Fri, 09 May 2008 08:55:13 -0700
6670684: 4/5 SA command universe did not print out CMS space information
Summary: Forward port of Yumin's fix for 6670684 from HSX-11; Yumin verified the port was correct.
Reviewed-by: dcubed
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright (c) 2007 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | class CardTableRS; // fwd decl |
duke@435 | 26 | class ConcurrentMarkSweepGeneration; |
duke@435 | 27 | |
duke@435 | 28 | // A PermGen implemented with a CMS space, collected by a CMS collector. |
duke@435 | 29 | class CMSPermGen: public PermGen { |
duke@435 | 30 | friend class VMStructs; |
duke@435 | 31 | |
duke@435 | 32 | HeapWord* mem_allocate_work(size_t size); |
duke@435 | 33 | protected: |
duke@435 | 34 | // The "generation" view. |
duke@435 | 35 | ConcurrentMarkSweepGeneration* _gen; |
duke@435 | 36 | |
duke@435 | 37 | public: |
duke@435 | 38 | CMSPermGen(ReservedSpace rs, size_t initial_byte_size, |
duke@435 | 39 | CardTableRS* ct, FreeBlockDictionary::DictionaryChoice); |
duke@435 | 40 | |
duke@435 | 41 | HeapWord* mem_allocate(size_t size); |
duke@435 | 42 | |
duke@435 | 43 | void compute_new_size(); |
duke@435 | 44 | |
duke@435 | 45 | Generation* as_gen() const { return _gen; } |
duke@435 | 46 | }; |
duke@435 | 47 | |
duke@435 | 48 | // This is the "generation" view of a CMSPermGen. |
duke@435 | 49 | class CMSPermGenGen: public ConcurrentMarkSweepGeneration { |
duke@435 | 50 | // Abstractly, this is a subtype that gets access to protected fields. |
duke@435 | 51 | friend class CMSPermGen; |
duke@435 | 52 | public: |
duke@435 | 53 | CMSPermGenGen(ReservedSpace rs, size_t initial_byte_size, |
duke@435 | 54 | int level, CardTableRS* ct): |
duke@435 | 55 | // See comments in the constructor for CompactibleFreeListSpace |
duke@435 | 56 | // regarding not using adaptive free lists for a perm gen. |
duke@435 | 57 | ConcurrentMarkSweepGeneration(rs, initial_byte_size, // MinPermHeapExapnsion |
duke@435 | 58 | level, ct, false /* use adaptive freelists */, |
duke@435 | 59 | (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice) |
duke@435 | 60 | {} |
duke@435 | 61 | |
duke@435 | 62 | void initialize_performance_counters(); |
duke@435 | 63 | |
duke@435 | 64 | const char* name() const { |
duke@435 | 65 | return "concurrent-mark-sweep perm gen"; |
duke@435 | 66 | } |
duke@435 | 67 | |
duke@435 | 68 | const char* short_name() const { |
duke@435 | 69 | return "CMS Perm"; |
duke@435 | 70 | } |
duke@435 | 71 | |
duke@435 | 72 | bool must_be_youngest() const { return false; } |
duke@435 | 73 | bool must_be_oldest() const { return false; } |
duke@435 | 74 | }; |