1
|
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 |
};
|