Mercurial > hg > graal-jvmci-8
view src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp @ 263:12eea04c8b06
6672698: mangle_unused_area() should not remangle the entire heap at each collection.
Summary: Maintain a high water mark for the allocations in a space and mangle only up to that high water mark.
Reviewed-by: ysr, apetrusenko
author | jmasa |
---|---|
date | Wed, 09 Jul 2008 15:08:55 -0700 |
parents | a61af66fc99e |
children | 05f89f00a864 |
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/* * Copyright (c) 2007 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. * */ // Trim our work_queue so its length is below max at return inline void Par_MarkRefsIntoAndScanClosure::trim_queue(uint max) { while (_work_queue->size() > max) { oop newOop; if (_work_queue->pop_local(newOop)) { assert(newOop->is_oop(), "Expected an oop"); assert(_bit_map->isMarked((HeapWord*)newOop), "only grey objects on this stack"); // iterate over the oops in this oop, marking and pushing // the ones in CMS heap (i.e. in _span). newOop->oop_iterate(&_par_pushAndMarkClosure); } } } inline void PushOrMarkClosure::remember_klass(Klass* k) { if (!_revisitStack->push(oop(k))) { fatal("Revisit stack overflow in PushOrMarkClosure"); } } inline void Par_PushOrMarkClosure::remember_klass(Klass* k) { if (!_revisit_stack->par_push(oop(k))) { fatal("Revisit stack overflow in PushOrMarkClosure"); } } inline void PushOrMarkClosure::do_yield_check() { _parent->do_yield_check(); } inline void Par_PushOrMarkClosure::do_yield_check() { _parent->do_yield_check(); }