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