Mercurial > hg > truffle
changeset 12846:e831448418ac
Merge
| author | coleenp |
|---|---|
| date | Wed, 09 Oct 2013 22:01:59 -0400 |
| parents | b4a4fdc1f464 (current diff) d25557d03ec0 (diff) |
| children | cd7ea1d79dac 539144972c1e |
| files | |
| diffstat | 26 files changed, 720 insertions(+), 280 deletions(-) [+] |
line wrap: on
line diff
--- a/agent/src/share/classes/sun/jvm/hotspot/memory/SymbolTable.java Wed Oct 09 21:45:28 2013 -0400 +++ b/agent/src/share/classes/sun/jvm/hotspot/memory/SymbolTable.java Wed Oct 09 22:01:59 2013 -0400 @@ -44,12 +44,10 @@ private static synchronized void initialize(TypeDataBase db) { Type type = db.lookupType("SymbolTable"); theTableField = type.getAddressField("_the_table"); - symbolTableSize = db.lookupIntConstant("SymbolTable::symbol_table_size").intValue(); } // Fields private static AddressField theTableField; - private static int symbolTableSize; // Accessors public static SymbolTable getTheTable() { @@ -57,10 +55,6 @@ return (SymbolTable) VMObjectFactory.newObject(SymbolTable.class, tmp); } - public static int getSymbolTableSize() { - return symbolTableSize; - } - public SymbolTable(Address addr) { super(addr); }
--- a/src/share/vm/classfile/classFileParser.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/classfile/classFileParser.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -4080,8 +4080,7 @@ // Generate any default methods - default methods are interface methods // that have a default implementation. This is new with Lambda project. - if (has_default_methods && !access_flags.is_interface() && - local_interfaces->length() > 0) { + if (has_default_methods && !access_flags.is_interface() ) { DefaultMethods::generate_default_methods( this_klass(), &all_mirandas, CHECK_(nullHandle)); }
--- a/src/share/vm/classfile/defaultMethods.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/classfile/defaultMethods.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -345,7 +345,6 @@ } Symbol* generate_no_defaults_message(TRAPS) const; - Symbol* generate_abstract_method_message(Method* method, TRAPS) const; Symbol* generate_conflicts_message(GrowableArray<Method*>* methods, TRAPS) const; public: @@ -404,20 +403,19 @@ _exception_message = generate_no_defaults_message(CHECK); _exception_name = vmSymbols::java_lang_AbstractMethodError(); } else if (qualified_methods.length() == 1) { + // leave abstract methods alone, they will be found via normal search path Method* method = qualified_methods.at(0); - if (method->is_abstract()) { - _exception_message = generate_abstract_method_message(method, CHECK); - _exception_name = vmSymbols::java_lang_AbstractMethodError(); - } else { + if (!method->is_abstract()) { _selected_target = qualified_methods.at(0); } } else { _exception_message = generate_conflicts_message(&qualified_methods,CHECK); _exception_name = vmSymbols::java_lang_IncompatibleClassChangeError(); + if (TraceDefaultMethods) { + _exception_message->print_value_on(tty); + tty->print_cr(""); + } } - - assert((has_target() ^ throws_exception()) == 1, - "One and only one must be true"); } bool contains_signature(Symbol* query) { @@ -475,20 +473,6 @@ return SymbolTable::new_symbol("No qualifying defaults found", CHECK_NULL); } -Symbol* MethodFamily::generate_abstract_method_message(Method* method, TRAPS) const { - Symbol* klass = method->klass_name(); - Symbol* name = method->name(); - Symbol* sig = method->signature(); - stringStream ss; - ss.print("Method "); - ss.write((const char*)klass->bytes(), klass->utf8_length()); - ss.print("."); - ss.write((const char*)name->bytes(), name->utf8_length()); - ss.write((const char*)sig->bytes(), sig->utf8_length()); - ss.print(" is abstract"); - return SymbolTable::new_symbol(ss.base(), (int)ss.size(), CHECK_NULL); -} - Symbol* MethodFamily::generate_conflicts_message(GrowableArray<Method*>* methods, TRAPS) const { stringStream ss; ss.print("Conflicting default methods:"); @@ -595,6 +579,18 @@ #endif // ndef PRODUCT }; +static bool already_in_vtable_slots(GrowableArray<EmptyVtableSlot*>* slots, Method* m) { + bool found = false; + for (int j = 0; j < slots->length(); ++j) { + if (slots->at(j)->name() == m->name() && + slots->at(j)->signature() == m->signature() ) { + found = true; + break; + } + } + return found; +} + static GrowableArray<EmptyVtableSlot*>* find_empty_vtable_slots( InstanceKlass* klass, GrowableArray<Method*>* mirandas, TRAPS) { @@ -604,8 +600,10 @@ // All miranda methods are obvious candidates for (int i = 0; i < mirandas->length(); ++i) { - EmptyVtableSlot* slot = new EmptyVtableSlot(mirandas->at(i)); - slots->append(slot); + Method* m = mirandas->at(i); + if (!already_in_vtable_slots(slots, m)) { + slots->append(new EmptyVtableSlot(m)); + } } // Also any overpasses in our superclasses, that we haven't implemented. @@ -621,7 +619,26 @@ // unless we have a real implementation of it in the current class. Method* impl = klass->lookup_method(m->name(), m->signature()); if (impl == NULL || impl->is_overpass()) { - slots->append(new EmptyVtableSlot(m)); + if (!already_in_vtable_slots(slots, m)) { + slots->append(new EmptyVtableSlot(m)); + } + } + } + } + + // also any default methods in our superclasses + if (super->default_methods() != NULL) { + for (int i = 0; i < super->default_methods()->length(); ++i) { + Method* m = super->default_methods()->at(i); + // m is a method that would have been a miranda if not for the + // default method processing that occurred on behalf of our superclass, + // so it's a method we want to re-examine in this new context. That is, + // unless we have a real implementation of it in the current class. + Method* impl = klass->lookup_method(m->name(), m->signature()); + if (impl == NULL || impl->is_overpass()) { + if (!already_in_vtable_slots(slots, m)) { + slots->append(new EmptyVtableSlot(m)); + } } } } @@ -679,7 +696,7 @@ // private interface methods are not candidates for default methods // invokespecial to private interface methods doesn't use default method logic // future: take access controls into account for superclass methods - if (m != NULL && (!iklass->is_interface() || m->is_public())) { + if (m != NULL && !m->is_static() && (!iklass->is_interface() || m->is_public())) { if (_family == NULL) { _family = new StatefulMethodFamily(); } @@ -700,7 +717,7 @@ -static void create_overpasses( +static void create_defaults_and_exceptions( GrowableArray<EmptyVtableSlot*>* slots, InstanceKlass* klass, TRAPS); static void generate_erased_defaults( @@ -721,6 +738,8 @@ static void merge_in_new_methods(InstanceKlass* klass, GrowableArray<Method*>* new_methods, TRAPS); +static void create_default_methods( InstanceKlass* klass, + GrowableArray<Method*>* new_methods, TRAPS); // This is the guts of the default methods implementation. This is called just // after the classfile has been parsed if some ancestor has default methods. @@ -782,7 +801,7 @@ } #endif // ndef PRODUCT - create_overpasses(empty_slots, klass, CHECK); + create_defaults_and_exceptions(empty_slots, klass, CHECK); #ifndef PRODUCT if (TraceDefaultMethods) { @@ -791,66 +810,6 @@ #endif // ndef PRODUCT } - - -#ifdef ASSERT -// Return true is broad type is a covariant return of narrow type -static bool covariant_return_type(BasicType narrow, BasicType broad) { - if (narrow == broad) { - return true; - } - if (broad == T_OBJECT) { - return true; - } - return false; -} -#endif - -static int assemble_redirect( - BytecodeConstantPool* cp, BytecodeBuffer* buffer, - Symbol* incoming, Method* target, TRAPS) { - - BytecodeAssembler assem(buffer, cp); - - SignatureStream in(incoming, true); - SignatureStream out(target->signature(), true); - u2 parameter_count = 0; - - assem.aload(parameter_count++); // load 'this' - - while (!in.at_return_type()) { - assert(!out.at_return_type(), "Parameter counts do not match"); - BasicType bt = in.type(); - assert(out.type() == bt, "Parameter types are not compatible"); - assem.load(bt, parameter_count); - if (in.is_object() && in.as_symbol(THREAD) != out.as_symbol(THREAD)) { - assem.checkcast(out.as_symbol(THREAD)); - } else if (bt == T_LONG || bt == T_DOUBLE) { - ++parameter_count; // longs and doubles use two slots - } - ++parameter_count; - in.next(); - out.next(); - } - assert(out.at_return_type(), "Parameter counts do not match"); - assert(covariant_return_type(out.type(), in.type()), "Return types are not compatible"); - - if (parameter_count == 1 && (in.type() == T_LONG || in.type() == T_DOUBLE)) { - ++parameter_count; // need room for return value - } - if (target->method_holder()->is_interface()) { - assem.invokespecial(target); - } else { - assem.invokevirtual(target); - } - - if (in.is_object() && in.as_symbol(THREAD) != out.as_symbol(THREAD)) { - assem.checkcast(in.as_symbol(THREAD)); - } - assem._return(in.type()); - return parameter_count; -} - static int assemble_method_error( BytecodeConstantPool* cp, BytecodeBuffer* buffer, Symbol* errorName, Symbol* message, TRAPS) { @@ -924,18 +883,18 @@ } } -// A "bridge" is a method created by javac to bridge the gap between -// an implementation and a generically-compatible, but different, signature. -// Bridges have actual bytecode implementation in classfiles. -// An "overpass", on the other hand, performs the same function as a bridge -// but does not occur in a classfile; the VM creates overpass itself, -// when it needs a path to get from a call site to an default method, and -// a bridge doesn't exist. -static void create_overpasses( +// Create default_methods list for the current class. +// With the VM only processing erased signatures, the VM only +// creates an overpass in a conflict case or a case with no candidates. +// This allows virtual methods to override the overpass, but ensures +// that a local method search will find the exception rather than an abstract +// or default method that is not a valid candidate. +static void create_defaults_and_exceptions( GrowableArray<EmptyVtableSlot*>* slots, InstanceKlass* klass, TRAPS) { GrowableArray<Method*> overpasses; + GrowableArray<Method*> defaults; BytecodeConstantPool bpool(klass->constants()); for (int i = 0; i < slots->length(); ++i) { @@ -943,7 +902,6 @@ if (slot->is_bound()) { MethodFamily* method = slot->get_binding(); - int max_stack = 0; BytecodeBuffer buffer; #ifndef PRODUCT @@ -953,26 +911,27 @@ tty->print_cr(""); if (method->has_target()) { method->print_selected(tty, 1); - } else { + } else if (method->throws_exception()) { method->print_exception(tty, 1); } } #endif // ndef PRODUCT + if (method->has_target()) { Method* selected = method->get_selected_target(); if (selected->method_holder()->is_interface()) { - max_stack = assemble_redirect( - &bpool, &buffer, slot->signature(), selected, CHECK); + defaults.push(selected); } } else if (method->throws_exception()) { - max_stack = assemble_method_error(&bpool, &buffer, method->get_exception_name(), method->get_exception_message(), CHECK); - } - if (max_stack != 0) { + int max_stack = assemble_method_error(&bpool, &buffer, + method->get_exception_name(), method->get_exception_message(), CHECK); AccessFlags flags = accessFlags_from( JVM_ACC_PUBLIC | JVM_ACC_SYNTHETIC | JVM_ACC_BRIDGE); - Method* m = new_method(&bpool, &buffer, slot->name(), slot->signature(), + Method* m = new_method(&bpool, &buffer, slot->name(), slot->signature(), flags, max_stack, slot->size_of_parameters(), ConstMethod::OVERPASS, CHECK); + // We push to the methods list: + // overpass methods which are exception throwing methods if (m != NULL) { overpasses.push(m); } @@ -983,11 +942,31 @@ #ifndef PRODUCT if (TraceDefaultMethods) { tty->print_cr("Created %d overpass methods", overpasses.length()); + tty->print_cr("Created %d default methods", defaults.length()); } #endif // ndef PRODUCT - switchover_constant_pool(&bpool, klass, &overpasses, CHECK); - merge_in_new_methods(klass, &overpasses, CHECK); + if (overpasses.length() > 0) { + switchover_constant_pool(&bpool, klass, &overpasses, CHECK); + merge_in_new_methods(klass, &overpasses, CHECK); + } + if (defaults.length() > 0) { + create_default_methods(klass, &defaults, CHECK); + } +} + +static void create_default_methods( InstanceKlass* klass, + GrowableArray<Method*>* new_methods, TRAPS) { + + int new_size = new_methods->length(); + Array<Method*>* total_default_methods = MetadataFactory::new_array<Method*>( + klass->class_loader_data(), new_size, NULL, CHECK); + for (int index = 0; index < new_size; index++ ) { + total_default_methods->at_put(index, new_methods->at(index)); + } + Method::sort_methods(total_default_methods, false, false); + + klass->set_default_methods(total_default_methods); } static void sort_methods(GrowableArray<Method*>* methods) {
--- a/src/share/vm/classfile/symbolTable.hpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/classfile/symbolTable.hpp Wed Oct 09 22:01:59 2013 -0400 @@ -107,18 +107,13 @@ add(loader_data, cp, names_count, name, lengths, cp_indices, hashValues, THREAD); } - // Table size - enum { - symbol_table_size = 20011 - }; - Symbol* lookup(int index, const char* name, int len, unsigned int hash); SymbolTable() - : Hashtable<Symbol*, mtSymbol>(symbol_table_size, sizeof (HashtableEntry<Symbol*, mtSymbol>)) {} + : Hashtable<Symbol*, mtSymbol>(SymbolTableSize, sizeof (HashtableEntry<Symbol*, mtSymbol>)) {} SymbolTable(HashtableBucket<mtSymbol>* t, int number_of_entries) - : Hashtable<Symbol*, mtSymbol>(symbol_table_size, sizeof (HashtableEntry<Symbol*, mtSymbol>), t, + : Hashtable<Symbol*, mtSymbol>(SymbolTableSize, sizeof (HashtableEntry<Symbol*, mtSymbol>), t, number_of_entries) {} // Arena for permanent symbols (null class loader) that are never unloaded @@ -136,6 +131,9 @@ // The symbol table static SymbolTable* the_table() { return _the_table; } + // Size of one bucket in the string table. Used when checking for rollover. + static uint bucket_size() { return sizeof(HashtableBucket<mtSymbol>); } + static void create_table() { assert(_the_table == NULL, "One symbol table allowed."); _the_table = new SymbolTable(); @@ -145,8 +143,11 @@ static void create_table(HashtableBucket<mtSymbol>* t, int length, int number_of_entries) { assert(_the_table == NULL, "One symbol table allowed."); - assert(length == symbol_table_size * sizeof(HashtableBucket<mtSymbol>), - "bad shared symbol size."); + + // If CDS archive used a different symbol table size, use that size instead + // which is better than giving an error. + SymbolTableSize = length/bucket_size(); + _the_table = new SymbolTable(t, number_of_entries); // if CDS give symbol table a default arena size since most symbols // are already allocated in the shared misc section.
--- a/src/share/vm/classfile/verifier.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/classfile/verifier.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -2442,10 +2442,16 @@ bool subtype = ref_class_type.is_assignable_from( current_type(), this, CHECK_VERIFY(this)); if (!subtype) { - verify_error(ErrorContext::bad_code(bci), - "Bad invokespecial instruction: " - "current class isn't assignable to reference class."); - return; + if (current_class()->is_anonymous()) { + subtype = ref_class_type.is_assignable_from(VerificationType::reference_type( + current_class()->host_klass()->name()), this, CHECK_VERIFY(this)); + } + if (!subtype) { + verify_error(ErrorContext::bad_code(bci), + "Bad invokespecial instruction: " + "current class isn't assignable to reference class."); + return; + } } } // Match method descriptor with operand stack @@ -2461,7 +2467,28 @@ } else { // other methods // Ensures that target class is assignable to method class. if (opcode == Bytecodes::_invokespecial) { - current_frame->pop_stack(current_type(), CHECK_VERIFY(this)); + if (!current_class()->is_anonymous()) { + current_frame->pop_stack(current_type(), CHECK_VERIFY(this)); + } else { + // anonymous class invokespecial calls: either the + // operand stack/objectref is a subtype of the current class OR + // the objectref is a subtype of the host_klass of the current class + // to allow an anonymous class to reference methods in the host_klass + VerificationType top = current_frame->pop_stack(CHECK_VERIFY(this)); + bool subtype = current_type().is_assignable_from(top, this, CHECK_VERIFY(this)); + if (!subtype) { + VerificationType hosttype = + VerificationType::reference_type(current_class()->host_klass()->name()); + subtype = hosttype.is_assignable_from(top, this, CHECK_VERIFY(this)); + } + if (!subtype) { + verify_error( ErrorContext::bad_type(current_frame->offset(), + current_frame->stack_top_ctx(), + TypeOrigin::implicit(top)), + "Bad type on operand stack"); + return; + } + } } else if (opcode == Bytecodes::_invokevirtual) { VerificationType stack_object_type = current_frame->pop_stack(ref_class_type, CHECK_VERIFY(this));
--- a/src/share/vm/code/dependencies.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/code/dependencies.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2005, 2013, 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 @@ -812,8 +812,8 @@ Klass* k = ctxk; Method* lm = k->lookup_method(m->name(), m->signature()); if (lm == NULL && k->oop_is_instance()) { - // It might be an abstract interface method, devoid of mirandas. - lm = ((InstanceKlass*)k)->lookup_method_in_all_interfaces(m->name(), + // It might be an interface method + lm = ((InstanceKlass*)k)->lookup_method_in_ordered_interfaces(m->name(), m->signature()); } if (lm == m)
--- a/src/share/vm/interpreter/linkResolver.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/interpreter/linkResolver.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -1,4 +1,5 @@ /* + * Copyright (c) 1997, 2013, 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 @@ -221,8 +222,17 @@ // // According to JVM spec. $5.4.3c & $5.4.3d +// Look up method in klasses, including static methods +// Then look up local default methods void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { Method* result_oop = klass->uncached_lookup_method(name, signature); + if (result_oop == NULL) { + Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); + if (default_methods != NULL) { + result_oop = InstanceKlass::find_method(default_methods, name, signature); + } + } + if (EnableInvokeDynamic && result_oop != NULL) { vmIntrinsics::ID iid = result_oop->intrinsic_id(); if (MethodHandles::is_signature_polymorphic(iid)) { @@ -234,6 +244,7 @@ } // returns first instance method +// Looks up method in classes, then looks up local default methods void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { Method* result_oop = klass->uncached_lookup_method(name, signature); result = methodHandle(THREAD, result_oop); @@ -241,13 +252,38 @@ klass = KlassHandle(THREAD, result->method_holder()->super()); result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature)); } + + if (result.is_null()) { + Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods(); + if (default_methods != NULL) { + result = methodHandle(InstanceKlass::find_method(default_methods, name, signature)); + assert(result.is_null() || !result->is_static(), "static defaults not allowed"); + } + } } +int LinkResolver::vtable_index_of_interface_method(KlassHandle klass, + methodHandle resolved_method, TRAPS) { -int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { - ResourceMark rm(THREAD); - klassVtable *vt = InstanceKlass::cast(klass())->vtable(); - return vt->index_of_miranda(name, signature); + int vtable_index = Method::invalid_vtable_index; + Symbol* name = resolved_method->name(); + Symbol* signature = resolved_method->signature(); + + // First check in default method array + if (!resolved_method->is_abstract() && + (InstanceKlass::cast(klass())->default_methods() != NULL)) { + int index = InstanceKlass::find_method_index(InstanceKlass::cast(klass())->default_methods(), name, signature); + if (index >= 0 ) { + vtable_index = InstanceKlass::cast(klass())->default_vtable_indices()->at(index); + } + } + if (vtable_index == Method::invalid_vtable_index) { + // get vtable_index for miranda methods + ResourceMark rm(THREAD); + klassVtable *vt = InstanceKlass::cast(klass())->vtable(); + vtable_index = vt->index_of_miranda(name, signature); + } + return vtable_index; } void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) { @@ -625,6 +661,12 @@ resolved_method->method_holder()->internal_name() ); resolved_method->access_flags().print_on(tty); + if (resolved_method->is_default_method()) { + tty->print("default"); + } + if (resolved_method->is_overpass()) { + tty->print("overpass"); + } tty->cr(); } } @@ -853,6 +895,7 @@ resolved_method->signature())); THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); } + if (TraceItables && Verbose) { ResourceMark rm(THREAD); tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", @@ -864,8 +907,7 @@ resolved_method->method_holder()->internal_name() ); resolved_method->access_flags().print_on(tty); - if (resolved_method->method_holder()->is_interface() && - !resolved_method->is_abstract()) { + if (resolved_method->is_default_method()) { tty->print("default"); } if (resolved_method->is_overpass()) { @@ -945,10 +987,12 @@ sel_method->method_holder()->internal_name() ); sel_method->access_flags().print_on(tty); - if (sel_method->method_holder()->is_interface() && - !sel_method->is_abstract()) { + if (sel_method->is_default_method()) { tty->print("default"); } + if (sel_method->is_overpass()) { + tty->print("overpass"); + } tty->cr(); } @@ -996,26 +1040,25 @@ THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf); } - if (PrintVtables && Verbose) { - ResourceMark rm(THREAD); - tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", - (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), - (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), - Method::name_and_sig_as_C_string(resolved_klass(), - resolved_method->name(), - resolved_method->signature()), - resolved_method->method_holder()->internal_name() - ); - resolved_method->access_flags().print_on(tty); - if (resolved_method->method_holder()->is_interface() && - !resolved_method->is_abstract()) { - tty->print("default"); - } - if (resolved_method->is_overpass()) { - tty->print("overpass"); - } - tty->cr(); - } + if (PrintVtables && Verbose) { + ResourceMark rm(THREAD); + tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ", + (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()), + (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()), + Method::name_and_sig_as_C_string(resolved_klass(), + resolved_method->name(), + resolved_method->signature()), + resolved_method->method_holder()->internal_name() + ); + resolved_method->access_flags().print_on(tty); + if (resolved_method->is_default_method()) { + tty->print("default"); + } + if (resolved_method->is_overpass()) { + tty->print("overpass"); + } + tty->cr(); + } } // throws runtime exceptions @@ -1045,10 +1088,8 @@ // do lookup based on receiver klass using the vtable index if (resolved_method->method_holder()->is_interface()) { // miranda method - vtable_index = vtable_index_of_miranda_method(resolved_klass, - resolved_method->name(), - resolved_method->signature(), CHECK); - + vtable_index = vtable_index_of_interface_method(resolved_klass, + resolved_method, CHECK); assert(vtable_index >= 0 , "we should have valid vtable index at this point"); InstanceKlass* inst = InstanceKlass::cast(recv_klass()); @@ -1104,11 +1145,10 @@ vtable_index ); selected_method->access_flags().print_on(tty); - if (selected_method->method_holder()->is_interface() && - !selected_method->is_abstract()) { + if (selected_method->is_default_method()) { tty->print("default"); } - if (resolved_method->is_overpass()) { + if (selected_method->is_overpass()) { tty->print("overpass"); } tty->cr(); @@ -1191,7 +1231,6 @@ sel_method->name(), sel_method->signature())); } - // check if abstract if (check_null_and_abstract && sel_method->is_abstract()) { ResourceMark rm(THREAD); @@ -1220,11 +1259,10 @@ sel_method->method_holder()->internal_name() ); sel_method->access_flags().print_on(tty); - if (sel_method->method_holder()->is_interface() && - !sel_method->is_abstract()) { + if (sel_method->is_default_method()) { tty->print("default"); } - if (resolved_method->is_overpass()) { + if (sel_method->is_overpass()) { tty->print("overpass"); } tty->cr();
--- a/src/share/vm/interpreter/linkResolver.hpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/interpreter/linkResolver.hpp Wed Oct 09 22:01:59 2013 -0400 @@ -130,8 +130,7 @@ static void lookup_polymorphic_method (methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, KlassHandle current_klass, Handle *appendix_result_or_null, Handle *method_type_result, TRAPS); - static int vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS); - + static int vtable_index_of_interface_method(KlassHandle klass, methodHandle resolved_method, TRAPS); static void resolve_klass (KlassHandle& result, constantPoolHandle pool, int index, TRAPS); static void resolve_pool (KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature, KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS);
--- a/src/share/vm/memory/heapInspection.hpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/memory/heapInspection.hpp Wed Oct 09 22:01:59 2013 -0400 @@ -73,6 +73,10 @@ "Number of bytes used by the InstanceKlass::methods() array") \ f(method_ordering_bytes, IK_method_ordering, \ "Number of bytes used by the InstanceKlass::method_ordering() array") \ + f(default_methods_array_bytes, IK_default_methods, \ + "Number of bytes used by the InstanceKlass::default_methods() array") \ + f(default_vtable_indices_bytes, IK_default_vtable_indices, \ + "Number of bytes used by the InstanceKlass::default_vtable_indices() array") \ f(local_interfaces_bytes, IK_local_interfaces, \ "Number of bytes used by the InstanceKlass::local_interfaces() array") \ f(transitive_interfaces_bytes, IK_transitive_interfaces, \
--- a/src/share/vm/oops/instanceKlass.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/oops/instanceKlass.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -238,6 +238,13 @@ } } +// create a new array of vtable_indices for default methods +Array<int>* InstanceKlass::create_new_default_vtable_indices(int len, TRAPS) { + Array<int>* vtable_indices = MetadataFactory::new_array<int>(class_loader_data(), len, CHECK_NULL); + assert(default_vtable_indices() == NULL, "only create once"); + set_default_vtable_indices(vtable_indices); + return vtable_indices; +} InstanceKlass::InstanceKlass(int vtable_len, int itable_len, @@ -263,6 +270,8 @@ set_array_klasses(NULL); set_methods(NULL); set_method_ordering(NULL); + set_default_methods(NULL); + set_default_vtable_indices(NULL); set_local_interfaces(NULL); set_transitive_interfaces(NULL); init_implementor(); @@ -376,6 +385,21 @@ } set_method_ordering(NULL); + // default methods can be empty + if (default_methods() != NULL && + default_methods() != Universe::the_empty_method_array()) { + MetadataFactory::free_array<Method*>(loader_data, default_methods()); + } + // Do NOT deallocate the default methods, they are owned by superinterfaces. + set_default_methods(NULL); + + // default methods vtable indices can be empty + if (default_vtable_indices() != NULL) { + MetadataFactory::free_array<int>(loader_data, default_vtable_indices()); + } + set_default_vtable_indices(NULL); + + // This array is in Klass, but remove it with the InstanceKlass since // this place would be the only caller and it can share memory with transitive // interfaces. @@ -1354,32 +1378,44 @@ return -1; } +// find_method looks up the name/signature in the local methods array Method* InstanceKlass::find_method(Symbol* name, Symbol* signature) const { return InstanceKlass::find_method(methods(), name, signature); } +// find_method looks up the name/signature in the local methods array Method* InstanceKlass::find_method( Array<Method*>* methods, Symbol* name, Symbol* signature) { + int hit = find_method_index(methods, name, signature); + return hit >= 0 ? methods->at(hit): NULL; +} + +// Used directly for default_methods to find the index into the +// default_vtable_indices, and indirectly by find_method +// find_method_index looks in the local methods array to return the index +// of the matching name/signature +int InstanceKlass::find_method_index( + Array<Method*>* methods, Symbol* name, Symbol* signature) { int hit = binary_search(methods, name); if (hit != -1) { Method* m = methods->at(hit); // Do linear search to find matching signature. First, quick check // for common case - if (m->signature() == signature) return m; + if (m->signature() == signature) return hit; // search downwards through overloaded methods int i; for (i = hit - 1; i >= 0; --i) { Method* m = methods->at(i); assert(m->is_method(), "must be method"); if (m->name() != name) break; - if (m->signature() == signature) return m; + if (m->signature() == signature) return i; } // search upwards for (i = hit + 1; i < methods->length(); ++i) { Method* m = methods->at(i); assert(m->is_method(), "must be method"); if (m->name() != name) break; - if (m->signature() == signature) return m; + if (m->signature() == signature) return i; } // not found #ifdef ASSERT @@ -1387,9 +1423,8 @@ assert(index == -1, err_msg("binary search should have found entry %d", index)); #endif } - return NULL; + return -1; } - int InstanceKlass::find_method_by_name(Symbol* name, int* end) { return find_method_by_name(methods(), name, end); } @@ -1408,6 +1443,7 @@ return -1; } +// lookup_method searches both the local methods array and all superclasses methods arrays Method* InstanceKlass::uncached_lookup_method(Symbol* name, Symbol* signature) const { Klass* klass = const_cast<InstanceKlass*>(this); while (klass != NULL) { @@ -1418,6 +1454,21 @@ return NULL; } +// lookup a method in the default methods list then in all transitive interfaces +// Do NOT return private or static methods +Method* InstanceKlass::lookup_method_in_ordered_interfaces(Symbol* name, + Symbol* signature) const { + Method* m = NULL; + if (default_methods() != NULL) { + m = find_method(default_methods(), name, signature); + } + // Look up interfaces + if (m == NULL) { + m = lookup_method_in_all_interfaces(name, signature); + } + return m; +} + // lookup a method in all the interfaces that this class implements // Do NOT return private or static methods, new in JDK8 which are not externally visible // They should only be found in the initial InterfaceMethodRef @@ -2548,6 +2599,42 @@ return m; } + +#if INCLUDE_JVMTI +// update default_methods for redefineclasses for methods that are +// not yet in the vtable due to concurrent subclass define and superinterface +// redefinition +// Note: those in the vtable, should have been updated via adjust_method_entries +void InstanceKlass::adjust_default_methods(Method** old_methods, Method** new_methods, + int methods_length, bool* trace_name_printed) { + // search the default_methods for uses of either obsolete or EMCP methods + if (default_methods() != NULL) { + for (int j = 0; j < methods_length; j++) { + Method* old_method = old_methods[j]; + Method* new_method = new_methods[j]; + + for (int index = 0; index < default_methods()->length(); index ++) { + if (default_methods()->at(index) == old_method) { + default_methods()->at_put(index, new_method); + if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { + if (!(*trace_name_printed)) { + // RC_TRACE_MESG macro has an embedded ResourceMark + RC_TRACE_MESG(("adjust: klassname=%s default methods from name=%s", + external_name(), + old_method->method_holder()->external_name())); + *trace_name_printed = true; + } + RC_TRACE(0x00100000, ("default method update: %s(%s) ", + new_method->name()->as_C_string(), + new_method->signature()->as_C_string())); + } + } + } + } + } +} +#endif // INCLUDE_JVMTI + // On-stack replacement stuff void InstanceKlass::add_osr_nmethod(nmethod* n) { // only one compilation can be active @@ -2742,11 +2829,21 @@ st->print(BULLET"methods: "); methods()->print_value_on(st); st->cr(); if (Verbose || WizardMode) { Array<Method*>* method_array = methods(); - for(int i = 0; i < method_array->length(); i++) { + for (int i = 0; i < method_array->length(); i++) { st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); } } - st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); + st->print(BULLET"method ordering: "); method_ordering()->print_value_on(st); st->cr(); + st->print(BULLET"default_methods: "); default_methods()->print_value_on(st); st->cr(); + if (Verbose && default_methods() != NULL) { + Array<Method*>* method_array = default_methods(); + for (int i = 0; i < method_array->length(); i++) { + st->print("%d : ", i); method_array->at(i)->print_value(); st->cr(); + } + } + if (default_vtable_indices() != NULL) { + st->print(BULLET"default vtable indices: "); default_vtable_indices()->print_value_on(st); st->cr(); + } st->print(BULLET"local interfaces: "); local_interfaces()->print_value_on(st); st->cr(); st->print(BULLET"trans. interfaces: "); transitive_interfaces()->print_value_on(st); st->cr(); st->print(BULLET"constants: "); constants()->print_value_on(st); st->cr(); @@ -3099,6 +3196,19 @@ } } + // Verify default methods + if (default_methods() != NULL) { + Array<Method*>* methods = this->default_methods(); + for (int j = 0; j < methods->length(); j++) { + guarantee(methods->at(j)->is_method(), "non-method in methods array"); + } + for (int j = 0; j < methods->length() - 1; j++) { + Method* m1 = methods->at(j); + Method* m2 = methods->at(j + 1); + guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly"); + } + } + // Verify JNI static field identifiers if (jni_ids() != NULL) { jni_ids()->verify(this);
--- a/src/share/vm/oops/instanceKlass.hpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/oops/instanceKlass.hpp Wed Oct 09 22:01:59 2013 -0400 @@ -269,12 +269,18 @@ // Method array. Array<Method*>* _methods; + // Default Method Array, concrete methods inherited from interfaces + Array<Method*>* _default_methods; // Interface (Klass*s) this class declares locally to implement. Array<Klass*>* _local_interfaces; // Interface (Klass*s) this class implements transitively. Array<Klass*>* _transitive_interfaces; // Int array containing the original order of method in the class file (for JVMTI). Array<int>* _method_ordering; + // Int array containing the vtable_indices for default_methods + // offset matches _default_methods offset + Array<int>* _default_vtable_indices; + // Instance and static variable information, starts with 6-tuples of shorts // [access, name index, sig index, initval index, low_offset, high_offset] // for all fields, followed by the generic signature data at the end of @@ -356,6 +362,15 @@ void set_method_ordering(Array<int>* m) { _method_ordering = m; } void copy_method_ordering(intArray* m, TRAPS); + // default_methods + Array<Method*>* default_methods() const { return _default_methods; } + void set_default_methods(Array<Method*>* a) { _default_methods = a; } + + // default method vtable_indices + Array<int>* default_vtable_indices() const { return _default_vtable_indices; } + void set_default_vtable_indices(Array<int>* v) { _default_vtable_indices = v; } + Array<int>* create_new_default_vtable_indices(int len, TRAPS); + // interfaces Array<Klass*>* local_interfaces() const { return _local_interfaces; } void set_local_interfaces(Array<Klass*>* a) { @@ -501,12 +516,18 @@ Method* find_method(Symbol* name, Symbol* signature) const; static Method* find_method(Array<Method*>* methods, Symbol* name, Symbol* signature); + // find a local method index in default_methods (returns -1 if not found) + static int find_method_index(Array<Method*>* methods, Symbol* name, Symbol* signature); + // lookup operation (returns NULL if not found) Method* uncached_lookup_method(Symbol* name, Symbol* signature) const; // lookup a method in all the interfaces that this class implements // (returns NULL if not found) Method* lookup_method_in_all_interfaces(Symbol* name, Symbol* signature) const; + // lookup a method in local defaults then in all interfaces + // (returns NULL if not found) + Method* lookup_method_in_ordered_interfaces(Symbol* name, Symbol* signature) const; // Find method indices by name. If a method with the specified name is // found the index to the first method is returned, and 'end' is filled in @@ -910,6 +931,11 @@ klassItable* itable() const; // return new klassItable wrapper Method* method_at_itable(Klass* holder, int index, TRAPS); +#if INCLUDE_JVMTI + void adjust_default_methods(Method** old_methods, Method** new_methods, + int methods_length, bool* trace_name_printed); +#endif // INCLUDE_JVMTI + // Garbage collection void oop_follow_contents(oop obj); int oop_adjust_pointers(oop obj);
--- a/src/share/vm/oops/klassVtable.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/oops/klassVtable.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -83,7 +83,7 @@ GrowableArray<Method*> new_mirandas(20); // compute the number of mirandas methods that must be added to the end - get_mirandas(&new_mirandas, all_mirandas, super, methods, local_interfaces); + get_mirandas(&new_mirandas, all_mirandas, super, methods, NULL, local_interfaces); *num_new_mirandas = new_mirandas.length(); vtable_length += *num_new_mirandas * vtableEntry::size(); @@ -186,7 +186,7 @@ assert(methods->at(i)->is_method(), "must be a Method*"); methodHandle mh(THREAD, methods->at(i)); - bool needs_new_entry = update_inherited_vtable(ik(), mh, super_vtable_len, checkconstraints, CHECK); + bool needs_new_entry = update_inherited_vtable(ik(), mh, super_vtable_len, -1, checkconstraints, CHECK); if (needs_new_entry) { put_method_at(mh(), initialized); @@ -195,7 +195,35 @@ } } - // add miranda methods to end of vtable. + // update vtable with default_methods + Array<Method*>* default_methods = ik()->default_methods(); + if (default_methods != NULL) { + len = default_methods->length(); + if (len > 0) { + Array<int>* def_vtable_indices = NULL; + if ((def_vtable_indices = ik()->default_vtable_indices()) == NULL) { + def_vtable_indices = ik()->create_new_default_vtable_indices(len, CHECK); + } else { + assert(def_vtable_indices->length() == len, "reinit vtable len?"); + } + for (int i = 0; i < len; i++) { + HandleMark hm(THREAD); + assert(default_methods->at(i)->is_method(), "must be a Method*"); + methodHandle mh(THREAD, default_methods->at(i)); + + bool needs_new_entry = update_inherited_vtable(ik(), mh, super_vtable_len, i, checkconstraints, CHECK); + + // needs new entry + if (needs_new_entry) { + put_method_at(mh(), initialized); + def_vtable_indices->at_put(i, initialized); //set vtable index + initialized++; + } + } + } + } + + // add miranda methods; it will also return the updated initialized initialized = fill_in_mirandas(initialized); // In class hierarchies where the accessibility is not increasing (i.e., going from private -> @@ -230,14 +258,19 @@ #ifndef PRODUCT if (PrintVtables && Verbose) { ResourceMark rm(THREAD); + char* sig = target_method()->name_and_sig_as_C_string(); tty->print("transitive overriding superclass %s with %s::%s index %d, original flags: ", supersuperklass->internal_name(), - _klass->internal_name(), (target_method() != NULL) ? - target_method()->name()->as_C_string() : "<NULL>", vtable_index); + _klass->internal_name(), sig, vtable_index); super_method->access_flags().print_on(tty); + if (super_method->is_default_method()) { + tty->print("default"); + } tty->print("overriders flags: "); target_method->access_flags().print_on(tty); - tty->cr(); + if (target_method->is_default_method()) { + tty->print("default"); + } } #endif /*PRODUCT*/ break; // return found superk @@ -258,16 +291,31 @@ // OR return true if a new vtable entry is required. // Only called for InstanceKlass's, i.e. not for arrays // If that changed, could not use _klass as handle for klass -bool klassVtable::update_inherited_vtable(InstanceKlass* klass, methodHandle target_method, int super_vtable_len, - bool checkconstraints, TRAPS) { +bool klassVtable::update_inherited_vtable(InstanceKlass* klass, methodHandle target_method, + int super_vtable_len, int default_index, + bool checkconstraints, TRAPS) { ResourceMark rm; bool allocate_new = true; assert(klass->oop_is_instance(), "must be InstanceKlass"); - assert(klass == target_method()->method_holder(), "caller resp."); - // Initialize the method's vtable index to "nonvirtual". - // If we allocate a vtable entry, we will update it to a non-negative number. - target_method()->set_vtable_index(Method::nonvirtual_vtable_index); + Array<int>* def_vtable_indices = NULL; + bool is_default = false; + // default methods are concrete methods in superinterfaces which are added to the vtable + // with their real method_holder + // Since vtable and itable indices share the same storage, don't touch + // the default method's real vtable/itable index + // default_vtable_indices stores the vtable value relative to this inheritor + if (default_index >= 0 ) { + is_default = true; + def_vtable_indices = klass->default_vtable_indices(); + assert(def_vtable_indices != NULL, "def vtable alloc?"); + assert(default_index <= def_vtable_indices->length(), "def vtable len?"); + } else { + assert(klass == target_method()->method_holder(), "caller resp."); + // Initialize the method's vtable index to "nonvirtual". + // If we allocate a vtable entry, we will update it to a non-negative number. + target_method()->set_vtable_index(Method::nonvirtual_vtable_index); + } // Static and <init> methods are never in if (target_method()->is_static() || target_method()->name() == vmSymbols::object_initializer_name()) { @@ -284,6 +332,8 @@ // An interface never allocates new vtable slots, only inherits old ones. // This method will either be assigned its own itable index later, // or be assigned an inherited vtable index in the loop below. + // default methods store their vtable indices in the inheritors default_vtable_indices + assert (default_index == -1, "interfaces don't store resolved default methods"); target_method()->set_vtable_index(Method::pending_itable_index); } @@ -307,8 +357,15 @@ Symbol* name = target_method()->name(); Symbol* signature = target_method()->signature(); - Handle target_loader(THREAD, _klass()->class_loader()); - Symbol* target_classname = _klass->name(); + + KlassHandle target_klass(THREAD, target_method()->method_holder()); + if (target_klass == NULL) { + target_klass = _klass; + } + + Handle target_loader(THREAD, target_klass->class_loader()); + + Symbol* target_classname = target_klass->name(); for(int i = 0; i < super_vtable_len; i++) { Method* super_method = method_at(i); // Check if method name matches @@ -317,10 +374,14 @@ // get super_klass for method_holder for the found method InstanceKlass* super_klass = super_method->method_holder(); - if ((super_klass->is_override(super_method, target_loader, target_classname, THREAD)) || - ((klass->major_version() >= VTABLE_TRANSITIVE_OVERRIDE_VERSION) - && ((super_klass = find_transitive_override(super_klass, target_method, i, target_loader, - target_classname, THREAD)) != (InstanceKlass*)NULL))) { + if (is_default + || ((super_klass->is_override(super_method, target_loader, target_classname, THREAD)) + || ((klass->major_version() >= VTABLE_TRANSITIVE_OVERRIDE_VERSION) + && ((super_klass = find_transitive_override(super_klass, + target_method, i, target_loader, + target_classname, THREAD)) + != (InstanceKlass*)NULL)))) + { // overriding, so no new entry allocate_new = false; @@ -347,7 +408,7 @@ "%s used in the signature"; char* sig = target_method()->name_and_sig_as_C_string(); const char* loader1 = SystemDictionary::loader_name(target_loader()); - char* current = _klass->name()->as_C_string(); + char* current = target_klass->name()->as_C_string(); const char* loader2 = SystemDictionary::loader_name(super_loader()); char* failed_type_name = failed_type_symbol->as_C_string(); size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) + @@ -360,16 +421,39 @@ } } - put_method_at(target_method(), i); - target_method()->set_vtable_index(i); + put_method_at(target_method(), i); + if (!is_default) { + target_method()->set_vtable_index(i); + } else { + if (def_vtable_indices != NULL) { + def_vtable_indices->at_put(default_index, i); + } + assert(super_method->is_default_method() || super_method->is_overpass() + || super_method->is_abstract(), "default override error"); + } + + #ifndef PRODUCT if (PrintVtables && Verbose) { + ResourceMark rm(THREAD); + char* sig = target_method()->name_and_sig_as_C_string(); tty->print("overriding with %s::%s index %d, original flags: ", - _klass->internal_name(), (target_method() != NULL) ? - target_method()->name()->as_C_string() : "<NULL>", i); + target_klass->internal_name(), sig, i); super_method->access_flags().print_on(tty); + if (super_method->is_default_method()) { + tty->print("default"); + } + if (super_method->is_overpass()) { + tty->print("overpass"); + } tty->print("overriders flags: "); target_method->access_flags().print_on(tty); + if (target_method->is_default_method()) { + tty->print("default"); + } + if (target_method->is_overpass()) { + tty->print("overpass"); + } tty->cr(); } #endif /*PRODUCT*/ @@ -378,12 +462,25 @@ // but not override another. Once we override one, not need new #ifndef PRODUCT if (PrintVtables && Verbose) { + ResourceMark rm(THREAD); + char* sig = target_method()->name_and_sig_as_C_string(); tty->print("NOT overriding with %s::%s index %d, original flags: ", - _klass->internal_name(), (target_method() != NULL) ? - target_method()->name()->as_C_string() : "<NULL>", i); + target_klass->internal_name(), sig,i); super_method->access_flags().print_on(tty); + if (super_method->is_default_method()) { + tty->print("default"); + } + if (super_method->is_overpass()) { + tty->print("overpass"); + } tty->print("overriders flags: "); target_method->access_flags().print_on(tty); + if (target_method->is_default_method()) { + tty->print("default"); + } + if (target_method->is_overpass()) { + tty->print("overpass"); + } tty->cr(); } #endif /*PRODUCT*/ @@ -438,6 +535,14 @@ return false; } + // Concrete interface methods do not need new entries, they override + // abstract method entries using default inheritance rules + if (target_method()->method_holder() != NULL && + target_method()->method_holder()->is_interface() && + !target_method()->is_abstract() ) { + return false; + } + // we need a new entry if there is no superclass if (super == NULL) { return true; @@ -446,7 +551,7 @@ // private methods in classes always have a new entry in the vtable // specification interpretation since classic has // private methods not overriding - // JDK8 adds private methods in interfaces which require invokespecial + // JDK8 adds private methods in interfaces which require invokespecial if (target_method()->is_private()) { return true; } @@ -526,35 +631,40 @@ if (mhk->is_interface()) { assert(m->is_public(), "should be public"); assert(ik()->implements_interface(method_holder) , "this class should implement the interface"); - assert(is_miranda(m, ik()->methods(), ik()->super()), "should be a miranda_method"); + assert(is_miranda(m, ik()->methods(), ik()->default_methods(), ik()->super()), "should be a miranda_method"); return true; } return false; } -// check if a method is a miranda method, given a class's methods table and its super -// "miranda" means not static, not defined by this class, and not defined -// in super unless it is private and therefore inaccessible to this class. +// check if a method is a miranda method, given a class's methods table, +// its default_method table and its super +// "miranda" means not static, not defined by this class. +// private methods in interfaces do not belong in the miranda list. // the caller must make sure that the method belongs to an interface implemented by the class // Miranda methods only include public interface instance methods -// Not private methods, not static methods, not default = concrete abstract -bool klassVtable::is_miranda(Method* m, Array<Method*>* class_methods, Klass* super) { - if (m->is_static()) { +// Not private methods, not static methods, not default == concrete abstract +bool klassVtable::is_miranda(Method* m, Array<Method*>* class_methods, + Array<Method*>* default_methods, Klass* super) { + if (m->is_static() || m->is_private()) { return false; } Symbol* name = m->name(); Symbol* signature = m->signature(); if (InstanceKlass::find_method(class_methods, name, signature) == NULL) { // did not find it in the method table of the current class - if (super == NULL) { - // super doesn't exist - return true; - } + if ((default_methods == NULL) || + InstanceKlass::find_method(default_methods, name, signature) == NULL) { + if (super == NULL) { + // super doesn't exist + return true; + } - Method* mo = InstanceKlass::cast(super)->lookup_method(name, signature); - if (mo == NULL || mo->access_flags().is_private() ) { - // super class hierarchy does not implement it or protection is different - return true; + Method* mo = InstanceKlass::cast(super)->lookup_method(name, signature); + if (mo == NULL || mo->access_flags().is_private() ) { + // super class hierarchy does not implement it or protection is different + return true; + } } } @@ -562,7 +672,7 @@ } // Scans current_interface_methods for miranda methods that do not -// already appear in new_mirandas and are also not defined-and-non-private +// already appear in new_mirandas, or default methods, and are also not defined-and-non-private // in super (superclass). These mirandas are added to all_mirandas if it is // not null; in addition, those that are not duplicates of miranda methods // inherited by super from its interfaces are added to new_mirandas. @@ -572,7 +682,8 @@ void klassVtable::add_new_mirandas_to_lists( GrowableArray<Method*>* new_mirandas, GrowableArray<Method*>* all_mirandas, Array<Method*>* current_interface_methods, Array<Method*>* class_methods, - Klass* super) { + Array<Method*>* default_methods, Klass* super) { + // iterate thru the current interface's method to see if it a miranda int num_methods = current_interface_methods->length(); for (int i = 0; i < num_methods; i++) { @@ -590,7 +701,7 @@ } if (!is_duplicate) { // we don't want duplicate miranda entries in the vtable - if (is_miranda(im, class_methods, super)) { // is it a miranda at all? + if (is_miranda(im, class_methods, default_methods, super)) { // is it a miranda at all? InstanceKlass *sk = InstanceKlass::cast(super); // check if it is a duplicate of a super's miranda if (sk->lookup_method_in_all_interfaces(im->name(), im->signature()) == NULL) { @@ -607,6 +718,7 @@ void klassVtable::get_mirandas(GrowableArray<Method*>* new_mirandas, GrowableArray<Method*>* all_mirandas, Klass* super, Array<Method*>* class_methods, + Array<Method*>* default_methods, Array<Klass*>* local_interfaces) { assert((new_mirandas->length() == 0) , "current mirandas must be 0"); @@ -615,14 +727,16 @@ for (int i = 0; i < num_local_ifs; i++) { InstanceKlass *ik = InstanceKlass::cast(local_interfaces->at(i)); add_new_mirandas_to_lists(new_mirandas, all_mirandas, - ik->methods(), class_methods, super); + ik->methods(), class_methods, + default_methods, super); // iterate thru each local's super interfaces Array<Klass*>* super_ifs = ik->transitive_interfaces(); int num_super_ifs = super_ifs->length(); for (int j = 0; j < num_super_ifs; j++) { InstanceKlass *sik = InstanceKlass::cast(super_ifs->at(j)); add_new_mirandas_to_lists(new_mirandas, all_mirandas, - sik->methods(), class_methods, super); + sik->methods(), class_methods, + default_methods, super); } } } @@ -633,8 +747,22 @@ int klassVtable::fill_in_mirandas(int initialized) { GrowableArray<Method*> mirandas(20); get_mirandas(&mirandas, NULL, ik()->super(), ik()->methods(), - ik()->local_interfaces()); + ik()->default_methods(), ik()->local_interfaces()); for (int i = 0; i < mirandas.length(); i++) { + if (PrintVtables && Verbose) { + Method* meth = mirandas.at(i); + ResourceMark rm(Thread::current()); + if (meth != NULL) { + char* sig = meth->name_and_sig_as_C_string(); + tty->print("fill in mirandas with %s index %d, flags: ", + sig, initialized); + meth->access_flags().print_on(tty); + if (meth->is_default_method()) { + tty->print("default"); + } + tty->cr(); + } + } put_method_at(mirandas.at(i), initialized); ++initialized; } @@ -648,6 +776,26 @@ } #if INCLUDE_JVMTI +bool klassVtable::adjust_default_method(int vtable_index, Method* old_method, Method* new_method) { + // If old_method is default, find this vtable index in default_vtable_indices + // and replace that method in the _default_methods list + bool updated = false; + + Array<Method*>* default_methods = ik()->default_methods(); + if (default_methods != NULL) { + int len = default_methods->length(); + for (int idx = 0; idx < len; idx++) { + if (vtable_index == ik()->default_vtable_indices()->at(idx)) { + if (default_methods->at(idx) == old_method) { + default_methods->at_put(idx, new_method); + updated = true; + } + break; + } + } + } + return updated; +} void klassVtable::adjust_method_entries(Method** old_methods, Method** new_methods, int methods_length, bool * trace_name_printed) { // search the vtable for uses of either obsolete or EMCP methods @@ -663,18 +811,26 @@ for (int index = 0; index < length(); index++) { if (unchecked_method_at(index) == old_method) { put_method_at(new_method, index); + // For default methods, need to update the _default_methods array + // which can only have one method entry for a given signature + bool updated_default = false; + if (old_method->is_default_method()) { + updated_default = adjust_default_method(index, old_method, new_method); + } if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) { if (!(*trace_name_printed)) { // RC_TRACE_MESG macro has an embedded ResourceMark - RC_TRACE_MESG(("adjust: name=%s", + RC_TRACE_MESG(("adjust: klassname=%s for methods from name=%s", + klass()->external_name(), old_method->method_holder()->external_name())); *trace_name_printed = true; } // RC_TRACE macro has an embedded ResourceMark - RC_TRACE(0x00100000, ("vtable method update: %s(%s)", + RC_TRACE(0x00100000, ("vtable method update: %s(%s), updated default = %s", new_method->name()->as_C_string(), - new_method->signature()->as_C_string())); + new_method->signature()->as_C_string(), + updated_default ? "true" : "false")); } // cannot 'break' here; see for-loop comment above. } @@ -701,6 +857,12 @@ if (m != NULL) { tty->print(" (%5d) ", i); m->access_flags().print_on(tty); + if (m->is_default_method()) { + tty->print("default"); + } + if (m->is_overpass()) { + tty->print("overpass"); + } tty->print(" -- "); m->print_name(tty); tty->cr(); @@ -757,9 +919,9 @@ // Initialization void klassItable::initialize_itable(bool checkconstraints, TRAPS) { if (_klass->is_interface()) { - // This needs to go after vtable indexes are assigned but - // before implementors need to know the number of itable indexes. - assign_itable_indexes_for_interface(_klass()); + // This needs to go after vtable indices are assigned but + // before implementors need to know the number of itable indices. + assign_itable_indices_for_interface(_klass()); } // Cannot be setup doing bootstrapping, interfaces don't have @@ -803,7 +965,7 @@ return true; } -int klassItable::assign_itable_indexes_for_interface(Klass* klass) { +int klassItable::assign_itable_indices_for_interface(Klass* klass) { // an interface does not have an itable, but its methods need to be numbered if (TraceItables) tty->print_cr("%3d: Initializing itable for interface %s", ++initialize_count, klass->name()->as_C_string()); @@ -846,7 +1008,7 @@ } nof_methods -= 1; } - // no methods have itable indexes + // no methods have itable indices return 0; } @@ -907,6 +1069,21 @@ int ime_num = m->itable_index(); assert(ime_num < ime_count, "oob"); itableOffsetEntry::method_entry(_klass(), method_table_offset)[ime_num].initialize(target()); + if (TraceItables && Verbose) { + ResourceMark rm(THREAD); + if (target() != NULL) { + char* sig = target()->name_and_sig_as_C_string(); + tty->print("interface: %s, ime_num: %d, target: %s, method_holder: %s ", + interf_h()->internal_name(), ime_num, sig, + target()->method_holder()->internal_name()); + tty->print("target_method flags: "); + target()->access_flags().print_on(tty); + if (target()->is_default_method()) { + tty->print("default"); + } + tty->cr(); + } + } } } } @@ -980,6 +1157,9 @@ if (m != NULL) { tty->print(" (%5d) ", i); m->access_flags().print_on(tty); + if (m->is_default_method()) { + tty->print("default"); + } tty->print(" -- "); m->print_name(tty); tty->cr(); @@ -1116,7 +1296,7 @@ Array<Method*>* methods = InstanceKlass::cast(intf)->methods(); if (itable_index < 0 || itable_index >= method_count_for_interface(intf)) - return NULL; // help caller defend against bad indexes + return NULL; // help caller defend against bad indices int index = itable_index; Method* m = methods->at(index);
--- a/src/share/vm/oops/klassVtable.hpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/oops/klassVtable.hpp Wed Oct 09 22:01:59 2013 -0400 @@ -97,6 +97,7 @@ // trace_name_printed is set to true if the current call has // printed the klass name so that other routines in the adjust_* // group don't print the klass name. + bool adjust_default_method(int vtable_index, Method* old_method, Method* new_method); void adjust_method_entries(Method** old_methods, Method** new_methods, int methods_length, bool * trace_name_printed); bool check_no_old_or_obsolete_entries(); @@ -118,24 +119,28 @@ void put_method_at(Method* m, int index); static bool needs_new_vtable_entry(methodHandle m, Klass* super, Handle classloader, Symbol* classname, AccessFlags access_flags, TRAPS); - bool update_inherited_vtable(InstanceKlass* klass, methodHandle target_method, int super_vtable_len, bool checkconstraints, TRAPS); + bool update_inherited_vtable(InstanceKlass* klass, methodHandle target_method, int super_vtable_len, int default_index, bool checkconstraints, TRAPS); InstanceKlass* find_transitive_override(InstanceKlass* initialsuper, methodHandle target_method, int vtable_index, Handle target_loader, Symbol* target_classname, Thread* THREAD); // support for miranda methods bool is_miranda_entry_at(int i); int fill_in_mirandas(int initialized); - static bool is_miranda(Method* m, Array<Method*>* class_methods, Klass* super); + static bool is_miranda(Method* m, Array<Method*>* class_methods, + Array<Method*>* default_methods, Klass* super); static void add_new_mirandas_to_lists( GrowableArray<Method*>* new_mirandas, GrowableArray<Method*>* all_mirandas, - Array<Method*>* current_interface_methods, Array<Method*>* class_methods, + Array<Method*>* current_interface_methods, + Array<Method*>* class_methods, + Array<Method*>* default_methods, Klass* super); static void get_mirandas( GrowableArray<Method*>* new_mirandas, GrowableArray<Method*>* all_mirandas, Klass* super, - Array<Method*>* class_methods, Array<Klass*>* local_interfaces); - + Array<Method*>* class_methods, + Array<Method*>* default_methods, + Array<Klass*>* local_interfaces); void verify_against(outputStream* st, klassVtable* vt, int index); inline InstanceKlass* ik() const; }; @@ -290,7 +295,7 @@ #endif // INCLUDE_JVMTI // Setup of itable - static int assign_itable_indexes_for_interface(Klass* klass); + static int assign_itable_indices_for_interface(Klass* klass); static int method_count_for_interface(Klass* klass); static int compute_itable_size(Array<Klass*>* transitive_interfaces); static void setup_itable_offset_table(instanceKlassHandle klass);
--- a/src/share/vm/oops/method.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/oops/method.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -511,9 +511,9 @@ bool Method::is_final_method(AccessFlags class_access_flags) const { // or "does_not_require_vtable_entry" - // overpass can occur, is not final (reuses vtable entry) + // default method or overpass can occur, is not final (reuses vtable entry) // private methods get vtable entries for backward class compatibility. - if (is_overpass()) return false; + if (is_overpass() || is_default_method()) return false; return is_final() || class_access_flags.is_final(); } @@ -521,11 +521,24 @@ return is_final_method(method_holder()->access_flags()); } +bool Method::is_default_method() const { + if (method_holder() != NULL && + method_holder()->is_interface() && + !is_abstract()) { + return true; + } else { + return false; + } +} + bool Method::can_be_statically_bound(AccessFlags class_access_flags) const { if (is_final_method(class_access_flags)) return true; #ifdef ASSERT + ResourceMark rm; bool is_nonv = (vtable_index() == nonvirtual_vtable_index); - if (class_access_flags.is_interface()) assert(is_nonv == is_static(), err_msg("is_nonv=%s", is_nonv)); + if (class_access_flags.is_interface()) { + assert(is_nonv == is_static(), err_msg("is_nonv=%s", name_and_sig_as_C_string())); + } #endif assert(valid_vtable_index() || valid_itable_index(), "method must be linked before we ask this question"); return vtable_index() == nonvirtual_vtable_index; @@ -1371,7 +1384,8 @@ } // This is only done during class loading, so it is OK to assume method_idnum matches the methods() array -void Method::sort_methods(Array<Method*>* methods, bool idempotent) { +// default_methods also uses this without the ordering for fast find_method +void Method::sort_methods(Array<Method*>* methods, bool idempotent, bool set_idnums) { int length = methods->length(); if (length > 1) { { @@ -1379,14 +1393,15 @@ QuickSort::sort<Method*>(methods->data(), length, method_comparator, idempotent); } // Reset method ordering - for (int i = 0; i < length; i++) { - Method* m = methods->at(i); - m->set_method_idnum(i); + if (set_idnums) { + for (int i = 0; i < length; i++) { + Method* m = methods->at(i); + m->set_method_idnum(i); + } } } } - //----------------------------------------------------------------------------------- // Non-product code unless JVM/TI needs it
--- a/src/share/vm/oops/method.hpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/oops/method.hpp Wed Oct 09 22:01:59 2013 -0400 @@ -567,6 +567,7 @@ // checks method and its method holder bool is_final_method() const; bool is_final_method(AccessFlags class_access_flags) const; + bool is_default_method() const; // true if method needs no dynamic dispatch (final and/or no vtable entry) bool can_be_statically_bound() const; @@ -846,7 +847,7 @@ #endif // Helper routine used for method sorting - static void sort_methods(Array<Method*>* methods, bool idempotent = false); + static void sort_methods(Array<Method*>* methods, bool idempotent = false, bool set_idnums = true); // Deallocation function for redefine classes or if an error occurs void deallocate_contents(ClassLoaderData* loader_data);
--- a/src/share/vm/prims/jni.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/prims/jni.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -1591,10 +1591,8 @@ } } else { m = klass->lookup_method(name, signature); - // Look up interfaces - if (m == NULL && klass->oop_is_instance()) { - m = InstanceKlass::cast(klass())->lookup_method_in_all_interfaces(name, - signature); + if (m == NULL && klass->oop_is_instance()) { + m = InstanceKlass::cast(klass())->lookup_method_in_ordered_interfaces(name, signature); } } if (m == NULL || (m->is_static() != is_static)) {
--- a/src/share/vm/prims/jvm.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/prims/jvm.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -668,13 +668,12 @@ JVM_ENTRY(jclass, JVM_GetCallerClass(JNIEnv* env, int depth)) JVMWrapper("JVM_GetCallerClass"); - // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation. - if (SystemDictionary::reflect_CallerSensitive_klass() == NULL) { + // Pre-JDK 8 and early builds of JDK 8 don't have a CallerSensitive annotation; or + // sun.reflect.Reflection.getCallerClass with a depth parameter is provided + // temporarily for existing code to use until a replacement API is defined. + if (SystemDictionary::reflect_CallerSensitive_klass() == NULL || depth != JVM_CALLER_DEPTH) { Klass* k = thread->security_get_caller_class(depth); return (k == NULL) ? NULL : (jclass) JNIHandles::make_local(env, k->java_mirror()); - } else { - // Basic handshaking with Java_sun_reflect_Reflection_getCallerClass - assert(depth == -1, "wrong handshake depth"); } // Getting the class of the caller frame.
--- a/src/share/vm/prims/jvm.h Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/prims/jvm.h Wed Oct 09 22:01:59 2013 -0400 @@ -374,6 +374,9 @@ /* * java.lang.Class and java.lang.ClassLoader */ + +#define JVM_CALLER_DEPTH -1 + /* * Returns the class in which the code invoking the native method * belongs.
--- a/src/share/vm/prims/jvmtiRedefineClasses.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/prims/jvmtiRedefineClasses.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -2755,13 +2755,26 @@ // InstanceKlass around to hold obsolete methods so we don't have // any other InstanceKlass embedded vtables to update. The vtable // holds the Method*s for virtual (but not final) methods. - if (ik->vtable_length() > 0 && ik->is_subtype_of(_the_class_oop)) { + // Default methods, or concrete methods in interfaces are stored + // in the vtable, so if an interface changes we need to check + // adjust_method_entries() for every InstanceKlass, which will also + // adjust the default method vtable indices. + // We also need to adjust any default method entries that are + // not yet in the vtable, because the vtable setup is in progress. + // This must be done after we adjust the default_methods and + // default_vtable_indices for methods already in the vtable. + if (ik->vtable_length() > 0 && (_the_class_oop->is_interface() + || ik->is_subtype_of(_the_class_oop))) { // ik->vtable() creates a wrapper object; rm cleans it up ResourceMark rm(_thread); ik->vtable()->adjust_method_entries(_matching_old_methods, _matching_new_methods, _matching_methods_length, &trace_name_printed); + ik->adjust_default_methods(_matching_old_methods, + _matching_new_methods, + _matching_methods_length, + &trace_name_printed); } // If the current class has an itable and we are either redefining an
--- a/src/share/vm/prims/methodHandles.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/prims/methodHandles.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -187,12 +187,34 @@ receiver_limit = m->method_holder(); assert(receiver_limit->verify_itable_index(vmindex), ""); flags |= IS_METHOD | (JVM_REF_invokeInterface << REFERENCE_KIND_SHIFT); + if (TraceInvokeDynamic) { + ResourceMark rm; + tty->print_cr("memberName: invokeinterface method_holder::method: %s, receiver: %s, itableindex: %d, access_flags:", + Method::name_and_sig_as_C_string(receiver_limit(), m->name(), m->signature()), + receiver_limit()->internal_name(), vmindex); + m->access_flags().print_on(tty); + if (!m->is_abstract()) { + tty->print("default"); + } + tty->cr(); + } break; case CallInfo::vtable_call: vmindex = info.vtable_index(); flags |= IS_METHOD | (JVM_REF_invokeVirtual << REFERENCE_KIND_SHIFT); assert(receiver_limit->is_subtype_of(m->method_holder()), "virtual call must be type-safe"); + if (TraceInvokeDynamic) { + ResourceMark rm; + tty->print_cr("memberName: invokevirtual method_holder::method: %s, receiver: %s, vtableindex: %d, access_flags:", + Method::name_and_sig_as_C_string(receiver_limit(), m->name(), m->signature()), + receiver_limit()->internal_name(), vmindex); + m->access_flags().print_on(tty); + if (m->is_default_method()) { + tty->print("default"); + } + tty->cr(); + } break; case CallInfo::direct_call:
--- a/src/share/vm/runtime/arguments.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/runtime/arguments.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -2045,6 +2045,9 @@ status = status && verify_interval(StringTableSize, minimumStringTableSize, (max_uintx / StringTable::bucket_size()), "StringTable size"); + status = status && verify_interval(SymbolTableSize, minimumSymbolTableSize, + (max_uintx / SymbolTable::bucket_size()), "SymbolTable size"); + if (MinHeapFreeRatio > MaxHeapFreeRatio) { jio_fprintf(defaultStream::error_stream(), "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or "
--- a/src/share/vm/runtime/globals.hpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/runtime/globals.hpp Wed Oct 09 22:01:59 2013 -0400 @@ -3727,6 +3727,9 @@ product(uintx, StringTableSize, defaultStringTableSize, \ "Number of buckets in the interned String table") \ \ + experimental(uintx, SymbolTableSize, defaultSymbolTableSize, \ + "Number of buckets in the JVM internal Symbol table") \ + \ develop(bool, TraceDefaultMethods, false, \ "Trace the default method processing steps") \ \
--- a/src/share/vm/runtime/reflectionUtils.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/runtime/reflectionUtils.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -1,5 +1,5 @@ /* - * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 1999, 2013, 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 @@ -27,8 +27,11 @@ #include "memory/universe.inline.hpp" #include "runtime/reflectionUtils.hpp" -KlassStream::KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only) { - _klass = klass; +KlassStream::KlassStream(instanceKlassHandle klass, bool local_only, + bool classes_only, bool walk_defaults) { + _klass = _base_klass = klass; + _base_class_search_defaults = false; + _defaults_checked = false; if (classes_only) { _interfaces = Universe::the_empty_klass_array(); } else { @@ -37,6 +40,7 @@ _interface_index = _interfaces->length(); _local_only = local_only; _classes_only = classes_only; + _walk_defaults = walk_defaults; } bool KlassStream::eos() { @@ -45,7 +49,13 @@ if (!_klass->is_interface() && _klass->super() != NULL) { // go up superclass chain (not for interfaces) _klass = _klass->super(); + // Next for method walks, walk default methods + } else if (_walk_defaults && (_defaults_checked == false) && (_base_klass->default_methods() != NULL)) { + _base_class_search_defaults = true; + _klass = _base_klass; + _defaults_checked = true; } else { + // Next walk transitive interfaces if (_interface_index > 0) { _klass = _interfaces->at(--_interface_index); } else {
--- a/src/share/vm/runtime/reflectionUtils.hpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/runtime/reflectionUtils.hpp Wed Oct 09 22:01:59 2013 -0400 @@ -38,7 +38,7 @@ // and (super)interfaces. Streaming is done in reverse order (subclasses first, // interfaces last). // -// for (KlassStream st(k, false, false); !st.eos(); st.next()) { +// for (KlassStream st(k, false, false, false); !st.eos(); st.next()) { // Klass* k = st.klass(); // ... // } @@ -46,17 +46,21 @@ class KlassStream VALUE_OBJ_CLASS_SPEC { protected: instanceKlassHandle _klass; // current klass/interface iterated over - Array<Klass*>* _interfaces; // transitive interfaces for initial class + instanceKlassHandle _base_klass; // initial klass/interface to iterate over + Array<Klass*>* _interfaces; // transitive interfaces for initial class int _interface_index; // current interface being processed bool _local_only; // process initial class/interface only bool _classes_only; // process classes only (no interfaces) + bool _walk_defaults; // process default methods + bool _base_class_search_defaults; // time to process default methods + bool _defaults_checked; // already checked for default methods int _index; - virtual int length() const = 0; + virtual int length() = 0; public: // constructor - KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only); + KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only, bool walk_defaults); // testing bool eos(); @@ -67,6 +71,8 @@ // accessors instanceKlassHandle klass() const { return _klass; } int index() const { return _index; } + bool base_class_search_defaults() const { return _base_class_search_defaults; } + void base_class_search_defaults(bool b) { _base_class_search_defaults = b; } }; @@ -81,17 +87,24 @@ class MethodStream : public KlassStream { private: - int length() const { return methods()->length(); } - Array<Method*>* methods() const { return _klass->methods(); } + int length() { return methods()->length(); } + Array<Method*>* methods() { + if (base_class_search_defaults()) { + base_class_search_defaults(false); + return _klass->default_methods(); + } else { + return _klass->methods(); + } + } public: MethodStream(instanceKlassHandle klass, bool local_only, bool classes_only) - : KlassStream(klass, local_only, classes_only) { + : KlassStream(klass, local_only, classes_only, true) { _index = length(); next(); } void next() { _index--; } - Method* method() const { return methods()->at(index()); } + Method* method() { return methods()->at(index()); } }; @@ -107,13 +120,13 @@ class FieldStream : public KlassStream { private: - int length() const { return _klass->java_fields_count(); } + int length() { return _klass->java_fields_count(); } fieldDescriptor _fd_buf; public: FieldStream(instanceKlassHandle klass, bool local_only, bool classes_only) - : KlassStream(klass, local_only, classes_only) { + : KlassStream(klass, local_only, classes_only, false) { _index = length(); next(); }
--- a/src/share/vm/runtime/vmStructs.cpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/runtime/vmStructs.cpp Wed Oct 09 22:01:59 2013 -0400 @@ -27,7 +27,6 @@ #include "classfile/javaClasses.hpp" #include "classfile/loaderConstraints.hpp" #include "classfile/placeholders.hpp" -#include "classfile/symbolTable.hpp" #include "classfile/systemDictionary.hpp" #include "ci/ciField.hpp" #include "ci/ciInstance.hpp" @@ -289,6 +288,7 @@ nonstatic_field(ConstantPoolCache, _constant_pool, ConstantPool*) \ nonstatic_field(InstanceKlass, _array_klasses, Klass*) \ nonstatic_field(InstanceKlass, _methods, Array<Method*>*) \ + nonstatic_field(InstanceKlass, _default_methods, Array<Method*>*) \ nonstatic_field(InstanceKlass, _local_interfaces, Array<Klass*>*) \ nonstatic_field(InstanceKlass, _transitive_interfaces, Array<Klass*>*) \ nonstatic_field(InstanceKlass, _fields, Array<u2>*) \ @@ -323,6 +323,7 @@ nonstatic_field(nmethodBucket, _count, int) \ nonstatic_field(nmethodBucket, _next, nmethodBucket*) \ nonstatic_field(InstanceKlass, _method_ordering, Array<int>*) \ + nonstatic_field(InstanceKlass, _default_vtable_indices, Array<int>*) \ nonstatic_field(Klass, _super_check_offset, juint) \ nonstatic_field(Klass, _secondary_super_cache, Klass*) \ nonstatic_field(Klass, _secondary_supers, Array<Klass*>*) \ @@ -2247,12 +2248,6 @@ declare_preprocessor_constant("PERFDATA_BIG_ENDIAN", PERFDATA_BIG_ENDIAN) \ declare_preprocessor_constant("PERFDATA_LITTLE_ENDIAN", PERFDATA_LITTLE_ENDIAN) \ \ - /***************/ \ - /* SymbolTable */ \ - /***************/ \ - \ - declare_constant(SymbolTable::symbol_table_size) \ - \ /***********************************/ \ /* LoaderConstraintTable constants */ \ /***********************************/ \
--- a/src/share/vm/utilities/globalDefinitions.hpp Wed Oct 09 21:45:28 2013 -0400 +++ b/src/share/vm/utilities/globalDefinitions.hpp Wed Oct 09 22:01:59 2013 -0400 @@ -333,6 +333,9 @@ const int defaultStringTableSize = NOT_LP64(1009) LP64_ONLY(60013); const int minimumStringTableSize=1009; +const int defaultSymbolTableSize = 20011; +const int minimumSymbolTableSize = 1009; + //---------------------------------------------------------------------------------------------------- // HotSwap - for JVMTI aka Class File Replacement and PopFrame