1 /*
  2  * Copyright (c) 1997, 2021, 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 #if INCLUDE_JVMCI
 32 #include "jvmci/jvmci.hpp"
 33 #endif
 34 #include "interpreter/bytecodes.hpp"
 35 #include "logging/log.hpp"
 36 #include "logging/logAsyncWriter.hpp"
 37 #include "logging/logTag.hpp"
 38 #include "memory/universe.hpp"
 39 #include "prims/jvmtiExport.hpp"
 40 #include "prims/methodHandles.hpp"
 41 #include "prims/universalNativeInvoker.hpp"
 42 #include "runtime/globals.hpp"
 43 #include "runtime/atomic.hpp"
 44 #include "runtime/flags/jvmFlag.hpp"
 45 #include "runtime/handles.inline.hpp"
 46 #include "runtime/icache.hpp"
 47 #include "runtime/init.hpp"
 48 #include "runtime/safepoint.hpp"
 49 #include "runtime/sharedRuntime.hpp"
 50 #include "services/memTracker.hpp"
 51 #include "utilities/macros.hpp"
 52 
 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 stubRoutines_init1();
 70 jint universe_init();          // depends on codeCache_init and stubRoutines_init
 71 // depends on universe_init, must be before interpreter_init (currently only on SPARC)
 72 void gc_barrier_stubs_init();
 73 void interpreter_init_stub();  // before any methods loaded
 74 void interpreter_init_code();  // after methods loaded, but before they are linked
 75 void accessFlags_init();
 76 void InterfaceSupport_init();
 77 void universe2_init();  // dependent on codeCache_init and stubRoutines_init, loads primordial classes
 78 void referenceProcessor_init();
 79 void jni_handles_init();
 80 void vmStructs_init() NOT_DEBUG_RETURN;
 81 
 82 void vtableStubs_init();
 83 void InlineCacheBuffer_init();
 84 void compilerOracle_init();
 85 bool compileBroker_init();
 86 void dependencyContext_init();
 87 void dependencies_init();
 88 
 89 // Initialization after compiler initialization
 90 bool universe_post_init();  // must happen after compiler_init
 91 void javaClasses_init();  // must happen after vtable initialization
 92 void stubRoutines_init2(); // note: StubRoutines need 2-phase init
 93 
 94 // Do not disable thread-local-storage, as it is important for some
 95 // JNI/JVM/JVMTI functions and signal handlers to work properly
 96 // during VM shutdown
 97 void perfMemory_exit();
 98 void ostream_exit();
 99 
100 void vm_init_globals() {
101   check_ThreadShadow();
102   basic_types_init();
103   eventlog_init();
104   mutex_init();
105   universe_oopstorage_init();
106   perfMemory_init();
107   SuspendibleThreadSet_init();
108 }
109 
110 
111 jint init_globals() {
112   management_init();
113   JvmtiExport::initialize_oop_storage();
114   bytecodes_init();
115   classLoader_init1();
116   compilationPolicy_init();
117   codeCache_init();
118   VM_Version_init();              // depends on codeCache_init for emitting code
119   VMRegImpl::set_regName();       // need this before generate_stubs (for printing oop maps).
120   stubRoutines_init1();
121   jint status = universe_init();  // dependent on codeCache_init and
122                                   // stubRoutines_init1 and metaspace_init.
123   if (status != JNI_OK)
124     return status;
125 
126   AsyncLogWriter::initialize();
127   gc_barrier_stubs_init();  // depends on universe_init, must be before interpreter_init
128   interpreter_init_stub();  // before methods get loaded
129   accessFlags_init();
130   InterfaceSupport_init();
131   SharedRuntime::generate_stubs();
132   universe2_init();  // dependent on codeCache_init and stubRoutines_init1
133   javaClasses_init();// must happen after vtable initialization, before referenceProcessor_init
134   interpreter_init_code();  // after javaClasses_init and before any method gets linked
135   referenceProcessor_init();
136   jni_handles_init();
137 #if INCLUDE_VM_STRUCTS
138   vmStructs_init();
139 #endif // INCLUDE_VM_STRUCTS
140 
141   vtableStubs_init();
142   InlineCacheBuffer_init();
143   compilerOracle_init();
144   dependencyContext_init();
145   dependencies_init();
146 
147   if (!compileBroker_init()) {
148     return JNI_EINVAL;
149   }
150 #if INCLUDE_JVMCI
151   if (EnableJVMCI) {
152     JVMCI::initialize_globals();
153   }
154 #endif
155 
156   if (!universe_post_init()) {
157     return JNI_ERR;
158   }
159   stubRoutines_init2(); // note: StubRoutines need 2-phase init
160   MethodHandles::generate_adapters();
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     perfMemory_exit();
177     SafepointTracing::statistics_exit_log();
178     if (PrintStringTableStatistics) {
179       SymbolTable::dump(tty);
180       StringTable::dump(tty);
181     }
182     ostream_exit();
183   }
184 }
185 
186 static volatile bool _init_completed = false;
187 
188 bool is_init_completed() {
189   return Atomic::load_acquire(&_init_completed);
190 }
191 
192 void wait_init_completed() {
193   MonitorLocker ml(InitCompleted_lock, Monitor::_no_safepoint_check_flag);
194   while (!_init_completed) {
195     ml.wait();
196   }
197 }
198 
199 void set_init_completed() {
200   assert(Universe::is_fully_initialized(), "Should have completed initialization");
201   MonitorLocker ml(InitCompleted_lock, Monitor::_no_safepoint_check_flag);
202   Atomic::release_store(&_init_completed, true);
203   ml.notify_all();
204 }