1 /* 2 * Copyright (c) 1998, 2015, 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 "code/codeCacheExtensions.hpp" 27 #include "memory/universe.hpp" 28 #include "oops/oop.inline.hpp" 29 #include "runtime/arguments.hpp" 30 #include "runtime/vm_version.hpp" 31 32 const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release(); 33 const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string(); 34 bool Abstract_VM_Version::_supports_cx8 = false; 35 bool Abstract_VM_Version::_supports_atomic_getset4 = false; 36 bool Abstract_VM_Version::_supports_atomic_getset8 = false; 37 bool Abstract_VM_Version::_supports_atomic_getadd4 = false; 38 bool Abstract_VM_Version::_supports_atomic_getadd8 = false; 39 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U; 40 unsigned int Abstract_VM_Version::_L1_data_cache_line_size = 0; 41 int Abstract_VM_Version::_reserve_for_allocation_prefetch = 0; 42 43 #ifndef HOTSPOT_RELEASE_VERSION 44 #error HOTSPOT_RELEASE_VERSION must be defined 45 #endif 46 47 #ifndef JDK_MAJOR_VERSION 48 #error JDK_MAJOR_VERSION must be defined 49 #endif 50 #ifndef JDK_MINOR_VERSION 51 #error JDK_MINOR_VERSION must be defined 52 #endif 53 #ifndef JDK_MICRO_VERSION 54 #error JDK_MICRO_VERSION must be defined 55 #endif 56 #ifndef JDK_BUILD_NUMBER 57 #error JDK_BUILD_NUMBER must be defined 58 #endif 59 60 #ifndef JRE_RELEASE_VERSION 61 #error JRE_RELEASE_VERSION must be defined 62 #endif 63 64 // NOTE: Builds within Visual Studio do not define the build target in 65 // HOTSPOT_RELEASE_VERSION, so it must be done here 66 #if defined(VISUAL_STUDIO_BUILD) && !defined(PRODUCT) 67 #ifndef HOTSPOT_BUILD_TARGET 68 #error HOTSPOT_BUILD_TARGET must be defined 69 #endif 70 #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET 71 #else 72 #define VM_RELEASE HOTSPOT_RELEASE_VERSION 73 #endif 74 75 // HOTSPOT_RELEASE_VERSION follows the JDK release version naming convention 76 // <major_ver>.<minor_ver>.<micro_ver>[-<identifier>][-<debug_target>][-b<nn>] 77 int Abstract_VM_Version::_vm_major_version = 0; 78 int Abstract_VM_Version::_vm_minor_version = 0; 79 int Abstract_VM_Version::_vm_micro_version = 0; 80 int Abstract_VM_Version::_vm_build_number = 0; 81 bool Abstract_VM_Version::_initialized = false; 82 unsigned int Abstract_VM_Version::_parallel_worker_threads = 0; 83 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false; 84 85 #ifdef ASSERT 86 static void assert_digits(const char * s, const char * message) { 87 for (int i = 0; s[i] != '\0'; i++) { 88 assert(isdigit(s[i]), "%s", message); 89 } 90 } 91 #endif 92 93 static void set_version_field(int * version_field, const char * version_str, 94 const char * const assert_msg) { 95 if (version_str != NULL && *version_str != '\0') { 96 DEBUG_ONLY(assert_digits(version_str, assert_msg)); 97 *version_field = atoi(version_str); 98 } 99 } 100 101 void Abstract_VM_Version::initialize() { 102 if (_initialized) { 103 return; 104 } 105 106 set_version_field(&_vm_major_version, JDK_MAJOR_VERSION, "bad major version"); 107 set_version_field(&_vm_minor_version, JDK_MINOR_VERSION, "bad minor version"); 108 set_version_field(&_vm_micro_version, JDK_MICRO_VERSION, "bad micro version"); 109 int offset = (JDK_BUILD_NUMBER != NULL && JDK_BUILD_NUMBER[0] == 'b') ? 1 : 0; 110 set_version_field(&_vm_build_number, &JDK_BUILD_NUMBER[offset], 111 "bad build number"); 112 113 _initialized = true; 114 } 115 116 #if defined(_LP64) 117 #define VMLP "64-Bit " 118 #else 119 #define VMLP "" 120 #endif 121 122 #ifndef VMTYPE 123 #ifdef TIERED 124 #define VMTYPE "Server" 125 #else // TIERED 126 #ifdef ZERO 127 #ifdef SHARK 128 #define VMTYPE "Shark" 129 #else // SHARK 130 #define VMTYPE "Zero" 131 #endif // SHARK 132 #else // ZERO 133 #define VMTYPE COMPILER1_PRESENT("Client") \ 134 COMPILER2_PRESENT("Server") 135 #endif // ZERO 136 #endif // TIERED 137 #endif 138 139 #ifndef HOTSPOT_VM_DISTRO 140 #error HOTSPOT_VM_DISTRO must be defined 141 #endif 142 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP EMBEDDED_ONLY("Embedded ") VMTYPE " VM" 143 144 const char* Abstract_VM_Version::vm_name() { 145 return VMNAME; 146 } 147 148 149 const char* Abstract_VM_Version::vm_vendor() { 150 #ifdef VENDOR 151 return XSTR(VENDOR); 152 #else 153 return "Oracle Corporation"; 154 #endif 155 } 156 157 const char* Abstract_VM_Version::vm_info_string() { 158 if (CodeCacheExtensions::use_pregenerated_interpreter()) { 159 return "interpreted mode, pregenerated"; 160 } 161 switch (Arguments::mode()) { 162 case Arguments::_int: 163 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode"; 164 case Arguments::_mixed: 165 return UseSharedSpaces ? "mixed mode, sharing" : "mixed mode"; 166 case Arguments::_comp: 167 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode"; 168 }; 169 ShouldNotReachHere(); 170 return ""; 171 } 172 173 // NOTE: do *not* use stringStream. this function is called by 174 // fatal error handler. if the crash is in native thread, 175 // stringStream cannot get resource allocated and will SEGV. 176 const char* Abstract_VM_Version::vm_release() { 177 return VM_RELEASE; 178 } 179 180 // NOTE: do *not* use stringStream. this function is called by 181 // fatal error handlers. if the crash is in native thread, 182 // stringStream cannot get resource allocated and will SEGV. 183 const char* Abstract_VM_Version::jre_release_version() { 184 return JRE_RELEASE_VERSION; 185 } 186 187 #define OS LINUX_ONLY("linux") \ 188 WINDOWS_ONLY("windows") \ 189 SOLARIS_ONLY("solaris") \ 190 AIX_ONLY("aix") \ 191 BSD_ONLY("bsd") 192 193 #ifndef CPU 194 #ifdef ZERO 195 #define CPU ZERO_LIBARCH 196 #elif defined(PPC64) 197 #if defined(VM_LITTLE_ENDIAN) 198 #define CPU "ppc64le" 199 #else 200 #define CPU "ppc64" 201 #endif 202 #else 203 #define CPU IA32_ONLY("x86") \ 204 IA64_ONLY("ia64") \ 205 AMD64_ONLY("amd64") \ 206 AARCH64_ONLY("aarch64") \ 207 SPARC_ONLY("sparc") 208 #endif // 209 #endif 210 211 const char *Abstract_VM_Version::vm_platform_string() { 212 return OS "-" CPU; 213 } 214 215 const char* Abstract_VM_Version::internal_vm_info_string() { 216 #ifndef HOTSPOT_BUILD_USER 217 #define HOTSPOT_BUILD_USER unknown 218 #endif 219 220 #ifndef HOTSPOT_BUILD_COMPILER 221 #ifdef _MSC_VER 222 #if _MSC_VER == 1600 223 #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)" 224 #elif _MSC_VER == 1700 225 #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)" 226 #elif _MSC_VER == 1800 227 #define HOTSPOT_BUILD_COMPILER "MS VC++ 12.0 (VS2013)" 228 #else 229 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER) 230 #endif 231 #elif defined(__SUNPRO_CC) 232 #if __SUNPRO_CC == 0x420 233 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2" 234 #elif __SUNPRO_CC == 0x500 235 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT) 236 #elif __SUNPRO_CC == 0x520 237 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT) 238 #elif __SUNPRO_CC == 0x580 239 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8" 240 #elif __SUNPRO_CC == 0x590 241 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9" 242 #elif __SUNPRO_CC == 0x5100 243 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1" 244 #elif __SUNPRO_CC == 0x5120 245 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u3" 246 #else 247 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC) 248 #endif 249 #elif defined(__GNUC__) 250 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__ 251 #elif defined(__IBMCPP__) 252 #define HOTSPOT_BUILD_COMPILER "xlC " XSTR(__IBMCPP__) 253 254 #else 255 #define HOTSPOT_BUILD_COMPILER "unknown compiler" 256 #endif 257 #endif 258 259 #ifndef FLOAT_ARCH 260 #if defined(__SOFTFP__) 261 #define FLOAT_ARCH_STR "-sflt" 262 #else 263 #define FLOAT_ARCH_STR "" 264 #endif 265 #else 266 #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH) 267 #endif 268 269 return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH_STR 270 " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__ 271 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER; 272 } 273 274 const char *Abstract_VM_Version::vm_build_user() { 275 return HOTSPOT_BUILD_USER; 276 } 277 278 unsigned int Abstract_VM_Version::jvm_version() { 279 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) | 280 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) | 281 ((Abstract_VM_Version::vm_micro_version() & 0xFF) << 8) | 282 (Abstract_VM_Version::vm_build_number() & 0xFF); 283 } 284 285 286 void VM_Version_init() { 287 VM_Version::initialize(); 288 289 #ifndef PRODUCT 290 if (PrintMiscellaneous && Verbose) { 291 char buf[512]; 292 os::print_cpu_info(tty, buf, sizeof(buf)); 293 } 294 #endif 295 } 296 297 unsigned int Abstract_VM_Version::nof_parallel_worker_threads( 298 unsigned int num, 299 unsigned int den, 300 unsigned int switch_pt) { 301 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { 302 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0"); 303 // For very large machines, there are diminishing returns 304 // for large numbers of worker threads. Instead of 305 // hogging the whole system, use a fraction of the workers for every 306 // processor after the first 8. For example, on a 72 cpu machine 307 // and a chosen fraction of 5/8 308 // use 8 + (72 - 8) * (5/8) == 48 worker threads. 309 unsigned int ncpus = (unsigned int) os::active_processor_count(); 310 return (ncpus <= switch_pt) ? 311 ncpus : 312 (switch_pt + ((ncpus - switch_pt) * num) / den); 313 } else { 314 return ParallelGCThreads; 315 } 316 } 317 318 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() { 319 return nof_parallel_worker_threads(5, 8, 8); 320 } 321 322 323 // Does not set the _initialized flag since it is 324 // a global flag. 325 unsigned int Abstract_VM_Version::parallel_worker_threads() { 326 if (!_parallel_worker_threads_initialized) { 327 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { 328 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads(); 329 } else { 330 _parallel_worker_threads = ParallelGCThreads; 331 } 332 _parallel_worker_threads_initialized = true; 333 } 334 return _parallel_worker_threads; 335 }