src/hotspot/share/gc/z/z_globals.hpp
author eosterlund
Thu, 30 Aug 2018 08:59:23 +0200
changeset 51587 b459c731901b
parent 51405 8b23aa7cef47
child 51590 3aaf039a3636
permissions -rw-r--r--
8210061: ZGC: Remove STW weak processor mode Reviewed-by: pliden, kbarrett
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/*
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 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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#ifndef SHARE_GC_Z_Z_GLOBALS_HPP
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#define SHARE_GC_Z_Z_GLOBALS_HPP
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#define GC_Z_FLAGS(develop,                                                 \
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                   develop_pd,                                              \
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                   product,                                                 \
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                   product_pd,                                              \
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                   diagnostic,                                              \
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                   diagnostic_pd,                                           \
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                   experimental,                                            \
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                   notproduct,                                              \
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                   manageable,                                              \
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                   product_rw,                                              \
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                   lp64_product,                                            \
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                   range,                                                   \
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                   constraint,                                              \
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                   writeable)                                               \
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                                                                            \
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  product(ccstr, ZPath, NULL,                                               \
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          "Filesystem path for Java heap backing storage "                  \
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          "(must be a tmpfs or a hugetlbfs filesystem)")                    \
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                                                                            \
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  product(double, ZAllocationSpikeTolerance, 2.0,                           \
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          "Allocation spike tolerance factor")                              \
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                                                                            \
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  product(double, ZFragmentationLimit, 25.0,                                \
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          "Maximum allowed heap fragmentation")                             \
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                                                                            \
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  product(bool, ZStallOnOutOfMemory, true,                                  \
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          "Allow Java threads to stall and wait for GC to complete "        \
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          "instead of immediately throwing an OutOfMemoryError")            \
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                                                                            \
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  product(size_t, ZMarkStackSpaceLimit, 8*G,                                \
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          "Maximum number of bytes allocated for mark stacks")              \
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          range(32*M, 1024*G)                                               \
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                                                                            \
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  product(uint, ZCollectionInterval, 0,                                     \
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          "Force GC at a fixed time interval (in seconds)")                 \
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                                                                            \
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  product(uint, ZStatisticsInterval, 10,                                    \
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          "Time between statistics print outs (in seconds)")                \
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          range(1, (uint)-1)                                                \
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                                                                            \
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  diagnostic(bool, ZStatisticsForceTrace, false,                            \
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          "Force tracing of ZStats")                                        \
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                                                                            \
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  diagnostic(bool, ZProactive, true,                                        \
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          "Enable proactive GC cycles")                                     \
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                                                                            \
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  diagnostic(bool, ZUnmapBadViews, false,                                   \
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          "Unmap bad (inactive) heap views")                                \
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                                                                            \
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  diagnostic(bool, ZVerifyMarking, false,                                   \
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          "Verify marking stacks")                                          \
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                                                                            \
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  diagnostic(bool, ZVerifyForwarding, false,                                \
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          "Verify forwarding tables")                                       \
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                                                                            \
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  diagnostic(bool, ZWeakRoots, true,                                        \
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          "Treat JNI WeakGlobalRefs and StringTable as weak roots")         \
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                                                                            \
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  diagnostic(bool, ZOptimizeLoadBarriers, true,                             \
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          "Apply load barrier optimizations")                               \
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                                                                            \
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  develop(bool, ZVerifyLoadBarriers, false,                                 \
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          "Verify that reference loads are followed by barriers")
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#endif // SHARE_GC_Z_Z_GLOBALS_HPP