1 /* 2 * Copyright (c) 2001, 2014, 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 "precompiled.hpp" 26 #include "utilities/macros.hpp" 27 #if INCLUDE_ALL_GCS 28 #include "gc_implementation/shared/immutableSpace.hpp" 29 #include "memory/universe.hpp" 30 #include "oops/oop.inline.hpp" 31 #endif // INCLUDE_ALL_GCS 32 33 void ImmutableSpace::initialize(MemRegion mr) { 34 HeapWord* bottom = mr.start(); 35 HeapWord* end = mr.end(); 36 37 assert(Universe::on_page_boundary(bottom) && Universe::on_page_boundary(end), 38 "invalid space boundaries"); 39 40 _bottom = bottom; 41 _end = end; 42 } 43 44 void ImmutableSpace::oop_iterate(ExtendedOopClosure* cl) { 45 HeapWord* obj_addr = bottom(); 46 HeapWord* t = end(); 47 // Could call objects iterate, but this is easier. 48 while (obj_addr < t) { 49 obj_addr += oop(obj_addr)->oop_iterate(cl); 50 } 51 } 52 53 void ImmutableSpace::object_iterate(ObjectClosure* cl) { 54 HeapWord* p = bottom(); 55 while (p < end()) { 56 cl->do_object(oop(p)); 57 p += oop(p)->size(); 58 } 59 } 60 61 #ifndef PRODUCT 62 63 void ImmutableSpace::print_short() const { 64 tty->print(" space " SIZE_FORMAT "K, 100%% used", capacity_in_bytes() / K); 65 } 66 67 void ImmutableSpace::print() const { 68 print_short(); 69 tty->print_cr(" [" INTPTR_FORMAT_W(#-6) "," INTPTR_FORMAT_W(#-6) ")", p2i(bottom()), p2i(end())); 70 } 71 72 #endif 73 74 void ImmutableSpace::verify() { 75 HeapWord* p = bottom(); 76 HeapWord* t = end(); 77 HeapWord* prev_p = NULL; 78 while (p < t) { 79 oop(p)->verify(); 80 prev_p = p; 81 p += oop(p)->size(); 82 } 83 guarantee(p == end(), "end of last object must match end of space"); 84 }