1 /*
2 * Copyright (c) 1997, 2020, 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 "gc/shared/collectedHeap.hpp"
30 #if INCLUDE_JVMCI
31 #include "jvmci/jvmci.hpp"
32 #endif
33 #include "interpreter/bytecodes.hpp"
34 #include "logging/log.hpp"
35 #include "logging/logTag.hpp"
36 #include "memory/universe.hpp"
37 #include "prims/methodHandles.hpp"
38 #include "runtime/atomic.hpp"
39 #include "runtime/flags/jvmFlag.hpp"
40 #include "runtime/handles.inline.hpp"
41 #include "runtime/icache.hpp"
42 #include "runtime/init.hpp"
43 #include "runtime/safepoint.hpp"
44 #include "runtime/sharedRuntime.hpp"
45 #include "services/memTracker.hpp"
46 #include "utilities/macros.hpp"
47
48
49 // Initialization done by VM thread in vm_init_globals()
50 void check_ThreadShadow();
51 void eventlog_init();
52 void mutex_init();
53 void oopstorage_init();
54 void chunkpool_init();
55 void perfMemory_init();
56 void SuspendibleThreadSet_init();
57
58 // Initialization done by Java thread in init_globals()
59 void management_init();
60 void bytecodes_init();
61 void classLoader_init1();
62 void compilationPolicy_init();
63 void codeCache_init();
64 void VM_Version_init();
65 void stubRoutines_init1();
66 jint universe_init(); // depends on codeCache_init and stubRoutines_init
67 // depends on universe_init, must be before interpreter_init (currently only on SPARC)
68 void gc_barrier_stubs_init();
69 void interpreter_init(); // before any methods loaded
70 void invocationCounter_init(); // before any methods loaded
71 void accessFlags_init();
72 void InterfaceSupport_init();
73 void universe2_init(); // dependent on codeCache_init and stubRoutines_init, loads primordial classes
74 void referenceProcessor_init();
75 void jni_handles_init();
76 void vmStructs_init() NOT_DEBUG_RETURN;
77
78 void vtableStubs_init();
79 void InlineCacheBuffer_init();
80 void compilerOracle_init();
81 bool compileBroker_init();
82 void dependencyContext_init();
83
84 // Initialization after compiler initialization
85 bool universe_post_init(); // must happen after compiler_init
86 void javaClasses_init(); // must happen after vtable initialization
87 void stubRoutines_init2(); // note: StubRoutines need 2-phase init
88
89 // Do not disable thread-local-storage, as it is important for some
90 // JNI/JVM/JVMTI functions and signal handlers to work properly
91 // during VM shutdown
92 void perfMemory_exit();
93 void ostream_exit();
94
95 void vm_init_globals() {
96 check_ThreadShadow();
97 basic_types_init();
98 eventlog_init();
99 mutex_init();
100 oopstorage_init();
101 chunkpool_init();
102 perfMemory_init();
103 SuspendibleThreadSet_init();
104 }
105
106
107 jint init_globals() {
108 HandleMark hm;
109 management_init();
110 bytecodes_init();
111 classLoader_init1();
112 compilationPolicy_init();
113 codeCache_init();
114 VM_Version_init();
115 stubRoutines_init1();
116 jint status = universe_init(); // dependent on codeCache_init and
117 // stubRoutines_init1 and metaspace_init.
118 if (status != JNI_OK)
119 return status;
120
121 gc_barrier_stubs_init(); // depends on universe_init, must be before interpreter_init
122 interpreter_init(); // before any methods loaded
123 invocationCounter_init(); // before any methods loaded
124 accessFlags_init();
125 InterfaceSupport_init();
126 VMRegImpl::set_regName(); // need this before generate_stubs (for printing oop maps).
127 SharedRuntime::generate_stubs();
128 universe2_init(); // dependent on codeCache_init and stubRoutines_init1
129 javaClasses_init();// must happen after vtable initialization, before referenceProcessor_init
130 referenceProcessor_init();
131 jni_handles_init();
132 #if INCLUDE_VM_STRUCTS
133 vmStructs_init();
134 #endif // INCLUDE_VM_STRUCTS
135
136 vtableStubs_init();
137 InlineCacheBuffer_init();
138 compilerOracle_init();
139 dependencyContext_init();
140
141 if (!compileBroker_init()) {
142 return JNI_EINVAL;
143 }
144 #if INCLUDE_JVMCI
145 if (EnableJVMCI) {
146 JVMCI::initialize_globals();
147 }
148 #endif
149
150 if (!universe_post_init()) {
151 return JNI_ERR;
152 }
153 stubRoutines_init2(); // note: StubRoutines need 2-phase init
154 MethodHandles::generate_adapters();
155
156 #if INCLUDE_NMT
157 // Solaris stack is walkable only after stubRoutines are set up.
158 // On Other platforms, the stack is always walkable.
159 NMT_stack_walkable = true;
160 #endif // INCLUDE_NMT
161
162 // All the flags that get adjusted by VM_Version_init and os::init_2
163 // have been set so dump the flags now.
164 if (PrintFlagsFinal || PrintFlagsRanges) {
165 JVMFlag::printFlags(tty, false, PrintFlagsRanges);
166 }
167
168 return JNI_OK;
169 }
170
171
172 void exit_globals() {
173 static bool destructorsCalled = false;
174 if (!destructorsCalled) {
175 destructorsCalled = true;
176 if (log_is_enabled(Info, monitorinflation)) {
177 // The ObjectMonitor subsystem uses perf counters so
178 // do this before perfMemory_exit().
179 // ObjectSynchronizer::finish_deflate_idle_monitors()'s call
180 // to audit_and_print_stats() is done at the Debug level.
181 ObjectSynchronizer::audit_and_print_stats(true /* on_exit */);
182 }
183 perfMemory_exit();
184 SafepointTracing::statistics_exit_log();
185 if (PrintStringTableStatistics) {
186 SymbolTable::dump(tty);
187 StringTable::dump(tty);
188 }
189 ostream_exit();
190 }
191 }
192
193 static volatile bool _init_completed = false;
194
195 bool is_init_completed() {
196 return Atomic::load_acquire(&_init_completed);
197 }
198
199 void wait_init_completed() {
200 MonitorLocker ml(InitCompleted_lock, Monitor::_no_safepoint_check_flag);
201 while (!_init_completed) {
202 ml.wait();
203 }
204 }
205
206 void set_init_completed() {
207 assert(Universe::is_fully_initialized(), "Should have completed initialization");
208 MonitorLocker ml(InitCompleted_lock, Monitor::_no_safepoint_check_flag);
209 Atomic::release_store(&_init_completed, true);
210 ml.notify_all();
211 }