Thu, 27 May 2010 18:01:56 -0700
6916623: Align object to 16 bytes to use Compressed Oops with java heap up to 64Gb
Summary: Added new product ObjectAlignmentInBytes flag to control object alignment.
Reviewed-by: twisti, ysr, iveresov
1 /*
2 * Copyright 1997-2010 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 # include "incls/_precompiled.incl"
26 # include "incls/_init.cpp.incl"
28 // Initialization done by VM thread in vm_init_globals()
29 void check_ThreadShadow();
30 void eventlog_init();
31 void mutex_init();
32 void chunkpool_init();
33 void perfMemory_init();
35 // Initialization done by Java thread in init_globals()
36 void management_init();
37 void vtune_init();
38 void bytecodes_init();
39 void classLoader_init();
40 void codeCache_init();
41 void VM_Version_init();
42 void stubRoutines_init1();
43 jint universe_init(); // dependent on codeCache_init and stubRoutines_init
44 void interpreter_init(); // before any methods loaded
45 void invocationCounter_init(); // before any methods loaded
46 void marksweep_init();
47 void accessFlags_init();
48 void templateTable_init();
49 void InterfaceSupport_init();
50 void universe2_init(); // dependent on codeCache_init and stubRoutines_init
51 void referenceProcessor_init();
52 void jni_handles_init();
53 void vmStructs_init();
55 void vtableStubs_init();
56 void InlineCacheBuffer_init();
57 void compilerOracle_init();
58 void compilationPolicy_init();
61 // Initialization after compiler initialization
62 bool universe_post_init(); // must happen after compiler_init
63 void javaClasses_init(); // must happen after vtable initialization
64 void stubRoutines_init2(); // note: StubRoutines need 2-phase init
66 // Do not disable thread-local-storage, as it is important for some
67 // JNI/JVM/JVMTI functions and signal handlers to work properly
68 // during VM shutdown
69 void perfMemory_exit();
70 void ostream_exit();
72 void vm_init_globals() {
73 check_ThreadShadow();
74 basic_types_init();
75 eventlog_init();
76 mutex_init();
77 chunkpool_init();
78 perfMemory_init();
79 }
82 jint init_globals() {
83 HandleMark hm;
84 management_init();
85 vtune_init();
86 bytecodes_init();
87 classLoader_init();
88 codeCache_init();
89 VM_Version_init();
90 stubRoutines_init1();
91 jint status = universe_init(); // dependent on codeCache_init and stubRoutines_init
92 if (status != JNI_OK)
93 return status;
95 interpreter_init(); // before any methods loaded
96 invocationCounter_init(); // before any methods loaded
97 marksweep_init();
98 accessFlags_init();
99 templateTable_init();
100 InterfaceSupport_init();
101 SharedRuntime::generate_stubs();
102 universe2_init(); // dependent on codeCache_init and stubRoutines_init
103 referenceProcessor_init();
104 jni_handles_init();
105 #ifndef VM_STRUCTS_KERNEL
106 vmStructs_init();
107 #endif // VM_STRUCTS_KERNEL
109 vtableStubs_init();
110 InlineCacheBuffer_init();
111 compilerOracle_init();
112 compilationPolicy_init();
113 VMRegImpl::set_regName();
115 if (!universe_post_init()) {
116 return JNI_ERR;
117 }
118 javaClasses_init(); // must happen after vtable initialization
119 stubRoutines_init2(); // note: StubRoutines need 2-phase init
121 // Generate MethodHandles adapters.
122 MethodHandles::generate_adapters();
124 // Although we'd like to, we can't easily do a heap verify
125 // here because the main thread isn't yet a JavaThread, so
126 // its TLAB may not be made parseable from the usual interfaces.
127 if (VerifyBeforeGC && !UseTLAB &&
128 Universe::heap()->total_collections() >= VerifyGCStartAt) {
129 Universe::heap()->prepare_for_verify();
130 Universe::verify(); // make sure we're starting with a clean slate
131 }
133 return JNI_OK;
134 }
137 void exit_globals() {
138 static bool destructorsCalled = false;
139 if (!destructorsCalled) {
140 destructorsCalled = true;
141 perfMemory_exit();
142 if (PrintSafepointStatistics) {
143 // Print the collected safepoint statistics.
144 SafepointSynchronize::print_stat_on_exit();
145 }
146 ostream_exit();
147 }
148 }
151 static bool _init_completed = false;
153 bool is_init_completed() {
154 return _init_completed;
155 }
158 void set_init_completed() {
159 _init_completed = true;
160 }