1 /* 2 * Copyright (c) 2003, 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 "classfile/symbolTable.hpp" 27 #include "classfile/systemDictionary.hpp" 28 #include "code/codeCache.hpp" 29 #include "memory/classify.hpp" 30 #include "memory/compactingPermGenGen.hpp" 31 #include "oops/compiledICHolderOop.hpp" 32 #include "oops/methodDataOop.hpp" 33 #include "oops/objArrayOop.hpp" 34 #include "oops/oop.inline.hpp" 35 36 37 // Serialize out the block offset shared array for the shared spaces. 38 39 void CompactingPermGenGen::serialize_bts(SerializeOopClosure* soc) { 40 _ro_bts->serialize(soc, readonly_bottom, readonly_end); 41 _rw_bts->serialize(soc, readwrite_bottom, readwrite_end); 42 } 43 44 45 // Read/write a data stream for restoring/preserving oop pointers and 46 // miscellaneous data from/to the shared archive file. 47 48 void CompactingPermGenGen::serialize_oops(SerializeOopClosure* soc) { 49 int tag = 0; 50 soc->do_tag(--tag); 51 52 assert(!UseCompressedOops, "UseCompressedOops doesn't work with shared archive"); 53 // Verify the sizes of various oops in the system. 54 soc->do_tag(sizeof(oopDesc)); 55 soc->do_tag(sizeof(instanceOopDesc)); 56 soc->do_tag(sizeof(methodOopDesc)); 57 soc->do_tag(sizeof(constMethodOopDesc)); 58 soc->do_tag(sizeof(methodDataOopDesc)); 59 soc->do_tag(arrayOopDesc::base_offset_in_bytes(T_BYTE)); 60 soc->do_tag(sizeof(constantPoolOopDesc)); 61 soc->do_tag(sizeof(constantPoolCacheOopDesc)); 62 soc->do_tag(objArrayOopDesc::base_offset_in_bytes()); 63 soc->do_tag(typeArrayOopDesc::base_offset_in_bytes(T_BYTE)); 64 soc->do_tag(sizeof(symbolOopDesc)); 65 soc->do_tag(sizeof(klassOopDesc)); 66 soc->do_tag(sizeof(markOopDesc)); 67 soc->do_tag(sizeof(compiledICHolderOopDesc)); 68 69 // Dump the block offset table entries. 70 GenCollectedHeap* gch = GenCollectedHeap::heap(); 71 CompactingPermGenGen* pg = (CompactingPermGenGen*)gch->perm_gen(); 72 pg->serialize_bts(soc); 73 soc->do_tag(--tag); 74 pg->ro_space()->serialize_block_offset_array_offsets(soc); 75 soc->do_tag(--tag); 76 pg->rw_space()->serialize_block_offset_array_offsets(soc); 77 soc->do_tag(--tag); 78 79 // Special case - this oop needed in oop->is_oop() assertions. 80 soc->do_ptr((void**)&Universe::_klassKlassObj); 81 soc->do_tag(--tag); 82 83 // Dump/restore miscellaneous oops. 84 Universe::oops_do(soc, true); 85 soc->do_tag(--tag); 86 87 vmSymbols::oops_do(soc, true); soc->do_tag(--tag); 88 CodeCache::oops_do(soc); soc->do_tag(--tag); 89 soc->do_tag(666); 90 }