graal-jvmci-8: src/share/vm/classfile/systemDictionary.cpp comparison

comparison src/share/vm/classfile/systemDictionary.cpp @ 6948:e522a00b91aa

Merge with http://hg.openjdk.java.net/hsx/hsx25/hotspot/ after NPG - C++ build works

author	Doug Simon <doug.simon@oracle.com>
date	Mon, 12 Nov 2012 23:14:12 +0100
parents	957c266d8bc5 633ba56cb013
children	2cb439954abf

comparison

equal deleted inserted replaced

-:ae13cc658b80
+:e522a00b91aa
 * questions.
 *
 */
 #include "precompiled.hpp"
+#include "classfile/classLoaderData.inline.hpp"
 #include "classfile/dictionary.hpp"
 #include "classfile/javaClasses.hpp"
 #include "classfile/loaderConstraints.hpp"
 #include "classfile/placeholders.hpp"
 #include "classfile/resolutionErrors.hpp"
 #include "memory/gcLocker.hpp"
 #include "memory/oopFactory.hpp"
 #include "oops/instanceKlass.hpp"
 #include "oops/instanceRefKlass.hpp"
 #include "oops/klass.inline.hpp"
-#include "oops/methodDataOop.hpp"
+#include "oops/methodData.hpp"
 #include "oops/objArrayKlass.hpp"
 #include "oops/oop.inline.hpp"
 #include "oops/oop.inline2.hpp"
 #include "oops/typeArrayKlass.hpp"
 #include "prims/jvmtiEnvBase.hpp"
 const int   SystemDictionary::_primelist[_prime_array_size] = {1009,2017,4049,5051,10103,
 20201,40423,99991};
 oop         SystemDictionary::_system_loader_lock_obj     =  NULL;
-klassOop    SystemDictionary::_well_known_klasses[SystemDictionary::WKID_LIMIT]
+Klass*      SystemDictionary::_well_known_klasses[SystemDictionary::WKID_LIMIT]
 =  { NULL /*, NULL...*/ };
-klassOop    SystemDictionary::_box_klasses[T_VOID+1]      =  { NULL /*, NULL...*/ };
+Klass*      SystemDictionary::_box_klasses[T_VOID+1]      =  { NULL /*, NULL...*/ };
 oop         SystemDictionary::_java_system_loader         =  NULL;
 bool        SystemDictionary::_has_loadClassInternal      =  false;
 bool        SystemDictionary::_has_checkPackageAccess     =  false;
 // lazily initialized klass variables
-volatile klassOop    SystemDictionary::_abstract_ownable_synchronizer_klass = NULL;
+Klass* volatile SystemDictionary::_abstract_ownable_synchronizer_klass = NULL;
 // ----------------------------------------------------------------------------
 // Java-level SystemLoader
 _java_system_loader = (oop)result.get_jobject();
 }
+ClassLoaderData* SystemDictionary::register_loader(Handle class_loader) {
+if (class_loader() == NULL) return ClassLoaderData::the_null_class_loader_data();
+return ClassLoaderDataGraph::find_or_create(class_loader);
+}
 // ----------------------------------------------------------------------------
 // debugging
 #ifdef ASSERT
 // ----------------------------------------------------------------------------
 // Resolving of classes
 // Forwards to resolve_or_null
-klassOop SystemDictionary::resolve_or_fail(Symbol* class_name, Handle class_loader, Handle protection_domain, bool throw_error, TRAPS) {
+Klass* SystemDictionary::resolve_or_fail(Symbol* class_name, Handle class_loader, Handle protection_domain, bool throw_error, TRAPS) {
-klassOop klass = resolve_or_null(class_name, class_loader, protection_domain, THREAD);
+Klass* klass = resolve_or_null(class_name, class_loader, protection_domain, THREAD);
 if (HAS_PENDING_EXCEPTION || klass == NULL) {
 KlassHandle k_h(THREAD, klass);
 // can return a null klass
 klass = handle_resolution_exception(class_name, class_loader, protection_domain, throw_error, k_h, THREAD);
 }
 return klass;
 }
-klassOop SystemDictionary::handle_resolution_exception(Symbol* class_name, Handle class_loader, Handle protection_domain, bool throw_error, KlassHandle klass_h, TRAPS) {
+Klass* SystemDictionary::handle_resolution_exception(Symbol* class_name, Handle class_loader, Handle protection_domain, bool throw_error, KlassHandle klass_h, TRAPS) {
 if (HAS_PENDING_EXCEPTION) {
 // If we have a pending exception we forward it to the caller, unless throw_error is true,
 // in which case we have to check whether the pending exception is a ClassNotFoundException,
 // and if so convert it to a NoClassDefFoundError
 // And chain the original ClassNotFoundException
 THROW_MSG_0(vmSymbols::java_lang_NoClassDefFoundError(), class_name->as_C_string());
 } else {
 THROW_MSG_0(vmSymbols::java_lang_ClassNotFoundException(), class_name->as_C_string());
 }
 }
-return (klassOop)klass_h();
+return (Klass*)klass_h();
 }
-klassOop SystemDictionary::resolve_or_fail(Symbol* class_name,
+Klass* SystemDictionary::resolve_or_fail(Symbol* class_name,
 bool throw_error, TRAPS)
 {
 return resolve_or_fail(class_name, Handle(), Handle(), throw_error, THREAD);
 }
 // Forwards to resolve_instance_class_or_null
-klassOop SystemDictionary::resolve_or_null(Symbol* class_name, Handle class_loader, Handle protection_domain, TRAPS) {
+Klass* SystemDictionary::resolve_or_null(Symbol* class_name, Handle class_loader, Handle protection_domain, TRAPS) {
 assert(!THREAD->is_Compiler_thread(),
 err_msg("can not load classes with compiler thread: class=%s, classloader=%s",
 class_name->as_C_string(),
-class_loader.is_null() ? "null" : class_loader->klass()->klass_part()->name()->as_C_string()));
+class_loader.is_null() ? "null" : class_loader->klass()->name()->as_C_string()));
 if (FieldType::is_array(class_name)) {
 return resolve_array_class_or_null(class_name, class_loader, protection_domain, CHECK_NULL);
 } else if (FieldType::is_obj(class_name)) {
 ResourceMark rm(THREAD);
 // Ignore wrapping L and ;.
 } else {
 return resolve_instance_class_or_null(class_name, class_loader, protection_domain, CHECK_NULL);
 }
 }
-klassOop SystemDictionary::resolve_or_null(Symbol* class_name, TRAPS) {
+Klass* SystemDictionary::resolve_or_null(Symbol* class_name, TRAPS) {
 return resolve_or_null(class_name, Handle(), Handle(), THREAD);
 }
 // Forwards to resolve_instance_class_or_null
-klassOop SystemDictionary::resolve_array_class_or_null(Symbol* class_name,
+Klass* SystemDictionary::resolve_array_class_or_null(Symbol* class_name,
 Handle class_loader,
 Handle protection_domain,
 TRAPS) {
 assert(FieldType::is_array(class_name), "must be array");
-klassOop k = NULL;
+Klass* k = NULL;
 FieldArrayInfo fd;
 // dimension and object_key in FieldArrayInfo are assigned as a side-effect
 // of this call
 BasicType t = FieldType::get_array_info(class_name, fd, CHECK_NULL);
 if (t == T_OBJECT) {
 if (k != NULL) {
 k = Klass::cast(k)->array_klass(fd.dimension(), CHECK_NULL);
 }
 } else {
 k = Universe::typeArrayKlassObj(t);
-k = typeArrayKlass::cast(k)->array_klass(fd.dimension(), CHECK_NULL);
+k = TypeArrayKlass::cast(k)->array_klass(fd.dimension(), CHECK_NULL);
 }
 return k;
 }
 //      4.3 calls resolve_super_or_fail Super in parallel on own thread T2
 //      4.4 finds T2, Super -> throws class circularity
 // Must be called, even if superclass is null, since this is
 // where the placeholder entry is created which claims this
 // thread is loading this class/classloader.
-klassOop SystemDictionary::resolve_super_or_fail(Symbol* child_name,
+Klass* SystemDictionary::resolve_super_or_fail(Symbol* child_name,
 Symbol* class_name,
 Handle class_loader,
 Handle protection_domain,
 bool is_superclass,
 TRAPS) {
-// Try to get one of the well-known klasses.
-// They are trusted, and do not participate in circularities.
-if (LinkWellKnownClasses) {
-klassOop k = find_well_known_klass(class_name);
-if (k != NULL) {
-return k;
-}
-}
 // Double-check, if child class is already loaded, just return super-class,interface
 // Don't add a placedholder if already loaded, i.e. already in system dictionary
 // Make sure there's a placeholder for the *child* before resolving.
 // Used as a claim that this thread is currently loading superclass/classloader
 // Used here for ClassCircularity checks and also for heap verification
-// (every instanceKlass in the heap needs to be in the system dictionary
+// (every InstanceKlass in the heap needs to be in the system dictionary
 // or have a placeholder).
 // Must check ClassCircularity before checking if super class is already loaded
 //
 // We might not already have a placeholder if this child_name was
 // first seen via resolve_from_stream (jni_DefineClass or JVM_DefineClass);
 // the name of the class might not be known until the stream is actually
 // parsed.
 // Bugs 4643874, 4715493
 // compute_hash can have a safepoint
-unsigned int d_hash = dictionary()->compute_hash(child_name, class_loader);
+ClassLoaderData* loader_data = class_loader_data(class_loader);
+unsigned int d_hash = dictionary()->compute_hash(child_name, loader_data);
 int d_index = dictionary()->hash_to_index(d_hash);
-unsigned int p_hash = placeholders()->compute_hash(child_name, class_loader);
+unsigned int p_hash = placeholders()->compute_hash(child_name, loader_data);
 int p_index = placeholders()->hash_to_index(p_hash);
 // can't throw error holding a lock
 bool child_already_loaded = false;
 bool throw_circularity_error = false;
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
-klassOop childk = find_class(d_index, d_hash, child_name, class_loader);
+Klass* childk = find_class(d_index, d_hash, child_name, loader_data);
-klassOop quicksuperk;
+Klass* quicksuperk;
 // to support // loading: if child done loading, just return superclass
 // if class_name, & class_loader don't match:
 // if initial define, SD update will give LinkageError
 // if redefine: compare_class_versions will give HIERARCHY_CHANGED
 // so we don't throw an exception here.
 // see: nsk redefclass014 & java.lang.instrument Instrument032
 if ((childk != NULL ) && (is_superclass) &&
-((quicksuperk = instanceKlass::cast(childk)->super()) != NULL) &&
+((quicksuperk = InstanceKlass::cast(childk)->super()) != NULL) &&
 ((Klass::cast(quicksuperk)->name() == class_name) &&
 (Klass::cast(quicksuperk)->class_loader()  == class_loader()))) {
 return quicksuperk;
 } else {
-PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, child_name, class_loader);
+PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, child_name, loader_data);
 if (probe && probe->check_seen_thread(THREAD, PlaceholderTable::LOAD_SUPER)) {
 throw_circularity_error = true;
 }
 }
 if (!throw_circularity_error) {
-PlaceholderEntry* newprobe = placeholders()->find_and_add(p_index, p_hash, child_name, class_loader, PlaceholderTable::LOAD_SUPER, class_name, THREAD);
+PlaceholderEntry* newprobe = placeholders()->find_and_add(p_index, p_hash, child_name, loader_data, PlaceholderTable::LOAD_SUPER, class_name, THREAD);
 }
 }
 if (throw_circularity_error) {
 ResourceMark rm(THREAD);
 THROW_MSG_0(vmSymbols::java_lang_ClassCircularityError(), child_name->as_C_string());
 }
 // java.lang.Object should have been found above
 assert(class_name != NULL, "null super class for resolving");
 // Resolve the super class or interface, check results on return
-klassOop superk = NULL;
+Klass* superk = NULL;
 superk = SystemDictionary::resolve_or_null(class_name,
 class_loader,
 protection_domain,
 THREAD);
 // Note: clean up of placeholders currently in callers of
 // resolve_super_or_fail - either at update_dictionary time
 // or on error
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
-PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, child_name, class_loader);
+PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, child_name, loader_data);
 if (probe != NULL) {
 probe->remove_seen_thread(THREAD, PlaceholderTable::LOAD_SUPER);
 }
 }
 if (HAS_PENDING_EXCEPTION || superk_h() == NULL) {
 tty->print_cr("Checking package access");
 tty->print(" - class loader:      "); class_loader()->print_value_on(tty);      tty->cr();
 tty->print(" - protection domain: "); protection_domain()->print_value_on(tty); tty->cr();
 tty->print(" - loading:           "); klass()->print_value_on(tty);             tty->cr();
 }
-assert(class_loader() != NULL, "should not have non-null protection domain for null classloader");
 KlassHandle system_loader(THREAD, SystemDictionary::ClassLoader_klass());
 JavaCalls::call_special(&result,
 class_loader,
 system_loader,
 // If no exception has been thrown, we have validated the protection domain
 // Insert the protection domain of the initiating class into the set.
 {
 // We recalculate the entry here -- we've called out to java since
 // the last time it was calculated.
+ClassLoaderData* loader_data = class_loader_data(class_loader);
 Symbol*  kn = klass->name();
-unsigned int d_hash = dictionary()->compute_hash(kn, class_loader);
+unsigned int d_hash = dictionary()->compute_hash(kn, loader_data);
 int d_index = dictionary()->hash_to_index(d_hash);
 MutexLocker mu(SystemDictionary_lock, THREAD);
 {
 // Note that we have an entry, and entries can be deleted only during GC,
 // We're using a No_Safepoint_Verifier to catch any place where we
 // might potentially do a GC at all.
 // SystemDictionary::do_unloading() asserts that classes are only
 // unloaded at a safepoint.
 No_Safepoint_Verifier nosafepoint;
-dictionary()->add_protection_domain(d_index, d_hash, klass, class_loader,
+dictionary()->add_protection_domain(d_index, d_hash, klass, loader_data,
 protection_domain, THREAD);
 }
 }
 }
 // even in non-circularity situations.
 // Note: only one thread can define the class, but multiple can resolve
 // Note: must call resolve_super_or_fail even if null super -
 // to force placeholder entry creation for this class for circularity detection
 // Caller must check for pending exception
-// Returns non-null klassOop if other thread has completed load
+// Returns non-null Klass* if other thread has completed load
 // and we are done,
-// If return null klassOop and no pending exception, the caller must load the class
+// If return null Klass* and no pending exception, the caller must load the class
 instanceKlassHandle SystemDictionary::handle_parallel_super_load(
 Symbol* name, Symbol* superclassname, Handle class_loader,
 Handle protection_domain, Handle lockObject, TRAPS) {
 instanceKlassHandle nh = instanceKlassHandle(); // null Handle
-unsigned int d_hash = dictionary()->compute_hash(name, class_loader);
+ClassLoaderData* loader_data = class_loader_data(class_loader);
+unsigned int d_hash = dictionary()->compute_hash(name, loader_data);
 int d_index = dictionary()->hash_to_index(d_hash);
-unsigned int p_hash = placeholders()->compute_hash(name, class_loader);
+unsigned int p_hash = placeholders()->compute_hash(name, loader_data);
 int p_index = placeholders()->hash_to_index(p_hash);
 // superk is not used, resolve_super called for circularity check only
 // This code is reached in two situations. One if this thread
 // is loading the same class twice (e.g. ClassCircularity, or
 // java.lang.instrument).
 // The second is if another thread started the resolve_super first
 // and has not yet finished.
 // In both cases the original caller will clean up the placeholder
 // entry on error.
-klassOop superk = SystemDictionary::resolve_super_or_fail(name,
+Klass* superk = SystemDictionary::resolve_super_or_fail(name,
 superclassname,
 class_loader,
 protection_domain,
 true,
 CHECK_(nh));
 // We don't redefine the class, so we just need to clean up if there
 // was not an error (don't want to modify any system dictionary
 // data structures).
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
-placeholders()->find_and_remove(p_index, p_hash, name, class_loader, THREAD);
+placeholders()->find_and_remove(p_index, p_hash, name, loader_data, THREAD);
 SystemDictionary_lock->notify_all();
 }
 // parallelCapable class loaders do NOT wait for parallel superclass loads to complete
 // Serial class loaders and bootstrap classloader do wait for superclass loads
 if (!class_loader.is_null() && is_parallelCapable(class_loader)) {
 MutexLocker mu(SystemDictionary_lock, THREAD);
 // Check if classloading completed while we were loading superclass or waiting
-klassOop check = find_class(d_index, d_hash, name, class_loader);
+Klass* check = find_class(d_index, d_hash, name, loader_data);
 if (check != NULL) {
 // Klass is already loaded, so just return it
 return(instanceKlassHandle(THREAD, check));
 } else {
 return nh;
 bool super_load_in_progress = true;
 PlaceholderEntry* placeholder;
 while (super_load_in_progress) {
 MutexLocker mu(SystemDictionary_lock, THREAD);
 // Check if classloading completed while we were loading superclass or waiting
-klassOop check = find_class(d_index, d_hash, name, class_loader);
+Klass* check = find_class(d_index, d_hash, name, loader_data);
 if (check != NULL) {
 // Klass is already loaded, so just return it
 return(instanceKlassHandle(THREAD, check));
 } else {
-placeholder = placeholders()->get_entry(p_index, p_hash, name, class_loader);
+placeholder = placeholders()->get_entry(p_index, p_hash, name, loader_data);
 if (placeholder && placeholder->super_load_in_progress() ){
 // Before UnsyncloadClass:
 // We only get here if the application has released the
 // classloader lock when another thread was in the middle of loading a
 // superclass/superinterface for this class, and now
 // load a class should be the one to complete the loading
 // with the classfile it initially expected.
 // This logic has the current thread wait once it has done
 // all the superclass/superinterface loading it can, until
 // the original thread completes the class loading or fails
-// If it completes we will use the resulting instanceKlass
+// If it completes we will use the resulting InstanceKlass
 // which we will find below in the systemDictionary.
 // We also get here for parallel bootstrap classloader
 if (class_loader.is_null()) {
 SystemDictionary_lock->wait();
 } else {
 }
 return (nh);
 }
-klassOop SystemDictionary::resolve_instance_class_or_null(Symbol* name, Handle class_loader, Handle protection_domain, TRAPS) {
+Klass* SystemDictionary::resolve_instance_class_or_null(Symbol* name, Handle class_loader, Handle protection_domain, TRAPS) {
 assert(name != NULL && !FieldType::is_array(name) &&
 !FieldType::is_obj(name), "invalid class name");
 // UseNewReflection
 // Fix for 4474172; see evaluation for more details
 class_loader = Handle(THREAD, java_lang_ClassLoader::non_reflection_class_loader(class_loader()));
+ClassLoaderData *loader_data = register_loader(class_loader);
 // Do lookup to see if class already exist and the protection domain
 // has the right access
-unsigned int d_hash = dictionary()->compute_hash(name, class_loader);
+unsigned int d_hash = dictionary()->compute_hash(name, loader_data);
 int d_index = dictionary()->hash_to_index(d_hash);
-klassOop probe = dictionary()->find(d_index, d_hash, name, class_loader,
+Klass* probe = dictionary()->find(d_index, d_hash, name, loader_data,
 protection_domain, THREAD);
 if (probe != NULL) return probe;
 // Non-bootstrap class loaders will call out to class loader and
 bool DoObjectLock = true;
 if (is_parallelCapable(class_loader)) {
 DoObjectLock = false;
 }
-unsigned int p_hash = placeholders()->compute_hash(name, class_loader);
+unsigned int p_hash = placeholders()->compute_hash(name, loader_data);
 int p_index = placeholders()->hash_to_index(p_hash);
 // Class is not in SystemDictionary so we have to do loading.
 // Make sure we are synchronized on the class loader before we proceed
 Handle lockObject = compute_loader_lock_object(class_loader, THREAD);
 PlaceholderEntry* placeholder;
 Symbol* superclassname = NULL;
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
-klassOop check = find_class(d_index, d_hash, name, class_loader);
+Klass* check = find_class(d_index, d_hash, name, loader_data);
 if (check != NULL) {
 // Klass is already loaded, so just return it
 class_has_been_loaded = true;
 k = instanceKlassHandle(THREAD, check);
 } else {
-placeholder = placeholders()->get_entry(p_index, p_hash, name, class_loader);
+placeholder = placeholders()->get_entry(p_index, p_hash, name, loader_data);
 if (placeholder && placeholder->super_load_in_progress()) {
 super_load_in_progress = true;
 if (placeholder->havesupername() == true) {
 superclassname = placeholder->supername();
 havesupername = true;
 //    Allow parallel classloading of a class/classloader pair
 bool throw_circularity_error = false;
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
 if (class_loader.is_null() || !is_parallelCapable(class_loader)) {
-PlaceholderEntry* oldprobe = placeholders()->get_entry(p_index, p_hash, name, class_loader);
+PlaceholderEntry* oldprobe = placeholders()->get_entry(p_index, p_hash, name, loader_data);
 if (oldprobe) {
 // only need check_seen_thread once, not on each loop
 // 6341374 java/lang/Instrument with -Xcomp
 if (oldprobe->check_seen_thread(THREAD, PlaceholderTable::LOAD_INSTANCE)) {
 throw_circularity_error = true;
 // case 2: traditional with broken classloader lock. wait on first
 // requestor.
 double_lock_wait(lockObject, THREAD);
 }
 // Check if classloading completed while we were waiting
-klassOop check = find_class(d_index, d_hash, name, class_loader);
+Klass* check = find_class(d_index, d_hash, name, loader_data);
 if (check != NULL) {
 // Klass is already loaded, so just return it
 k = instanceKlassHandle(THREAD, check);
 class_has_been_loaded = true;
 }
 // check if other thread failed to load and cleaned up
-oldprobe = placeholders()->get_entry(p_index, p_hash, name, class_loader);
+oldprobe = placeholders()->get_entry(p_index, p_hash, name, loader_data);
 }
 }
 }
 }
 // All cases: add LOAD_INSTANCE
 // case 3: UnsyncloadClass || case 5: parallelCapable: allow competing threads to try
 // LOAD_INSTANCE in parallel
 // add placeholder entry even if error - callers will remove on error
 if (!throw_circularity_error && !class_has_been_loaded) {
-PlaceholderEntry* newprobe = placeholders()->find_and_add(p_index, p_hash, name, class_loader, PlaceholderTable::LOAD_INSTANCE, NULL, THREAD);
+PlaceholderEntry* newprobe = placeholders()->find_and_add(p_index, p_hash, name, loader_data, PlaceholderTable::LOAD_INSTANCE, NULL, THREAD);
 // For class loaders that do not acquire the classloader object lock,
 // if they did not catch another thread holding LOAD_INSTANCE,
 // need a check analogous to the acquire ObjectLocker/find_class
 // i.e. now that we hold the LOAD_INSTANCE token on loading this class/CL
 // one final check if the load has already completed
 // class loaders holding the ObjectLock shouldn't find the class here
-klassOop check = find_class(d_index, d_hash, name, class_loader);
+Klass* check = find_class(d_index, d_hash, name, loader_data);
 if (check != NULL) {
 // Klass is already loaded, so just return it
 k = instanceKlassHandle(THREAD, check);
 class_has_been_loaded = true;
 newprobe->remove_seen_thread(THREAD, PlaceholderTable::LOAD_INSTANCE);
-placeholders()->find_and_remove(p_index, p_hash, name, class_loader, THREAD);
+placeholders()->find_and_remove(p_index, p_hash, name, loader_data, THREAD);
 SystemDictionary_lock->notify_all();
 }
 }
 }
 // must throw error outside of owning lock
 // For UnsyncloadClass only
 // If they got a linkageError, check if a parallel class load succeeded.
 // If it did, then for bytecode resolution the specification requires
 // that we return the same result we did for the other thread, i.e. the
-// successfully loaded instanceKlass
+// successfully loaded InstanceKlass
 // Should not get here for classloaders that support parallelism
 // with the new cleaner mechanism, even with AllowParallelDefineClass
 // Bootstrap goes through here to allow for an extra guarantee check
 if (UnsyncloadClass || (class_loader.is_null())) {
 if (k.is_null() && HAS_PENDING_EXCEPTION
 && PENDING_EXCEPTION->is_a(SystemDictionary::LinkageError_klass())) {
 MutexLocker mu(SystemDictionary_lock, THREAD);
-klassOop check = find_class(d_index, d_hash, name, class_loader);
+Klass* check = find_class(d_index, d_hash, name, loader_data);
 if (check != NULL) {
 // Klass is already loaded, so just use it
 k = instanceKlassHandle(THREAD, check);
 CLEAR_PENDING_EXCEPTION;
 guarantee((!class_loader.is_null()), "dup definition for bootstrap loader?");
 // This cleans up LOAD_INSTANCE entries
 // It also cleans up LOAD_SUPER entries on errors from
 // calling load_instance_class
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
-PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, name, class_loader);
+PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, name, loader_data);
 if (probe != NULL) {
 probe->remove_seen_thread(THREAD, PlaceholderTable::LOAD_INSTANCE);
-placeholders()->find_and_remove(p_index, p_hash, name, class_loader, THREAD);
+placeholders()->find_and_remove(p_index, p_hash, name, loader_data, THREAD);
 SystemDictionary_lock->notify_all();
 }
 }
 // If everything was OK (no exceptions, no null return value), and
 }
 if (HAS_PENDING_EXCEPTION || k.is_null()) {
 // On error, clean up placeholders
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
-placeholders()->find_and_remove(p_index, p_hash, name, class_loader, THREAD);
+placeholders()->find_and_remove(p_index, p_hash, name, loader_data, THREAD);
 SystemDictionary_lock->notify_all();
 }
 return NULL;
 }
 }
 }
 #ifdef ASSERT
 {
-Handle loader (THREAD, k->class_loader());
+ClassLoaderData* loader_data = k->class_loader_data();
 MutexLocker mu(SystemDictionary_lock, THREAD);
-oop kk = find_class(name, loader);
+Klass* kk = find_class(name, loader_data);
 assert(kk == k(), "should be present in dictionary");
 }
 #endif
 // return if the protection domain in NULL
 // might potentially do a GC at all.
 // SystemDictionary::do_unloading() asserts that classes are only
 // unloaded at a safepoint.
 No_Safepoint_Verifier nosafepoint;
 if (dictionary()->is_valid_protection_domain(d_index, d_hash, name,
-class_loader,
+loader_data,
 protection_domain)) {
 return k();
 }
 }
 // Verify protection domain. If it fails an exception is thrown
-validate_protection_domain(k, class_loader, protection_domain, CHECK_(klassOop(NULL)));
+validate_protection_domain(k, class_loader, protection_domain, CHECK_NULL);
 return k();
 }
 //
 // Callers should be aware that an entry could be added just after
 // _dictionary->bucket(index) is read here, so the caller will not see
 // the new entry.
-klassOop SystemDictionary::find(Symbol* class_name,
+Klass* SystemDictionary::find(Symbol* class_name,
 Handle class_loader,
 Handle protection_domain,
 TRAPS) {
 // UseNewReflection
 // The result of this call should be consistent with the result
 // of the call to resolve_instance_class_or_null().
 // See evaluation 6790209 and 4474172 for more details.
 class_loader = Handle(THREAD, java_lang_ClassLoader::non_reflection_class_loader(class_loader()));
+ClassLoaderData* loader_data = register_loader(class_loader);
-unsigned int d_hash = dictionary()->compute_hash(class_name, class_loader);
+unsigned int d_hash = dictionary()->compute_hash(class_name, loader_data);
 int d_index = dictionary()->hash_to_index(d_hash);
 {
 // Note that we have an entry, and entries can be deleted only during GC,
 // so we cannot allow GC to occur while we're holding this entry.
 // We're using a No_Safepoint_Verifier to catch any place where we
 // might potentially do a GC at all.
 // SystemDictionary::do_unloading() asserts that classes are only
 // unloaded at a safepoint.
 No_Safepoint_Verifier nosafepoint;
-return dictionary()->find(d_index, d_hash, class_name, class_loader,
+return dictionary()->find(d_index, d_hash, class_name, loader_data,
 protection_domain, THREAD);
 }
 }
 // Look for a loaded instance or array klass by name.  Do not do any loading.
 // return NULL in case of error.
-klassOop SystemDictionary::find_instance_or_array_klass(Symbol* class_name,
+Klass* SystemDictionary::find_instance_or_array_klass(Symbol* class_name,
 Handle class_loader,
 Handle protection_domain,
 TRAPS) {
-klassOop k = NULL;
+Klass* k = NULL;
 assert(class_name != NULL, "class name must be non NULL");
-// Try to get one of the well-known klasses.
-if (LinkWellKnownClasses) {
-k = find_well_known_klass(class_name);
-if (k != NULL) {
-return k;
-}
-}
 if (FieldType::is_array(class_name)) {
 // The name refers to an array.  Parse the name.
 // dimension and object_key in FieldArrayInfo are assigned as a
 // side-effect of this call
 k = find(class_name, class_loader, protection_domain, THREAD);
 }
 return k;
 }
-// Quick range check for names of well-known classes:
-static Symbol* wk_klass_name_limits[2] = {NULL, NULL};
-#ifndef PRODUCT
-static int find_wkk_calls, find_wkk_probes, find_wkk_wins;
-// counts for "hello world": 3983, 1616, 1075
-//  => 60% hit after limit guard, 25% total win rate
-#endif
-klassOop SystemDictionary::find_well_known_klass(Symbol* class_name) {
-// A bounds-check on class_name will quickly get a negative result.
-NOT_PRODUCT(find_wkk_calls++);
-if (class_name >= wk_klass_name_limits[0] &&
-class_name <= wk_klass_name_limits[1]) {
-NOT_PRODUCT(find_wkk_probes++);
-vmSymbols::SID sid = vmSymbols::find_sid(class_name);
-if (sid != vmSymbols::NO_SID) {
-klassOop k = NULL;
-switch (sid) {
-#define WK_KLASS_CASE(name, symbol, ignore_option) \
-case vmSymbols::VM_SYMBOL_ENUM_NAME(symbol): \
-k = WK_KLASS(name); break;
-WK_KLASSES_DO(WK_KLASS_CASE)
-#undef WK_KLASS_CASE
-}
-NOT_PRODUCT(if (k != NULL)  find_wkk_wins++);
-return k;
-}
-}
-return NULL;
-}
 // Note: this method is much like resolve_from_stream, but
 // updates no supplemental data structures.
 // TODO consolidate the two methods with a helper routine?
-klassOop SystemDictionary::parse_stream(Symbol* class_name,
+Klass* SystemDictionary::parse_stream(Symbol* class_name,
 Handle class_loader,
 Handle protection_domain,
 ClassFileStream* st,
 KlassHandle host_klass,
 GrowableArray<Handle>* cp_patches,
 TRAPS) {
 TempNewSymbol parsed_name = NULL;
 // Parse the stream. Note that we do this even though this klass might
 // already be present in the SystemDictionary, otherwise we would not
 // throw potential ClassFormatErrors.
 // was an error or not (don't want to modify any system dictionary
 // data structures).
 // Parsed name could be null if we threw an error before we got far
 // enough along to parse it -- in that case, there is nothing to clean up.
 if (parsed_name != NULL) {
+ClassLoaderData* loader_data = class_loader_data(class_loader);
 unsigned int p_hash = placeholders()->compute_hash(parsed_name,
-class_loader);
+loader_data);
 int p_index = placeholders()->hash_to_index(p_hash);
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
-placeholders()->find_and_remove(p_index, p_hash, parsed_name, class_loader, THREAD);
+placeholders()->find_and_remove(p_index, p_hash, parsed_name, loader_data, THREAD);
 SystemDictionary_lock->notify_all();
 }
 }
 if (host_klass.not_null() && k.not_null()) {
 assert(EnableInvokeDynamic, "");
 // If it's anonymous, initialize it now, since nobody else will.
+k->class_loader_data()->record_dependency(host_klass(), CHECK_NULL);
 k->set_host_klass(host_klass());
 {
 MutexLocker mu_r(Compile_lock, THREAD);
 add_to_hierarchy(k, CHECK_NULL); // No exception, but can block
 // But, do not add to system dictionary.
 }
+// Rewrite and patch constant pool here.
+k->link_class(THREAD);
+if (cp_patches != NULL) {
+k->constants()->patch_resolved_references(cp_patches);
+}
 k->eager_initialize(THREAD);
 // notify jvmti
 if (JvmtiExport::should_post_class_load()) {
 assert(THREAD->is_Java_thread(), "thread->is_Java_thread()");
 JvmtiExport::post_class_load((JavaThread *) THREAD, k());
 }
 }
+assert(host_klass.not_null() || cp_patches == NULL,
+"cp_patches only found with host_klass");
 return k();
 }
 // Add a klass to the system from a stream (called by jni_DefineClass and
 // JVM_DefineClass).
 // Note: class_name can be NULL. In that case we do not know the name of
 // the class until we have parsed the stream.
-klassOop SystemDictionary::resolve_from_stream(Symbol* class_name,
+Klass* SystemDictionary::resolve_from_stream(Symbol* class_name,
 Handle class_loader,
 Handle protection_domain,
 ClassFileStream* st,
 bool verify,
 TRAPS) {
 // Classloaders that support parallelism, e.g. bootstrap classloader,
 // or all classloaders with UnsyncloadClass do not acquire lock here
 bool DoObjectLock = true;
 if (is_parallelCapable(class_loader)) {
 DoObjectLock = false;
 }
+ClassLoaderData* loader_data = register_loader(class_loader);
 // Make sure we are synchronized on the class loader before we proceed
 Handle lockObject = compute_loader_lock_object(class_loader, THREAD);
 check_loader_lock_contention(lockObject, THREAD);
 ObjectLocker ol(lockObject, THREAD, DoObjectLock);
 assert(is_internal_format(parsed_name),
 "external class name format used internally");
 // Add class just loaded
 // If a class loader supports parallel classloading handle parallel define requests
-// find_or_define_instance_class may return a different instanceKlass
+// find_or_define_instance_class may return a different InstanceKlass
 if (is_parallelCapable(class_loader)) {
 k = find_or_define_instance_class(class_name, class_loader, k, THREAD);
 } else {
 define_instance_class(k, THREAD);
 }
 // must make sure parsed_name is valid first (it won't be if we had
 // a format error before the class was parsed far enough to
 // find the name).
 if (HAS_PENDING_EXCEPTION && parsed_name != NULL) {
 unsigned int p_hash = placeholders()->compute_hash(parsed_name,
-class_loader);
+loader_data);
 int p_index = placeholders()->hash_to_index(p_hash);
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
-placeholders()->find_and_remove(p_index, p_hash, parsed_name, class_loader, THREAD);
+placeholders()->find_and_remove(p_index, p_hash, parsed_name, loader_data, THREAD);
 SystemDictionary_lock->notify_all();
 }
 return NULL;
 }
 // SystemDictionary; this is only done on success
 debug_only( {
 if (!HAS_PENDING_EXCEPTION) {
 assert(parsed_name != NULL, "parsed_name is still null?");
 Symbol*  h_name    = k->name();
-Handle h_loader (THREAD, k->class_loader());
+ClassLoaderData *defining_loader_data = k->class_loader_data();
 MutexLocker mu(SystemDictionary_lock, THREAD);
-klassOop check = find_class(parsed_name, class_loader);
+Klass* check = find_class(parsed_name, loader_data);
 assert(check == k(), "should be present in the dictionary");
-klassOop check2 = find_class(h_name, h_loader);
+Klass* check2 = find_class(h_name, defining_loader_data);
 assert(check == check2, "name inconsistancy in SystemDictionary");
 }
 } );
 return k();
 // If there is a shared dictionary, then find the entry for the
 // given shared system class, if any.
-klassOop SystemDictionary::find_shared_class(Symbol* class_name) {
+Klass* SystemDictionary::find_shared_class(Symbol* class_name) {
 if (shared_dictionary() != NULL) {
-unsigned int d_hash = shared_dictionary()->compute_hash(class_name, Handle());
+unsigned int d_hash = shared_dictionary()->compute_hash(class_name, NULL);
 int d_index = shared_dictionary()->hash_to_index(d_hash);
 return shared_dictionary()->find_shared_class(d_index, d_hash, class_name);
 } else {
 return NULL;
 }
 }
 // Found the class, now load the superclass and interfaces.  If they
 // are shared, add them to the main system dictionary and reset
 // their hierarchy references (supers, subs, and interfaces).
 if (ik->super() != NULL) {
-Symbol*  cn = ik->super()->klass_part()->name();
+Symbol*  cn = ik->super()->name();
 resolve_super_or_fail(class_name, cn,
 class_loader, Handle(), true, CHECK_(nh));
 }
-objArrayHandle interfaces (THREAD, ik->local_interfaces());
+Array<Klass*>* interfaces = ik->local_interfaces();
 int num_interfaces = interfaces->length();
 for (int index = 0; index < num_interfaces; index++) {
-klassOop k = klassOop(interfaces->obj_at(index));
+Klass* k = interfaces->at(index);
-// Note: can not use instanceKlass::cast here because
+// Note: can not use InstanceKlass::cast here because
-// interfaces' instanceKlass's C++ vtbls haven't been
+// interfaces' InstanceKlass's C++ vtbls haven't been
 // reinitialized yet (they will be once the interface classes
 // are loaded)
-Symbol*  name  = k->klass_part()->name();
+Symbol*  name  = k->name();
 resolve_super_or_fail(class_name, name, class_loader, Handle(), false, CHECK_(nh));
 }
 // Adjust methods to recover missing data.  They need addresses for
 // interpreter entry points and their default native method address
 {
 Handle lockObject = compute_loader_lock_object(class_loader, THREAD);
 check_loader_lock_contention(lockObject, THREAD);
 ObjectLocker ol(lockObject, THREAD, true);
+ik->restore_unshareable_info(CHECK_(nh));
-objArrayHandle methods (THREAD, ik->methods());
-int num_methods = methods->length();
-for (int index2 = 0; index2 < num_methods; ++index2) {
-methodHandle m(THREAD, methodOop(methods->obj_at(index2)));
-m()->link_method(m, CHECK_(nh));
-}
-if (JvmtiExport::has_redefined_a_class()) {
-// Reinitialize vtable because RedefineClasses may have changed some
-// entries in this vtable for super classes so the CDS vtable might
-// point to old or obsolete entries.  RedefineClasses doesn't fix up
-// vtables in the shared system dictionary, only the main one.
-// It also redefines the itable too so fix that too.
-ResourceMark rm(THREAD);
-ik->vtable()->initialize_vtable(false, CHECK_(nh));
-ik->itable()->initialize_itable(false, CHECK_(nh));
-}
 }
 if (TraceClassLoading) {
 ResourceMark rm;
 tty->print("[Loaded %s", ik->external_name());
 tty->print(" from shared objects file");
 tty->print_cr("]");
 }
 // notify a class loaded from shared object
-ClassLoadingService::notify_class_loaded(instanceKlass::cast(ik()),
+ClassLoadingService::notify_class_loaded(InstanceKlass::cast(ik()),
 true /* shared class */);
 }
 return ik;
 }
 // first try to call this so it'd better be fast!!
 static instanceKlassHandle download_and_retry_class_load(
 Symbol* class_name,
 TRAPS) {
-klassOop dlm = SystemDictionary::DownloadManager_klass();
+Klass* dlm = SystemDictionary::DownloadManager_klass();
 instanceKlassHandle nk;
 // If download manager class isn't loaded just return.
 if (dlm == NULL) return nk;
 if (k.is_null()) {
 k = download_and_retry_class_load(class_name, CHECK_(nh));
 }
 #endif // KERNEL
-// find_or_define_instance_class may return a different instanceKlass
+// find_or_define_instance_class may return a different InstanceKlass
 if (!k.is_null()) {
 k = find_or_define_instance_class(class_name, class_loader, k, CHECK_(nh));
 }
 return k;
 } else {
 // Primitive classes return null since forName() can not be
 // used to obtain any of the Class objects representing primitives or void
 if ((obj != NULL) && !(java_lang_Class::is_primitive(obj))) {
 instanceKlassHandle k =
-instanceKlassHandle(THREAD, java_lang_Class::as_klassOop(obj));
+instanceKlassHandle(THREAD, java_lang_Class::as_Klass(obj));
 // For user defined Java class loaders, check that the name returned is
 // the same as that requested.  This check is done for the bootstrap
 // loader when parsing the class file.
 if (class_name == k->name()) {
 return k;
 }
 }
 void SystemDictionary::define_instance_class(instanceKlassHandle k, TRAPS) {
-Handle class_loader_h(THREAD, k->class_loader());
+ClassLoaderData* loader_data = k->class_loader_data();
+Handle class_loader_h(THREAD, loader_data->class_loader());
+for (uintx it = 0; it < GCExpandToAllocateDelayMillis; it++){}
 // for bootstrap and other parallel classloaders don't acquire lock,
 // use placeholder token
 // If a parallelCapable class loader calls define_instance_class instead of
 // find_or_define_instance_class to get here, we have a timing
 // Existing classloaders will call define_instance_class with the
 // classloader lock held
 // Parallel classloaders will call find_or_define_instance_class
 // which will require a token to perform the define class
 Symbol*  name_h = k->name();
-unsigned int d_hash = dictionary()->compute_hash(name_h, class_loader_h);
+unsigned int d_hash = dictionary()->compute_hash(name_h, loader_data);
 int d_index = dictionary()->hash_to_index(d_hash);
 check_constraints(d_index, d_hash, k, class_loader_h, true, CHECK);
 // Register class just loaded with class loader (placed in Vector)
 // Note we do this before updating the dictionary, as this can
 // fail with an OutOfMemoryError (if it does, we will *not* put this
 // class in the dictionary and will not update the class hierarchy).
+// JVMTI FollowReferences needs to find the classes this way.
 if (k->class_loader() != NULL) {
 methodHandle m(THREAD, Universe::loader_addClass_method());
 JavaValue result(T_VOID);
 JavaCallArguments args(class_loader_h);
 args.push_oop(Handle(THREAD, k->java_mirror()));
 JavaCalls::call(&result, m, &args, CHECK);
 }
 // Add the new class. We need recompile lock during update of CHA.
 {
-unsigned int p_hash = placeholders()->compute_hash(name_h, class_loader_h);
+unsigned int p_hash = placeholders()->compute_hash(name_h, loader_data);
 int p_index = placeholders()->hash_to_index(p_hash);
 MutexLocker mu_r(Compile_lock, THREAD);
 // Add to class hierarchy, initialize vtables, and do possible
 // Note: VM callers should ensure consistency of k/class_name,class_loader
 instanceKlassHandle SystemDictionary::find_or_define_instance_class(Symbol* class_name, Handle class_loader, instanceKlassHandle k, TRAPS) {
 instanceKlassHandle nh = instanceKlassHandle(); // null Handle
 Symbol*  name_h = k->name(); // passed in class_name may be null
+ClassLoaderData* loader_data = class_loader_data(class_loader);
-unsigned int d_hash = dictionary()->compute_hash(name_h, class_loader);
+unsigned int d_hash = dictionary()->compute_hash(name_h, loader_data);
 int d_index = dictionary()->hash_to_index(d_hash);
 // Hold SD lock around find_class and placeholder creation for DEFINE_CLASS
-unsigned int p_hash = placeholders()->compute_hash(name_h, class_loader);
+unsigned int p_hash = placeholders()->compute_hash(name_h, loader_data);
 int p_index = placeholders()->hash_to_index(p_hash);
 PlaceholderEntry* probe;
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
 // First check if class already defined
 if (UnsyncloadClass || (is_parallelDefine(class_loader))) {
-klassOop check = find_class(d_index, d_hash, name_h, class_loader);
+Klass* check = find_class(d_index, d_hash, name_h, loader_data);
 if (check != NULL) {
 return(instanceKlassHandle(THREAD, check));
 }
 }
 // Acquire define token for this class/classloader
-probe = placeholders()->find_and_add(p_index, p_hash, name_h, class_loader, PlaceholderTable::DEFINE_CLASS, NULL, THREAD);
+probe = placeholders()->find_and_add(p_index, p_hash, name_h, loader_data, PlaceholderTable::DEFINE_CLASS, NULL, THREAD);
 // Wait if another thread defining in parallel
 // All threads wait - even those that will throw duplicate class: otherwise
 // caller is surprised by LinkageError: duplicate, but findLoadedClass fails
 // if other thread has not finished updating dictionary
 while (probe->definer() != NULL) {
 SystemDictionary_lock->wait();
 }
 // Only special cases allow parallel defines and can use other thread's results
 // Other cases fall through, and may run into duplicate defines
 // caught by finding an entry in the SystemDictionary
-if ((UnsyncloadClass || is_parallelDefine(class_loader)) && (probe->instanceKlass() != NULL)) {
+if ((UnsyncloadClass || is_parallelDefine(class_loader)) && (probe->InstanceKlass() != NULL)) {
 probe->remove_seen_thread(THREAD, PlaceholderTable::DEFINE_CLASS);
-placeholders()->find_and_remove(p_index, p_hash, name_h, class_loader, THREAD);
+placeholders()->find_and_remove(p_index, p_hash, name_h, loader_data, THREAD);
 SystemDictionary_lock->notify_all();
 #ifdef ASSERT
-klassOop check = find_class(d_index, d_hash, name_h, class_loader);
+Klass* check = find_class(d_index, d_hash, name_h, loader_data);
 assert(check != NULL, "definer missed recording success");
 #endif
-return(instanceKlassHandle(THREAD, probe->instanceKlass()));
+return(instanceKlassHandle(THREAD, probe->InstanceKlass()));
 } else {
 // This thread will define the class (even if earlier thread tried and had an error)
 probe->set_definer(THREAD);
 }
 }
 Handle linkage_exception = Handle(); // null handle
 // definer must notify any waiting threads
 {
 MutexLocker mu(SystemDictionary_lock, THREAD);
-PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, name_h, class_loader);
+PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, name_h, loader_data);
 assert(probe != NULL, "DEFINE_CLASS placeholder lost?");
 if (probe != NULL) {
 if (HAS_PENDING_EXCEPTION) {
 linkage_exception = Handle(THREAD,PENDING_EXCEPTION);
 CLEAR_PENDING_EXCEPTION;
 } else {
 probe->set_instanceKlass(k());
 }
 probe->set_definer(NULL);
 probe->remove_seen_thread(THREAD, PlaceholderTable::DEFINE_CLASS);
-placeholders()->find_and_remove(p_index, p_hash, name_h, class_loader, THREAD);
+placeholders()->find_and_remove(p_index, p_hash, name_h, loader_data, THREAD);
 SystemDictionary_lock->notify_all();
 }
 }
 // Can't throw exception while holding lock due to rank ordering
 }
 // ----------------------------------------------------------------------------
 // Lookup
-klassOop SystemDictionary::find_class(int index, unsigned int hash,
+Klass* SystemDictionary::find_class(int index, unsigned int hash,
 Symbol* class_name,
-Handle class_loader) {
+ClassLoaderData* loader_data) {
 assert_locked_or_safepoint(SystemDictionary_lock);
-assert (index == dictionary()->index_for(class_name, class_loader),
+assert (index == dictionary()->index_for(class_name, loader_data),
 "incorrect index?");
-klassOop k = dictionary()->find_class(index, hash, class_name, class_loader);
+Klass* k = dictionary()->find_class(index, hash, class_name, loader_data);
 return k;
 }
 // Basic find on classes in the midst of being loaded
 Symbol* SystemDictionary::find_placeholder(Symbol* class_name,
-Handle class_loader) {
+ClassLoaderData* loader_data) {
 assert_locked_or_safepoint(SystemDictionary_lock);
-unsigned int p_hash = placeholders()->compute_hash(class_name, class_loader);
+unsigned int p_hash = placeholders()->compute_hash(class_name, loader_data);
 int p_index = placeholders()->hash_to_index(p_hash);
-return placeholders()->find_entry(p_index, p_hash, class_name, class_loader);
+return placeholders()->find_entry(p_index, p_hash, class_name, loader_data);
 }
 // Used for assertions and verification only
-klassOop SystemDictionary::find_class(Symbol* class_name, Handle class_loader) {
+Klass* SystemDictionary::find_class(Symbol* class_name, ClassLoaderData* loader_data) {
 #ifndef ASSERT
 guarantee(VerifyBeforeGC   ||
 VerifyDuringGC   ||
 VerifyBeforeExit ||
 VerifyAfterGC, "too expensive");
 #endif
 assert_locked_or_safepoint(SystemDictionary_lock);
 // First look in the loaded class array
-unsigned int d_hash = dictionary()->compute_hash(class_name, class_loader);
+unsigned int d_hash = dictionary()->compute_hash(class_name, loader_data);
 int d_index = dictionary()->hash_to_index(d_hash);
-return find_class(d_index, d_hash, class_name, class_loader);
+return find_class(d_index, d_hash, class_name, loader_data);
 }
 // Get the next class in the diictionary.
-klassOop SystemDictionary::try_get_next_class() {
+Klass* SystemDictionary::try_get_next_class() {
 return dictionary()->try_get_next_class();
 }
 // ----------------------------------------------------------------------------
 assert_locked_or_safepoint(Compile_lock);
 // Link into hierachy. Make sure the vtables are initialized before linking into
 k->append_to_sibling_list();                    // add to superklass/sibling list
 k->process_interfaces(THREAD);                  // handle all "implements" declarations
-k->set_init_state(instanceKlass::loaded);
+k->set_init_state(InstanceKlass::loaded);
 // Now flush all code that depended on old class hierarchy.
 // Note: must be done *after* linking k into the hierarchy (was bug 12/9/97)
 // Also, first reinitialize vtable because it may have gotten out of synch
 // while the new class wasn't connected to the class hierarchy.
 Universe::flush_dependents_on(k);
 //
 // The second phase removes (unloads) unreachable classes from the
 // system dictionary and follows the remaining classes' contents.
 void SystemDictionary::always_strong_oops_do(OopClosure* blk) {
-// Follow preloaded classes/mirrors and system loader object
 blk->do_oop(&_java_system_loader);
-preloaded_oops_do(blk);
+blk->do_oop(&_system_loader_lock_obj);
-always_strong_classes_do(blk);
-}
+dictionary()->always_strong_oops_do(blk);
-void SystemDictionary::always_strong_classes_do(OopClosure* blk) {
-// Follow all system classes and temporary placeholders in dictionary
-dictionary()->always_strong_classes_do(blk);
-// Placeholders. These are *always* strong roots, as they
-// represent classes we're actively loading.
-placeholders_do(blk);
 // Visit extra methods
 invoke_method_table()->oops_do(blk);
 }
+void SystemDictionary::always_strong_classes_do(KlassClosure* closure) {
-void SystemDictionary::placeholders_do(OopClosure* blk) {
+// Follow all system classes and temporary placeholders in dictionary
-placeholders()->oops_do(blk);
+dictionary()->always_strong_classes_do(closure);
+// Placeholders. These represent classes we're actively loading.
+placeholders()->classes_do(closure);
 }
 // Calculate a "good" systemdictionary size based
 // on predicted or current loaded classes count
 int SystemDictionary::calculate_systemdictionary_size(int classcount) {
 }
 }
 return newsize;
 }
 bool SystemDictionary::do_unloading(BoolObjectClosure* is_alive) {
-bool result = dictionary()->do_unloading(is_alive);
+// First, mark for unload all ClassLoaderData referencing a dead class loader.
-constraints()->purge_loader_constraints(is_alive);
+bool has_dead_loaders = ClassLoaderDataGraph::do_unloading(is_alive);
-resolution_errors()->purge_resolution_errors(is_alive);
+bool unloading_occurred = false;
-return result;
+if (has_dead_loaders) {
-}
+unloading_occurred = dictionary()->do_unloading();
+constraints()->purge_loader_constraints();
+resolution_errors()->purge_resolution_errors();
-// The mirrors are scanned by shared_oops_do() which is
+}
-// not called by oops_do().  In order to process oops in
+return unloading_occurred;
-// a necessary order, shared_oops_do() is call by
+}
-// Universe::oops_do().
 void SystemDictionary::oops_do(OopClosure* f) {
-// Adjust preloaded classes and system loader object
 f->do_oop(&_java_system_loader);
-preloaded_oops_do(f);
+f->do_oop(&_system_loader_lock_obj);
-lazily_loaded_oops_do(f);
 // Adjust dictionary
 dictionary()->oops_do(f);
 // Visit extra methods
 invoke_method_table()->oops_do(f);
+}
-// Partially loaded classes
-placeholders()->oops_do(f);
+// Extended Class redefinition support.
+// If one of these classes is replaced, we need to replace it in these places.
-// Adjust constraint table
+// KlassClosure::do_klass should take the address of a class but we can
-constraints()->oops_do(f);
+// change that later.
+void SystemDictionary::preloaded_classes_do(KlassClosure* f) {
-// Adjust resolution error table
-resolution_errors()->oops_do(f);
-}
-void SystemDictionary::preloaded_oops_do(OopClosure* f) {
 for (int k = (int)FIRST_WKID; k < (int)WKID_LIMIT; k++) {
-f->do_oop((oop*) &_well_known_klasses[k]);
+f->do_klass(_well_known_klasses[k]);
 }
 {
 for (int i = 0; i < T_VOID+1; i++) {
 if (_box_klasses[i] != NULL) {
 assert(i >= T_BOOLEAN, "checking");
-f->do_oop((oop*) &_box_klasses[i]);
+f->do_klass(_box_klasses[i]);
 }
 }
 }
-// The basic type mirrors would have already been processed in
+FilteredFieldsMap::classes_do(f);
-// Universe::oops_do(), via a call to shared_oops_do(), so should
+}
-// not be processed again.
+void SystemDictionary::lazily_loaded_classes_do(KlassClosure* f) {
-f->do_oop((oop*) &_system_loader_lock_obj);
+f->do_klass(_abstract_ownable_synchronizer_klass);
-FilteredFieldsMap::klasses_oops_do(f);
-}
-void SystemDictionary::lazily_loaded_oops_do(OopClosure* f) {
-f->do_oop((oop*) &_abstract_ownable_synchronizer_klass);
 }
 // Just the classes from defining class loaders
 // Don't iterate over placeholders
-void SystemDictionary::classes_do(void f(klassOop)) {
+void SystemDictionary::classes_do(void f(Klass*)) {
 dictionary()->classes_do(f);
 }
 // Added for initialize_itable_for_klass
 //   Just the classes from defining class loaders
 // Don't iterate over placeholders
-void SystemDictionary::classes_do(void f(klassOop, TRAPS), TRAPS) {
+void SystemDictionary::classes_do(void f(Klass*, TRAPS), TRAPS) {
 dictionary()->classes_do(f, CHECK);
 }
 //   All classes, and their class loaders
 // Don't iterate over placeholders
-void SystemDictionary::classes_do(void f(klassOop, oop)) {
+void SystemDictionary::classes_do(void f(Klass*, ClassLoaderData*)) {
 dictionary()->classes_do(f);
 }
 //   All classes, and their class loaders
 //   (added for helpers that use HandleMarks and ResourceMarks)
 // Don't iterate over placeholders
-void SystemDictionary::classes_do(void f(klassOop, oop, TRAPS), TRAPS) {
+void SystemDictionary::classes_do(void f(Klass*, ClassLoaderData*, TRAPS), TRAPS) {
 dictionary()->classes_do(f, CHECK);
 }
-void SystemDictionary::placeholders_do(void f(Symbol*, oop)) {
+void SystemDictionary::placeholders_do(void f(Symbol*)) {
 placeholders()->entries_do(f);
 }
-void SystemDictionary::methods_do(void f(methodOop)) {
+void SystemDictionary::methods_do(void f(Method*)) {
 dictionary()->methods_do(f);
 invoke_method_table()->methods_do(f);
 }
 // ----------------------------------------------------------------------------
 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
 // if multiple threads calling this function, only one thread will load
 // the class.  The other threads will find the loaded version once the
 // class is loaded.
-klassOop aos = _abstract_ownable_synchronizer_klass;
+Klass* aos = _abstract_ownable_synchronizer_klass;
 if (aos == NULL) {
-klassOop k = resolve_or_fail(vmSymbols::java_util_concurrent_locks_AbstractOwnableSynchronizer(), true, CHECK);
+Klass* k = resolve_or_fail(vmSymbols::java_util_concurrent_locks_AbstractOwnableSynchronizer(), true, CHECK);
 // Force a fence to prevent any read before the write completes
 OrderAccess::fence();
 _abstract_ownable_synchronizer_klass = k;
 }
 }
 _loader_constraints  = new LoaderConstraintTable(_loader_constraint_size);
 _resolution_errors   = new ResolutionErrorTable(_resolution_error_size);
 _invoke_method_table = new SymbolPropertyTable(_invoke_method_size);
 // Allocate private object used as system class loader lock
-_system_loader_lock_obj = oopFactory::new_system_objArray(0, CHECK);
+_system_loader_lock_obj = oopFactory::new_intArray(0, CHECK);
 // Initialize basic classes
 initialize_preloaded_classes(CHECK);
 }
 // Compact table of directions on the initialization of klasses:
 bool SystemDictionary::initialize_wk_klass(WKID id, int init_opt, TRAPS) {
 assert(id >= (int)FIRST_WKID && id < (int)WKID_LIMIT, "oob");
 int  info = wk_init_info[id - FIRST_WKID];
 int  sid  = (info >> CEIL_LG_OPTION_LIMIT);
 Symbol* symbol = vmSymbols::symbol_at((vmSymbols::SID)sid);
-klassOop*    klassp = &_well_known_klasses[id];
+Klass**    klassp = &_well_known_klasses[id];
 bool must_load = (init_opt < SystemDictionary::Opt);
 bool try_load  = true;
 if (init_opt == SystemDictionary::Opt_Kernel) {
 #ifndef KERNEL
 try_load = false;
 int info = wk_init_info[id - FIRST_WKID];
 int sid  = (info >> CEIL_LG_OPTION_LIMIT);
 int opt  = (info & right_n_bits(CEIL_LG_OPTION_LIMIT));
 initialize_wk_klass((WKID)id, opt, CHECK);
-// Update limits, so find_well_known_klass can be very fast:
-Symbol* s = vmSymbols::symbol_at((vmSymbols::SID)sid);
-if (wk_klass_name_limits[1] == NULL) {
-wk_klass_name_limits[0] = wk_klass_name_limits[1] = s;
-} else if (wk_klass_name_limits[1] < s) {
-wk_klass_name_limits[1] = s;
-} else if (wk_klass_name_limits[0] > s) {
-wk_klass_name_limits[0] = s;
-}
 }
 // move the starting value forward to the limit:
 start_id = limit_id;
 }
 void SystemDictionary::initialize_preloaded_classes(TRAPS) {
 assert(WK_KLASS(Object_klass) == NULL, "preloaded classes should only be initialized once");
 // Preload commonly used klasses
 WKID scan = FIRST_WKID;
-// first do Object, String, Class
+// first do Object, then String, Class
-initialize_wk_klasses_through(WK_KLASS_ENUM_NAME(Class_klass), scan, CHECK);
+if (UseSharedSpaces) {
+initialize_wk_klasses_through(WK_KLASS_ENUM_NAME(Object_klass), scan, CHECK);
+// Initialize the constant pool for the Object_class
+InstanceKlass* ik = InstanceKlass::cast(Object_klass());
+ik->constants()->restore_unshareable_info(CHECK);
+initialize_wk_klasses_through(WK_KLASS_ENUM_NAME(Class_klass), scan, CHECK);
+} else {
+initialize_wk_klasses_through(WK_KLASS_ENUM_NAME(Class_klass), scan, CHECK);
+}
 // Calculate offsets for String and Class classes since they are loaded and
 // can be used after this point.
 java_lang_String::compute_offsets();
 java_lang_Class::compute_offsets();
 // do a bunch more:
 initialize_wk_klasses_through(WK_KLASS_ENUM_NAME(Reference_klass), scan, CHECK);
 // Preload ref klasses and set reference types
-instanceKlass::cast(WK_KLASS(Reference_klass))->set_reference_type(REF_OTHER);
+InstanceKlass::cast(WK_KLASS(Reference_klass))->set_reference_type(REF_OTHER);
-instanceRefKlass::update_nonstatic_oop_maps(WK_KLASS(Reference_klass));
+InstanceRefKlass::update_nonstatic_oop_maps(WK_KLASS(Reference_klass));
 initialize_wk_klasses_through(WK_KLASS_ENUM_NAME(PhantomReference_klass), scan, CHECK);
-instanceKlass::cast(WK_KLASS(SoftReference_klass))->set_reference_type(REF_SOFT);
+InstanceKlass::cast(WK_KLASS(SoftReference_klass))->set_reference_type(REF_SOFT);
-instanceKlass::cast(WK_KLASS(WeakReference_klass))->set_reference_type(REF_WEAK);
+InstanceKlass::cast(WK_KLASS(WeakReference_klass))->set_reference_type(REF_WEAK);
-instanceKlass::cast(WK_KLASS(FinalReference_klass))->set_reference_type(REF_FINAL);
+InstanceKlass::cast(WK_KLASS(FinalReference_klass))->set_reference_type(REF_FINAL);
-instanceKlass::cast(WK_KLASS(PhantomReference_klass))->set_reference_type(REF_PHANTOM);
+InstanceKlass::cast(WK_KLASS(PhantomReference_klass))->set_reference_type(REF_PHANTOM);
 // JSR 292 classes
 WKID jsr292_group_start = WK_KLASS_ENUM_NAME(MethodHandle_klass);
 WKID jsr292_group_end   = WK_KLASS_ENUM_NAME(VolatileCallSite_klass);
 initialize_wk_klasses_until(jsr292_group_start, scan, CHECK);
 warning("Cannot find sun/jkernel/DownloadManager");
 }
 #endif // KERNEL
 { // Compute whether we should use loadClass or loadClassInternal when loading classes.
-methodOop method = instanceKlass::cast(ClassLoader_klass())->find_method(vmSymbols::loadClassInternal_name(), vmSymbols::string_class_signature());
+Method* method = InstanceKlass::cast(ClassLoader_klass())->find_method(vmSymbols::loadClassInternal_name(), vmSymbols::string_class_signature());
 _has_loadClassInternal = (method != NULL);
 }
 { // Compute whether we should use checkPackageAccess or NOT
-methodOop method = instanceKlass::cast(ClassLoader_klass())->find_method(vmSymbols::checkPackageAccess_name(), vmSymbols::class_protectiondomain_signature());
+Method* method = InstanceKlass::cast(ClassLoader_klass())->find_method(vmSymbols::checkPackageAccess_name(), vmSymbols::class_protectiondomain_signature());
 _has_checkPackageAccess = (method != NULL);
 }
 }
 // Tells if a given klass is a box (wrapper class, such as java.lang.Integer).
 // If so, returns the basic type it holds.  If not, returns T_OBJECT.
-BasicType SystemDictionary::box_klass_type(klassOop k) {
+BasicType SystemDictionary::box_klass_type(Klass* k) {
 assert(k != NULL, "");
 for (int i = T_BOOLEAN; i < T_VOID+1; i++) {
 if (_box_klasses[i] == k)
 return (BasicType)i;
 }
 return T_OBJECT;
-}
-KlassHandle SystemDictionaryHandles::box_klass(BasicType t) {
-if (t >= T_BOOLEAN && t <= T_VOID)
-return KlassHandle(&SystemDictionary::_box_klasses[t], true);
-else
-return KlassHandle();
 }
 // Constraints on class loaders. The details of the algorithm can be
 // found in the OOPSLA'98 paper "Dynamic Class Loading in the Java
 // Virtual Machine" by Sheng Liang and Gilad Bracha.  The basic idea is
 // that the system dictionary needs to maintain a set of contraints that
 // must be satisfied by all classes in the dictionary.
 // if defining is true, then LinkageError if already in systemDictionary
-// if initiating loader, then ok if instanceKlass matches existing entry
+// if initiating loader, then ok if InstanceKlass matches existing entry
 void SystemDictionary::check_constraints(int d_index, unsigned int d_hash,
 instanceKlassHandle k,
 Handle class_loader, bool defining,
 TRAPS) {
 const char *linkage_error = NULL;
 {
 Symbol*  name  = k->name();
+ClassLoaderData *loader_data = class_loader_data(class_loader);
 MutexLocker mu(SystemDictionary_lock, THREAD);
-klassOop check = find_class(d_index, d_hash, name, class_loader);
+Klass* check = find_class(d_index, d_hash, name, loader_data);
-if (check != (klassOop)NULL) {
+if (check != (Klass*)NULL) {
-// if different instanceKlass - duplicate class definition,
+// if different InstanceKlass - duplicate class definition,
 // else - ok, class loaded by a different thread in parallel,
 // we should only have found it if it was done loading and ok to use
 // system dictionary only holds instance classes, placeholders
 // also holds array classes
-assert(check->klass_part()->oop_is_instance(), "noninstance in systemdictionary");
+assert(check->oop_is_instance(), "noninstance in systemdictionary");
 if ((defining == true) || (k() != check)) {
 linkage_error = "loader (instance of  %s): attempted  duplicate class "
 "definition for name: \"%s\"";
 } else {
 return;
 }
 }
 #ifdef ASSERT
-Symbol* ph_check = find_placeholder(name, class_loader);
+Symbol* ph_check = find_placeholder(name, loader_data);
 assert(ph_check == NULL || ph_check == name, "invalid symbol");
 #endif
 if (linkage_error == NULL) {
 if (constraints()->check_or_update(k, class_loader, name) == false) {
 Handle class_loader,
 TRAPS) {
 // Compile_lock prevents systemDictionary updates during compilations
 assert_locked_or_safepoint(Compile_lock);
 Symbol*  name  = k->name();
+ClassLoaderData *loader_data = class_loader_data(class_loader);
 {
 MutexLocker mu1(SystemDictionary_lock, THREAD);
 // See whether biased locking is enabled and if so set it for this
 // klass.
 // Note that this must be done past the last potential blocking
 // point / safepoint. We enable biased locking lazily using a
 // VM_Operation to iterate the SystemDictionary and installing the
-// biasable mark word into each instanceKlass's prototype header.
+// biasable mark word into each InstanceKlass's prototype header.
 // To avoid race conditions where we accidentally miss enabling the
 // optimization for one class in the process of being added to the
 // dictionary, we must not safepoint after the test of
 // BiasedLocking::enabled().
 if (UseBiasedLocking && BiasedLocking::enabled()) {
 // All loaded classes get a unique ID.
 TRACE_INIT_ID(k);
 // Check for a placeholder. If there, remove it and make a
 // new system dictionary entry.
-placeholders()->find_and_remove(p_index, p_hash, name, class_loader, THREAD);
+placeholders()->find_and_remove(p_index, p_hash, name, loader_data, THREAD);
-klassOop sd_check = find_class(d_index, d_hash, name, class_loader);
+Klass* sd_check = find_class(d_index, d_hash, name, loader_data);
 if (sd_check == NULL) {
-dictionary()->add_klass(name, class_loader, k);
+dictionary()->add_klass(name, loader_data, k);
 notice_modification();
 }
 #ifdef ASSERT
-sd_check = find_class(d_index, d_hash, name, class_loader);
+sd_check = find_class(d_index, d_hash, name, loader_data);
 assert (sd_check != NULL, "should have entry in system dictionary");
 // Changed to allow PH to remain to complete class circularity checking
 // while only one thread can define a class at one time, multiple
 // classes can resolve the superclass for a class at one time,
 // and the placeholder is used to track that
 // Try to find a class name using the loader constraints.  The
 // loader constraints might know about a class that isn't fully loaded
 // yet and these will be ignored.
-klassOop SystemDictionary::find_constrained_instance_or_array_klass(
+Klass* SystemDictionary::find_constrained_instance_or_array_klass(
 Symbol* class_name, Handle class_loader, TRAPS) {
 // First see if it has been loaded directly.
 // Force the protection domain to be null.  (This removes protection checks.)
 Handle no_protection_domain;
-klassOop klass = find_instance_or_array_klass(class_name, class_loader,
+Klass* klass = find_instance_or_array_klass(class_name, class_loader,
 no_protection_domain, CHECK_NULL);
 if (klass != NULL)
 return klass;
 // Now look to see if it has been loaded elsewhere, and is subject to
 // a loader constraint that would require this loader to return the
 // klass that is already loaded.
 if (FieldType::is_array(class_name)) {
-// For array classes, their klassOops are not kept in the
+// For array classes, their Klass*s are not kept in the
-// constraint table. The element klassOops are.
+// constraint table. The element Klass*s are.
 FieldArrayInfo fd;
 BasicType t = FieldType::get_array_info(class_name, fd, CHECK_(NULL));
 if (t != T_OBJECT) {
 klass = Universe::typeArrayKlassObj(t);
 } else {
 bool SystemDictionary::add_loader_constraint(Symbol* class_name,
 Handle class_loader1,
 Handle class_loader2,
 Thread* THREAD) {
+ClassLoaderData* loader_data1 = class_loader_data(class_loader1);
+ClassLoaderData* loader_data2 = class_loader_data(class_loader2);
 Symbol* constraint_name = NULL;
 if (!FieldType::is_array(class_name)) {
 constraint_name = class_name;
 } else {
-// For array classes, their klassOops are not kept in the
+// For array classes, their Klass*s are not kept in the
 // constraint table. The element classes are.
 FieldArrayInfo fd;
 BasicType t = FieldType::get_array_info(class_name, fd, CHECK_(false));
 // primitive types always pass
 if (t != T_OBJECT) {
 return true;
 } else {
 constraint_name = fd.object_key();
 }
 }
-unsigned int d_hash1 = dictionary()->compute_hash(constraint_name, class_loader1);
+unsigned int d_hash1 = dictionary()->compute_hash(constraint_name, loader_data1);
 int d_index1 = dictionary()->hash_to_index(d_hash1);
-unsigned int d_hash2 = dictionary()->compute_hash(constraint_name, class_loader2);
+unsigned int d_hash2 = dictionary()->compute_hash(constraint_name, loader_data2);
 int d_index2 = dictionary()->hash_to_index(d_hash2);
 {
 MutexLocker mu_s(SystemDictionary_lock, THREAD);
 // Better never do a GC while we're holding these oops
 No_Safepoint_Verifier nosafepoint;
-klassOop klass1 = find_class(d_index1, d_hash1, constraint_name, class_loader1);
+Klass* klass1 = find_class(d_index1, d_hash1, constraint_name, loader_data1);
-klassOop klass2 = find_class(d_index2, d_hash2, constraint_name, class_loader2);
+Klass* klass2 = find_class(d_index2, d_hash2, constraint_name, loader_data2);
 return constraints()->add_entry(constraint_name, klass1, class_loader1,
 klass2, class_loader2);
 }
 }
 int index = resolution_errors()->hash_to_index(hash);
 {
 MutexLocker ml(SystemDictionary_lock, Thread::current());
 resolution_errors()->add_entry(index, hash, pool, which, error);
 }
+}
+// Delete a resolution error for RedefineClasses for a constant pool is going away
+void SystemDictionary::delete_resolution_error(ConstantPool* pool) {
+resolution_errors()->delete_entry(pool);
 }
 // Lookup resolution error table. Returns error if found, otherwise NULL.
 Symbol* SystemDictionary::find_resolution_error(constantPoolHandle pool, int which) {
 unsigned int hash = resolution_errors()->compute_hash(pool, which);
 unsigned int hash  = invoke_method_table()->compute_hash(signature, iid);
 int          index = invoke_method_table()->hash_to_index(hash);
 SymbolPropertyEntry* spe = invoke_method_table()->find_entry(index, hash, signature, iid);
 methodHandle m;
-if (spe == NULL || spe->property_oop() == NULL) {
+if (spe == NULL || spe->method() == NULL) {
 spe = NULL;
 // Must create lots of stuff here, but outside of the SystemDictionary lock.
-m = methodOopDesc::make_method_handle_intrinsic(iid, signature, CHECK_(empty));
+m = Method::make_method_handle_intrinsic(iid, signature, CHECK_(empty));
 CompileBroker::compile_method(m, InvocationEntryBci, CompLevel_highest_tier,
 methodHandle(), CompileThreshold, "MH", CHECK_(empty));
 // Now grab the lock.  We might have to throw away the new method,
 // if a racing thread has managed to install one at the same time.
 {
 MutexLocker ml(SystemDictionary_lock, THREAD);
 spe = invoke_method_table()->find_entry(index, hash, signature, iid);
 if (spe == NULL)
 spe = invoke_method_table()->add_entry(index, hash, signature, iid);
-if (spe->property_oop() == NULL)
+if (spe->method() == NULL)
-spe->set_property_oop(m());
+spe->set_method(m());
 }
 }
-assert(spe != NULL && spe->property_oop() != NULL, "");
+assert(spe != NULL && spe->method() != NULL, "");
-m = methodOop(spe->property_oop());
+return spe->method();
-assert(m->is_method(), "");
-return m;
 }
 // Helper for unpacking the return value from linkMethod and linkCallSite.
 static methodHandle unpack_method_and_appendix(Handle mname,
 objArrayHandle appendix_box,
 Handle* appendix_result,
 TRAPS) {
 methodHandle empty;
 if (mname.not_null()) {
-oop vmtarget = java_lang_invoke_MemberName::vmtarget(mname());
+Metadata* vmtarget = java_lang_invoke_MemberName::vmtarget(mname());
 if (vmtarget != NULL && vmtarget->is_method()) {
-methodOop m = methodOop(vmtarget);
+Method* m = (Method*)vmtarget;
 oop appendix = appendix_box->obj_at(0);
 if (TraceMethodHandles) {
 #ifndef PRODUCT
 tty->print("Linked method="INTPTR_FORMAT": ", m);
 m->print();
 }
 methodHandle SystemDictionary::find_method_handle_invoker(Symbol* name,
 Symbol* signature,
 KlassHandle accessing_klass,
-Handle* appendix_result,
+Handle *appendix_result,
+Handle *method_type_result,
 TRAPS) {
 methodHandle empty;
 assert(EnableInvokeDynamic, "");
 assert(!THREAD->is_Compiler_thread(), "");
 Handle method_type =
 SystemDictionary::find_method_handle_type(signature, accessing_klass, CHECK_(empty));
 if (false) {  // FIXME: Decide if the Java upcall should resolve signatures.
 method_type = java_lang_String::create_from_symbol(signature, CHECK_(empty));
 }
-KlassHandle  mh_klass = SystemDictionaryHandles::MethodHandle_klass();
+KlassHandle  mh_klass = SystemDictionary::MethodHandle_klass();
 int ref_kind = JVM_REF_invokeVirtual;
 Handle name_str = StringTable::intern(name, CHECK_(empty));
 objArrayHandle appendix_box = oopFactory::new_objArray(SystemDictionary::Object_klass(), 1, CHECK_(empty));
 assert(appendix_box->obj_at(0) == NULL, "");
 SystemDictionary::MethodHandleNatives_klass(),
 vmSymbols::linkMethod_name(),
 vmSymbols::linkMethod_signature(),
 &args, CHECK_(empty));
 Handle mname(THREAD, (oop) result.get_jobject());
+(*method_type_result) = method_type;
 return unpack_method_and_appendix(mname, appendix_box, appendix_result, THREAD);
 }
 // Ask Java code to find or construct a java.lang.invoke.MethodType for the given
 Handle empty;
 vmIntrinsics::ID null_iid = vmIntrinsics::_none;  // distinct from all method handle invoker intrinsics
 unsigned int hash  = invoke_method_table()->compute_hash(signature, null_iid);
 int          index = invoke_method_table()->hash_to_index(hash);
 SymbolPropertyEntry* spe = invoke_method_table()->find_entry(index, hash, signature, null_iid);
-if (spe != NULL && spe->property_oop() != NULL) {
+if (spe != NULL && spe->method_type() != NULL) {
-assert(java_lang_invoke_MethodType::is_instance(spe->property_oop()), "");
+assert(java_lang_invoke_MethodType::is_instance(spe->method_type()), "");
-return Handle(THREAD, spe->property_oop());
+return Handle(THREAD, spe->method_type());
 } else if (THREAD->is_Compiler_thread()) {
 warning("SystemDictionary::find_method_handle_type called from compiler thread");  // FIXME
 return Handle();  // do not attempt from within compiler, unless it was cached
 }
 mirror = ss.as_java_mirror(class_loader, protection_domain,
 SignatureStream::ReturnNull, CHECK_(empty));
 if (mirror == NULL) {
 // fall back from BCP to accessing_klass
 if (accessing_klass.not_null()) {
-class_loader      = Handle(THREAD, instanceKlass::cast(accessing_klass())->class_loader());
+class_loader      = Handle(THREAD, InstanceKlass::cast(accessing_klass())->class_loader());
-protection_domain = Handle(THREAD, instanceKlass::cast(accessing_klass())->protection_domain());
+protection_domain = Handle(THREAD, InstanceKlass::cast(accessing_klass())->protection_domain());
 }
 is_on_bcp = false;
 }
 }
 if (!is_on_bcp) {
 else
 pts->obj_at_put(arg++, mirror);
 // Check accessibility.
 if (ss.is_object() && accessing_klass.not_null()) {
-klassOop sel_klass = java_lang_Class::as_klassOop(mirror);
+Klass* sel_klass = java_lang_Class::as_Klass(mirror);
 mirror = NULL;  // safety
-// Emulate constantPoolOopDesc::verify_constant_pool_resolve.
+// Emulate ConstantPool::verify_constant_pool_resolve.
 if (Klass::cast(sel_klass)->oop_is_objArray())
-sel_klass = objArrayKlass::cast(sel_klass)->bottom_klass();
+sel_klass = ObjArrayKlass::cast(sel_klass)->bottom_klass();
 if (Klass::cast(sel_klass)->oop_is_instance()) {
 KlassHandle sel_kh(THREAD, sel_klass);
 LinkResolver::check_klass_accessability(accessing_klass, sel_kh, CHECK_(empty));
 }
 }
 // We can cache this MethodType inside the JVM.
 MutexLocker ml(SystemDictionary_lock, THREAD);
 spe = invoke_method_table()->find_entry(index, hash, signature, null_iid);
 if (spe == NULL)
 spe = invoke_method_table()->add_entry(index, hash, signature, null_iid);
-if (spe->property_oop() == NULL) {
+if (spe->method_type() == NULL) {
-spe->set_property_oop(method_type());
+spe->set_method_type(method_type());
 }
 }
 // report back to the caller with the MethodType
 return method_type;
 // name and signature, as interpreted relative to the given class loader.
 methodHandle SystemDictionary::find_dynamic_call_site_invoker(KlassHandle caller,
 Handle bootstrap_specifier,
 Symbol* name,
 Symbol* type,
-Handle* appendix_result,
+Handle *appendix_result,
+Handle *method_type_result,
 TRAPS) {
 methodHandle empty;
 Handle bsm, info;
 if (java_lang_invoke_MethodHandle::is_instance(bootstrap_specifier())) {
 bsm = bootstrap_specifier;
 SystemDictionary::MethodHandleNatives_klass(),
 vmSymbols::linkCallSite_name(),
 vmSymbols::linkCallSite_signature(),
 &args, CHECK_(empty));
 Handle mname(THREAD, (oop) result.get_jobject());
+(*method_type_result) = method_type;
 return unpack_method_and_appendix(mname, appendix_box, appendix_result, THREAD);
 }
 // Since the identity hash code for symbols changes when the symbols are
 // moved from the regular perm gen (hash in the mark word) to the shared
 guarantee(constraints() != NULL, "Verify of loader constraints failed");
 constraints()->verify(dictionary(), placeholders());
 }
-void SystemDictionary::verify_obj_klass_present(Handle obj,
+void SystemDictionary::verify_obj_klass_present(Symbol* class_name,
-Symbol* class_name,
+ClassLoaderData* loader_data) {
-Handle class_loader) {
 GCMutexLocker mu(SystemDictionary_lock);
 Symbol* name;
-klassOop probe = find_class(class_name, class_loader);
+Klass* probe = find_class(class_name, loader_data);
 if (probe == NULL) {
 probe = SystemDictionary::find_shared_class(class_name);
 if (probe == NULL) {
-name = find_placeholder(class_name, class_loader);
+name = find_placeholder(class_name, loader_data);
 }
 }
 guarantee(probe != NULL || name != NULL,
 "Loaded klasses should be in SystemDictionary");
 }
 static int class_size;      // size of class objects in words
 static int method_size;     // size of method objects in words
 static int debug_size;      // size of debug info in methods
 static int methoddata_size; // size of methodData objects in words
-static void do_class(klassOop k) {
+static void do_class(Klass* k) {
 nclasses++;
 class_size += k->size();
-if (k->klass_part()->oop_is_instance()) {
+if (k->oop_is_instance()) {
-instanceKlass* ik = (instanceKlass*)k->klass_part();
+InstanceKlass* ik = (InstanceKlass*)k;
 class_size += ik->methods()->size();
 class_size += ik->constants()->size();
 class_size += ik->local_interfaces()->size();
 class_size += ik->transitive_interfaces()->size();
 // We do not have to count implementors, since we only store one!
-class_size += ik->fields()->length();
+// SSS: How should these be accounted now that they have moved?
-}
+// class_size += ik->fields()->length();
 }
+}
-static void do_method(methodOop m) {
+static void do_method(Method* m) {
 nmethods++;
 method_size += m->size();
 // class loader uses same objArray for empty vectors, so don't count these
 if (m->has_stackmap_table()) {
 method_size += m->stackmap_data()->size();
 }
-methodDataOop mdo = m->method_data();
+MethodData* mdo = m->method_data();
 if (mdo != NULL) {
 nmethoddata++;
 methoddata_size += mdo->size();
 }
 }
 _number_of_bytecodes      = 0;
 for (int i = 0; i < max_parameter_size             ; i++) _parameter_size_profile[i] = 0;
 for (int j = 0; j < Bytecodes::number_of_java_codes; j++) _bytecodes_profile     [j] = 0;
 };
-static void do_method(methodOop m) {
+static void do_method(Method* m) {
 _number_of_methods++;
 // collect flag info
 if (m->is_final()       ) _number_of_final_methods++;
 if (m->is_static()      ) _number_of_static_methods++;
 if (m->is_native()      ) _number_of_native_methods++;

Mercurial > hg > graal-jvmci-8

comparison src/share/vm/classfile/systemDictionary.cpp @ 6948:e522a00b91aa