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 * 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 writeable) \ 42 product(uintx, HeapMaximumCompactionInterval, 20, \ 43 "How often should we maximally compact the heap (not allowing " \ 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