| /* |
| * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "classfile/javaClasses.hpp" |
| #include "gc_implementation/shared/markSweep.inline.hpp" |
| #include "gc_interface/collectedHeap.inline.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "memory/gcLocker.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "memory/universe.inline.hpp" |
| #include "oops/constMethodKlass.hpp" |
| #include "oops/klassOop.hpp" |
| #include "oops/methodDataOop.hpp" |
| #include "oops/methodKlass.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "oops/oop.inline2.hpp" |
| #include "oops/symbol.hpp" |
| #include "runtime/handles.inline.hpp" |
| |
| klassOop methodKlass::create_klass(TRAPS) { |
| methodKlass o; |
| KlassHandle h_this_klass(THREAD, Universe::klassKlassObj()); |
| KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL); |
| // Make sure size calculation is right |
| assert(k()->size() == align_object_size(header_size()), "wrong size for object"); |
| java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror |
| return k(); |
| } |
| |
| |
| int methodKlass::oop_size(oop obj) const { |
| assert(obj->is_method(), "must be method oop"); |
| return methodOop(obj)->object_size(); |
| } |
| |
| |
| bool methodKlass::oop_is_parsable(oop obj) const { |
| assert(obj->is_method(), "must be method oop"); |
| return methodOop(obj)->object_is_parsable(); |
| } |
| |
| |
| methodOop methodKlass::allocate(constMethodHandle xconst, |
| AccessFlags access_flags, TRAPS) { |
| int size = methodOopDesc::object_size(access_flags.is_native()); |
| KlassHandle h_k(THREAD, as_klassOop()); |
| assert(xconst()->is_parsable(), "possible publication protocol violation"); |
| methodOop m = (methodOop)CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL); |
| assert(!m->is_parsable(), "not expecting parsability yet."); |
| |
| No_Safepoint_Verifier no_safepoint; // until m becomes parsable below |
| m->set_constMethod(xconst()); |
| m->set_access_flags(access_flags); |
| m->set_method_size(size); |
| m->set_name_index(0); |
| m->set_signature_index(0); |
| #ifdef CC_INTERP |
| m->set_result_index(T_VOID); |
| #endif |
| m->set_constants(NULL); |
| m->set_max_stack(0); |
| m->set_max_locals(0); |
| m->set_intrinsic_id(vmIntrinsics::_none); |
| m->set_method_data(NULL); |
| m->set_interpreter_throwout_count(0); |
| m->set_vtable_index(methodOopDesc::garbage_vtable_index); |
| |
| // Fix and bury in methodOop |
| m->set_interpreter_entry(NULL); // sets i2i entry and from_int |
| m->set_adapter_entry(NULL); |
| m->clear_code(); // from_c/from_i get set to c2i/i2i |
| |
| if (access_flags.is_native()) { |
| m->clear_native_function(); |
| m->set_signature_handler(NULL); |
| } |
| |
| NOT_PRODUCT(m->set_compiled_invocation_count(0);) |
| m->set_interpreter_invocation_count(0); |
| m->invocation_counter()->init(); |
| m->backedge_counter()->init(); |
| m->clear_number_of_breakpoints(); |
| |
| assert(m->is_parsable(), "must be parsable here."); |
| assert(m->size() == size, "wrong size for object"); |
| // We should not publish an uprasable object's reference |
| // into one that is parsable, since that presents problems |
| // for the concurrent parallel marking and precleaning phases |
| // of concurrent gc (CMS). |
| xconst->set_method(m); |
| return m; |
| } |
| |
| |
| void methodKlass::oop_follow_contents(oop obj) { |
| assert (obj->is_method(), "object must be method"); |
| methodOop m = methodOop(obj); |
| // Performance tweak: We skip iterating over the klass pointer since we |
| // know that Universe::methodKlassObj never moves. |
| MarkSweep::mark_and_push(m->adr_constMethod()); |
| MarkSweep::mark_and_push(m->adr_constants()); |
| if (m->method_data() != NULL) { |
| MarkSweep::mark_and_push(m->adr_method_data()); |
| } |
| } |
| |
| #ifndef SERIALGC |
| void methodKlass::oop_follow_contents(ParCompactionManager* cm, |
| oop obj) { |
| assert (obj->is_method(), "object must be method"); |
| methodOop m = methodOop(obj); |
| // Performance tweak: We skip iterating over the klass pointer since we |
| // know that Universe::methodKlassObj never moves. |
| PSParallelCompact::mark_and_push(cm, m->adr_constMethod()); |
| PSParallelCompact::mark_and_push(cm, m->adr_constants()); |
| #ifdef COMPILER2 |
| if (m->method_data() != NULL) { |
| PSParallelCompact::mark_and_push(cm, m->adr_method_data()); |
| } |
| #endif // COMPILER2 |
| } |
| #endif // SERIALGC |
| |
| int methodKlass::oop_oop_iterate(oop obj, OopClosure* blk) { |
| assert (obj->is_method(), "object must be method"); |
| methodOop m = methodOop(obj); |
| // Get size before changing pointers. |
| // Don't call size() or oop_size() since that is a virtual call. |
| int size = m->object_size(); |
| // Performance tweak: We skip iterating over the klass pointer since we |
| // know that Universe::methodKlassObj never moves |
| blk->do_oop(m->adr_constMethod()); |
| blk->do_oop(m->adr_constants()); |
| if (m->method_data() != NULL) { |
| blk->do_oop(m->adr_method_data()); |
| } |
| return size; |
| } |
| |
| |
| int methodKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { |
| assert (obj->is_method(), "object must be method"); |
| methodOop m = methodOop(obj); |
| // Get size before changing pointers. |
| // Don't call size() or oop_size() since that is a virtual call. |
| int size = m->object_size(); |
| // Performance tweak: We skip iterating over the klass pointer since we |
| // know that Universe::methodKlassObj never moves. |
| oop* adr; |
| adr = m->adr_constMethod(); |
| if (mr.contains(adr)) blk->do_oop(adr); |
| adr = m->adr_constants(); |
| if (mr.contains(adr)) blk->do_oop(adr); |
| if (m->method_data() != NULL) { |
| adr = m->adr_method_data(); |
| if (mr.contains(adr)) blk->do_oop(adr); |
| } |
| return size; |
| } |
| |
| |
| int methodKlass::oop_adjust_pointers(oop obj) { |
| assert(obj->is_method(), "should be method"); |
| methodOop m = methodOop(obj); |
| // Get size before changing pointers. |
| // Don't call size() or oop_size() since that is a virtual call. |
| int size = m->object_size(); |
| // Performance tweak: We skip iterating over the klass pointer since we |
| // know that Universe::methodKlassObj never moves. |
| MarkSweep::adjust_pointer(m->adr_constMethod()); |
| MarkSweep::adjust_pointer(m->adr_constants()); |
| if (m->method_data() != NULL) { |
| MarkSweep::adjust_pointer(m->adr_method_data()); |
| } |
| return size; |
| } |
| |
| #ifndef SERIALGC |
| void methodKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
| assert(obj->is_method(), "should be method"); |
| } |
| |
| int methodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
| assert(obj->is_method(), "should be method"); |
| methodOop m = methodOop(obj); |
| PSParallelCompact::adjust_pointer(m->adr_constMethod()); |
| PSParallelCompact::adjust_pointer(m->adr_constants()); |
| #ifdef COMPILER2 |
| if (m->method_data() != NULL) { |
| PSParallelCompact::adjust_pointer(m->adr_method_data()); |
| } |
| #endif // COMPILER2 |
| return m->object_size(); |
| } |
| |
| int methodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, |
| HeapWord* beg_addr, HeapWord* end_addr) { |
| assert(obj->is_method(), "should be method"); |
| |
| oop* p; |
| methodOop m = methodOop(obj); |
| |
| p = m->adr_constMethod(); |
| PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); |
| p = m->adr_constants(); |
| PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); |
| |
| #ifdef COMPILER2 |
| if (m->method_data() != NULL) { |
| p = m->adr_method_data(); |
| PSParallelCompact::adjust_pointer(p, beg_addr, end_addr); |
| } |
| #endif // COMPILER2 |
| return m->object_size(); |
| } |
| #endif // SERIALGC |
| |
| #ifndef PRODUCT |
| |
| // Printing |
| |
| void methodKlass::oop_print_on(oop obj, outputStream* st) { |
| ResourceMark rm; |
| assert(obj->is_method(), "must be method"); |
| Klass::oop_print_on(obj, st); |
| methodOop m = methodOop(obj); |
| // get the effect of PrintOopAddress, always, for methods: |
| st->print_cr(" - this oop: "INTPTR_FORMAT, (intptr_t)m); |
| st->print (" - method holder: "); m->method_holder()->print_value_on(st); st->cr(); |
| st->print (" - constants: "INTPTR_FORMAT" ", (address)m->constants()); |
| m->constants()->print_value_on(st); st->cr(); |
| st->print (" - access: 0x%x ", m->access_flags().as_int()); m->access_flags().print_on(st); st->cr(); |
| st->print (" - name: "); m->name()->print_value_on(st); st->cr(); |
| st->print (" - signature: "); m->signature()->print_value_on(st); st->cr(); |
| st->print_cr(" - max stack: %d", m->max_stack()); |
| st->print_cr(" - max locals: %d", m->max_locals()); |
| st->print_cr(" - size of params: %d", m->size_of_parameters()); |
| st->print_cr(" - method size: %d", m->method_size()); |
| if (m->intrinsic_id() != vmIntrinsics::_none) |
| st->print_cr(" - intrinsic id: %d %s", m->intrinsic_id(), vmIntrinsics::name_at(m->intrinsic_id())); |
| if (m->highest_comp_level() != CompLevel_none) |
| st->print_cr(" - highest level: %d", m->highest_comp_level()); |
| st->print_cr(" - vtable index: %d", m->_vtable_index); |
| st->print_cr(" - i2i entry: " INTPTR_FORMAT, m->interpreter_entry()); |
| st->print_cr(" - adapter: " INTPTR_FORMAT, m->adapter()); |
| st->print_cr(" - compiled entry " INTPTR_FORMAT, m->from_compiled_entry()); |
| st->print_cr(" - code size: %d", m->code_size()); |
| if (m->code_size() != 0) { |
| st->print_cr(" - code start: " INTPTR_FORMAT, m->code_base()); |
| st->print_cr(" - code end (excl): " INTPTR_FORMAT, m->code_base() + m->code_size()); |
| } |
| if (m->method_data() != NULL) { |
| st->print_cr(" - method data: " INTPTR_FORMAT, (address)m->method_data()); |
| } |
| st->print_cr(" - checked ex length: %d", m->checked_exceptions_length()); |
| if (m->checked_exceptions_length() > 0) { |
| CheckedExceptionElement* table = m->checked_exceptions_start(); |
| st->print_cr(" - checked ex start: " INTPTR_FORMAT, table); |
| if (Verbose) { |
| for (int i = 0; i < m->checked_exceptions_length(); i++) { |
| st->print_cr(" - throws %s", m->constants()->printable_name_at(table[i].class_cp_index)); |
| } |
| } |
| } |
| if (m->has_linenumber_table()) { |
| u_char* table = m->compressed_linenumber_table(); |
| st->print_cr(" - linenumber start: " INTPTR_FORMAT, table); |
| if (Verbose) { |
| CompressedLineNumberReadStream stream(table); |
| while (stream.read_pair()) { |
| st->print_cr(" - line %d: %d", stream.line(), stream.bci()); |
| } |
| } |
| } |
| st->print_cr(" - localvar length: %d", m->localvariable_table_length()); |
| if (m->localvariable_table_length() > 0) { |
| LocalVariableTableElement* table = m->localvariable_table_start(); |
| st->print_cr(" - localvar start: " INTPTR_FORMAT, table); |
| if (Verbose) { |
| for (int i = 0; i < m->localvariable_table_length(); i++) { |
| int bci = table[i].start_bci; |
| int len = table[i].length; |
| const char* name = m->constants()->printable_name_at(table[i].name_cp_index); |
| const char* desc = m->constants()->printable_name_at(table[i].descriptor_cp_index); |
| int slot = table[i].slot; |
| st->print_cr(" - %s %s bci=%d len=%d slot=%d", desc, name, bci, len, slot); |
| } |
| } |
| } |
| if (m->code() != NULL) { |
| st->print (" - compiled code: "); |
| m->code()->print_value_on(st); |
| st->cr(); |
| } |
| if (m->is_method_handle_invoke()) { |
| st->print_cr(" - invoke method type: " INTPTR_FORMAT, (address) m->method_handle_type()); |
| // m is classified as native, but it does not have an interesting |
| // native_function or signature handler |
| } else if (m->is_native()) { |
| st->print_cr(" - native function: " INTPTR_FORMAT, m->native_function()); |
| st->print_cr(" - signature handler: " INTPTR_FORMAT, m->signature_handler()); |
| } |
| } |
| |
| #endif //PRODUCT |
| |
| void methodKlass::oop_print_value_on(oop obj, outputStream* st) { |
| assert(obj->is_method(), "must be method"); |
| Klass::oop_print_value_on(obj, st); |
| methodOop m = methodOop(obj); |
| st->print(" "); |
| m->name()->print_value_on(st); |
| st->print(" "); |
| m->signature()->print_value_on(st); |
| st->print(" in "); |
| m->method_holder()->print_value_on(st); |
| if (WizardMode) st->print("[%d,%d]", m->size_of_parameters(), m->max_locals()); |
| if (WizardMode && m->code() != NULL) st->print(" ((nmethod*)%p)", m->code()); |
| } |
| |
| const char* methodKlass::internal_name() const { |
| return "{method}"; |
| } |
| |
| |
| // Verification |
| |
| void methodKlass::oop_verify_on(oop obj, outputStream* st) { |
| Klass::oop_verify_on(obj, st); |
| guarantee(obj->is_method(), "object must be method"); |
| if (!obj->partially_loaded()) { |
| methodOop m = methodOop(obj); |
| guarantee(m->is_perm(), "should be in permspace"); |
| guarantee(m->constants()->is_perm(), "should be in permspace"); |
| guarantee(m->constants()->is_constantPool(), "should be constant pool"); |
| guarantee(m->constMethod()->is_constMethod(), "should be constMethodOop"); |
| guarantee(m->constMethod()->is_perm(), "should be in permspace"); |
| methodDataOop method_data = m->method_data(); |
| guarantee(method_data == NULL || |
| method_data->is_perm(), "should be in permspace"); |
| guarantee(method_data == NULL || |
| method_data->is_methodData(), "should be method data"); |
| } |
| } |
| |
| bool methodKlass::oop_partially_loaded(oop obj) const { |
| assert(obj->is_method(), "object must be method"); |
| methodOop m = methodOop(obj); |
| constMethodOop xconst = m->constMethod(); |
| assert(xconst != NULL, "const method must be set"); |
| constMethodKlass* ck = constMethodKlass::cast(xconst->klass()); |
| return ck->oop_partially_loaded(xconst); |
| } |
| |
| |
| void methodKlass::oop_set_partially_loaded(oop obj) { |
| assert(obj->is_method(), "object must be method"); |
| methodOop m = methodOop(obj); |
| constMethodOop xconst = m->constMethod(); |
| assert(xconst != NULL, "const method must be set"); |
| constMethodKlass* ck = constMethodKlass::cast(xconst->klass()); |
| ck->oop_set_partially_loaded(xconst); |
| } |