Mercurial > hg > graal-compiler
view src/share/vm/services/psMemoryPool.cpp @ 2149:7e37af9d69ef
7011379: G1: overly long concurrent marking cycles
Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads.
Reviewed-by: johnc, ysr
author | tonyp |
---|---|
date | Wed, 19 Jan 2011 09:35:17 -0500 |
parents | f95d63e2154a |
children | da91efe96a93 |
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/* * Copyright (c) 2007, 2010, 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. * */ #include "precompiled.hpp" #include "classfile/systemDictionary.hpp" #include "classfile/vmSymbols.hpp" #include "gc_implementation/parallelScavenge/psPermGen.hpp" #include "oops/oop.inline.hpp" #include "runtime/handles.inline.hpp" #include "runtime/javaCalls.hpp" #include "services/lowMemoryDetector.hpp" #include "services/management.hpp" #include "services/memoryManager.hpp" #include "services/psMemoryPool.hpp" PSGenerationPool::PSGenerationPool(PSOldGen* gen, const char* name, PoolType type, bool support_usage_threshold) : CollectedMemoryPool(name, type, gen->capacity_in_bytes(), gen->reserved().byte_size(), support_usage_threshold), _gen(gen) { } PSGenerationPool::PSGenerationPool(PSPermGen* gen, const char* name, PoolType type, bool support_usage_threshold) : CollectedMemoryPool(name, type, gen->capacity_in_bytes(), gen->reserved().byte_size(), support_usage_threshold), _gen(gen) { } MemoryUsage PSGenerationPool::get_memory_usage() { size_t maxSize = (available_for_allocation() ? max_size() : 0); size_t used = used_in_bytes(); size_t committed = _gen->capacity_in_bytes(); return MemoryUsage(initial_size(), used, committed, maxSize); } // The max size of EdenMutableSpacePool = // max size of the PSYoungGen - capacity of two survivor spaces // // Max size of PS eden space is changing due to ergonomic. // PSYoungGen, PSOldGen, Eden, Survivor spaces are all resizable. // EdenMutableSpacePool::EdenMutableSpacePool(PSYoungGen* gen, MutableSpace* space, const char* name, PoolType type, bool support_usage_threshold) : CollectedMemoryPool(name, type, space->capacity_in_bytes(), (gen->max_size() - gen->from_space()->capacity_in_bytes() - gen->to_space()->capacity_in_bytes()), support_usage_threshold), _gen(gen), _space(space) { } MemoryUsage EdenMutableSpacePool::get_memory_usage() { size_t maxSize = (available_for_allocation() ? max_size() : 0); size_t used = used_in_bytes(); size_t committed = _space->capacity_in_bytes(); return MemoryUsage(initial_size(), used, committed, maxSize); } // The max size of SurvivorMutableSpacePool = // current capacity of the from-space // // PS from and to survivor spaces could have different sizes. // SurvivorMutableSpacePool::SurvivorMutableSpacePool(PSYoungGen* gen, const char* name, PoolType type, bool support_usage_threshold) : CollectedMemoryPool(name, type, gen->from_space()->capacity_in_bytes(), gen->from_space()->capacity_in_bytes(), support_usage_threshold), _gen(gen) { } MemoryUsage SurvivorMutableSpacePool::get_memory_usage() { size_t maxSize = (available_for_allocation() ? max_size() : 0); size_t used = used_in_bytes(); size_t committed = committed_in_bytes(); return MemoryUsage(initial_size(), used, committed, maxSize); }