1 /*
2 * Copyright (c) 1997, 2023, 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
61 // Initialization done by Java thread in init_globals()
62 void management_init();
63 void bytecodes_init();
64 void classLoader_init1();
65 void compilationPolicy_init();
66 void codeCache_init();
67 void VM_Version_init();
68 void initial_stubs_init();
69
70 jint universe_init(); // depends on codeCache_init and initial_stubs_init
71 // depends on universe_init, must be before interpreter_init (currently only on SPARC)
72 void gc_barrier_stubs_init();
73 void continuations_init(); // depends on flags (UseCompressedOops) and barrier sets
74 void continuation_stubs_init(); // depend on continuations_init
75 void interpreter_init_stub(); // before any methods loaded
76 void interpreter_init_code(); // after methods loaded, but before they are linked
77 void accessFlags_init();
78 void InterfaceSupport_init();
79 void universe2_init(); // dependent on codeCache_init and initial_stubs_init, loads primordial classes
80 void referenceProcessor_init();
81 void jni_handles_init();
82 void vmStructs_init() NOT_DEBUG_RETURN;
83
84 void vtableStubs_init();
85 bool compilerOracle_init();
86 bool compileBroker_init();
87 void dependencyContext_init();
88 void dependencies_init();
89
90 // Initialization after compiler initialization
91 bool universe_post_init(); // must happen after compiler_init
92 void javaClasses_init(); // must happen after vtable initialization
93 void compiler_stubs_init(bool in_compiler_thread); // compiler's StubRoutines stubs
94 void final_stubs_init(); // final StubRoutines stubs
95
96 // Do not disable thread-local-storage, as it is important for some
97 // JNI/JVM/JVMTI functions and signal handlers to work properly
98 // during VM shutdown
99 void perfMemory_exit();
100 void ostream_exit();
101
102 void vm_init_globals() {
103 check_ThreadShadow();
104 basic_types_init();
105 eventlog_init();
106 mutex_init();
107 universe_oopstorage_init();
108 perfMemory_init();
109 SuspendibleThreadSet_init();
110 }
111
112
113 jint init_globals() {
114 management_init();
115 JvmtiExport::initialize_oop_storage();
116 #if INCLUDE_JVMTI
117 if (AlwaysRecordEvolDependencies) {
118 JvmtiExport::set_can_hotswap_or_post_breakpoint(true);
119 JvmtiExport::set_all_dependencies_are_recorded(true);
120 }
121 #endif
122 bytecodes_init();
123 classLoader_init1();
124 compilationPolicy_init();
125 codeCache_init();
126 VM_Version_init(); // depends on codeCache_init for emitting code
127 initial_stubs_init();
128 jint status = universe_init(); // dependent on codeCache_init and
129 // initial_stubs_init and metaspace_init.
130 if (status != JNI_OK)
131 return status;
132
133 #ifdef LEAK_SANITIZER
134 {
135 // Register the Java heap with LSan.
136 VirtualSpaceSummary summary = Universe::heap()->create_heap_space_summary();
137 LSAN_REGISTER_ROOT_REGION(summary.start(), summary.reserved_size());
138 }
139 #endif // LEAK_SANITIZER
140
141 AsyncLogWriter::initialize();
142 gc_barrier_stubs_init(); // depends on universe_init, must be before interpreter_init
143 continuations_init(); // must precede continuation stub generation
144 continuation_stubs_init(); // depends on continuations_init
145 interpreter_init_stub(); // before methods get loaded
146 accessFlags_init();
147 InterfaceSupport_init();
148 VMRegImpl::set_regName(); // need this before generate_stubs (for printing oop maps).
149 SharedRuntime::generate_stubs();
150 return JNI_OK;
151 }
152
153 jint init_globals2() {
154 universe2_init(); // dependent on codeCache_init and initial_stubs_init
155 javaClasses_init(); // must happen after vtable initialization, before referenceProcessor_init
156 interpreter_init_code(); // after javaClasses_init and before any method gets linked
157 referenceProcessor_init();
158 jni_handles_init();
159 #if INCLUDE_VM_STRUCTS
160 vmStructs_init();
161 #endif // INCLUDE_VM_STRUCTS
162
163 vtableStubs_init();
164 if (!compilerOracle_init()) {
165 return JNI_EINVAL;
166 }
167 dependencyContext_init();
168 dependencies_init();
169
170 if (!compileBroker_init()) {
171 return JNI_EINVAL;
172 }
173 #if INCLUDE_JVMCI
174 if (EnableJVMCI) {
175 JVMCI::initialize_globals();
176 }
177 #endif
178
179 if (!universe_post_init()) {
180 return JNI_ERR;
181 }
182 compiler_stubs_init(false /* in_compiler_thread */); // compiler's intrinsics stubs
183 final_stubs_init(); // final StubRoutines stubs
184 MethodHandles::generate_adapters();
185
186 // All the flags that get adjusted by VM_Version_init and os::init_2
187 // have been set so dump the flags now.
188 if (PrintFlagsFinal || PrintFlagsRanges) {
189 JVMFlag::printFlags(tty, false, PrintFlagsRanges);
190 }
191
192 return JNI_OK;
193 }
194
195
196 void exit_globals() {
197 static bool destructorsCalled = false;
198 if (!destructorsCalled) {
199 destructorsCalled = true;
200 perfMemory_exit();
201 SafepointTracing::statistics_exit_log();
202 if (PrintStringTableStatistics) {
203 SymbolTable::dump(tty);
204 StringTable::dump(tty);
205 }
206 ostream_exit();
207 #ifdef LEAK_SANITIZER
208 {
209 // Unregister the Java heap with LSan.
210 VirtualSpaceSummary summary = Universe::heap()->create_heap_space_summary();
211 LSAN_UNREGISTER_ROOT_REGION(summary.start(), summary.reserved_size());
212 }
213 #endif // LEAK_SANITIZER
214 }
215 }
216
217 static volatile bool _init_completed = false;
218
219 bool is_init_completed() {
220 return Atomic::load_acquire(&_init_completed);
221 }
222
223 void wait_init_completed() {
224 MonitorLocker ml(InitCompleted_lock, Monitor::_no_safepoint_check_flag);
225 while (!_init_completed) {
226 ml.wait();
227 }
228 }
229
230 void set_init_completed() {
231 assert(Universe::is_fully_initialized(), "Should have completed initialization");
232 MonitorLocker ml(InitCompleted_lock, Monitor::_no_safepoint_check_flag);
233 Atomic::release_store(&_init_completed, true);
234 ml.notify_all();
235 }