Mercurial > hg > truffle
comparison src/share/vm/runtime/vm_version.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | 28372612af5e |
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-1:000000000000 | 0:a61af66fc99e |
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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 }; |