Mercurial > hg > truffle
annotate src/share/vm/runtime/vm_version.hpp @ 710:e5b0439ef4ae
6655638: dynamic languages need method handles
Summary: initial implementation, with known omissions (x86/64, sparc, compiler optim., c-oops, C++ interp.)
Reviewed-by: kvn, twisti, never
author | jrose |
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date | Wed, 08 Apr 2009 10:56:49 -0700 |
parents | d1605aabd0a1 |
children | c18cbe5936b8 |
rev | line source |
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0 | 1 /* |
196 | 2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved. |
0 | 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; | |
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39 static int _parallel_worker_threads; |
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40 static bool _parallel_worker_threads_initialized; |
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41 |
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42 static unsigned int nof_parallel_worker_threads(unsigned int num, |
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43 unsigned int dem, |
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44 unsigned int switch_pt); |
0 | 45 public: |
46 static void initialize(); | |
47 | |
48 // Name | |
49 static const char* vm_name(); | |
50 // Vendor | |
51 static const char* vm_vendor(); | |
52 // VM version information string printed by launcher (java -version) | |
53 static const char* vm_info_string(); | |
54 static const char* vm_release(); | |
55 static const char* vm_platform_string(); | |
56 | |
57 static int vm_major_version() { assert(_initialized, "not initialized"); return _vm_major_version; } | |
58 static int vm_minor_version() { assert(_initialized, "not initialized"); return _vm_minor_version; } | |
59 static int vm_build_number() { assert(_initialized, "not initialized"); return _vm_build_number; } | |
60 | |
61 // Gets the jvm_version_info.jvm_version defined in jvm.h | |
62 static unsigned int jvm_version(); | |
63 | |
64 // Internal version providing additional build information | |
65 static const char* internal_vm_info_string(); | |
66 | |
67 // does HW support an 8-byte compare-exchange operation? | |
68 static bool supports_cx8() {return _supports_cx8;} | |
69 static unsigned int logical_processors_per_package() { | |
70 return _logical_processors_per_package; | |
71 } | |
72 | |
73 // Number of page sizes efficiently supported by the hardware. Most chips now | |
74 // support two sizes, thus this default implementation. Processor-specific | |
75 // subclasses should define new versions to hide this one as needed. Note | |
76 // that the O/S may support more sizes, but at most this many are used. | |
77 static uint page_size_count() { return 2; } | |
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78 |
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79 // Returns the number of parallel threads to be used for VM |
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80 // work. If that number has not been calculated, do so and |
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81 // save it. Returns ParallelGCThreads if it is set on the |
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82 // command line. |
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83 static unsigned int parallel_worker_threads(); |
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84 // Calculates and returns the number of parallel threads. May |
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85 // be VM version specific. |
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86 static unsigned int calc_parallel_worker_threads(); |
0 | 87 }; |