|
1 /* |
|
2 * Copyright 1997-2007 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 */ |
|
24 |
|
25 // VM_Version provides information about the VM. |
|
26 |
|
27 class Abstract_VM_Version: AllStatic { |
|
28 protected: |
|
29 friend class VMStructs; |
|
30 static const char* _s_vm_release; |
|
31 static const char* _s_internal_vm_info_string; |
|
32 // These are set by machine-dependent initializations |
|
33 static bool _supports_cx8; |
|
34 static unsigned int _logical_processors_per_package; |
|
35 static int _vm_major_version; |
|
36 static int _vm_minor_version; |
|
37 static int _vm_build_number; |
|
38 static bool _initialized; |
|
39 public: |
|
40 static void initialize(); |
|
41 |
|
42 // Name |
|
43 static const char* vm_name(); |
|
44 // Vendor |
|
45 static const char* vm_vendor(); |
|
46 // VM version information string printed by launcher (java -version) |
|
47 static const char* vm_info_string(); |
|
48 static const char* vm_release(); |
|
49 static const char* vm_platform_string(); |
|
50 |
|
51 static int vm_major_version() { assert(_initialized, "not initialized"); return _vm_major_version; } |
|
52 static int vm_minor_version() { assert(_initialized, "not initialized"); return _vm_minor_version; } |
|
53 static int vm_build_number() { assert(_initialized, "not initialized"); return _vm_build_number; } |
|
54 |
|
55 // Gets the jvm_version_info.jvm_version defined in jvm.h |
|
56 static unsigned int jvm_version(); |
|
57 |
|
58 // Internal version providing additional build information |
|
59 static const char* internal_vm_info_string(); |
|
60 |
|
61 // does HW support an 8-byte compare-exchange operation? |
|
62 static bool supports_cx8() {return _supports_cx8;} |
|
63 static unsigned int logical_processors_per_package() { |
|
64 return _logical_processors_per_package; |
|
65 } |
|
66 |
|
67 // Number of page sizes efficiently supported by the hardware. Most chips now |
|
68 // support two sizes, thus this default implementation. Processor-specific |
|
69 // subclasses should define new versions to hide this one as needed. Note |
|
70 // that the O/S may support more sizes, but at most this many are used. |
|
71 static uint page_size_count() { return 2; } |
|
72 }; |