1 /*
   2  * Copyright (c) 1997, 2020, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_GC_PARALLEL_PARALLEL_GLOBALS_HPP
  26 #define SHARE_GC_PARALLEL_PARALLEL_GLOBALS_HPP
  27 
  28 #define GC_PARALLEL_FLAGS(develop,                                          \
  29                           develop_pd,                                       \
  30                           product,                                          \
  31                           product_pd,                                       \
  32                           diagnostic,                                       \
  33                           diagnostic_pd,                                    \
  34                           experimental,                                     \
  35                           notproduct,                                       \
  36                           manageable,                                       \
  37                           product_rw,                                       \
  38                           lp64_product,                                     \
  39                           range,                                            \
  40                           constraint)                                       \
  41   product(uintx, HeapMaximumCompactionInterval, 20,                         \
  42           "How often should we maximally compact the heap (not allowing "   \
  43           "any dead space)")                                                \
  44           range(0, max_uintx)                                               \
  45                                                                             \
  46   product(uintx, HeapFirstMaximumCompactionCount, 3,                        \
  47           "The collection count for the first maximum compaction")          \
  48           range(0, max_uintx)                                               \
  49                                                                             \
  50   product(bool, UseMaximumCompactionOnSystemGC, true,                       \
  51           "Use maximum compaction in the Parallel Old garbage collector "   \
  52           "for a system GC")                                                \
  53                                                                             \
  54   product(size_t, ParallelOldDeadWoodLimiterMean, 50,                        \
  55           "The mean used by the parallel compact dead wood "                \
  56           "limiter (a number between 0-100)")                               \
  57           range(0, 100)                                                     \
  58                                                                             \
  59   product(size_t, ParallelOldDeadWoodLimiterStdDev, 80,                      \
  60           "The standard deviation used by the parallel compact dead wood "  \
  61           "limiter (a number between 0-100)")                               \
  62           range(0, 100)                                                     \
  63                                                                             \
  64   develop(bool, TraceParallelOldGCMarkingPhase, false,                      \
  65           "Trace marking phase in ParallelOldGC")                           \
  66                                                                             \
  67   develop(bool, TraceParallelOldGCDensePrefix, false,                       \
  68           "Trace dense prefix computation for ParallelOldGC")               \
  69                                                                             \
  70   develop(uintx, GCWorkerDelayMillis, 0,                                    \
  71           "Delay in scheduling GC workers (in milliseconds)")               \
  72                                                                             \
  73   product(bool, PSChunkLargeArrays, true,                                   \
  74           "Process large arrays in chunks")
  75 
  76 #endif // SHARE_GC_PARALLEL_PARALLEL_GLOBALS_HPP
--- EOF ---