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src/hotspot/share/gc/parallel/parallel_globals.hpp

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   1 /*
   2  * Copyright (c) 1997, 2019, 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  *


  44           "any dead space)")                                                \
  45           range(0, max_uintx)                                               \
  46                                                                             \
  47   product(uintx, HeapFirstMaximumCompactionCount, 3,                        \
  48           "The collection count for the first maximum compaction")          \
  49           range(0, max_uintx)                                               \
  50                                                                             \
  51   product(bool, UseMaximumCompactionOnSystemGC, true,                       \
  52           "Use maximum compaction in the Parallel Old garbage collector "   \
  53           "for a system GC")                                                \
  54                                                                             \
  55   product(size_t, ParallelOldDeadWoodLimiterMean, 50,                        \
  56           "The mean used by the parallel compact dead wood "                \
  57           "limiter (a number between 0-100)")                               \
  58           range(0, 100)                                                     \
  59                                                                             \
  60   product(size_t, ParallelOldDeadWoodLimiterStdDev, 80,                      \
  61           "The standard deviation used by the parallel compact dead wood "  \
  62           "limiter (a number between 0-100)")                               \
  63           range(0, 100)                                                     \






  64                                                                             \
  65   develop(bool, TraceParallelOldGCMarkingPhase, false,                      \
  66           "Trace marking phase in ParallelOldGC")                           \
  67                                                                             \
  68   develop(bool, TraceParallelOldGCDensePrefix, false,                       \
  69           "Trace dense prefix computation for ParallelOldGC")               \
  70                                                                             \
  71   develop(uintx, GCWorkerDelayMillis, 0,                                    \
  72           "Delay in scheduling GC workers (in milliseconds)")               \
  73                                                                             \
  74   product(bool, PSChunkLargeArrays, true,                                   \
  75           "Process large arrays in chunks")
  76 
  77 #endif // SHARE_GC_PARALLEL_PARALLEL_GLOBALS_HPP
   1 /*
   2  * Copyright (c) 1997, 2018, 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  *


  44           "any dead space)")                                                \
  45           range(0, max_uintx)                                               \
  46                                                                             \
  47   product(uintx, HeapFirstMaximumCompactionCount, 3,                        \
  48           "The collection count for the first maximum compaction")          \
  49           range(0, max_uintx)                                               \
  50                                                                             \
  51   product(bool, UseMaximumCompactionOnSystemGC, true,                       \
  52           "Use maximum compaction in the Parallel Old garbage collector "   \
  53           "for a system GC")                                                \
  54                                                                             \
  55   product(size_t, ParallelOldDeadWoodLimiterMean, 50,                        \
  56           "The mean used by the parallel compact dead wood "                \
  57           "limiter (a number between 0-100)")                               \
  58           range(0, 100)                                                     \
  59                                                                             \
  60   product(size_t, ParallelOldDeadWoodLimiterStdDev, 80,                      \
  61           "The standard deviation used by the parallel compact dead wood "  \
  62           "limiter (a number between 0-100)")                               \
  63           range(0, 100)                                                     \
  64                                                                             \
  65   develop(bool, TraceGCTaskManager, false,                                  \
  66           "Trace actions of the GC task manager")                           \
  67                                                                             \
  68   develop(bool, TraceGCTaskQueue, false,                                    \
  69           "Trace actions of the GC task queues")                            \
  70                                                                             \
  71   develop(bool, TraceParallelOldGCMarkingPhase, false,                      \
  72           "Trace marking phase in ParallelOldGC")                           \
  73                                                                             \
  74   develop(bool, TraceParallelOldGCDensePrefix, false,                       \
  75           "Trace dense prefix computation for ParallelOldGC")               \
  76                                                                             \
  77   develop(uintx, GCWorkerDelayMillis, 0,                                    \
  78           "Delay in scheduling GC workers (in milliseconds)")               \
  79                                                                             \
  80   product(bool, PSChunkLargeArrays, true,                                   \
  81           "Process large arrays in chunks")
  82 
  83 #endif // SHARE_GC_PARALLEL_PARALLEL_GLOBALS_HPP
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