Fri, 06 Dec 2019 12:42:29 +0100
8235243: handle VS2017 15.9 and VS2019 in abstract_vm_version
8235325: build failure on Linux after 8235243
Reviewed-by: dholmes, mdoerr
duke@435 | 1 | /* |
kevinw@8729 | 2 | * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
stefank@2314 | 25 | #ifndef SHARE_VM_RUNTIME_VM_VERSION_HPP |
stefank@2314 | 26 | #define SHARE_VM_RUNTIME_VM_VERSION_HPP |
stefank@2314 | 27 | |
stefank@2314 | 28 | #include "memory/allocation.hpp" |
stefank@2314 | 29 | #include "utilities/ostream.hpp" |
stefank@2314 | 30 | |
duke@435 | 31 | // VM_Version provides information about the VM. |
duke@435 | 32 | |
duke@435 | 33 | class Abstract_VM_Version: AllStatic { |
duke@435 | 34 | protected: |
duke@435 | 35 | friend class VMStructs; |
duke@435 | 36 | static const char* _s_vm_release; |
duke@435 | 37 | static const char* _s_internal_vm_info_string; |
duke@435 | 38 | // These are set by machine-dependent initializations |
duke@435 | 39 | static bool _supports_cx8; |
roland@4106 | 40 | static bool _supports_atomic_getset4; |
roland@4106 | 41 | static bool _supports_atomic_getset8; |
roland@4106 | 42 | static bool _supports_atomic_getadd4; |
roland@4106 | 43 | static bool _supports_atomic_getadd8; |
duke@435 | 44 | static unsigned int _logical_processors_per_package; |
kevinw@8729 | 45 | static unsigned int _L1_data_cache_line_size; |
duke@435 | 46 | static int _vm_major_version; |
duke@435 | 47 | static int _vm_minor_version; |
duke@435 | 48 | static int _vm_build_number; |
duke@435 | 49 | static bool _initialized; |
jmasa@445 | 50 | static int _parallel_worker_threads; |
jmasa@445 | 51 | static bool _parallel_worker_threads_initialized; |
kvn@3052 | 52 | static int _reserve_for_allocation_prefetch; |
jmasa@445 | 53 | |
jmasa@445 | 54 | static unsigned int nof_parallel_worker_threads(unsigned int num, |
jmasa@445 | 55 | unsigned int dem, |
jmasa@445 | 56 | unsigned int switch_pt); |
duke@435 | 57 | public: |
poonam@8329 | 58 | // Called as part of the runtime services initialization which is |
poonam@8329 | 59 | // called from the management module initialization (via init_globals()) |
poonam@8329 | 60 | // after argument parsing and attaching of the main thread has |
poonam@8329 | 61 | // occurred. Examines a variety of the hardware capabilities of |
poonam@8329 | 62 | // the platform to determine which features can be used to execute the |
poonam@8329 | 63 | // program. |
duke@435 | 64 | static void initialize(); |
duke@435 | 65 | |
bpittore@8046 | 66 | // This allows for early initialization of VM_Version information |
bpittore@8046 | 67 | // that may be needed later in the initialization sequence but before |
bpittore@8046 | 68 | // full VM_Version initialization is possible. It can not depend on any |
bpittore@8046 | 69 | // other part of the VM being initialized when called. Platforms that |
bpittore@8046 | 70 | // need to specialize this define VM_Version::early_initialize(). |
bpittore@8046 | 71 | static void early_initialize() { } |
bpittore@8046 | 72 | |
poonam@8329 | 73 | // Called to initialize VM variables needing initialization |
poonam@8329 | 74 | // after command line parsing. Platforms that need to specialize |
poonam@8329 | 75 | // this should define VM_Version::init_before_ergo(). |
poonam@8329 | 76 | static void init_before_ergo() {} |
poonam@8329 | 77 | |
duke@435 | 78 | // Name |
duke@435 | 79 | static const char* vm_name(); |
duke@435 | 80 | // Vendor |
duke@435 | 81 | static const char* vm_vendor(); |
duke@435 | 82 | // VM version information string printed by launcher (java -version) |
duke@435 | 83 | static const char* vm_info_string(); |
duke@435 | 84 | static const char* vm_release(); |
duke@435 | 85 | static const char* vm_platform_string(); |
kamg@2515 | 86 | static const char* vm_build_user(); |
duke@435 | 87 | |
duke@435 | 88 | static int vm_major_version() { assert(_initialized, "not initialized"); return _vm_major_version; } |
duke@435 | 89 | static int vm_minor_version() { assert(_initialized, "not initialized"); return _vm_minor_version; } |
duke@435 | 90 | static int vm_build_number() { assert(_initialized, "not initialized"); return _vm_build_number; } |
duke@435 | 91 | |
duke@435 | 92 | // Gets the jvm_version_info.jvm_version defined in jvm.h |
duke@435 | 93 | static unsigned int jvm_version(); |
duke@435 | 94 | |
duke@435 | 95 | // Internal version providing additional build information |
duke@435 | 96 | static const char* internal_vm_info_string(); |
ohrstrom@3517 | 97 | static const char* jre_release_version(); |
duke@435 | 98 | |
duke@435 | 99 | // does HW support an 8-byte compare-exchange operation? |
bpittore@5765 | 100 | static bool supports_cx8() { |
apetushkov@9858 | 101 | assert(_initialized, "not initialized"); |
bpittore@5765 | 102 | #ifdef SUPPORTS_NATIVE_CX8 |
bpittore@5765 | 103 | return true; |
bpittore@5765 | 104 | #else |
bpittore@5765 | 105 | return _supports_cx8; |
bpittore@5765 | 106 | #endif |
bpittore@5765 | 107 | } |
roland@4106 | 108 | // does HW support atomic get-and-set or atomic get-and-add? Used |
roland@4106 | 109 | // to guide intrinsification decisions for Unsafe atomic ops |
apetushkov@9858 | 110 | static bool supports_atomic_getset4() { assert(_initialized, "not initialized"); return _supports_atomic_getset4;} |
apetushkov@9858 | 111 | static bool supports_atomic_getset8() { assert(_initialized, "not initialized"); return _supports_atomic_getset8;} |
apetushkov@9858 | 112 | static bool supports_atomic_getadd4() { assert(_initialized, "not initialized"); return _supports_atomic_getadd4;} |
apetushkov@9858 | 113 | static bool supports_atomic_getadd8() { assert(_initialized, "not initialized"); return _supports_atomic_getadd8;} |
roland@4106 | 114 | |
duke@435 | 115 | static unsigned int logical_processors_per_package() { |
duke@435 | 116 | return _logical_processors_per_package; |
duke@435 | 117 | } |
duke@435 | 118 | |
kevinw@8729 | 119 | static unsigned int L1_data_cache_line_size() { |
kevinw@8729 | 120 | return _L1_data_cache_line_size; |
kevinw@8729 | 121 | } |
kevinw@8729 | 122 | |
kvn@3052 | 123 | // Need a space at the end of TLAB for prefetch instructions |
kvn@3052 | 124 | // which may fault when accessing memory outside of heap. |
kvn@3052 | 125 | static int reserve_for_allocation_prefetch() { |
kvn@3052 | 126 | return _reserve_for_allocation_prefetch; |
kvn@3052 | 127 | } |
kvn@3052 | 128 | |
bobv@2036 | 129 | // ARCH specific policy for the BiasedLocking |
bobv@2036 | 130 | static bool use_biased_locking() { return true; } |
bobv@2036 | 131 | |
duke@435 | 132 | // Number of page sizes efficiently supported by the hardware. Most chips now |
duke@435 | 133 | // support two sizes, thus this default implementation. Processor-specific |
duke@435 | 134 | // subclasses should define new versions to hide this one as needed. Note |
duke@435 | 135 | // that the O/S may support more sizes, but at most this many are used. |
duke@435 | 136 | static uint page_size_count() { return 2; } |
jmasa@445 | 137 | |
jmasa@445 | 138 | // Returns the number of parallel threads to be used for VM |
jmasa@445 | 139 | // work. If that number has not been calculated, do so and |
jmasa@445 | 140 | // save it. Returns ParallelGCThreads if it is set on the |
jmasa@445 | 141 | // command line. |
jmasa@445 | 142 | static unsigned int parallel_worker_threads(); |
jmasa@445 | 143 | // Calculates and returns the number of parallel threads. May |
jmasa@445 | 144 | // be VM version specific. |
jmasa@445 | 145 | static unsigned int calc_parallel_worker_threads(); |
duke@435 | 146 | }; |
stefank@2314 | 147 | |
stefank@2314 | 148 | #endif // SHARE_VM_RUNTIME_VM_VERSION_HPP |