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1 /*
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2 * Copyright 2001-2006 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 # include "incls/_precompiled.incl"
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26 # include "incls/_immutableSpace.cpp.incl"
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27
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28 void ImmutableSpace::initialize(MemRegion mr) {
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29 HeapWord* bottom = mr.start();
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30 HeapWord* end = mr.end();
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31
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32 assert(Universe::on_page_boundary(bottom) && Universe::on_page_boundary(end),
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33 "invalid space boundaries");
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34
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35 _bottom = bottom;
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36 _end = end;
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37 }
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38
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39 void ImmutableSpace::oop_iterate(OopClosure* cl) {
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40 HeapWord* obj_addr = bottom();
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41 HeapWord* t = end();
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42 // Could call objects iterate, but this is easier.
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43 while (obj_addr < t) {
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44 obj_addr += oop(obj_addr)->oop_iterate(cl);
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45 }
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46 }
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47
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48 void ImmutableSpace::object_iterate(ObjectClosure* cl) {
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49 HeapWord* p = bottom();
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50 while (p < end()) {
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51 cl->do_object(oop(p));
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52 p += oop(p)->size();
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53 }
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54 }
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55
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56 #ifndef PRODUCT
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57
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58 void ImmutableSpace::print_short() const {
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59 tty->print(" space " SIZE_FORMAT "K, 100%% used", capacity_in_bytes() / K);
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60 }
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61
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62 void ImmutableSpace::print() const {
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63 print_short();
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64 tty->print_cr(" [%#-6lx,%#-6lx)", bottom(), end());
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65 }
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66
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67 #endif
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68
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69 void ImmutableSpace::verify(bool allow_dirty) const {
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70 HeapWord* p = bottom();
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71 HeapWord* t = end();
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72 HeapWord* prev_p = NULL;
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73 while (p < t) {
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74 oop(p)->verify();
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75 prev_p = p;
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76 p += oop(p)->size();
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77 }
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78 guarantee(p == end(), "end of last object must match end of space");
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79 }
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