1 /* 2 * Copyright (c) 1998, 2011, 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 "precompiled.hpp" 26 #include "memory/universe.hpp" 27 #include "oops/oop.inline.hpp" 28 #include "runtime/arguments.hpp" 29 #ifdef TARGET_ARCH_x86 30 # include "vm_version_x86.hpp" 31 #endif 32 #ifdef TARGET_ARCH_sparc 33 # include "vm_version_sparc.hpp" 34 #endif 35 #ifdef TARGET_ARCH_zero 36 # include "vm_version_zero.hpp" 37 #endif 38 #ifdef TARGET_ARCH_arm 39 # include "vm_version_arm.hpp" 40 #endif 41 #ifdef TARGET_ARCH_ppc 42 # include "vm_version_ppc.hpp" 43 #endif 44 45 const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release(); 46 const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string(); 47 bool Abstract_VM_Version::_supports_cx8 = false; 48 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U; 49 int Abstract_VM_Version::_reserve_for_allocation_prefetch = 0; 50 51 #ifndef HOTSPOT_RELEASE_VERSION 52 #error HOTSPOT_RELEASE_VERSION must be defined 53 #endif 54 #ifndef JRE_RELEASE_VERSION 55 #error JRE_RELEASE_VERSION must be defined 56 #endif 57 #ifndef HOTSPOT_BUILD_TARGET 58 #error HOTSPOT_BUILD_TARGET must be defined 59 #endif 60 61 #ifdef PRODUCT 62 #define VM_RELEASE HOTSPOT_RELEASE_VERSION 63 #else 64 #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET 65 #endif 66 67 // HOTSPOT_RELEASE_VERSION must follow the release version naming convention 68 // <major_ver>.<minor_ver>-b<nn>[-<identifier>][-<debug_target>] 69 int Abstract_VM_Version::_vm_major_version = 0; 70 int Abstract_VM_Version::_vm_minor_version = 0; 71 int Abstract_VM_Version::_vm_build_number = 0; 72 bool Abstract_VM_Version::_initialized = false; 73 int Abstract_VM_Version::_parallel_worker_threads = 0; 74 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false; 75 76 void Abstract_VM_Version::initialize() { 77 if (_initialized) { 78 return; 79 } 80 char* vm_version = os::strdup(HOTSPOT_RELEASE_VERSION); 81 82 // Expecting the next vm_version format: 83 // <major_ver>.<minor_ver>-b<nn>[-<identifier>] 84 char* vm_major_ver = vm_version; 85 assert(isdigit(vm_major_ver[0]),"wrong vm major version number"); 86 char* vm_minor_ver = strchr(vm_major_ver, '.'); 87 assert(vm_minor_ver != NULL && isdigit(vm_minor_ver[1]),"wrong vm minor version number"); 88 vm_minor_ver[0] = '\0'; // terminate vm_major_ver 89 vm_minor_ver += 1; 90 char* vm_build_num = strchr(vm_minor_ver, '-'); 91 assert(vm_build_num != NULL && vm_build_num[1] == 'b' && isdigit(vm_build_num[2]),"wrong vm build number"); 92 vm_build_num[0] = '\0'; // terminate vm_minor_ver 93 vm_build_num += 2; 94 95 _vm_major_version = atoi(vm_major_ver); 96 _vm_minor_version = atoi(vm_minor_ver); 97 _vm_build_number = atoi(vm_build_num); 98 99 os::free(vm_version); 100 _initialized = true; 101 } 102 103 #if defined(_LP64) 104 #define VMLP "64-Bit " 105 #else 106 #define VMLP "" 107 #endif 108 109 #ifdef KERNEL 110 #define VMTYPE "Kernel" 111 #else // KERNEL 112 #ifdef TIERED 113 #define VMTYPE "Server" 114 #else // TIERED 115 #ifdef ZERO 116 #ifdef SHARK 117 #define VMTYPE "Shark" 118 #else // SHARK 119 #define VMTYPE "Zero" 120 #endif // SHARK 121 #else // ZERO 122 #define VMTYPE COMPILER1_PRESENT("Client") \ 123 COMPILER2_PRESENT("Server") 124 #endif // ZERO 125 #endif // TIERED 126 #endif // KERNEL 127 128 #ifndef HOTSPOT_VM_DISTRO 129 #error HOTSPOT_VM_DISTRO must be defined 130 #endif 131 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP VMTYPE " VM" 132 133 const char* Abstract_VM_Version::vm_name() { 134 return VMNAME; 135 } 136 137 138 const char* Abstract_VM_Version::vm_vendor() { 139 #ifdef VENDOR 140 return XSTR(VENDOR); 141 #else 142 return JDK_Version::is_gte_jdk17x_version() ? 143 "Oracle Corporation" : "Sun Microsystems Inc."; 144 #endif 145 } 146 147 148 const char* Abstract_VM_Version::vm_info_string() { 149 switch (Arguments::mode()) { 150 case Arguments::_int: 151 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode"; 152 case Arguments::_mixed: 153 return UseSharedSpaces ? "mixed mode, sharing" : "mixed mode"; 154 case Arguments::_comp: 155 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode"; 156 }; 157 ShouldNotReachHere(); 158 return ""; 159 } 160 161 // NOTE: do *not* use stringStream. this function is called by 162 // fatal error handler. if the crash is in native thread, 163 // stringStream cannot get resource allocated and will SEGV. 164 const char* Abstract_VM_Version::vm_release() { 165 return VM_RELEASE; 166 } 167 168 #define OS LINUX_ONLY("linux") \ 169 WINDOWS_ONLY("windows") \ 170 SOLARIS_ONLY("solaris") 171 172 #ifdef ZERO 173 #define CPU ZERO_LIBARCH 174 #else 175 #define CPU IA32_ONLY("x86") \ 176 IA64_ONLY("ia64") \ 177 AMD64_ONLY("amd64") \ 178 ARM_ONLY("arm") \ 179 PPC_ONLY("ppc") \ 180 SPARC_ONLY("sparc") 181 #endif // ZERO 182 183 const char *Abstract_VM_Version::vm_platform_string() { 184 return OS "-" CPU; 185 } 186 187 const char* Abstract_VM_Version::internal_vm_info_string() { 188 #ifndef HOTSPOT_BUILD_USER 189 #define HOTSPOT_BUILD_USER unknown 190 #endif 191 192 #ifndef HOTSPOT_BUILD_COMPILER 193 #ifdef _MSC_VER 194 #if _MSC_VER == 1100 195 #define HOTSPOT_BUILD_COMPILER "MS VC++ 5.0" 196 #elif _MSC_VER == 1200 197 #define HOTSPOT_BUILD_COMPILER "MS VC++ 6.0" 198 #elif _MSC_VER == 1310 199 #define HOTSPOT_BUILD_COMPILER "MS VC++ 7.1 (VS2003)" 200 #elif _MSC_VER == 1400 201 #define HOTSPOT_BUILD_COMPILER "MS VC++ 8.0 (VS2005)" 202 #elif _MSC_VER == 1500 203 #define HOTSPOT_BUILD_COMPILER "MS VC++ 9.0 (VS2008)" 204 #else 205 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER) 206 #endif 207 #elif defined(__SUNPRO_CC) 208 #if __SUNPRO_CC == 0x420 209 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2" 210 #elif __SUNPRO_CC == 0x500 211 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT) 212 #elif __SUNPRO_CC == 0x520 213 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT) 214 #elif __SUNPRO_CC == 0x580 215 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8" 216 #elif __SUNPRO_CC == 0x590 217 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9" 218 #elif __SUNPRO_CC == 0x5100 219 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1" 220 #else 221 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC) 222 #endif 223 #elif defined(__GNUC__) 224 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__ 225 #else 226 #define HOTSPOT_BUILD_COMPILER "unknown compiler" 227 #endif 228 #endif 229 230 #ifndef FLOAT_ARCH 231 #if defined(__SOFTFP__) 232 #define FLOAT_ARCH "-sflt" 233 #elif defined(E500V2) 234 #define FLOAT_ARCH "-e500v2" 235 #elif defined(ARM) 236 #define FLOAT_ARCH "-vfp" 237 #elif defined(PPC) 238 #define FLOAT_ARCH "-hflt" 239 #else 240 #define FLOAT_ARCH "" 241 #endif 242 #endif 243 244 return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH 245 " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__ 246 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER; 247 } 248 249 const char *Abstract_VM_Version::vm_build_user() { 250 return HOTSPOT_BUILD_USER; 251 } 252 253 unsigned int Abstract_VM_Version::jvm_version() { 254 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) | 255 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) | 256 (Abstract_VM_Version::vm_build_number() & 0xFF); 257 } 258 259 260 void VM_Version_init() { 261 VM_Version::initialize(); 262 263 #ifndef PRODUCT 264 if (PrintMiscellaneous && Verbose) { 265 os::print_cpu_info(tty); 266 } 267 #endif 268 } 269 270 unsigned int Abstract_VM_Version::nof_parallel_worker_threads( 271 unsigned int num, 272 unsigned int den, 273 unsigned int switch_pt) { 274 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { 275 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0"); 276 // For very large machines, there are diminishing returns 277 // for large numbers of worker threads. Instead of 278 // hogging the whole system, use a fraction of the workers for every 279 // processor after the first 8. For example, on a 72 cpu machine 280 // and a chosen fraction of 5/8 281 // use 8 + (72 - 8) * (5/8) == 48 worker threads. 282 unsigned int ncpus = (unsigned int) os::active_processor_count(); 283 return (ncpus <= switch_pt) ? 284 ncpus : 285 (switch_pt + ((ncpus - switch_pt) * num) / den); 286 } else { 287 return ParallelGCThreads; 288 } 289 } 290 291 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() { 292 return nof_parallel_worker_threads(5, 8, 8); 293 } 294 295 296 // Does not set the _initialized flag since it is 297 // a global flag. 298 unsigned int Abstract_VM_Version::parallel_worker_threads() { 299 if (!_parallel_worker_threads_initialized) { 300 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { 301 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads(); 302 } else { 303 _parallel_worker_threads = ParallelGCThreads; 304 } 305 _parallel_worker_threads_initialized = true; 306 } 307 return _parallel_worker_threads; 308 }