1 /*
   2  * Copyright (c) 1997, 2017, 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 #include "interpreter/bytecodes.hpp"
  31 #include "memory/universe.hpp"
  32 #include "prims/methodHandles.hpp"
  33 #include "runtime/globals.hpp"
  34 #include "runtime/handles.inline.hpp"
  35 #include "runtime/icache.hpp"
  36 #include "runtime/init.hpp"
  37 #include "runtime/safepoint.hpp"
  38 #include "runtime/sharedRuntime.hpp"
  39 #include "services/memTracker.hpp"
  40 #include "utilities/macros.hpp"
  41 
  42 
  43 // Initialization done by VM thread in vm_init_globals()
  44 void check_ThreadShadow();
  45 void eventlog_init();
  46 void mutex_init();
  47 void chunkpool_init();
  48 void perfMemory_init();
  49 void SuspendibleThreadSet_init() NOT_ALL_GCS_RETURN;
  50 
  51 // Initialization done by Java thread in init_globals()
  52 void management_init();
  53 void bytecodes_init();
  54 void classLoader_init1();
  55 void compilationPolicy_init();
  56 void codeCache_init();
  57 void VM_Version_init();
  58 void os_init_globals();        // depends on VM_Version_init, before universe_init
  59 void stubRoutines_init1();
  60 jint universe_init();          // depends on codeCache_init and stubRoutines_init
  61 #if INCLUDE_ALL_GCS
  62 void g1_barrier_stubs_init();  // depends on universe_init, must be before interpreter_init
  63 #endif
  64 void interpreter_init();       // before any methods loaded
  65 void invocationCounter_init(); // before any methods loaded
  66 void marksweep_init();
  67 void accessFlags_init();
  68 void templateTable_init();
  69 void InterfaceSupport_init();
  70 void universe2_init();  // dependent on codeCache_init and stubRoutines_init, loads primordial classes
  71 void referenceProcessor_init();
  72 void jni_handles_init();
  73 void vmStructs_init();
  74 
  75 void vtableStubs_init();
  76 void InlineCacheBuffer_init();
  77 void compilerOracle_init();
  78 bool compileBroker_init();
  79 void dependencyContext_init();
  80 
  81 // Initialization after compiler initialization
  82 bool universe_post_init();  // must happen after compiler_init
  83 void javaClasses_init();  // must happen after vtable initialization
  84 void stubRoutines_init2(); // note: StubRoutines need 2-phase init
  85 
  86 // Do not disable thread-local-storage, as it is important for some
  87 // JNI/JVM/JVMTI functions and signal handlers to work properly
  88 // during VM shutdown
  89 void perfMemory_exit();
  90 void ostream_exit();
  91 
  92 void vm_init_globals() {
  93   check_ThreadShadow();
  94   basic_types_init();
  95   eventlog_init();
  96   mutex_init();
  97   chunkpool_init();
  98   perfMemory_init();
  99   SuspendibleThreadSet_init();
 100 }
 101 
 102 
 103 jint init_globals() {
 104   HandleMark hm;
 105   management_init();
 106   bytecodes_init();
 107   classLoader_init1();
 108   compilationPolicy_init();
 109   codeCache_init();
 110   VM_Version_init();
 111   os_init_globals();
 112   stubRoutines_init1();
 113   jint status = universe_init();  // dependent on codeCache_init and
 114                                   // stubRoutines_init1 and metaspace_init.
 115   if (status != JNI_OK)
 116     return status;
 117 
 118 #if INCLUDE_ALL_GCS
 119   g1_barrier_stubs_init();   // depends on universe_init, must be before interpreter_init
 120 #endif
 121   interpreter_init();        // before any methods loaded
 122   invocationCounter_init();  // before any methods loaded
 123   marksweep_init();
 124   accessFlags_init();
 125   templateTable_init();
 126   InterfaceSupport_init();
 127   SharedRuntime::generate_stubs();
 128   universe2_init();  // dependent on codeCache_init and stubRoutines_init1
 129   referenceProcessor_init();
 130   jni_handles_init();
 131 #if INCLUDE_VM_STRUCTS
 132   vmStructs_init();
 133 #endif // INCLUDE_VM_STRUCTS
 134 
 135   vtableStubs_init();
 136   InlineCacheBuffer_init();
 137   compilerOracle_init();
 138   dependencyContext_init();
 139 
 140   if (!compileBroker_init()) {
 141     return JNI_EINVAL;
 142   }
 143   VMRegImpl::set_regName();
 144 
 145   if (!universe_post_init()) {
 146     return JNI_ERR;
 147   }
 148   javaClasses_init();   // must happen after vtable initialization
 149   stubRoutines_init2(); // note: StubRoutines need 2-phase init
 150   MethodHandles::generate_adapters();
 151 
 152 #if INCLUDE_NMT
 153   // Solaris stack is walkable only after stubRoutines are set up.
 154   // On Other platforms, the stack is always walkable.
 155   NMT_stack_walkable = true;
 156 #endif // INCLUDE_NMT
 157 
 158   // All the flags that get adjusted by VM_Version_init and os::init_2
 159   // have been set so dump the flags now.
 160   if (PrintFlagsFinal || PrintFlagsRanges) {
 161     CommandLineFlags::printFlags(tty, false, PrintFlagsRanges);
 162   }
 163 
 164   return JNI_OK;
 165 }
 166 
 167 
 168 void exit_globals() {
 169   static bool destructorsCalled = false;
 170   if (!destructorsCalled) {
 171     destructorsCalled = true;
 172     perfMemory_exit();
 173     if (PrintSafepointStatistics) {
 174       // Print the collected safepoint statistics.
 175       SafepointSynchronize::print_stat_on_exit();
 176     }
 177     if (PrintStringTableStatistics) {
 178       SymbolTable::dump(tty);
 179       StringTable::dump(tty);
 180     }
 181     ostream_exit();
 182   }
 183 }
 184 
 185 static volatile bool _init_completed = false;
 186 
 187 bool is_init_completed() {
 188   return _init_completed;
 189 }
 190 
 191 
 192 void set_init_completed() {
 193   assert(Universe::is_fully_initialized(), "Should have completed initialization");
 194   _init_completed = true;
 195 }