author | jwilhelm |
Thu, 03 Oct 2013 21:36:29 +0200 | |
changeset 20398 | b206c580c45f |
parent 18025 | b7bcf7497f93 |
child 26839 | 021bfc544c6f |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1MARKSWEEP_HPP |
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#define SHARE_VM_GC_IMPLEMENTATION_G1_G1MARKSWEEP_HPP |
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#include "gc_implementation/g1/g1CollectedHeap.inline.hpp" |
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#include "gc_implementation/g1/heapRegion.hpp" |
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#include "memory/genMarkSweep.hpp" |
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#include "memory/generation.hpp" |
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#include "memory/universe.hpp" |
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#include "oops/markOop.hpp" |
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#include "oops/oop.hpp" |
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#include "runtime/timer.hpp" |
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#include "utilities/growableArray.hpp" |
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class ReferenceProcessor; |
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// G1MarkSweep takes care of global mark-compact garbage collection for a |
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// G1CollectedHeap using a four-phase pointer forwarding algorithm. All |
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// generations are assumed to support marking; those that can also support |
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// compaction. |
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// |
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// Class unloading will only occur when a full gc is invoked. |
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class G1MarkSweep : AllStatic { |
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friend class VM_G1MarkSweep; |
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friend class Scavenge; |
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public: |
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static void invoke_at_safepoint(ReferenceProcessor* rp, |
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bool clear_all_softrefs); |
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static STWGCTimer* gc_timer() { return GenMarkSweep::_gc_timer; } |
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static SerialOldTracer* gc_tracer() { return GenMarkSweep::_gc_tracer; } |
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private: |
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// Mark live objects |
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static void mark_sweep_phase1(bool& marked_for_deopt, |
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bool clear_all_softrefs); |
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// Calculate new addresses |
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static void mark_sweep_phase2(); |
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// Update pointers |
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static void mark_sweep_phase3(); |
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// Move objects to new positions |
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static void mark_sweep_phase4(); |
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static void allocate_stacks(); |
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}; |
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#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1MARKSWEEP_HPP |