Mercurial > hg > graal-jvmci-8
view src/share/vm/memory/serialize.cpp @ 1088:3fc996d4edd2
6902303: G1: ScavengeALot should cause an incremental, rather than a full, collection
Summary: ScavengeALot now causes an incremental (but possibly partially young, in the G1 sense) collection. Some such collections may be abandoned on account of MMU specs. Band-aided a native leak associated with abandoned pauses, as well as an MMU tracker overflow related to frequent scavenge events in the face of a large MMU denominator interval; the latter is protected by a product flag that defaults to false.
Reviewed-by: tonyp
author | ysr |
---|---|
date | Thu, 19 Nov 2009 13:43:25 -0800 |
parents | 89e0543e1737 |
children | c18cbe5936b8 |
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/* * Copyright 2003-2009 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ # include "incls/_precompiled.incl" # include "incls/_serialize.cpp.incl" // Serialize out the block offset shared array for the shared spaces. void CompactingPermGenGen::serialize_bts(SerializeOopClosure* soc) { _ro_bts->serialize(soc, readonly_bottom, readonly_end); _rw_bts->serialize(soc, readwrite_bottom, readwrite_end); } // Read/write a data stream for restoring/preserving oop pointers and // miscellaneous data from/to the shared archive file. void CompactingPermGenGen::serialize_oops(SerializeOopClosure* soc) { int tag = 0; soc->do_tag(--tag); assert(!UseCompressedOops, "UseCompressedOops doesn't work with shared archive"); // Verify the sizes of various oops in the system. soc->do_tag(sizeof(oopDesc)); soc->do_tag(sizeof(instanceOopDesc)); soc->do_tag(sizeof(methodOopDesc)); soc->do_tag(sizeof(constMethodOopDesc)); soc->do_tag(sizeof(methodDataOopDesc)); soc->do_tag(arrayOopDesc::base_offset_in_bytes(T_BYTE)); soc->do_tag(sizeof(constantPoolOopDesc)); soc->do_tag(sizeof(constantPoolCacheOopDesc)); soc->do_tag(objArrayOopDesc::base_offset_in_bytes()); soc->do_tag(typeArrayOopDesc::base_offset_in_bytes(T_BYTE)); soc->do_tag(sizeof(symbolOopDesc)); soc->do_tag(sizeof(klassOopDesc)); soc->do_tag(sizeof(markOopDesc)); soc->do_tag(sizeof(compiledICHolderOopDesc)); // Dump the block offset table entries. GenCollectedHeap* gch = GenCollectedHeap::heap(); CompactingPermGenGen* pg = (CompactingPermGenGen*)gch->perm_gen(); pg->serialize_bts(soc); soc->do_tag(--tag); pg->ro_space()->serialize_block_offset_array_offsets(soc); soc->do_tag(--tag); pg->rw_space()->serialize_block_offset_array_offsets(soc); soc->do_tag(--tag); // Special case - this oop needed in oop->is_oop() assertions. soc->do_ptr((void**)&Universe::_klassKlassObj); soc->do_tag(--tag); // Dump/restore miscellaneous oops. Universe::oops_do(soc, true); soc->do_tag(--tag); vmSymbols::oops_do(soc, true); soc->do_tag(--tag); CodeCache::oops_do(soc); soc->do_tag(--tag); soc->do_tag(666); }