Mercurial > hg > graal-compiler
view src/share/vm/oops/constMethodKlass.cpp @ 2149:7e37af9d69ef
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
author | tonyp |
---|---|
date | Wed, 19 Jan 2011 09:35:17 -0500 |
parents | f95d63e2154a |
children | e5383553fd4e |
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/* * Copyright (c) 2003, 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 "gc_implementation/shared/markSweep.inline.hpp" #include "interpreter/interpreter.hpp" #include "memory/gcLocker.hpp" #include "memory/resourceArea.hpp" #include "oops/constMethodKlass.hpp" #include "oops/constMethodOop.hpp" #include "oops/oop.inline.hpp" #include "oops/oop.inline2.hpp" #include "runtime/handles.inline.hpp" klassOop constMethodKlass::create_klass(TRAPS) { constMethodKlass 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 constMethodKlass::oop_size(oop obj) const { assert(obj->is_constMethod(), "must be constMethod oop"); return constMethodOop(obj)->object_size(); } bool constMethodKlass::oop_is_parsable(oop obj) const { assert(obj->is_constMethod(), "must be constMethod oop"); return constMethodOop(obj)->object_is_parsable(); } bool constMethodKlass::oop_is_conc_safe(oop obj) const { assert(obj->is_constMethod(), "must be constMethod oop"); return constMethodOop(obj)->is_conc_safe(); } constMethodOop constMethodKlass::allocate(int byte_code_size, int compressed_line_number_size, int localvariable_table_length, int checked_exceptions_length, bool is_conc_safe, TRAPS) { int size = constMethodOopDesc::object_size(byte_code_size, compressed_line_number_size, localvariable_table_length, checked_exceptions_length); KlassHandle h_k(THREAD, as_klassOop()); constMethodOop cm = (constMethodOop) CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL); assert(!cm->is_parsable(), "Not yet safely parsable"); No_Safepoint_Verifier no_safepoint; cm->set_interpreter_kind(Interpreter::invalid); cm->init_fingerprint(); cm->set_method(NULL); cm->set_stackmap_data(NULL); cm->set_exception_table(NULL); cm->set_code_size(byte_code_size); cm->set_constMethod_size(size); cm->set_inlined_tables_length(checked_exceptions_length, compressed_line_number_size, localvariable_table_length); assert(cm->size() == size, "wrong size for object"); cm->set_is_conc_safe(is_conc_safe); cm->set_partially_loaded(); assert(cm->is_parsable(), "Is safely parsable by gc"); return cm; } void constMethodKlass::oop_follow_contents(oop obj) { assert (obj->is_constMethod(), "object must be constMethod"); constMethodOop cm = constMethodOop(obj); MarkSweep::mark_and_push(cm->adr_method()); MarkSweep::mark_and_push(cm->adr_stackmap_data()); MarkSweep::mark_and_push(cm->adr_exception_table()); // Performance tweak: We skip iterating over the klass pointer since we // know that Universe::constMethodKlassObj never moves. } #ifndef SERIALGC void constMethodKlass::oop_follow_contents(ParCompactionManager* cm, oop obj) { assert (obj->is_constMethod(), "object must be constMethod"); constMethodOop cm_oop = constMethodOop(obj); PSParallelCompact::mark_and_push(cm, cm_oop->adr_method()); PSParallelCompact::mark_and_push(cm, cm_oop->adr_stackmap_data()); PSParallelCompact::mark_and_push(cm, cm_oop->adr_exception_table()); // Performance tweak: We skip iterating over the klass pointer since we // know that Universe::constMethodKlassObj never moves. } #endif // SERIALGC int constMethodKlass::oop_oop_iterate(oop obj, OopClosure* blk) { assert (obj->is_constMethod(), "object must be constMethod"); constMethodOop cm = constMethodOop(obj); blk->do_oop(cm->adr_method()); blk->do_oop(cm->adr_stackmap_data()); blk->do_oop(cm->adr_exception_table()); // Get size before changing pointers. // Don't call size() or oop_size() since that is a virtual call. int size = cm->object_size(); return size; } int constMethodKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { assert (obj->is_constMethod(), "object must be constMethod"); constMethodOop cm = constMethodOop(obj); oop* adr; adr = cm->adr_method(); if (mr.contains(adr)) blk->do_oop(adr); adr = cm->adr_stackmap_data(); if (mr.contains(adr)) blk->do_oop(adr); adr = cm->adr_exception_table(); if (mr.contains(adr)) blk->do_oop(adr); // Get size before changing pointers. // Don't call size() or oop_size() since that is a virtual call. int size = cm->object_size(); // Performance tweak: We skip iterating over the klass pointer since we // know that Universe::constMethodKlassObj never moves. return size; } int constMethodKlass::oop_adjust_pointers(oop obj) { assert(obj->is_constMethod(), "should be constMethod"); constMethodOop cm = constMethodOop(obj); MarkSweep::adjust_pointer(cm->adr_method()); MarkSweep::adjust_pointer(cm->adr_stackmap_data()); MarkSweep::adjust_pointer(cm->adr_exception_table()); // Get size before changing pointers. // Don't call size() or oop_size() since that is a virtual call. int size = cm->object_size(); // Performance tweak: We skip iterating over the klass pointer since we // know that Universe::constMethodKlassObj never moves. return size; } #ifndef SERIALGC void constMethodKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { assert(obj->is_constMethod(), "should be constMethod"); } int constMethodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { assert(obj->is_constMethod(), "should be constMethod"); constMethodOop cm_oop = constMethodOop(obj); #if 0 PSParallelCompact::adjust_pointer(cm_oop->adr_method()); PSParallelCompact::adjust_pointer(cm_oop->adr_exception_table()); PSParallelCompact::adjust_pointer(cm_oop->adr_stackmap_data()); #endif oop* const beg_oop = cm_oop->oop_block_beg(); oop* const end_oop = cm_oop->oop_block_end(); for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) { PSParallelCompact::adjust_pointer(cur_oop); } return cm_oop->object_size(); } int constMethodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, HeapWord* beg_addr, HeapWord* end_addr) { assert(obj->is_constMethod(), "should be constMethod"); constMethodOop cm_oop = constMethodOop(obj); oop* const beg_oop = MAX2((oop*)beg_addr, cm_oop->oop_block_beg()); oop* const end_oop = MIN2((oop*)end_addr, cm_oop->oop_block_end()); for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) { PSParallelCompact::adjust_pointer(cur_oop); } return cm_oop->object_size(); } #endif // SERIALGC // Printing void constMethodKlass::oop_print_on(oop obj, outputStream* st) { ResourceMark rm; assert(obj->is_constMethod(), "must be constMethod"); Klass::oop_print_on(obj, st); constMethodOop m = constMethodOop(obj); st->print(" - method: " INTPTR_FORMAT " ", (address)m->method()); m->method()->print_value_on(st); st->cr(); st->print(" - exceptions: " INTPTR_FORMAT "\n", (address)m->exception_table()); if (m->has_stackmap_table()) { st->print(" - stackmap data: "); m->stackmap_data()->print_value_on(st); st->cr(); } } // Short version of printing constMethodOop - just print the name of the // method it belongs to. void constMethodKlass::oop_print_value_on(oop obj, outputStream* st) { assert(obj->is_constMethod(), "must be constMethod"); constMethodOop m = constMethodOop(obj); st->print(" const part of method " ); m->method()->print_value_on(st); } const char* constMethodKlass::internal_name() const { return "{constMethod}"; } // Verification void constMethodKlass::oop_verify_on(oop obj, outputStream* st) { Klass::oop_verify_on(obj, st); guarantee(obj->is_constMethod(), "object must be constMethod"); constMethodOop m = constMethodOop(obj); guarantee(m->is_perm(), "should be in permspace"); // Verification can occur during oop construction before the method or // other fields have been initialized. if (!obj->partially_loaded()) { guarantee(m->method()->is_perm(), "should be in permspace"); guarantee(m->method()->is_method(), "should be method"); typeArrayOop stackmap_data = m->stackmap_data(); guarantee(stackmap_data == NULL || stackmap_data->is_perm(), "should be in permspace"); guarantee(m->exception_table()->is_perm(), "should be in permspace"); guarantee(m->exception_table()->is_typeArray(), "should be type array"); address m_end = (address)((oop*) m + m->size()); address compressed_table_start = m->code_end(); guarantee(compressed_table_start <= m_end, "invalid method layout"); address compressed_table_end = compressed_table_start; // Verify line number table if (m->has_linenumber_table()) { CompressedLineNumberReadStream stream(m->compressed_linenumber_table()); while (stream.read_pair()) { guarantee(stream.bci() >= 0 && stream.bci() <= m->code_size(), "invalid bci in line number table"); } compressed_table_end += stream.position(); } guarantee(compressed_table_end <= m_end, "invalid method layout"); // Verify checked exceptions and local variable tables if (m->has_checked_exceptions()) { u2* addr = m->checked_exceptions_length_addr(); guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout"); } if (m->has_localvariable_table()) { u2* addr = m->localvariable_table_length_addr(); guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout"); } // Check compressed_table_end relative to uncompressed_table_start u2* uncompressed_table_start; if (m->has_localvariable_table()) { uncompressed_table_start = (u2*) m->localvariable_table_start(); } else { if (m->has_checked_exceptions()) { uncompressed_table_start = (u2*) m->checked_exceptions_start(); } else { uncompressed_table_start = (u2*) m_end; } } int gap = (intptr_t) uncompressed_table_start - (intptr_t) compressed_table_end; int max_gap = align_object_size(1)*BytesPerWord; guarantee(gap >= 0 && gap < max_gap, "invalid method layout"); } } bool constMethodKlass::oop_partially_loaded(oop obj) const { assert(obj->is_constMethod(), "object must be klass"); constMethodOop m = constMethodOop(obj); // check whether exception_table points to self (flag for partially loaded) return m->exception_table() == (typeArrayOop)obj; } // The exception_table is the last field set when loading an object. void constMethodKlass::oop_set_partially_loaded(oop obj) { assert(obj->is_constMethod(), "object must be klass"); constMethodOop m = constMethodOop(obj); // Temporarily set exception_table to point to self m->set_exception_table((typeArrayOop)obj); }