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c96a95c4b8
Update copyright year for files that have been modified in 2008 Reviewed-by: ohair, tbell
75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/*
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* Copyright 2000-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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// All heaps contains a "permanent generation," containing permanent
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// (reflective) objects. This is like a regular generation in some ways,
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// but unlike one in others, and so is split apart.
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class Generation;
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class GenRemSet;
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class CSpaceCounters;
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// PermGen models the part of the heap
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class PermGen : public CHeapObj {
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friend class VMStructs;
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protected:
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size_t _capacity_expansion_limit; // maximum expansion allowed without a
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// full gc occuring
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HeapWord* mem_allocate_in_gen(size_t size, Generation* gen);
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public:
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enum Name {
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MarkSweepCompact, MarkSweep, ConcurrentMarkSweep
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};
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// Permanent allocation (initialized)
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virtual HeapWord* mem_allocate(size_t size) = 0;
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// Mark sweep support
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virtual void compute_new_size() = 0;
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// Ideally, we would use MI (IMHO) but we'll do delegation instead.
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virtual Generation* as_gen() const = 0;
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virtual void oop_iterate(OopClosure* cl) {
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Generation* g = as_gen();
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assert(g != NULL, "as_gen() NULL");
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g->oop_iterate(cl);
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}
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virtual void object_iterate(ObjectClosure* cl) {
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Generation* g = as_gen();
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assert(g != NULL, "as_gen() NULL");
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g->object_iterate(cl);
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}
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// Performance Counter support
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virtual void update_counters() {
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Generation* g = as_gen();
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assert(g != NULL, "as_gen() NULL");
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g->update_counters();
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}
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};
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