init.cpp revision 3064:aa3d708d67c4 
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 "code/icBuffer.hpp"
27#include "gc_interface/collectedHeap.hpp"
28#include "interpreter/bytecodes.hpp"
29#include "memory/universe.hpp"
30#include "prims/methodHandles.hpp"
31#include "runtime/handles.inline.hpp"
32#include "runtime/icache.hpp"
33#include "runtime/init.hpp"
34#include "runtime/safepoint.hpp"
35#include "runtime/sharedRuntime.hpp"
36
37// Initialization done by VM thread in vm_init_globals()
38void check_ThreadShadow();
39void eventlog_init();
40void mutex_init();
41void chunkpool_init();
42void perfMemory_init();
43
44// Initialization done by Java thread in init_globals()
45void management_init();
46void bytecodes_init();
47void classLoader_init();
48void codeCache_init();
49void VM_Version_init();
50void os_init_globals();        // depends on VM_Version_init, before universe_init
51void stubRoutines_init1();
52jint universe_init();          // depends on codeCache_init and stubRoutines_init
53void interpreter_init();       // before any methods loaded
54void invocationCounter_init(); // before any methods loaded
55void marksweep_init();
56void accessFlags_init();
57void templateTable_init();
58void InterfaceSupport_init();
59void universe2_init();  // dependent on codeCache_init and stubRoutines_init, loads primordial classes
60void referenceProcessor_init();
61void jni_handles_init();
62void vmStructs_init();
63
64void vtableStubs_init();
65void InlineCacheBuffer_init();
66void compilerOracle_init();
67void compilationPolicy_init();
68void compileBroker_init();
69
70// Initialization after compiler initialization
71bool universe_post_init();  // must happen after compiler_init
72void javaClasses_init();  // must happen after vtable initialization
73void stubRoutines_init2(); // note: StubRoutines need 2-phase init
74
75// Do not disable thread-local-storage, as it is important for some
76// JNI/JVM/JVMTI functions and signal handlers to work properly
77// during VM shutdown
78void perfMemory_exit();
79void ostream_exit();
80
81void vm_init_globals() {
82  check_ThreadShadow();
83  basic_types_init();
84  eventlog_init();
85  mutex_init();
86  chunkpool_init();
87  perfMemory_init();
88}
89
90
91jint init_globals() {
92  HandleMark hm;
93  management_init();
94  bytecodes_init();
95  classLoader_init();
96  codeCache_init();
97  VM_Version_init();
98  os_init_globals();
99  stubRoutines_init1();
100  jint status = universe_init();  // dependent on codeCache_init and
101                                  // stubRoutines_init1
102  if (status != JNI_OK)
103    return status;
104
105  interpreter_init();  // before any methods loaded
106  invocationCounter_init();  // before any methods loaded
107  marksweep_init();
108  accessFlags_init();
109  templateTable_init();
110  InterfaceSupport_init();
111  SharedRuntime::generate_stubs();
112  universe2_init();  // dependent on codeCache_init and stubRoutines_init1
113  referenceProcessor_init();
114  jni_handles_init();
115#ifndef VM_STRUCTS_KERNEL
116  vmStructs_init();
117#endif // VM_STRUCTS_KERNEL
118
119  vtableStubs_init();
120  InlineCacheBuffer_init();
121  compilerOracle_init();
122  compilationPolicy_init();
123  compileBroker_init();
124  VMRegImpl::set_regName();
125
126  if (!universe_post_init()) {
127    return JNI_ERR;
128  }
129  javaClasses_init();   // must happen after vtable initialization
130  stubRoutines_init2(); // note: StubRoutines need 2-phase init
131
132  // Although we'd like to, we can't easily do a heap verify
133  // here because the main thread isn't yet a JavaThread, so
134  // its TLAB may not be made parseable from the usual interfaces.
135  if (VerifyBeforeGC && !UseTLAB &&
136      Universe::heap()->total_collections() >= VerifyGCStartAt) {
137    Universe::heap()->prepare_for_verify();
138    Universe::verify();   // make sure we're starting with a clean slate
139  }
140
141  // All the flags that get adjusted by VM_Version_init and os::init_2
142  // have been set so dump the flags now.
143  if (PrintFlagsFinal) {
144    CommandLineFlags::printFlags(tty, false);
145  }
146
147  return JNI_OK;
148}
149
150
151void exit_globals() {
152  static bool destructorsCalled = false;
153  if (!destructorsCalled) {
154    destructorsCalled = true;
155    perfMemory_exit();
156    if (PrintSafepointStatistics) {
157      // Print the collected safepoint statistics.
158      SafepointSynchronize::print_stat_on_exit();
159    }
160    ostream_exit();
161  }
162}
163
164
165static bool _init_completed = false;
166
167bool is_init_completed() {
168  return _init_completed;
169}
170
171
172void set_init_completed() {
173  assert(Universe::is_fully_initialized(), "Should have completed initialization");
174  _init_completed = true;
175}
176