1 /* 2 * Copyright (c) 1997, 2012, 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 38 // Initialization done by VM thread in vm_init_globals() 39 void check_ThreadShadow(); 40 void eventlog_init(); 41 void mutex_init(); 42 void chunkpool_init(); 43 void perfMemory_init(); 44 45 // Initialization done by Java thread in init_globals() 46 void management_init(); 47 void bytecodes_init(); 48 void classLoader_init(); 49 void codeCache_init(); 50 void VM_Version_init(); 51 void os_init_globals(); // depends on VM_Version_init, before universe_init 52 void stubRoutines_init1(); 53 jint universe_init(); // depends on codeCache_init and stubRoutines_init 54 void interpreter_init(); // before any methods loaded 55 void invocationCounter_init(); // before any methods loaded 56 void marksweep_init(); 57 void accessFlags_init(); 58 void templateTable_init(); 59 void InterfaceSupport_init(); 60 void universe2_init(); // dependent on codeCache_init and stubRoutines_init, loads primordial classes 61 void referenceProcessor_init(); 62 void jni_handles_init(); 63 void vmStructs_init(); 64 65 void vtableStubs_init(); 66 void InlineCacheBuffer_init(); 67 void compilerOracle_init(); 68 void compilationPolicy_init(); 69 void compileBroker_init(); 70 71 // Initialization after compiler initialization 72 bool universe_post_init(); // must happen after compiler_init 73 void javaClasses_init(); // must happen after vtable initialization 74 void stubRoutines_init2(); // note: StubRoutines need 2-phase init 75 76 // Do not disable thread-local-storage, as it is important for some 77 // JNI/JVM/JVMTI functions and signal handlers to work properly 78 // during VM shutdown 79 void perfMemory_exit(); 80 void ostream_exit(); 81 82 void vm_init_globals() { 83 check_ThreadShadow(); 84 basic_types_init(); 85 eventlog_init(); 86 mutex_init(); 87 chunkpool_init(); 88 perfMemory_init(); 89 } 90 91 92 jint init_globals() { 93 HandleMark hm; 94 management_init(); 95 bytecodes_init(); 96 classLoader_init(); 97 Metaspace::global_initialize(); // must be before codeCache 98 codeCache_init(); 99 VM_Version_init(); 100 os_init_globals(); 101 stubRoutines_init1(); 102 jint status = universe_init(); // dependent on codeCache_init and 103 // stubRoutines_init1 and metaspace_init. 104 if (status != JNI_OK) 105 return status; 106 107 interpreter_init(); // before any methods loaded 108 invocationCounter_init(); // before any methods loaded 109 marksweep_init(); 110 accessFlags_init(); 111 templateTable_init(); 112 InterfaceSupport_init(); 113 SharedRuntime::generate_stubs(); 114 universe2_init(); // dependent on codeCache_init and stubRoutines_init1 115 referenceProcessor_init(); 116 jni_handles_init(); 117 #ifndef VM_STRUCTS_KERNEL 118 vmStructs_init(); 119 #endif // VM_STRUCTS_KERNEL 120 121 vtableStubs_init(); 122 InlineCacheBuffer_init(); 123 compilerOracle_init(); 124 compilationPolicy_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 // Although we'd like to, we can't easily do a heap verify 135 // here because the main thread isn't yet a JavaThread, so 136 // its TLAB may not be made parseable from the usual interfaces. 137 if (VerifyBeforeGC && !UseTLAB && 138 Universe::heap()->total_collections() >= VerifyGCStartAt) { 139 Universe::heap()->prepare_for_verify(); 140 Universe::verify(); // make sure we're starting with a clean slate 141 } 142 143 // All the flags that get adjusted by VM_Version_init and os::init_2 144 // have been set so dump the flags now. 145 if (PrintFlagsFinal) { 146 CommandLineFlags::printFlags(tty, false); 147 } 148 149 return JNI_OK; 150 } 151 152 153 void exit_globals() { 154 static bool destructorsCalled = false; 155 if (!destructorsCalled) { 156 destructorsCalled = true; 157 perfMemory_exit(); 158 if (PrintSafepointStatistics) { 159 // Print the collected safepoint statistics. 160 SafepointSynchronize::print_stat_on_exit(); 161 } 162 if (PrintStringTableStatistics) { 163 SymbolTable::dump(tty); 164 StringTable::dump(tty); 165 } 166 ostream_exit(); 167 } 168 } 169 170 171 static bool _init_completed = false; 172 173 bool is_init_completed() { 174 return _init_completed; 175 } 176 177 178 void set_init_completed() { 179 assert(Universe::is_fully_initialized(), "Should have completed initialization"); 180 _init_completed = true; 181 }