1 /* 2 * Copyright (c) 1997, 2025, 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 #include "cds/metaspaceShared.hpp" 26 #include "classfile/stringTable.hpp" 27 #include "classfile/symbolTable.hpp" 28 #include "classfile/systemDictionary.hpp" 29 #include "code/aotCodeCache.hpp" 30 #include "compiler/compiler_globals.hpp" 31 #include "gc/shared/collectedHeap.hpp" 32 #include "gc/shared/gcHeapSummary.hpp" 33 #include "interpreter/bytecodes.hpp" 34 #include "logging/logAsyncWriter.hpp" 35 #include "memory/universe.hpp" 36 #include "nmt/memTracker.hpp" 37 #include "oops/trainingData.hpp" 38 #include "prims/downcallLinker.hpp" 39 #include "prims/jvmtiExport.hpp" 40 #include "prims/methodHandles.hpp" 41 #include "runtime/atomic.hpp" 42 #include "runtime/continuation.hpp" 43 #include "runtime/flags/jvmFlag.hpp" 44 #include "runtime/globals.hpp" 45 #include "runtime/handles.inline.hpp" 46 #include "runtime/icache.hpp" 47 #include "runtime/init.hpp" 48 #include "runtime/safepoint.hpp" 49 #include "runtime/sharedRuntime.hpp" 50 #include "sanitizers/leak.hpp" 51 #include "utilities/macros.hpp" 52 #include "utilities/xmlstream.hpp" 53 #if INCLUDE_JVMCI 54 #include "jvmci/jvmci.hpp" 55 #endif 56 57 // Initialization done by VM thread in vm_init_globals() 58 void check_ThreadShadow(); 59 void eventlog_init(); 60 void mutex_init(); 61 void universe_oopstorage_init(); 62 void perfMemory_init(); 63 void SuspendibleThreadSet_init(); 64 void ExternalsRecorder_init(); // After mutex_init() and before CodeCache_init 65 66 // Initialization done by Java thread in init_globals() 67 void management_init(); 68 void bytecodes_init(); 69 void classLoader_init1(); 70 void compilationPolicy_init(); 71 void codeCache_init(); 72 void VM_Version_init(); 73 void icache_init2(); 74 void preuniverse_stubs_init(); 75 void initial_stubs_init(); 76 77 jint universe_init(); // depends on codeCache_init and preuniverse_stubs_init 78 // depends on universe_init, must be before interpreter_init (currently only on SPARC) 79 void gc_barrier_stubs_init(); 80 void continuations_init(); // depends on flags (UseCompressedOops) and barrier sets 81 void continuation_stubs_init(); // depend on continuations_init 82 void interpreter_init_stub(); // before any methods loaded 83 void interpreter_init_code(); // after methods loaded, but before they are linked 84 void accessFlags_init(); 85 void InterfaceSupport_init(); 86 void universe2_init(); // dependent on codeCache_init and initial_stubs_init, loads primordial classes 87 void referenceProcessor_init(); 88 void jni_handles_init(); 89 void vmStructs_init() NOT_DEBUG_RETURN; 90 91 void vtableStubs_init(); 92 bool compilerOracle_init(); 93 bool compileBroker_init(); 94 void dependencyContext_init(); 95 void dependencies_init(); 96 97 // initialize upcalls before class loading 98 bool runtimeUpcalls_open_registration(); 99 bool runtimeUpcallNop_register_upcalls(); 100 #if INCLUDE_CDS 101 bool cdsEndTrainingUpcall_register_upcalls(); 102 #endif // INCLUDE_CDS 103 void runtimeUpcalls_close_registration(); 104 105 // Initialization after compiler initialization 106 bool universe_post_init(); // must happen after compiler_init 107 void javaClasses_init(); // must happen after vtable initialization 108 void compiler_stubs_init(bool in_compiler_thread); // compiler's StubRoutines stubs 109 void final_stubs_init(); // final StubRoutines stubs 110 111 // Do not disable thread-local-storage, as it is important for some 112 // JNI/JVM/JVMTI functions and signal handlers to work properly 113 // during VM shutdown 114 void perfMemory_exit(); 115 void ostream_exit(); 116 117 void perf_jvm_init(); 118 119 void vm_init_globals() { 120 check_ThreadShadow(); 121 basic_types_init(); 122 eventlog_init(); 123 mutex_init(); 124 universe_oopstorage_init(); 125 perfMemory_init(); 126 SuspendibleThreadSet_init(); 127 ExternalsRecorder_init(); // After mutex_init() and before CodeCache_init 128 } 129 130 131 jint init_globals() { 132 perf_jvm_init(); 133 MethodHandles::init_counters(); 134 135 management_init(); 136 JvmtiExport::initialize_oop_storage(); 137 #if INCLUDE_JVMTI 138 if (AlwaysRecordEvolDependencies) { 139 JvmtiExport::set_can_hotswap_or_post_breakpoint(true); 140 JvmtiExport::set_all_dependencies_are_recorded(true); 141 } 142 #endif 143 bytecodes_init(); 144 classLoader_init1(); 145 compilationPolicy_init(); 146 MetaspaceShared::open_static_archive(); 147 codeCache_init(); 148 VM_Version_init(); // depends on codeCache_init for emitting code 149 icache_init2(); // depends on VM_Version for choosing the mechanism 150 // initialize stubs needed before we can init the universe 151 preuniverse_stubs_init(); 152 jint status = universe_init(); // dependent on codeCache_init and preuniverse_stubs_init 153 if (status != JNI_OK) { 154 return status; 155 } 156 #ifdef LEAK_SANITIZER 157 { 158 // Register the Java heap with LSan. 159 VirtualSpaceSummary summary = Universe::heap()->create_heap_space_summary(); 160 LSAN_REGISTER_ROOT_REGION(summary.start(), summary.reserved_size()); 161 } 162 #endif // LEAK_SANITIZER 163 AOTCodeCache::init2(); // depends on universe_init, must be before initial_stubs_init 164 AsyncLogWriter::initialize(); 165 166 initial_stubs_init(); // initial stub routines 167 // stack overflow exception blob is referenced by the interpreter 168 SharedRuntime::generate_initial_stubs(); 169 AOTCodeCache::init_early_stubs_table(); // need this after initial_stubs 170 gc_barrier_stubs_init(); // depends on universe_init, must be before interpreter_init 171 continuations_init(); // must precede continuation stub generation 172 continuation_stubs_init(); // depends on continuations_init 173 #if INCLUDE_JFR 174 SharedRuntime::generate_jfr_stubs(); 175 #endif 176 interpreter_init_stub(); // before methods get loaded 177 accessFlags_init(); 178 InterfaceSupport_init(); 179 VMRegImpl::set_regName(); // need this before generate_stubs (for printing oop maps). 180 SharedRuntime::generate_stubs(); 181 AOTCodeCache::init_shared_blobs_table(); // need this after generate_stubs 182 SharedRuntime::init_adapter_library(); // do this after AOTCodeCache::init_shared_blobs_table 183 return JNI_OK; 184 } 185 186 jint init_globals2() { 187 universe2_init(); // dependent on codeCache_init and initial_stubs_init 188 189 // initialize upcalls before class loading / initialization 190 runtimeUpcalls_open_registration(); 191 if (!runtimeUpcallNop_register_upcalls()) { 192 return JNI_EINVAL; 193 } 194 #if INCLUDE_CDS 195 if (!cdsEndTrainingUpcall_register_upcalls()) { 196 return JNI_EINVAL; 197 } 198 #endif // INCLUDE_CDS 199 runtimeUpcalls_close_registration(); 200 201 javaClasses_init(); // must happen after vtable initialization, before referenceProcessor_init 202 interpreter_init_code(); // after javaClasses_init and before any method gets linked 203 referenceProcessor_init(); 204 jni_handles_init(); 205 #if INCLUDE_VM_STRUCTS 206 vmStructs_init(); 207 #endif // INCLUDE_VM_STRUCTS 208 209 vtableStubs_init(); 210 if (!compilerOracle_init()) { 211 return JNI_EINVAL; 212 } 213 dependencyContext_init(); 214 dependencies_init(); 215 216 if (!compileBroker_init()) { 217 return JNI_EINVAL; 218 } 219 #if INCLUDE_JVMCI 220 if (EnableJVMCI) { 221 JVMCI::initialize_globals(); 222 } 223 #endif 224 // Initialize TrainingData only we're recording/replaying 225 if (TrainingData::have_data() || TrainingData::need_data()) { 226 TrainingData::initialize(); 227 } 228 229 // Initialize TrainingData only we're recording/replaying 230 if (TrainingData::have_data() || TrainingData::need_data()) { 231 TrainingData::initialize(); 232 } 233 234 if (!universe_post_init()) { 235 return JNI_ERR; 236 } 237 compiler_stubs_init(false /* in_compiler_thread */); // compiler's intrinsics stubs 238 final_stubs_init(); // final StubRoutines stubs 239 AOTCodeCache::init_stubs_table(); 240 MethodHandles::generate_adapters(); 241 242 // All the flags that get adjusted by VM_Version_init and os::init_2 243 // have been set so dump the flags now. 244 if (PrintFlagsFinal || PrintFlagsRanges) { 245 JVMFlag::printFlags(tty, false, PrintFlagsRanges); 246 } else if (AOTRecordTraining && xtty != nullptr) { 247 JVMFlag::printFlags(xtty->log_only(), false, PrintFlagsRanges); 248 } 249 250 return JNI_OK; 251 } 252 253 254 void exit_globals() { 255 static bool destructorsCalled = false; 256 if (!destructorsCalled) { 257 destructorsCalled = true; 258 perfMemory_exit(); 259 SafepointTracing::statistics_exit_log(); 260 if (PrintStringTableStatistics) { 261 SymbolTable::dump(tty); 262 StringTable::dump(tty); 263 } 264 ostream_exit(); 265 #ifdef LEAK_SANITIZER 266 { 267 // Unregister the Java heap with LSan. 268 VirtualSpaceSummary summary = Universe::heap()->create_heap_space_summary(); 269 LSAN_UNREGISTER_ROOT_REGION(summary.start(), summary.reserved_size()); 270 } 271 #endif // LEAK_SANITIZER 272 } 273 } 274 275 static volatile bool _init_completed = false; 276 277 bool is_init_completed() { 278 return Atomic::load_acquire(&_init_completed); 279 } 280 281 void wait_init_completed() { 282 MonitorLocker ml(InitCompleted_lock, Monitor::_no_safepoint_check_flag); 283 while (!_init_completed) { 284 ml.wait(); 285 } 286 } 287 288 void set_init_completed() { 289 assert(Universe::is_fully_initialized(), "Should have completed initialization"); 290 MonitorLocker ml(InitCompleted_lock, Monitor::_no_safepoint_check_flag); 291 Atomic::release_store(&_init_completed, true); 292 ml.notify_all(); 293 }