Mercurial > hg > truffle
view src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp @ 941:8b46c4d82093
4957990: Perm heap bloat in JVM
Summary: Treat ProfileData in MDO's as a source of weak, not strong, roots. Fixes the bug for stop-world collection -- the case of concurrent collection will be fixed separately.
Reviewed-by: jcoomes, jmasa, kvn, never
author | ysr |
---|---|
date | Wed, 02 Sep 2009 00:04:29 -0700 |
parents | 05f89f00a864 |
children | c18cbe5936b8 |
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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); } } } #ifndef PRODUCT void KlassRememberingOopClosure::check_remember_klasses() const { assert(_should_remember_klasses == must_remember_klasses(), "Should remember klasses in this context."); } #endif void KlassRememberingOopClosure::remember_klass(Klass* k) { if (!_revisit_stack->push(oop(k))) { fatal("Revisit stack overflow in PushOrMarkClosure"); } check_remember_klasses(); } inline void PushOrMarkClosure::remember_mdo(DataLayout* v) { // TBD } void Par_KlassRememberingOopClosure::remember_klass(Klass* k) { if (!_revisit_stack->par_push(oop(k))) { fatal("Revisit stack overflow in Par_KlassRememberingOopClosure"); } check_remember_klasses(); } inline void Par_PushOrMarkClosure::remember_mdo(DataLayout* v) { // TBD } inline void PushOrMarkClosure::do_yield_check() { _parent->do_yield_check(); } inline void Par_PushOrMarkClosure::do_yield_check() { _parent->do_yield_check(); }