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