5c58d27aac
Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com> Co-authored-by: Mikael Gerdin <mikael.gerdin@oracle.com> Co-authored-by: Tom Rodriguez <tom.rodriguez@oracle.com> Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
/*
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* Copyright (c) 2001, 2012, 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_MEMORY_GENERATIONSPEC_HPP
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#define SHARE_VM_MEMORY_GENERATIONSPEC_HPP
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#include "memory/generation.hpp"
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// The specification of a generation. This class also encapsulates
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// some generation-specific behavior. This is done here rather than as a
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// virtual function of Generation because these methods are needed in
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// initialization of the Generations.
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class GenerationSpec : public CHeapObj<mtGC> {
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friend class VMStructs;
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private:
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Generation::Name _name;
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size_t _init_size;
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size_t _max_size;
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public:
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GenerationSpec(Generation::Name name, size_t init_size, size_t max_size) {
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_name = name;
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_init_size = init_size;
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_max_size = max_size;
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}
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Generation* init(ReservedSpace rs, int level, GenRemSet* remset);
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// Accessors
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Generation::Name name() const { return _name; }
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size_t init_size() const { return _init_size; }
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void set_init_size(size_t size) { _init_size = size; }
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size_t max_size() const { return _max_size; }
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void set_max_size(size_t size) { _max_size = size; }
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// Alignment
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void align(size_t alignment) {
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set_init_size(align_size_up(init_size(), alignment));
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set_max_size(align_size_up(max_size(), alignment));
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}
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// Return the number of regions contained in the generation which
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// might need to be independently covered by a remembered set.
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virtual int n_covered_regions() const { return 1; }
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};
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typedef GenerationSpec* GenerationSpecPtr;
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#endif // SHARE_VM_MEMORY_GENERATIONSPEC_HPP
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