1 /*
2 * Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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24
25 #ifndef SHARE_CDS_CDS_GLOBALS_HPP
26 #define SHARE_CDS_CDS_GLOBALS_HPP
27
28 #include "runtime/globals_shared.hpp"
29
30 //
31 // Defines all globals flags used by CDS.
32 //
33
34 #define CDS_FLAGS(develop, \
35 develop_pd, \
36 product, \
37 product_pd, \
38 range, \
39 constraint) \
40 /* Shared spaces */ \
41 \
42 product(bool, VerifySharedSpaces, false, \
43 "Verify integrity of shared spaces") \
44 \
45 product(bool, RecordDynamicDumpInfo, false, \
46 "Record class info for jcmd VM.cds dynamic_dump") \
47 \
48 product(bool, AutoCreateSharedArchive, false, \
49 "Create shared archive at exit if cds mapping failed") \
50 \
51 product(bool, PrintSharedArchiveAndExit, false, \
52 "Print shared archive file contents") \
53 \
54 product(size_t, SharedBaseAddress, LP64_ONLY(32*G) \
55 NOT_LP64(LINUX_ONLY(2*G) NOT_LINUX(0)), \
56 "Address to allocate shared memory region for class data") \
57 range(0, SIZE_MAX) \
58 \
59 product(ccstr, SharedArchiveConfigFile, nullptr, \
60 "Data to add to the CDS archive file") \
61 \
62 product(uint, SharedSymbolTableBucketSize, 4, \
63 "Average number of symbols per bucket in shared table") \
64 range(2, 246) \
65 \
66 product(bool, AllowArchivingWithJavaAgent, false, DIAGNOSTIC, \
67 "Allow Java agent to be run with CDS dumping (not applicable" \
68 " to AOT") \
69 \
70 develop(ccstr, ArchiveHeapTestClass, nullptr, \
71 "For JVM internal testing only. The static field named " \
72 "\"archivedObjects\" of the specified class is stored in the " \
73 "CDS archive heap") \
74 \
75 develop(ccstr, AOTInitTestClass, nullptr, \
76 "For JVM internal testing only. The specified class is stored " \
77 "in the initialized state in the AOT cache ") \
78 \
79 product(ccstr, DumpLoadedClassList, nullptr, \
80 "Dump the names all loaded classes, that could be stored into " \
81 "the CDS archive, in the specified file") \
82 \
83 product(ccstr, SharedClassListFile, nullptr, \
84 "Override the default CDS class list") \
85 \
86 product(ccstr, SharedArchiveFile, nullptr, \
87 "Override the default location of the CDS archive file") \
88 \
89 product(ccstr, ArchiveClassesAtExit, nullptr, \
90 "The path and name of the dynamic archive file") \
91 \
92 product(ccstr, ExtraSharedClassListFile, nullptr, \
93 "Extra classlist for building the CDS archive file") \
94 \
95 product(int, ArchiveRelocationMode, 1, DIAGNOSTIC, \
96 "(0) first map at preferred address, and if " \
97 "unsuccessful, map at alternative address; " \
98 "(1) always map at alternative address (default); " \
99 "(2) always map at preferred address, and if unsuccessful, " \
100 "do not map the archive") \
101 range(0, 2) \
102 \
103 /*========== New "AOT" flags =========================================*/ \
104 /* The following 3 flags are aliases of -Xshare:dump, */ \
105 /* -XX:SharedArchiveFile=..., etc. See CDSConfig::check_flag_aliases()*/ \
106 \
107 product(ccstr, AOTMode, nullptr, \
108 "Specifies how AOTCache should be created or used. Valid values " \
109 "are: off, record, create, auto, on; the default is auto") \
110 constraint(AOTModeConstraintFunc, AtParse) \
111 \
112 product(ccstr, AOTConfiguration, nullptr, \
113 "The configuration file written by -XX:AOTMode=record, and " \
114 "loaded by -XX:AOTMode=create. This file contains profiling data "\
115 "for deciding what contents should be added to AOTCache. ") \
116 constraint(AOTConfigurationConstraintFunc, AtParse) \
117 \
118 product(ccstr, AOTCache, nullptr, \
119 "Cache for improving start up and warm up") \
120 constraint(AOTCacheConstraintFunc, AtParse) \
121 \
122 product(ccstr, AOTCacheOutput, nullptr, \
123 "Specifies the file name for writing the AOT cache") \
124 \
125 product(bool, AOTInvokeDynamicLinking, false, DIAGNOSTIC, \
126 "AOT-link JVM_CONSTANT_InvokeDynamic entries in cached " \
127 "ConstantPools") \
128 \
129 product(bool, AOTClassLinking, false, \
130 "Load/link all archived classes for the boot/platform/app " \
131 "loaders before application main") \
132 \
133 product(bool, AOTCacheParallelRelocation, true, DIAGNOSTIC, \
134 "Use parallel relocation code to speed up startup.") \
135 \
136 /* flags to control training and deployment modes */ \
137 \
138 product(bool, AOTRecordTraining, false, DIAGNOSTIC, \
139 "Request output of training data for improved deployment.") \
140 \
141 product(bool, AOTReplayTraining, false, DIAGNOSTIC, \
142 "Read training data, if available, for use in this execution") \
143 \
144 product(bool, AOTPrintTrainingInfo, false, DIAGNOSTIC, \
145 "Print additional information about training") \
146 \
147 product(bool, AOTVerifyTrainingData, trueInDebug, DIAGNOSTIC, \
148 "Verify archived training data") \
149 \
150 product(bool, AOTCompileEagerly, false, DIAGNOSTIC, \
151 "Compile methods as soon as possible") \
152 \
153 /* AOT Code flags */ \
154 \
155 product(bool, AOTAdapterCaching, false, DIAGNOSTIC, \
156 "Enable saving and restoring i2c2i adapters in AOT cache") \
157 \
158 product(bool, AOTStubCaching, false, DIAGNOSTIC, \
159 "Enable saving and restoring stubs and code blobs in AOT cache") \
160 \
161 product(uint, AOTCodeMaxSize, 10*M, DIAGNOSTIC, \
162 "Buffer size in bytes for AOT code caching") \
163 range(1*M, max_jint) \
164 \
165 product(bool, AbortVMOnAOTCodeFailure, false, DIAGNOSTIC, \
166 "Abort VM on the first occurrence of AOT code load or store " \
167 "failure. By default VM will continue execute without AOT code.") \
168 \
169 develop(bool, TestAOTAdapterLinkFailure, false, \
170 "Test failure of adapter linking when loading from AOT cache.") \
171
172 // end of CDS_FLAGS
173
174 DECLARE_FLAGS(CDS_FLAGS)
175
176 #endif // SHARE_CDS_CDS_GLOBALS_HPP