Mercurial > hg > truffle

comparison src/share/vm/runtime/vm_version.hpp @ 0:a61af66fc99e jdk7-b24

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children 28372612af5e
comparison
equal deleted inserted replaced
-1:000000000000 0:a61af66fc99e
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 };