Mercurial > hg > graal-jvmci-8
view src/share/vm/gc_implementation/g1/heapRegionSets.hpp @ 2188:c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
7007446: G1: expand the heap with a single step, not one region at a time
Summary: Changed G1CollectedHeap::expand() to expand the committed space by calling VirtualSpace::expand_by() once rather than for every region in the expansion amount. This allows the success or failure of the expansion to be determined before creating any heap regions. Introduced a develop flag G1ExitOnExpansionFailure (false by default) that, when true, will exit the VM if the expansion of the committed space fails. Finally G1CollectedHeap::expand() returns a status back to it's caller so that the caller knows whether to attempt the allocation.
Reviewed-by: brutisso, tonyp
author | johnc |
---|---|
date | Wed, 02 Feb 2011 10:41:20 -0800 |
parents | 0fa27f37d4d4 |
children | fe189d4a44e9 |
line wrap: on
line source
/* * copyright (c) 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP #include "gc_implementation/g1/heapRegionSet.inline.hpp" //////////////////// FreeRegionList //////////////////// class FreeRegionList : public HeapRegionLinkedList { protected: virtual const char* verify_region_extra(HeapRegion* hr); virtual bool regions_humongous() { return false; } virtual bool regions_empty() { return true; } public: FreeRegionList(const char* name) : HeapRegionLinkedList(name) { } }; //////////////////// MasterFreeRegionList //////////////////// class MasterFreeRegionList : public FreeRegionList { protected: virtual bool check_mt_safety(); public: MasterFreeRegionList(const char* name) : FreeRegionList(name) { } }; //////////////////// SecondaryFreeRegionList //////////////////// class SecondaryFreeRegionList : public FreeRegionList { protected: virtual bool check_mt_safety(); public: SecondaryFreeRegionList(const char* name) : FreeRegionList(name) { } }; //////////////////// HumongousRegionSet //////////////////// class HumongousRegionSet : public HeapRegionSet { protected: virtual const char* verify_region_extra(HeapRegion* hr); virtual bool regions_humongous() { return true; } virtual bool regions_empty() { return false; } public: HumongousRegionSet(const char* name) : HeapRegionSet(name) { } }; //////////////////// MasterHumongousRegionSet //////////////////// class MasterHumongousRegionSet : public HumongousRegionSet { protected: virtual bool check_mt_safety(); public: MasterHumongousRegionSet(const char* name) : HumongousRegionSet(name) { } }; #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSETS_HPP