init.cpp revision 3602:da91efe96a93 
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.
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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()
39void check_ThreadShadow();
40void eventlog_init();
41void mutex_init();
42void chunkpool_init();
43void perfMemory_init();
44
45// Initialization done by Java thread in init_globals()
46void management_init();
47void bytecodes_init();
48void classLoader_init();
49void codeCache_init();
50void VM_Version_init();
51void os_init_globals();        // depends on VM_Version_init, before universe_init
52void stubRoutines_init1();
53jint universe_init();          // depends on codeCache_init and stubRoutines_init
54void interpreter_init();       // before any methods loaded
55void invocationCounter_init(); // before any methods loaded
56void marksweep_init();
57void accessFlags_init();
58void templateTable_init();
59void InterfaceSupport_init();
60void universe2_init();  // dependent on codeCache_init and stubRoutines_init, loads primordial classes
61void referenceProcessor_init();
62void jni_handles_init();
63void vmStructs_init();
64
65void vtableStubs_init();
66void InlineCacheBuffer_init();
67void compilerOracle_init();
68void compilationPolicy_init();
69void compileBroker_init();
70
71// Initialization after compiler initialization
72bool universe_post_init();  // must happen after compiler_init
73void javaClasses_init();  // must happen after vtable initialization
74void 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
79void perfMemory_exit();
80void ostream_exit();
81
82void 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
92jint 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
153void 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
171static bool _init_completed = false;
172
173bool is_init_completed() {
174  return _init_completed;
175}
176
177
178void set_init_completed() {
179  assert(Universe::is_fully_initialized(), "Should have completed initialization");
180  _init_completed = true;
181}
182