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/_g1BlockOffsetTable.cpp.incl" 27 28 ////////////////////////////////////////////////////////////////////// 29 // G1BlockOffsetSharedArray 30 ////////////////////////////////////////////////////////////////////// 31 32 G1BlockOffsetSharedArray::G1BlockOffsetSharedArray(MemRegion reserved, 33 size_t init_word_size) : 34 _reserved(reserved), _end(NULL) 35 { 36 size_t size = compute_size(reserved.word_size()); 37 ReservedSpace rs(ReservedSpace::allocation_align_size_up(size)); 38 if (!rs.is_reserved()) { 39 vm_exit_during_initialization("Could not reserve enough space for heap offset array"); 40 } 41 if (!_vs.initialize(rs, 0)) { 42 vm_exit_during_initialization("Could not reserve enough space for heap offset array"); 43 } 44 _offset_array = (u_char*)_vs.low_boundary(); 45 resize(init_word_size); 46 if (TraceBlockOffsetTable) { | 1 /* 2 * Copyright (c) 2001, 2010, 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 "gc_implementation/g1/g1BlockOffsetTable.inline.hpp" 27 #include "memory/space.hpp" 28 #include "oops/oop.inline.hpp" 29 #include "runtime/java.hpp" 30 31 ////////////////////////////////////////////////////////////////////// 32 // G1BlockOffsetSharedArray 33 ////////////////////////////////////////////////////////////////////// 34 35 G1BlockOffsetSharedArray::G1BlockOffsetSharedArray(MemRegion reserved, 36 size_t init_word_size) : 37 _reserved(reserved), _end(NULL) 38 { 39 size_t size = compute_size(reserved.word_size()); 40 ReservedSpace rs(ReservedSpace::allocation_align_size_up(size)); 41 if (!rs.is_reserved()) { 42 vm_exit_during_initialization("Could not reserve enough space for heap offset array"); 43 } 44 if (!_vs.initialize(rs, 0)) { 45 vm_exit_during_initialization("Could not reserve enough space for heap offset array"); 46 } 47 _offset_array = (u_char*)_vs.low_boundary(); 48 resize(init_word_size); 49 if (TraceBlockOffsetTable) { |