1 /* 2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_MEMORY_COMPACTPERMGEN_HPP 26 #define SHARE_VM_MEMORY_COMPACTPERMGEN_HPP 27 28 #include "memory/generation.hpp" 29 #include "memory/permGen.hpp" 30 31 class ContigPermSpace; 32 class CardTableModRefBS; 33 class CompactingPermGenGen; 34 class PermanentGenerationSpec; 35 36 // A PermGen implemented with a contiguous space. 37 class CompactingPermGen: public PermGen { 38 friend class VMStructs; 39 protected: 40 // The "generation" view. 41 OneContigSpaceCardGeneration* _gen; 42 43 public: 44 CompactingPermGen(ReservedSpace rs, ReservedSpace shared_rs, 45 size_t initial_byte_size, GenRemSet* remset, 46 PermanentGenerationSpec* perm_spec); 47 48 HeapWord* mem_allocate(size_t size); 49 50 void compute_new_size(); 51 52 Generation* as_gen() const { return _gen; } 53 54 }; 55 56 #endif // SHARE_VM_MEMORY_COMPACTPERMGEN_HPP