Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/shared/immutableSpace.cpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | b632e80fc9dc |
| children | db9981fd3124 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 6008 | 2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #ifndef SERIALGC | |
| 27 #include "gc_implementation/shared/immutableSpace.hpp" | |
| 28 #include "memory/universe.hpp" | |
| 29 #include "oops/oop.inline.hpp" | |
| 30 #endif | |
| 0 | 31 |
| 32 void ImmutableSpace::initialize(MemRegion mr) { | |
| 33 HeapWord* bottom = mr.start(); | |
| 34 HeapWord* end = mr.end(); | |
| 35 | |
| 36 assert(Universe::on_page_boundary(bottom) && Universe::on_page_boundary(end), | |
| 37 "invalid space boundaries"); | |
| 38 | |
| 39 _bottom = bottom; | |
| 40 _end = end; | |
| 41 } | |
| 42 | |
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43 void ImmutableSpace::oop_iterate(ExtendedOopClosure* cl) { |
| 0 | 44 HeapWord* obj_addr = bottom(); |
| 45 HeapWord* t = end(); | |
| 46 // Could call objects iterate, but this is easier. | |
| 47 while (obj_addr < t) { | |
| 48 obj_addr += oop(obj_addr)->oop_iterate(cl); | |
| 49 } | |
| 50 } | |
| 51 | |
| 52 void ImmutableSpace::object_iterate(ObjectClosure* cl) { | |
| 53 HeapWord* p = bottom(); | |
| 54 while (p < end()) { | |
| 55 cl->do_object(oop(p)); | |
| 56 p += oop(p)->size(); | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 #ifndef PRODUCT | |
| 61 | |
| 62 void ImmutableSpace::print_short() const { | |
| 63 tty->print(" space " SIZE_FORMAT "K, 100%% used", capacity_in_bytes() / K); | |
| 64 } | |
| 65 | |
| 66 void ImmutableSpace::print() const { | |
| 67 print_short(); | |
| 68 tty->print_cr(" [%#-6lx,%#-6lx)", bottom(), end()); | |
| 69 } | |
| 70 | |
| 71 #endif | |
| 72 | |
| 6008 | 73 void ImmutableSpace::verify() { |
| 0 | 74 HeapWord* p = bottom(); |
| 75 HeapWord* t = end(); | |
| 76 HeapWord* prev_p = NULL; | |
| 77 while (p < t) { | |
| 78 oop(p)->verify(); | |
| 79 prev_p = p; | |
| 80 p += oop(p)->size(); | |
| 81 } | |
| 82 guarantee(p == end(), "end of last object must match end of space"); | |
| 83 } |