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