (const char *) method->name()->as_utf8(); |
| *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1); |
| strcpy(*name_ptr, utf8_name); |
| } |
| if (signature_ptr == nullptr) { |
| // just don't return the signature |
| } else { |
| const char* utf8_signature = (const char *) method->signature()->as_utf8(); |
| *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1); |
| strcpy(*signature_ptr, utf8_signature); |
| } |
| |
| if (generic_ptr != nullptr) { |
| *generic_ptr = nullptr; |
| Symbol* soop = method->generic_signature(); |
| if (soop != nullptr) { |
| const char* gen_sig = soop->as_C_string(); |
| if (gen_sig != nullptr) { |
| jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| strcpy(*generic_ptr, gen_sig); |
| } |
| } |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end GetMethodName */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // declaring_class_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetMethodDeclaringClass(Method* method, jclass* declaring_class_ptr) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| (*declaring_class_ptr) = get_jni_class_non_null(method->method_holder()); |
| return JVMTI_ERROR_NONE; |
| } /* end GetMethodDeclaringClass */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // modifiers_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetMethodModifiers(Method* method, jint* modifiers_ptr) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| (*modifiers_ptr) = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; |
| return JVMTI_ERROR_NONE; |
| } /* end GetMethodModifiers */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // max_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetMaxLocals(Method* method, jint* max_ptr) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| // get max stack |
| (*max_ptr) = method->max_locals(); |
| return JVMTI_ERROR_NONE; |
| } /* end GetMaxLocals */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // size_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetArgumentsSize(Method* method, jint* size_ptr) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| // get size of arguments |
| |
| (*size_ptr) = method->size_of_parameters(); |
| return JVMTI_ERROR_NONE; |
| } /* end GetArgumentsSize */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // entry_count_ptr - pre-checked for null |
| // table_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetLineNumberTable(Method* method, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| if (!method->has_linenumber_table()) { |
| return (JVMTI_ERROR_ABSENT_INFORMATION); |
| } |
| |
| // The line number table is compressed so we don't know how big it is until decompressed. |
| // Decompression is really fast so we just do it twice. |
| |
| // Compute size of table |
| jint num_entries = 0; |
| CompressedLineNumberReadStream stream(method->compressed_linenumber_table()); |
| while (stream.read_pair()) { |
| num_entries++; |
| } |
| jvmtiLineNumberEntry *jvmti_table = |
| (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry))); |
| |
| // Fill jvmti table |
| if (num_entries > 0) { |
| int index = 0; |
| CompressedLineNumberReadStream stream(method->compressed_linenumber_table()); |
| while (stream.read_pair()) { |
| jvmti_table[index].start_location = (jlocation) stream.bci(); |
| jvmti_table[index].line_number = (jint) stream.line(); |
| index++; |
| } |
| assert(index == num_entries, "sanity check"); |
| } |
| |
| // Set up results |
| (*entry_count_ptr) = num_entries; |
| (*table_ptr) = jvmti_table; |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetLineNumberTable */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // start_location_ptr - pre-checked for null |
| // end_location_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetMethodLocation(Method* method, jlocation* start_location_ptr, jlocation* end_location_ptr) { |
| |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| // get start and end location |
| (*end_location_ptr) = (jlocation) (method->code_size() - 1); |
| if (method->code_size() == 0) { |
| // there is no code so there is no start location |
| (*start_location_ptr) = (jlocation)(-1); |
| } else { |
| (*start_location_ptr) = (jlocation)(0); |
| } |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetMethodLocation */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // entry_count_ptr - pre-checked for null |
| // table_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetLocalVariableTable(Method* method, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) { |
| |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| JavaThread* current_thread = JavaThread::current(); |
| |
| // does the klass have any local variable information? |
| InstanceKlass* ik = method->method_holder(); |
| if (!ik->has_localvariable_table()) { |
| return (JVMTI_ERROR_ABSENT_INFORMATION); |
| } |
| |
| ConstantPool* constants = method->constants(); |
| NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION); |
| |
| // in the vm localvariable table representation, 6 consecutive elements in the table |
| // represent a 6-tuple of shorts |
| // [start_pc, length, name_index, descriptor_index, signature_index, index] |
| jint num_entries = method->localvariable_table_length(); |
| jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *) |
| jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry))); |
| |
| if (num_entries > 0) { |
| LocalVariableTableElement* table = method->localvariable_table_start(); |
| for (int i = 0; i < num_entries; i++) { |
| // get the 5 tuple information from the vm table |
| jlocation start_location = (jlocation) table[i].start_bci; |
| jint length = (jint) table[i].length; |
| int name_index = (int) table[i].name_cp_index; |
| int signature_index = (int) table[i].descriptor_cp_index; |
| int generic_signature_index = (int) table[i].signature_cp_index; |
| jint slot = (jint) table[i].slot; |
| |
| // get utf8 name and signature |
| char *name_buf = nullptr; |
| char *sig_buf = nullptr; |
| char *gen_sig_buf = nullptr; |
| { |
| ResourceMark rm(current_thread); |
| |
| const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8(); |
| name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1); |
| strcpy(name_buf, utf8_name); |
| |
| const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8(); |
| sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1); |
| strcpy(sig_buf, utf8_signature); |
| |
| if (generic_signature_index > 0) { |
| const char *utf8_gen_sign = (const char *) |
| constants->symbol_at(generic_signature_index)->as_utf8(); |
| gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1); |
| strcpy(gen_sig_buf, utf8_gen_sign); |
| } |
| } |
| |
| // fill in the jvmti local variable table |
| jvmti_table[i].start_location = start_location; |
| jvmti_table[i].length = length; |
| jvmti_table[i].name = name_buf; |
| jvmti_table[i].signature = sig_buf; |
| jvmti_table[i].generic_signature = gen_sig_buf; |
| jvmti_table[i].slot = slot; |
| } |
| } |
| |
| // set results |
| (*entry_count_ptr) = num_entries; |
| (*table_ptr) = jvmti_table; |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetLocalVariableTable */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // bytecode_count_ptr - pre-checked for null |
| // bytecodes_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetBytecodes(Method* method, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| |
| methodHandle mh(Thread::current(), method); |
| jint size = (jint)mh->code_size(); |
| jvmtiError err = allocate(size, bytecodes_ptr); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| |
| (*bytecode_count_ptr) = size; |
| // get byte codes |
| JvmtiClassFileReconstituter::copy_bytecodes(mh, *bytecodes_ptr); |
| |
| return JVMTI_ERROR_NONE; |
| } /* end GetBytecodes */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // is_native_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::IsMethodNative(Method* method, jboolean* is_native_ptr) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| (*is_native_ptr) = method->is_native(); |
| return JVMTI_ERROR_NONE; |
| } /* end IsMethodNative */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // is_synthetic_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::IsMethodSynthetic(Method* method, jboolean* is_synthetic_ptr) { |
| NULL_CHECK(method, JVMTI_ERROR_INVALID_METHODID); |
| (*is_synthetic_ptr) = method->is_synthetic(); |
| return JVMTI_ERROR_NONE; |
| } /* end IsMethodSynthetic */ |
| |
| |
| // method - pre-checked for validity, but may be null meaning obsolete method |
| // is_obsolete_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::IsMethodObsolete(Method* method, jboolean* is_obsolete_ptr) { |
| if (use_version_1_0_semantics() && |
| get_capabilities()->can_redefine_classes == 0) { |
| // This JvmtiEnv requested version 1.0 semantics and this function |
| // requires the can_redefine_classes capability in version 1.0 so |
| // we need to return an error here. |
| return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
| } |
| |
| if (method == nullptr || method->is_obsolete()) { |
| *is_obsolete_ptr = true; |
| } else { |
| *is_obsolete_ptr = false; |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end IsMethodObsolete */ |
| |
| // |
| // Raw Monitor functions |
| // |
| |
| // name - pre-checked for null |
| // monitor_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) { |
| JvmtiRawMonitor* rmonitor = new (std::nothrow) JvmtiRawMonitor(name); |
| NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY); |
| |
| *monitor_ptr = (jrawMonitorID)rmonitor; |
| |
| return JVMTI_ERROR_NONE; |
| } /* end CreateRawMonitor */ |
| |
| |
| // rmonitor - pre-checked for validity |
| jvmtiError |
| JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) { |
| if (Threads::number_of_threads() == 0) { |
| // Remove this monitor from pending raw monitors list |
| // if it has entered in onload or start phase. |
| JvmtiPendingMonitors::destroy(rmonitor); |
| } else { |
| Thread* thread = Thread::current(); |
| if (rmonitor->owner() == thread) { |
| // The caller owns this monitor which we are about to destroy. |
| // We exit the underlying synchronization object so that the |
| // "delete monitor" call below can work without an assertion |
| // failure on systems that don't like destroying synchronization |
| // objects that are locked. |
| int r; |
| int recursion = rmonitor->recursions(); |
| for (int i = 0; i <= recursion; i++) { |
| r = rmonitor->raw_exit(thread); |
| assert(r == JvmtiRawMonitor::M_OK, "raw_exit should have worked"); |
| if (r != JvmtiRawMonitor::M_OK) { // robustness |
| return JVMTI_ERROR_INTERNAL; |
| } |
| } |
| } |
| if (rmonitor->owner() != nullptr) { |
| // The caller is trying to destroy a monitor that is locked by |
| // someone else. While this is not forbidden by the JVMTI |
| // spec, it will cause an assertion failure on systems that don't |
| // like destroying synchronization objects that are locked. |
| // We indicate a problem with the error return (and leak the |
| // monitor's memory). |
| return JVMTI_ERROR_NOT_MONITOR_OWNER; |
| } |
| } |
| |
| delete rmonitor; |
| |
| return JVMTI_ERROR_NONE; |
| } /* end DestroyRawMonitor */ |
| |
| |
| // rmonitor - pre-checked for validity |
| jvmtiError |
| JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) { |
| if (Threads::number_of_threads() == 0) { |
| // No JavaThreads exist so JvmtiRawMonitor enter cannot be |
| // used, add this raw monitor to the pending list. |
| // The pending monitors will be actually entered when |
| // the VM is setup. |
| // See transition_pending_raw_monitors in create_vm() |
| // in thread.cpp. |
| JvmtiPendingMonitors::enter(rmonitor); |
| } else { |
| Thread* thread = Thread::current(); |
| // 8266889: raw_enter changes Java thread state, needs WXWrite |
| MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thread)); |
| rmonitor->raw_enter(thread); |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end RawMonitorEnter */ |
| |
| |
| // rmonitor - pre-checked for validity |
| jvmtiError |
| JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) { |
| jvmtiError err = JVMTI_ERROR_NONE; |
| |
| if (Threads::number_of_threads() == 0) { |
| // No JavaThreads exist so just remove this monitor from the pending list. |
| // Bool value from exit is false if rmonitor is not in the list. |
| if (!JvmtiPendingMonitors::exit(rmonitor)) { |
| err = JVMTI_ERROR_NOT_MONITOR_OWNER; |
| } |
| } else { |
| Thread* thread = Thread::current(); |
| int r = rmonitor->raw_exit(thread); |
| if (r == JvmtiRawMonitor::M_ILLEGAL_MONITOR_STATE) { |
| err = JVMTI_ERROR_NOT_MONITOR_OWNER; |
| } |
| } |
| return err; |
| } /* end RawMonitorExit */ |
| |
| |
| // rmonitor - pre-checked for validity |
| jvmtiError |
| JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) { |
| Thread* thread = Thread::current(); |
| // 8266889: raw_wait changes Java thread state, needs WXWrite |
| MACOS_AARCH64_ONLY(ThreadWXEnable __wx(WXWrite, thread)); |
| int r = rmonitor->raw_wait(millis, thread); |
| |
| switch (r) { |
| case JvmtiRawMonitor::M_INTERRUPTED: |
| return JVMTI_ERROR_INTERRUPT; |
| case JvmtiRawMonitor::M_ILLEGAL_MONITOR_STATE: |
| return JVMTI_ERROR_NOT_MONITOR_OWNER; |
| default: |
| return JVMTI_ERROR_NONE; |
| } |
| } /* end RawMonitorWait */ |
| |
| |
| // rmonitor - pre-checked for validity |
| jvmtiError |
| JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) { |
| Thread* thread = Thread::current(); |
| int r = rmonitor->raw_notify(thread); |
| |
| if (r == JvmtiRawMonitor::M_ILLEGAL_MONITOR_STATE) { |
| return JVMTI_ERROR_NOT_MONITOR_OWNER; |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end RawMonitorNotify */ |
| |
| |
| // rmonitor - pre-checked for validity |
| jvmtiError |
| JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) { |
| Thread* thread = Thread::current(); |
| int r = rmonitor->raw_notifyAll(thread); |
| |
| if (r == JvmtiRawMonitor::M_ILLEGAL_MONITOR_STATE) { |
| return JVMTI_ERROR_NOT_MONITOR_OWNER; |
| } |
| return JVMTI_ERROR_NONE; |
| } /* end RawMonitorNotifyAll */ |
| |
| |
| // |
| // JNI Function Interception functions |
| // |
| |
| |
| // function_table - pre-checked for null |
| jvmtiError |
| JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) { |
| // Copy jni function table at safepoint. |
| VM_JNIFunctionTableCopier copier(function_table); |
| VMThread::execute(&copier); |
| |
| return JVMTI_ERROR_NONE; |
| } /* end SetJNIFunctionTable */ |
| |
| |
| // function_table - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) { |
| *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface)); |
| if (*function_table == nullptr) |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface)); |
| return JVMTI_ERROR_NONE; |
| } /* end GetJNIFunctionTable */ |
| |
| |
| // |
| // Event Management functions |
| // |
| |
| jvmtiError |
| JvmtiEnv::GenerateEvents(jvmtiEvent event_type) { |
| // can only generate two event types |
| if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD && |
| event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) { |
| return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
| } |
| |
| // for compiled_method_load events we must check that the environment |
| // has the can_generate_compiled_method_load_events capability. |
| if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) { |
| if (get_capabilities()->can_generate_compiled_method_load_events == 0) { |
| return JVMTI_ERROR_MUST_POSSESS_CAPABILITY; |
| } |
| return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this); |
| } else { |
| return JvmtiCodeBlobEvents::generate_dynamic_code_events(this); |
| } |
| |
| } /* end GenerateEvents */ |
| |
| |
| // |
| // Extension Mechanism functions |
| // |
| |
| // extension_count_ptr - pre-checked for null |
| // extensions - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) { |
| return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions); |
| } /* end GetExtensionFunctions */ |
| |
| |
| // extension_count_ptr - pre-checked for null |
| // extensions - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) { |
| return JvmtiExtensions::get_events(this, extension_count_ptr, extensions); |
| } /* end GetExtensionEvents */ |
| |
| |
| // callback - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) { |
| return JvmtiExtensions::set_event_callback(this, extension_event_index, callback); |
| } /* end SetExtensionEventCallback */ |
| |
| // |
| // Timers functions |
| // |
| |
| // info_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { |
| os::current_thread_cpu_time_info(info_ptr); |
| return JVMTI_ERROR_NONE; |
| } /* end GetCurrentThreadCpuTimerInfo */ |
| |
| |
| // nanos_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) { |
| Thread* thread = Thread::current(); |
| |
| // Surprisingly the GetCurrentThreadCpuTime is used by non-JavaThread's. |
| if (thread->is_Java_thread()) { |
| if (JavaThread::cast(thread)->is_vthread_mounted()) { |
| // No support for a VirtualThread (yet). |
| return JVMTI_ERROR_UNSUPPORTED_OPERATION; |
| } |
| } |
| *nanos_ptr = os::current_thread_cpu_time(); |
| return JVMTI_ERROR_NONE; |
| } /* end GetCurrentThreadCpuTime */ |
| |
| |
| // info_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) { |
| os::thread_cpu_time_info(info_ptr); |
| return JVMTI_ERROR_NONE; |
| } /* end GetThreadCpuTimerInfo */ |
| |
| |
| // nanos_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetThreadCpuTime(jthread thread, jlong* nanos_ptr) { |
| JavaThread* current_thread = JavaThread::current(); |
| ThreadsListHandle tlh(current_thread); |
| JavaThread* java_thread = nullptr; |
| oop thread_oop = nullptr; |
| |
| jvmtiError err = get_threadOop_and_JavaThread(tlh.list(), thread, &java_thread, &thread_oop); |
| |
| if (thread_oop != nullptr && thread_oop->is_a(vmClasses::BaseVirtualThread_klass())) { |
| // No support for virtual threads (yet). |
| return JVMTI_ERROR_UNSUPPORTED_OPERATION; |
| } |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| NULL_CHECK(nanos_ptr, JVMTI_ERROR_NULL_POINTER); |
| |
| *nanos_ptr = os::thread_cpu_time(java_thread); |
| return JVMTI_ERROR_NONE; |
| } /* end GetThreadCpuTime */ |
| |
| |
| // info_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) { |
| os::javaTimeNanos_info(info_ptr); |
| return JVMTI_ERROR_NONE; |
| } /* end GetTimerInfo */ |
| |
| |
| // nanos_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetTime(jlong* nanos_ptr) { |
| *nanos_ptr = os::javaTimeNanos(); |
| return JVMTI_ERROR_NONE; |
| } /* end GetTime */ |
| |
| |
| // processor_count_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) { |
| *processor_count_ptr = os::active_processor_count(); |
| return JVMTI_ERROR_NONE; |
| } /* end GetAvailableProcessors */ |
| |
| jvmtiError |
| JvmtiEnv::SetHeapSamplingInterval(jint sampling_interval) { |
| if (sampling_interval < 0) { |
| return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
| } |
| ThreadHeapSampler::set_sampling_interval(sampling_interval); |
| return JVMTI_ERROR_NONE; |
| } /* end SetHeapSamplingInterval */ |
| |
| // |
| // System Properties functions |
| // |
| |
| // count_ptr - pre-checked for null |
| // property_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) { |
| jvmtiError err = JVMTI_ERROR_NONE; |
| |
| // Get the number of readable properties. |
| *count_ptr = Arguments::PropertyList_readable_count(Arguments::system_properties()); |
| |
| // Allocate memory to hold the exact number of readable properties. |
| err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr); |
| if (err != JVMTI_ERROR_NONE) { |
| return err; |
| } |
| int readable_count = 0; |
| // Loop through the system properties until all the readable properties are found. |
| for (SystemProperty* p = Arguments::system_properties(); p != nullptr && readable_count < *count_ptr; p = p->next()) { |
| if (p->readable()) { |
| const char *key = p->key(); |
| char **tmp_value = *property_ptr+readable_count; |
| readable_count++; |
| err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value); |
| if (err == JVMTI_ERROR_NONE) { |
| strcpy(*tmp_value, key); |
| } else { |
| // clean up previously allocated memory. |
| for (int j = 0; j < readable_count; j++) { |
| Deallocate((unsigned char*)*property_ptr+j); |
| } |
| Deallocate((unsigned char*)property_ptr); |
| break; |
| } |
| } |
| } |
| assert(err != JVMTI_ERROR_NONE || readable_count == *count_ptr, "Bad readable property count"); |
| return err; |
| } /* end GetSystemProperties */ |
| |
| |
| // property - pre-checked for null |
| // value_ptr - pre-checked for null |
| jvmtiError |
| JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) { |
| jvmtiError err = JVMTI_ERROR_NONE; |
| const char *value; |
| |
| // Return JVMTI_ERROR_NOT_AVAILABLE if property is not readable or doesn't exist. |
| value = Arguments::PropertyList_get_readable_value(Arguments::system_properties(), property); |
| if (value == nullptr) { |
| err = JVMTI_ERROR_NOT_AVAILABLE; |
| } else { |
| err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr); |
| if (err == JVMTI_ERROR_NONE) { |
| strcpy(*value_ptr, value); |
| } |
| } |
| return err; |
| } /* end GetSystemProperty */ |
| |
| |
| // property - pre-checked for null |
| // value - null is a valid value, must be checked |
| jvmtiError |
| JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) { |
| for (SystemProperty* p = Arguments::system_properties(); p != nullptr; p = p->next()) { |
| if (strcmp(property, p->key()) == 0) { |
| if (p->writeable()) { |
| if (p->set_value(value_ptr, AllocFailStrategy::RETURN_NULL)) { |
| return JVMTI_ERROR_NONE; |
| } else { |
| return JVMTI_ERROR_OUT_OF_MEMORY; |
| } |
| } else { |
| // We found a property, but it's not writeable |
| return JVMTI_ERROR_NOT_AVAILABLE; |
| } |
| } |
| } |
| |
| // We cannot find a property of the given name |
| return JVMTI_ERROR_NOT_AVAILABLE; |
| } /* end SetSystemProperty */ |
