vm_version.cpp revision 1472:c18cbe5936b8
1/* 2 * Copyright (c) 1998, 2009, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25# include "incls/_precompiled.incl" 26# include "incls/_vm_version.cpp.incl" 27 28const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release(); 29const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string(); 30bool Abstract_VM_Version::_supports_cx8 = false; 31unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U; 32 33#ifndef HOTSPOT_RELEASE_VERSION 34 #error HOTSPOT_RELEASE_VERSION must be defined 35#endif 36#ifndef JRE_RELEASE_VERSION 37 #error JRE_RELEASE_VERSION must be defined 38#endif 39#ifndef HOTSPOT_BUILD_TARGET 40 #error HOTSPOT_BUILD_TARGET must be defined 41#endif 42 43#ifdef PRODUCT 44 #define VM_RELEASE HOTSPOT_RELEASE_VERSION 45#else 46 #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET 47#endif 48 49// HOTSPOT_RELEASE_VERSION must follow the release version naming convention 50// <major_ver>.<minor_ver>-b<nn>[-<identifier>][-<debug_target>] 51int Abstract_VM_Version::_vm_major_version = 0; 52int Abstract_VM_Version::_vm_minor_version = 0; 53int Abstract_VM_Version::_vm_build_number = 0; 54bool Abstract_VM_Version::_initialized = false; 55int Abstract_VM_Version::_parallel_worker_threads = 0; 56bool Abstract_VM_Version::_parallel_worker_threads_initialized = false; 57 58void Abstract_VM_Version::initialize() { 59 if (_initialized) { 60 return; 61 } 62 char* vm_version = os::strdup(HOTSPOT_RELEASE_VERSION); 63 64 // Expecting the next vm_version format: 65 // <major_ver>.<minor_ver>-b<nn>[-<identifier>] 66 char* vm_major_ver = vm_version; 67 assert(isdigit(vm_major_ver[0]),"wrong vm major version number"); 68 char* vm_minor_ver = strchr(vm_major_ver, '.'); 69 assert(vm_minor_ver != NULL && isdigit(vm_minor_ver[1]),"wrong vm minor version number"); 70 vm_minor_ver[0] = '\0'; // terminate vm_major_ver 71 vm_minor_ver += 1; 72 char* vm_build_num = strchr(vm_minor_ver, '-'); 73 assert(vm_build_num != NULL && vm_build_num[1] == 'b' && isdigit(vm_build_num[2]),"wrong vm build number"); 74 vm_build_num[0] = '\0'; // terminate vm_minor_ver 75 vm_build_num += 2; 76 77 _vm_major_version = atoi(vm_major_ver); 78 _vm_minor_version = atoi(vm_minor_ver); 79 _vm_build_number = atoi(vm_build_num); 80 81 os::free(vm_version); 82 _initialized = true; 83} 84 85#if defined(_LP64) 86 #define VMLP "64-Bit " 87#else 88 #define VMLP "" 89#endif 90 91#ifdef KERNEL 92 #define VMTYPE "Kernel" 93#else // KERNEL 94#ifdef TIERED 95 #define VMTYPE "Server" 96#else // TIERED 97#ifdef ZERO 98 #define VMTYPE "Zero" 99#else // ZERO 100 #define VMTYPE COMPILER1_PRESENT("Client") \ 101 COMPILER2_PRESENT("Server") 102#endif // ZERO 103#endif // TIERED 104#endif // KERNEL 105 106#ifndef HOTSPOT_VM_DISTRO 107 #error HOTSPOT_VM_DISTRO must be defined 108#endif 109#define VMNAME HOTSPOT_VM_DISTRO " " VMLP VMTYPE " VM" 110 111const char* Abstract_VM_Version::vm_name() { 112 return VMNAME; 113} 114 115 116const char* Abstract_VM_Version::vm_vendor() { 117#ifdef VENDOR 118 return XSTR(VENDOR); 119#else 120 return "Sun Microsystems Inc."; 121#endif 122} 123 124 125const char* Abstract_VM_Version::vm_info_string() { 126 switch (Arguments::mode()) { 127 case Arguments::_int: 128 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode"; 129 case Arguments::_mixed: 130 return UseSharedSpaces ? "mixed mode, sharing" : "mixed mode"; 131 case Arguments::_comp: 132 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode"; 133 }; 134 ShouldNotReachHere(); 135 return ""; 136} 137 138// NOTE: do *not* use stringStream. this function is called by 139// fatal error handler. if the crash is in native thread, 140// stringStream cannot get resource allocated and will SEGV. 141const char* Abstract_VM_Version::vm_release() { 142 return VM_RELEASE; 143} 144 145#define OS LINUX_ONLY("linux") \ 146 WINDOWS_ONLY("windows") \ 147 SOLARIS_ONLY("solaris") 148 149#ifdef ZERO 150#define CPU ZERO_LIBARCH 151#else 152#define CPU IA32_ONLY("x86") \ 153 IA64_ONLY("ia64") \ 154 AMD64_ONLY("amd64") \ 155 SPARC_ONLY("sparc") 156#endif // ZERO 157 158const char *Abstract_VM_Version::vm_platform_string() { 159 return OS "-" CPU; 160} 161 162const char* Abstract_VM_Version::internal_vm_info_string() { 163 #ifndef HOTSPOT_BUILD_USER 164 #define HOTSPOT_BUILD_USER unknown 165 #endif 166 167 #ifndef HOTSPOT_BUILD_COMPILER 168 #ifdef _MSC_VER 169 #if _MSC_VER == 1100 170 #define HOTSPOT_BUILD_COMPILER "MS VC++ 5.0" 171 #elif _MSC_VER == 1200 172 #define HOTSPOT_BUILD_COMPILER "MS VC++ 6.0" 173 #elif _MSC_VER == 1310 174 #define HOTSPOT_BUILD_COMPILER "MS VC++ 7.1 (VS2003)" 175 #elif _MSC_VER == 1400 176 #define HOTSPOT_BUILD_COMPILER "MS VC++ 8.0 (VS2005)" 177 #elif _MSC_VER == 1500 178 #define HOTSPOT_BUILD_COMPILER "MS VC++ 9.0 (VS2008)" 179 #else 180 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER) 181 #endif 182 #elif defined(__SUNPRO_CC) 183 #if __SUNPRO_CC == 0x420 184 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2" 185 #elif __SUNPRO_CC == 0x500 186 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT) 187 #elif __SUNPRO_CC == 0x520 188 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT) 189 #elif __SUNPRO_CC == 0x580 190 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8" 191 #elif __SUNPRO_CC == 0x590 192 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9" 193 #elif __SUNPRO_CC == 0x5100 194 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1" 195 #else 196 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC) 197 #endif 198 #elif defined(__GNUC__) 199 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__ 200 #else 201 #define HOTSPOT_BUILD_COMPILER "unknown compiler" 202 #endif 203 #endif 204 205 206 return VMNAME " (" VM_RELEASE ") for " OS "-" CPU 207 " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__ 208 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER; 209} 210 211unsigned int Abstract_VM_Version::jvm_version() { 212 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) | 213 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) | 214 (Abstract_VM_Version::vm_build_number() & 0xFF); 215} 216 217 218void VM_Version_init() { 219 VM_Version::initialize(); 220 221#ifndef PRODUCT 222 if (PrintMiscellaneous && Verbose) { 223 os::print_cpu_info(tty); 224 } 225#endif 226} 227 228unsigned int Abstract_VM_Version::nof_parallel_worker_threads( 229 unsigned int num, 230 unsigned int den, 231 unsigned int switch_pt) { 232 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { 233 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0"); 234 // For very large machines, there are diminishing returns 235 // for large numbers of worker threads. Instead of 236 // hogging the whole system, use a fraction of the workers for every 237 // processor after the first 8. For example, on a 72 cpu machine 238 // and a chosen fraction of 5/8 239 // use 8 + (72 - 8) * (5/8) == 48 worker threads. 240 unsigned int ncpus = (unsigned int) os::active_processor_count(); 241 return (ncpus <= switch_pt) ? 242 ncpus : 243 (switch_pt + ((ncpus - switch_pt) * num) / den); 244 } else { 245 return ParallelGCThreads; 246 } 247} 248 249unsigned int Abstract_VM_Version::calc_parallel_worker_threads() { 250 return nof_parallel_worker_threads(5, 8, 8); 251} 252 253 254// Does not set the _initialized flag since it is 255// a global flag. 256unsigned int Abstract_VM_Version::parallel_worker_threads() { 257 if (!_parallel_worker_threads_initialized) { 258 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { 259 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads(); 260 } else { 261 _parallel_worker_threads = ParallelGCThreads; 262 } 263 _parallel_worker_threads_initialized = true; 264 } 265 return _parallel_worker_threads; 266} 267