Mercurial > hg > graal-jvmci-8
view src/share/vm/services/psMemoryPool.hpp @ 1394:1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
6871109: G1: remove the concept of the scan only prefix
Summary: Removed scan only regions and associated code. The young portion of the collection set is now constructed incrementally - when a young region is retired as the current allocation region it is added to the collection set.
Reviewed-by: apetrusenko, iveresov, tonyp
author | johnc |
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date | Thu, 22 Apr 2010 10:02:38 -0700 |
parents | a61af66fc99e |
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. * */ class PSGenerationPool : public CollectedMemoryPool { private: PSOldGen* _gen; public: PSGenerationPool(PSOldGen* pool, const char* name, PoolType type, bool support_usage_threshold); PSGenerationPool(PSPermGen* pool, const char* name, PoolType type, bool support_usage_threshold); MemoryUsage get_memory_usage(); size_t used_in_bytes() { return _gen->used_in_bytes(); } size_t max_size() const { return _gen->reserved().byte_size(); } }; class EdenMutableSpacePool : public CollectedMemoryPool { private: PSYoungGen* _gen; MutableSpace* _space; public: EdenMutableSpacePool(PSYoungGen* gen, MutableSpace* space, const char* name, PoolType type, bool support_usage_threshold); MutableSpace* space() { return _space; } MemoryUsage get_memory_usage(); size_t used_in_bytes() { return space()->used_in_bytes(); } size_t max_size() const { // Eden's max_size = max_size of Young Gen - the current committed size of survivor spaces return _gen->max_size() - _gen->from_space()->capacity_in_bytes() - _gen->to_space()->capacity_in_bytes(); } }; class SurvivorMutableSpacePool : public CollectedMemoryPool { private: PSYoungGen* _gen; public: SurvivorMutableSpacePool(PSYoungGen* gen, const char* name, PoolType type, bool support_usage_threshold); MemoryUsage get_memory_usage(); size_t used_in_bytes() { return _gen->from_space()->used_in_bytes(); } size_t committed_in_bytes() { return _gen->from_space()->capacity_in_bytes(); } size_t max_size() const { // Return current committed size of the from-space return _gen->from_space()->capacity_in_bytes(); } };