1 /*
   2  * Copyright (c) 1997, 2013, 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/symbolTable.hpp"
  27 #include "code/icBuffer.hpp"
  28 #include "gc_interface/collectedHeap.hpp"
  29 #include "interpreter/bytecodes.hpp"
  30 #include "memory/universe.hpp"
  31 #include "prims/methodHandles.hpp"
  32 #include "runtime/handles.inline.hpp"
  33 #include "runtime/icache.hpp"
  34 #include "runtime/init.hpp"
  35 #include "runtime/safepoint.hpp"
  36 #include "runtime/sharedRuntime.hpp"
  37 #include "utilities/macros.hpp"
  38 
  39 // Initialization done by VM thread in vm_init_globals()
  40 void check_ThreadShadow();
  41 void eventlog_init();
  42 void mutex_init();
  43 void chunkpool_init();
  44 void perfMemory_init();
  45 
  46 // Initialization done by Java thread in init_globals()
  47 void management_init();
  48 void bytecodes_init();
  49 void classLoader_init();
  50 void codeCache_init();
  51 void VM_Version_init();
  52 void os_init_globals();        // depends on VM_Version_init, before universe_init
  53 void stubRoutines_init1();
  54 jint universe_init();          // depends on codeCache_init and stubRoutines_init
  55 void interpreter_init();       // before any methods loaded
  56 void invocationCounter_init(); // before any methods loaded
  57 void marksweep_init();
  58 void accessFlags_init();
  59 void templateTable_init();
  60 void InterfaceSupport_init();
  61 void universe2_init();  // dependent on codeCache_init and stubRoutines_init, loads primordial classes
  62 void referenceProcessor_init();
  63 void jni_handles_init();
  64 void vmStructs_init();
  65 
  66 void vtableStubs_init();
  67 void InlineCacheBuffer_init();
  68 void compilerOracle_init();
  69 void compilationPolicy_init();
  70 void compileBroker_init();
  71 
  72 // Initialization after compiler initialization
  73 bool universe_post_init();  // must happen after compiler_init
  74 void javaClasses_init();  // must happen after vtable initialization
  75 void stubRoutines_init2(); // note: StubRoutines need 2-phase init
  76 
  77 // Do not disable thread-local-storage, as it is important for some
  78 // JNI/JVM/JVMTI functions and signal handlers to work properly
  79 // during VM shutdown
  80 void perfMemory_exit();
  81 void ostream_exit();
  82 
  83 void vm_init_globals() {
  84   check_ThreadShadow();
  85   basic_types_init();
  86   eventlog_init();
  87   mutex_init();
  88   chunkpool_init();
  89   perfMemory_init();
  90 }
  91 
  92 
  93 jint init_globals() {
  94   HandleMark hm;
  95   management_init();
  96   bytecodes_init();
  97   classLoader_init();
  98   compilationPolicy_init();
  99   codeCache_init();
 100   VM_Version_init();
 101   os_init_globals();
 102   stubRoutines_init1();
 103   jint status = universe_init();  // dependent on codeCache_init and
 104                                   // stubRoutines_init1 and metaspace_init.
 105   if (status != JNI_OK)
 106     return status;
 107 
 108   interpreter_init();  // before any methods loaded
 109   invocationCounter_init();  // before any methods loaded
 110   marksweep_init();
 111   accessFlags_init();
 112   templateTable_init();
 113   InterfaceSupport_init();
 114   SharedRuntime::generate_stubs();
 115   universe2_init();  // dependent on codeCache_init and stubRoutines_init1
 116   referenceProcessor_init();
 117   jni_handles_init();
 118 #if INCLUDE_VM_STRUCTS
 119   vmStructs_init();
 120 #endif // INCLUDE_VM_STRUCTS
 121 
 122   vtableStubs_init();
 123   InlineCacheBuffer_init();
 124   compilerOracle_init();
 125   compileBroker_init();
 126   VMRegImpl::set_regName();
 127 
 128   if (!universe_post_init()) {
 129     return JNI_ERR;
 130   }
 131   javaClasses_init();   // must happen after vtable initialization
 132   stubRoutines_init2(); // note: StubRoutines need 2-phase init
 133 
 134   // All the flags that get adjusted by VM_Version_init and os::init_2
 135   // have been set so dump the flags now.
 136   if (PrintFlagsFinal) {
 137     CommandLineFlags::printFlags(tty, false);
 138   }
 139 
 140   return JNI_OK;
 141 }
 142 
 143 
 144 void exit_globals() {
 145   static bool destructorsCalled = false;
 146   if (!destructorsCalled) {
 147     destructorsCalled = true;
 148     perfMemory_exit();
 149     if (PrintSafepointStatistics) {
 150       // Print the collected safepoint statistics.
 151       SafepointSynchronize::print_stat_on_exit();
 152     }
 153     if (PrintStringTableStatistics) {
 154       SymbolTable::dump(tty);
 155       StringTable::dump(tty);
 156     }
 157     ostream_exit();
 158   }
 159 }
 160 
 161 
 162 static bool _init_completed = false;
 163 
 164 bool is_init_completed() {
 165   return _init_completed;
 166 }
 167 
 168 
 169 void set_init_completed() {
 170   assert(Universe::is_fully_initialized(), "Should have completed initialization");
 171   _init_completed = true;
 172 }