Mercurial > hg > graal-jvmci-8
view src/share/vm/memory/genMarkSweep.hpp @ 2226:c5a923563727
6912621: iCMS: Error: assert(_markBitMap.isMarked(addr + 1),"Missing Printezis bit?")
Summary: Fix block_size_if_printezis_bits() so it does not expect the bits, only uses them when available. Fix block_size_no_stall() so it does not stall when the bits are missing such cases, letting the caller deal with zero size returns. Constant pool cache oops do not need to be unparsable or conc_unsafe after their klass pointer is installed. Some cosmetic clean-ups and some assertion checking for conc-usafety which, in the presence of class file redefinition, has no a-priori time boundedness, so all GCs must be able to safely deal with putatively conc-unsafe objects in a stop-world pause.
Reviewed-by: jmasa, johnc
author | ysr |
---|---|
date | Mon, 07 Feb 2011 22:19:57 -0800 |
parents | f95d63e2154a |
children |
line wrap: on
line source
/* * Copyright (c) 2001, 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. * */ #ifndef SHARE_VM_MEMORY_GENMARKSWEEP_HPP #define SHARE_VM_MEMORY_GENMARKSWEEP_HPP #include "gc_implementation/shared/markSweep.hpp" class GenMarkSweep : public MarkSweep { friend class VM_MarkSweep; friend class G1MarkSweep; public: static void invoke_at_safepoint(int level, ReferenceProcessor* rp, bool clear_all_softrefs); private: // Mark live objects static void mark_sweep_phase1(int level, bool clear_all_softrefs); // Calculate new addresses static void mark_sweep_phase2(); // Update pointers static void mark_sweep_phase3(int level); // Move objects to new positions static void mark_sweep_phase4(); // Temporary data structures for traversal and storing/restoring marks static void allocate_stacks(); static void deallocate_stacks(); }; #endif // SHARE_VM_MEMORY_GENMARKSWEEP_HPP