1 /* 2 * Copyright (c) 2023, 2024, 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_CDS_CDSCONFIG_HPP 26 #define SHARE_CDS_CDSCONFIG_HPP 27 28 #include "memory/allStatic.hpp" 29 #include "utilities/globalDefinitions.hpp" 30 #include "utilities/macros.hpp" 31 32 class CDSConfig : public AllStatic { 33 #if INCLUDE_CDS 34 static bool _is_dumping_static_archive; 35 static bool _is_dumping_dynamic_archive; 36 static bool _dumping_full_module_graph_disabled; 37 static bool _loading_full_module_graph_disabled; 38 39 static bool _module_patching_disables_cds; 40 static bool _java_base_module_patching_disables_cds; 41 42 static char* _default_archive_path; 43 static char* _static_archive_path; 44 static char* _dynamic_archive_path; 45 #endif 46 47 static void extract_shared_archive_paths(const char* archive_path, 48 char** base_archive_path, 49 char** top_archive_path); 50 static void init_shared_archive_paths(); 51 static bool check_unsupported_cds_runtime_properties(); 52 53 public: 54 // Initialization and command-line checking 55 static void initialize() NOT_CDS_RETURN; 56 static void check_system_property(const char* key, const char* value) NOT_CDS_RETURN; 57 static void check_unsupported_dumping_properties() NOT_CDS_RETURN; 58 static bool check_vm_args_consistency(bool mode_flag_cmd_line) NOT_CDS_RETURN_(true); 59 60 static bool module_patching_disables_cds() { return _module_patching_disables_cds; } 61 static void set_module_patching_disables_cds() { _module_patching_disables_cds = true; } 62 static bool java_base_module_patching_disables_cds() { return _java_base_module_patching_disables_cds; } 63 static void set_java_base_module_patching_disables_cds() { _java_base_module_patching_disables_cds = true; } 64 65 // Basic CDS features 66 static bool is_dumping_archive() { return is_dumping_static_archive() || is_dumping_dynamic_archive(); } 67 static bool is_dumping_static_archive() { return CDS_ONLY(_is_dumping_static_archive) NOT_CDS(false); } 68 static void enable_dumping_static_archive() { CDS_ONLY(_is_dumping_static_archive = true); } 69 static bool is_dumping_dynamic_archive() { return CDS_ONLY(_is_dumping_dynamic_archive) NOT_CDS(false); } 70 static void enable_dumping_dynamic_archive() { CDS_ONLY(_is_dumping_dynamic_archive = true); } 71 static void disable_dumping_dynamic_archive() { CDS_ONLY(_is_dumping_dynamic_archive = false); } 72 73 // Archive paths 74 // Points to the classes.jsa in $JAVA_HOME 75 static char* default_archive_path() NOT_CDS_RETURN_(nullptr); 76 // The actual static archive (if any) selected at runtime 77 static const char* static_archive_path() { return CDS_ONLY(_static_archive_path) NOT_CDS(nullptr); } 78 // The actual dynamic archive (if any) selected at runtime 79 static const char* dynamic_archive_path() { return CDS_ONLY(_dynamic_archive_path) NOT_CDS(nullptr); } 80 81 static int num_archives(const char* archive_path) NOT_CDS_RETURN_(0); 82 83 84 // CDS archived heap 85 static bool is_dumping_heap() NOT_CDS_JAVA_HEAP_RETURN_(false); 86 static void disable_dumping_full_module_graph(const char* reason = nullptr) NOT_CDS_JAVA_HEAP_RETURN; 87 static bool is_dumping_full_module_graph() NOT_CDS_JAVA_HEAP_RETURN_(false); 88 static void disable_loading_full_module_graph(const char* reason = nullptr) NOT_CDS_JAVA_HEAP_RETURN; 89 static bool is_loading_full_module_graph() NOT_CDS_JAVA_HEAP_RETURN_(false); 90 91 static bool is_valhalla_preview(); 92 }; 93 94 #endif // SHARE_CDS_CDSCONFIG_HPP