1 /* 2 * Copyright (c) 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 #ifndef SHARE_GC_Z_ZFLAGS_HPP 25 #define SHARE_GC_Z_ZFLAGS_HPP 26 27 #include "runtime/globals.hpp" 28 29 #define Z_FLAGS(develop, \ 30 develop_pd, \ 31 product, \ 32 product_pd, \ 33 diagnostic, \ 34 diagnostic_pd, \ 35 experimental, \ 36 notproduct, \ 37 manageable, \ 38 product_rw, \ 39 range, \ 40 constraint, \ 41 writeable) \ 42 \ 43 product(bool, UseZGC, false, \ 44 "Use the Z garbage collector") \ 45 \ 46 product(ccstr, ZPath, NULL, \ 47 "Filesystem path for Java heap backing storage " \ 48 "(must be a tmpfs or a hugetlbfs filesystem)") \ 49 \ 50 product(double, ZAllocationSpikeTolerance, 2.0, \ 51 "Allocation spike tolerance factor") \ 52 \ 53 product(double, ZFragmentationLimit, 25.0, \ 54 "Maximum allowed heap fragmentation") \ 55 \ 56 product(bool, ZStallOnOutOfMemory, true, \ 57 "Allow Java threads to stall and wait for GC to complete " \ 58 "instead of immediately throwing an OutOfMemoryError") \ 59 \ 60 product(size_t, ZMarkStacksMax, NOT_LP64(512*M) LP64_ONLY(8*G), \ 61 "Maximum number of bytes allocated for marking stacks") \ 62 range(32*M, NOT_LP64(512*M) LP64_ONLY(1024*G)) \ 63 \ 64 product(uint, ZCollectionInterval, 0, \ 65 "Force GC at a fixed time interval (in seconds)") \ 66 \ 67 product(uint, ZStatisticsInterval, 10, \ 68 "Time between statistics print outs (in seconds)") \ 69 range(1, (uint)-1) \ 70 \ 71 diagnostic(bool, ZStatisticsForceTrace, false, \ 72 "Force tracing of ZStats") \ 73 \ 74 diagnostic(bool, ZUnmapBadViews, false, \ 75 "Unmap bad (inactive) heap views") \ 76 \ 77 diagnostic(bool, ZVerifyMarking, false, \ 78 "Verify marking stacks") \ 79 \ 80 diagnostic(bool, ZVerifyForwarding, false, \ 81 "Verify forwarding tables") \ 82 \ 83 diagnostic(bool, ZWeakRoots, true, \ 84 "Treat JNI WeakGlobalRefs and StringTable as weak roots") \ 85 \ 86 diagnostic(bool, ZConcurrentJNIWeakGlobalHandles, true, \ 87 "Clean JNI WeakGlobalRefs concurrently") \ 88 89 Z_FLAGS(DECLARE_DEVELOPER_FLAG, \ 90 DECLARE_PD_DEVELOPER_FLAG, \ 91 DECLARE_PRODUCT_FLAG, \ 92 DECLARE_PD_PRODUCT_FLAG, \ 93 DECLARE_DIAGNOSTIC_FLAG, \ 94 DECLARE_PD_DIAGNOSTIC_FLAG, \ 95 DECLARE_EXPERIMENTAL_FLAG, \ 96 DECLARE_NOTPRODUCT_FLAG, \ 97 DECLARE_MANAGEABLE_FLAG, \ 98 DECLARE_PRODUCT_RW_FLAG, \ 99 IGNORE_RANGE, \ 100 IGNORE_CONSTRAINT, \ 101 IGNORE_WRITEABLE) 102 103 #endif // SHARE_GC_Z_ZFLAGS_HPP