Mercurial > hg > truffle
annotate src/share/vm/runtime/vm_version.hpp @ 4890:c77d473e71f7
7132779: build-infra merge: Enable ccache to work for most developer builds.
Summary: When a build number is not specified, the JRE_RELEASE_VERSION define contains a date and timestamp. Thus ccache cannot cache the object files for longer than a minute since the define is passed to the compilation of all source files. This change passes JRE_RELEASE_VERSION only to vm_version.cpp and adds a function jre_release_version() to Abstract_VM_Version. This allows all other source files to be ccached.
Reviewed-by: ohair, rottenha
Contributed-by: fredrik.ohrstrom@oracle.com
| author | ohrstrom |
|---|---|
| date | Tue, 31 Jan 2012 13:12:39 +0100 |
| parents | 1af104d6cf99 |
| children | 7eca5de9e0b6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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; | |
| 40 static unsigned int _logical_processors_per_package; | |
| 41 static int _vm_major_version; | |
| 42 static int _vm_minor_version; | |
| 43 static int _vm_build_number; | |
| 44 static bool _initialized; | |
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45 static int _parallel_worker_threads; |
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46 static bool _parallel_worker_threads_initialized; |
| 3854 | 47 static int _reserve_for_allocation_prefetch; |
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48 |
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49 static unsigned int nof_parallel_worker_threads(unsigned int num, |
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50 unsigned int dem, |
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51 unsigned int switch_pt); |
| 0 | 52 public: |
| 53 static void initialize(); | |
| 54 | |
| 55 // Name | |
| 56 static const char* vm_name(); | |
| 57 // Vendor | |
| 58 static const char* vm_vendor(); | |
| 59 // VM version information string printed by launcher (java -version) | |
| 60 static const char* vm_info_string(); | |
| 61 static const char* vm_release(); | |
| 62 static const char* vm_platform_string(); | |
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63 static const char* vm_build_user(); |
| 0 | 64 |
| 65 static int vm_major_version() { assert(_initialized, "not initialized"); return _vm_major_version; } | |
| 66 static int vm_minor_version() { assert(_initialized, "not initialized"); return _vm_minor_version; } | |
| 67 static int vm_build_number() { assert(_initialized, "not initialized"); return _vm_build_number; } | |
| 68 | |
| 69 // Gets the jvm_version_info.jvm_version defined in jvm.h | |
| 70 static unsigned int jvm_version(); | |
| 71 | |
| 72 // Internal version providing additional build information | |
| 73 static const char* internal_vm_info_string(); | |
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74 static const char* jre_release_version(); |
| 0 | 75 |
| 76 // does HW support an 8-byte compare-exchange operation? | |
| 77 static bool supports_cx8() {return _supports_cx8;} | |
| 78 static unsigned int logical_processors_per_package() { | |
| 79 return _logical_processors_per_package; | |
| 80 } | |
| 81 | |
| 3854 | 82 // Need a space at the end of TLAB for prefetch instructions |
| 83 // which may fault when accessing memory outside of heap. | |
| 84 static int reserve_for_allocation_prefetch() { | |
| 85 return _reserve_for_allocation_prefetch; | |
| 86 } | |
| 87 | |
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88 // ARCH specific policy for the BiasedLocking |
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89 static bool use_biased_locking() { return true; } |
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90 |
| 0 | 91 // Number of page sizes efficiently supported by the hardware. Most chips now |
| 92 // support two sizes, thus this default implementation. Processor-specific | |
| 93 // subclasses should define new versions to hide this one as needed. Note | |
| 94 // that the O/S may support more sizes, but at most this many are used. | |
| 95 static uint page_size_count() { return 2; } | |
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96 |
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97 // Returns the number of parallel threads to be used for VM |
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98 // work. If that number has not been calculated, do so and |
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99 // save it. Returns ParallelGCThreads if it is set on the |
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100 // command line. |
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101 static unsigned int parallel_worker_threads(); |
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102 // Calculates and returns the number of parallel threads. May |
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103 // be VM version specific. |
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104 static unsigned int calc_parallel_worker_threads(); |
| 0 | 105 }; |
| 1972 | 106 |
| 107 #endif // SHARE_VM_RUNTIME_VM_VERSION_HPP |