1 /*
   2  * Copyright (c) 1997, 2019, 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/continuation.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/orderAccess.hpp"
  44 #include "runtime/safepoint.hpp"
  45 #include "runtime/sharedRuntime.hpp"
  46 #include "services/memTracker.hpp"
  47 #include "utilities/macros.hpp"
  48 
  49 
  50 // Initialization done by VM thread in vm_init_globals()
  51 void check_ThreadShadow();
  52 void eventlog_init();
  53 void mutex_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 os_init_globals();        // depends on VM_Version_init, before universe_init
  66 void stubRoutines_init1();
  67 void stubRoutines_initContinuationStubs();
  68 jint universe_init();          // depends on codeCache_init and stubRoutines_init
  69 // depends on universe_init, must be before interpreter_init (currently only on SPARC)
  70 void gc_barrier_stubs_init();
  71 void interpreter_init();       // before any methods loaded
  72 void invocationCounter_init(); // before any methods loaded
  73 void accessFlags_init();
  74 void templateTable_init();
  75 void InterfaceSupport_init();
  76 void universe2_init();  // dependent on codeCache_init and stubRoutines_init, loads primordial classes
  77 void referenceProcessor_init();
  78 void jni_handles_init();
  79 void vmStructs_init();
  80 
  81 void vtableStubs_init();
  82 void InlineCacheBuffer_init();
  83 void compilerOracle_init();
  84 bool compileBroker_init();
  85 void dependencyContext_init();
  86 
  87 // Initialization after compiler initialization
  88 bool universe_post_init();  // must happen after compiler_init
  89 void javaClasses_init();  // must happen after vtable initialization
  90 void stubRoutines_init2(); // note: StubRoutines need 2-phase init
  91 
  92 void continuations_init(); // depends on flags (UseCompressedOops, LoomGenCode) and barrier sets
  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   chunkpool_init();
 106   perfMemory_init();
 107   SuspendibleThreadSet_init();
 108 }
 109 
 110 
 111 jint init_globals() {
 112   HandleMark hm;
 113   management_init();
 114   bytecodes_init();
 115   classLoader_init1();
 116   compilationPolicy_init();
 117   codeCache_init();
 118   VM_Version_init();
 119   os_init_globals();
 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   gc_barrier_stubs_init();   // depends on universe_init, must be before interpreter_init
 127   stubRoutines_initContinuationStubs();
 128   interpreter_init();        // before any methods loaded
 129   invocationCounter_init();  // before any methods loaded
 130   accessFlags_init();
 131   templateTable_init();
 132   InterfaceSupport_init();
 133   VMRegImpl::set_regName();  // need this before generate_stubs (for printing oop maps).
 134   SharedRuntime::generate_stubs();
 135   universe2_init();  // dependent on codeCache_init and stubRoutines_init1
 136   javaClasses_init();// must happen after vtable initialization, before referenceProcessor_init
 137   referenceProcessor_init();
 138   jni_handles_init();
 139 #if INCLUDE_VM_STRUCTS
 140   vmStructs_init();
 141 #endif // INCLUDE_VM_STRUCTS
 142 
 143   vtableStubs_init();
 144   InlineCacheBuffer_init();
 145   compilerOracle_init();
 146   dependencyContext_init();
 147 
 148   if (!compileBroker_init()) {
 149     return JNI_EINVAL;
 150   }
 151 #if INCLUDE_JVMCI
 152   if (EnableJVMCI) {
 153     JVMCI::initialize_globals();
 154   }
 155 #endif
 156 
 157   if (!universe_post_init()) {
 158     return JNI_ERR;
 159   }
 160   stubRoutines_init2(); // note: StubRoutines need 2-phase init
 161   MethodHandles::generate_adapters();
 162 
 163   continuations_init();
 164 
 165 #if INCLUDE_NMT
 166   // Solaris stack is walkable only after stubRoutines are set up.
 167   // On Other platforms, the stack is always walkable.
 168   NMT_stack_walkable = true;
 169 #endif // INCLUDE_NMT
 170 
 171   // All the flags that get adjusted by VM_Version_init and os::init_2
 172   // have been set so dump the flags now.
 173   if (PrintFlagsFinal || PrintFlagsRanges) {
 174     JVMFlag::printFlags(tty, false, PrintFlagsRanges);
 175   }
 176 
 177 
 178   return JNI_OK;
 179 }
 180 
 181 
 182 void exit_globals() {
 183   static bool destructorsCalled = false;
 184   if (!destructorsCalled) {
 185     destructorsCalled = true;
 186     if (log_is_enabled(Info, monitorinflation)) {
 187       // The ObjectMonitor subsystem uses perf counters so
 188       // do this before perfMemory_exit().
 189       // ObjectSynchronizer::finish_deflate_idle_monitors()'s call
 190       // to audit_and_print_stats() is done at the Debug level.
 191       ObjectSynchronizer::audit_and_print_stats(true /* on_exit */);
 192     }
 193     perfMemory_exit();
 194     SafepointTracing::statistics_exit_log();
 195     if (PrintStringTableStatistics) {
 196       SymbolTable::dump(tty);
 197       StringTable::dump(tty);
 198     }
 199     ostream_exit();
 200   }
 201 }
 202 
 203 static volatile bool _init_completed = false;
 204 
 205 bool is_init_completed() {
 206   return OrderAccess::load_acquire(&_init_completed);
 207 }
 208 
 209 void wait_init_completed() {
 210   MonitorLocker ml(InitCompleted_lock, Monitor::_no_safepoint_check_flag);
 211   while (!_init_completed) {
 212     ml.wait();
 213   }
 214 }
 215 
 216 void set_init_completed() {
 217   assert(Universe::is_fully_initialized(), "Should have completed initialization");
 218   MonitorLocker ml(InitCompleted_lock, Monitor::_no_safepoint_check_flag);
 219   OrderAccess::release_store(&_init_completed, true);
 220   ml.notify_all();
 221 }