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1 /* |
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2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 #ifndef SHARE_GC_Z_Z_GLOBALS_HPP |
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25 #define SHARE_GC_Z_Z_GLOBALS_HPP |
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26 |
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27 #define GC_Z_FLAGS(develop, \ |
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28 develop_pd, \ |
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29 product, \ |
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30 product_pd, \ |
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31 diagnostic, \ |
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32 diagnostic_pd, \ |
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33 experimental, \ |
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34 notproduct, \ |
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35 manageable, \ |
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36 product_rw, \ |
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37 lp64_product, \ |
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38 range, \ |
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39 constraint, \ |
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40 writeable) \ |
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41 \ |
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42 product(ccstr, ZPath, NULL, \ |
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43 "Filesystem path for Java heap backing storage " \ |
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44 "(must be a tmpfs or a hugetlbfs filesystem)") \ |
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45 \ |
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46 product(double, ZAllocationSpikeTolerance, 2.0, \ |
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47 "Allocation spike tolerance factor") \ |
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48 \ |
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49 product(double, ZFragmentationLimit, 25.0, \ |
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50 "Maximum allowed heap fragmentation") \ |
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51 \ |
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52 product(bool, ZStallOnOutOfMemory, true, \ |
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53 "Allow Java threads to stall and wait for GC to complete " \ |
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54 "instead of immediately throwing an OutOfMemoryError") \ |
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55 \ |
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56 product(size_t, ZMarkStacksMax, NOT_LP64(512*M) LP64_ONLY(8*G), \ |
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57 "Maximum number of bytes allocated for marking stacks") \ |
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58 range(32*M, NOT_LP64(512*M) LP64_ONLY(1024*G)) \ |
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59 \ |
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60 product(uint, ZCollectionInterval, 0, \ |
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61 "Force GC at a fixed time interval (in seconds)") \ |
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62 \ |
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63 product(uint, ZStatisticsInterval, 10, \ |
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64 "Time between statistics print outs (in seconds)") \ |
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65 range(1, (uint)-1) \ |
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66 \ |
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67 diagnostic(bool, ZStatisticsForceTrace, false, \ |
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68 "Force tracing of ZStats") \ |
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69 \ |
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70 diagnostic(bool, ZProactive, true, \ |
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71 "Enable proactive GC cycles") \ |
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72 \ |
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73 diagnostic(bool, ZUnmapBadViews, false, \ |
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74 "Unmap bad (inactive) heap views") \ |
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75 \ |
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76 diagnostic(bool, ZVerifyMarking, false, \ |
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77 "Verify marking stacks") \ |
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78 \ |
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79 diagnostic(bool, ZVerifyForwarding, false, \ |
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80 "Verify forwarding tables") \ |
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81 \ |
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82 diagnostic(bool, ZSymbolTableUnloading, false, \ |
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83 "Unload unused VM symbols") \ |
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84 \ |
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85 diagnostic(bool, ZWeakRoots, true, \ |
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86 "Treat JNI WeakGlobalRefs and StringTable as weak roots") \ |
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87 \ |
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88 diagnostic(bool, ZConcurrentStringTable, true, \ |
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89 "Clean StringTable concurrently") \ |
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90 \ |
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91 diagnostic(bool, ZConcurrentVMWeakHandles, true, \ |
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92 "Clean VM WeakHandles concurrently") \ |
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93 \ |
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94 diagnostic(bool, ZConcurrentJNIWeakGlobalHandles, true, \ |
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95 "Clean JNI WeakGlobalRefs concurrently") \ |
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96 \ |
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97 diagnostic(bool, ZOptimizeLoadBarriers, true, \ |
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98 "Apply load barrier optimizations") \ |
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99 \ |
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100 develop(bool, ZVerifyLoadBarriers, false, \ |
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101 "Verify that reference loads are followed by barriers") |
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102 |
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103 #endif // SHARE_GC_Z_Z_GLOBALS_HPP |