Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/vm_version.hpp @ 18096:ca6d25be853b jdk8u25-b13
8044269: Analysis of archive files.
Summary: Add checksum verification.
Reviewed-by: iklam, dholmes, mschoene
| author | jiangli |
|---|---|
| date | Tue, 12 Aug 2014 17:46:16 -0400 |
| parents | 55fb97c4c58d |
| children | 4ca6dc0799b6 |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_RUNTIME_VM_VERSION_HPP |
| 26 #define SHARE_VM_RUNTIME_VM_VERSION_HPP | |
| 27 | |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "utilities/ostream.hpp" | |
| 30 | |
| 0 | 31 // VM_Version provides information about the VM. |
| 32 | |
| 33 class Abstract_VM_Version: AllStatic { | |
| 34 protected: | |
| 35 friend class VMStructs; | |
| 36 static const char* _s_vm_release; | |
| 37 static const char* _s_internal_vm_info_string; | |
| 38 // These are set by machine-dependent initializations | |
| 39 static bool _supports_cx8; | |
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40 static bool _supports_atomic_getset4; |
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41 static bool _supports_atomic_getset8; |
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42 static bool _supports_atomic_getadd4; |
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43 static bool _supports_atomic_getadd8; |
| 0 | 44 static unsigned int _logical_processors_per_package; |
| 45 static int _vm_major_version; | |
| 46 static int _vm_minor_version; | |
| 47 static int _vm_build_number; | |
| 48 static bool _initialized; | |
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49 static int _parallel_worker_threads; |
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50 static bool _parallel_worker_threads_initialized; |
| 3854 | 51 static int _reserve_for_allocation_prefetch; |
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52 |
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53 static unsigned int nof_parallel_worker_threads(unsigned int num, |
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54 unsigned int dem, |
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55 unsigned int switch_pt); |
| 0 | 56 public: |
| 57 static void initialize(); | |
| 58 | |
| 59 // Name | |
| 60 static const char* vm_name(); | |
| 61 // Vendor | |
| 62 static const char* vm_vendor(); | |
| 63 // VM version information string printed by launcher (java -version) | |
| 64 static const char* vm_info_string(); | |
| 65 static const char* vm_release(); | |
| 66 static const char* vm_platform_string(); | |
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67 static const char* vm_build_user(); |
| 0 | 68 |
| 69 static int vm_major_version() { assert(_initialized, "not initialized"); return _vm_major_version; } | |
| 70 static int vm_minor_version() { assert(_initialized, "not initialized"); return _vm_minor_version; } | |
| 71 static int vm_build_number() { assert(_initialized, "not initialized"); return _vm_build_number; } | |
| 72 | |
| 73 // Gets the jvm_version_info.jvm_version defined in jvm.h | |
| 74 static unsigned int jvm_version(); | |
| 75 | |
| 76 // Internal version providing additional build information | |
| 77 static const char* internal_vm_info_string(); | |
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78 static const char* jre_release_version(); |
| 0 | 79 |
| 80 // does HW support an 8-byte compare-exchange operation? | |
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81 static bool supports_cx8() { |
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82 #ifdef SUPPORTS_NATIVE_CX8 |
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83 return true; |
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84 #else |
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85 return _supports_cx8; |
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86 #endif |
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87 } |
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88 // does HW support atomic get-and-set or atomic get-and-add? Used |
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89 // to guide intrinsification decisions for Unsafe atomic ops |
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90 static bool supports_atomic_getset4() {return _supports_atomic_getset4;} |
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91 static bool supports_atomic_getset8() {return _supports_atomic_getset8;} |
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92 static bool supports_atomic_getadd4() {return _supports_atomic_getadd4;} |
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93 static bool supports_atomic_getadd8() {return _supports_atomic_getadd8;} |
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94 |
| 0 | 95 static unsigned int logical_processors_per_package() { |
| 96 return _logical_processors_per_package; | |
| 97 } | |
| 98 | |
| 3854 | 99 // Need a space at the end of TLAB for prefetch instructions |
| 100 // which may fault when accessing memory outside of heap. | |
| 101 static int reserve_for_allocation_prefetch() { | |
| 102 return _reserve_for_allocation_prefetch; | |
| 103 } | |
| 104 | |
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105 // ARCH specific policy for the BiasedLocking |
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106 static bool use_biased_locking() { return true; } |
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107 |
| 0 | 108 // Number of page sizes efficiently supported by the hardware. Most chips now |
| 109 // support two sizes, thus this default implementation. Processor-specific | |
| 110 // subclasses should define new versions to hide this one as needed. Note | |
| 111 // that the O/S may support more sizes, but at most this many are used. | |
| 112 static uint page_size_count() { return 2; } | |
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113 |
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114 // Returns the number of parallel threads to be used for VM |
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115 // work. If that number has not been calculated, do so and |
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116 // save it. Returns ParallelGCThreads if it is set on the |
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117 // command line. |
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118 static unsigned int parallel_worker_threads(); |
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119 // Calculates and returns the number of parallel threads. May |
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120 // be VM version specific. |
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121 static unsigned int calc_parallel_worker_threads(); |
| 0 | 122 }; |
| 1972 | 123 |
| 124 #endif // SHARE_VM_RUNTIME_VM_VERSION_HPP |