Mercurial > hg > truffle
view src/cpu/zero/vm/shark_globals_zero.hpp @ 1837:c99c53f07c14
6692906: CMS: parallel concurrent marking may be prone to hanging or stalling mutators for periods of time
Summary: Inserted missing yield(check)s in closures used during the work-stealing phase of parallel concurrent marking, a missing synchronous yield-request in the cms perm gen allocation path, and a terminator-terminator for the offer_termination invocation that monitors the yield status of the concurrent marking task. Elaborated some documentation comments and made some task queue termination loop flags configurable at start-up to aid debugging in the field.
Reviewed-by: jmasa, johnc, poonam
author | ysr |
---|---|
date | Wed, 29 Sep 2010 16:17:02 -0700 |
parents | d2ede61b7a12 |
children | f95d63e2154a |
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/* * Copyright (c) 2000, 2007, Oracle and/or its affiliates. All rights reserved. * Copyright 2008, 2009, 2010 Red Hat, Inc. * 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. * */ // Set the default values for platform dependent flags used by the // Shark compiler. See globals.hpp for details of what they do. define_pd_global(bool, BackgroundCompilation, true ); define_pd_global(bool, UseTLAB, true ); define_pd_global(bool, ResizeTLAB, true ); define_pd_global(bool, InlineIntrinsics, false); define_pd_global(bool, PreferInterpreterNativeStubs, false); define_pd_global(bool, ProfileTraps, false); define_pd_global(bool, UseOnStackReplacement, true ); define_pd_global(bool, TieredCompilation, false); define_pd_global(intx, CompileThreshold, 1500); define_pd_global(intx, Tier2CompileThreshold, 1500); define_pd_global(intx, Tier3CompileThreshold, 2500); define_pd_global(intx, Tier4CompileThreshold, 4500); define_pd_global(intx, BackEdgeThreshold, 100000); define_pd_global(intx, Tier2BackEdgeThreshold, 100000); define_pd_global(intx, Tier3BackEdgeThreshold, 100000); define_pd_global(intx, Tier4BackEdgeThreshold, 100000); define_pd_global(intx, OnStackReplacePercentage, 933 ); define_pd_global(intx, FreqInlineSize, 325 ); define_pd_global(intx, InlineSmallCode, 1000 ); define_pd_global(intx, NewRatio, 12 ); define_pd_global(intx, NewSizeThreadIncrease, 4*K ); define_pd_global(intx, InitialCodeCacheSize, 160*K); define_pd_global(intx, ReservedCodeCacheSize, 32*M ); define_pd_global(bool, ProfileInterpreter, false); define_pd_global(intx, CodeCacheExpansionSize, 32*K ); define_pd_global(uintx, CodeCacheMinBlockLength, 1 ); define_pd_global(uintx, PermSize, 12*M ); define_pd_global(uintx, MaxPermSize, 64*M ); define_pd_global(bool, NeverActAsServerClassMachine, true ); define_pd_global(uint64_t, MaxRAM, 1ULL*G); define_pd_global(bool, CICompileOSR, true );