1 /* 2 * Copyright (c) 2001, 2008, 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 # include "incls/_precompiled.incl" 26 # include "incls/_immutableSpace.cpp.incl" 27 28 void ImmutableSpace::initialize(MemRegion mr) { 29 HeapWord* bottom = mr.start(); 30 HeapWord* end = mr.end(); 31 32 assert(Universe::on_page_boundary(bottom) && Universe::on_page_boundary(end), 33 "invalid space boundaries"); 34 35 _bottom = bottom; 36 _end = end; 37 } 38 39 void ImmutableSpace::oop_iterate(OopClosure* cl) { 40 HeapWord* obj_addr = bottom(); 41 HeapWord* t = end(); 42 // Could call objects iterate, but this is easier. 43 while (obj_addr < t) { 44 obj_addr += oop(obj_addr)->oop_iterate(cl); 45 } 46 } 47 48 void ImmutableSpace::object_iterate(ObjectClosure* cl) { 49 HeapWord* p = bottom(); 50 while (p < end()) { 51 cl->do_object(oop(p)); 52 p += oop(p)->size(); 53 } 54 } 55 56 #ifndef PRODUCT 57 58 void ImmutableSpace::print_short() const { 59 tty->print(" space " SIZE_FORMAT "K, 100%% used", capacity_in_bytes() / K); 60 } 61 62 void ImmutableSpace::print() const { 63 print_short(); 64 tty->print_cr(" [%#-6lx,%#-6lx)", bottom(), end()); 65 } 66 67 #endif 68 69 void ImmutableSpace::verify(bool allow_dirty) { 70 HeapWord* p = bottom(); 71 HeapWord* t = end(); 72 HeapWord* prev_p = NULL; 73 while (p < t) { 74 oop(p)->verify(); 75 prev_p = p; 76 p += oop(p)->size(); 77 } 78 guarantee(p == end(), "end of last object must match end of space"); 79 }