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]), 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 } 156 157 158 const char* Abstract_VM_Version::vm_info_string() { 159 if (CodeCacheExtensions::use_pregenerated_interpreter()) { 160 return "interpreted mode, pregenerated"; 161 } 162 switch (Arguments::mode()) { 163 case Arguments::_int: 164 return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode"; 165 case Arguments::_mixed: 166 return UseSharedSpaces ? "mixed mode, sharing" : "mixed mode"; 167 case Arguments::_comp: 168 return UseSharedSpaces ? "compiled mode, sharing" : "compiled mode"; 169 }; 170 ShouldNotReachHere(); 171 return ""; 172 } 173 174 // NOTE: do *not* use stringStream. this function is called by 175 // fatal error handler. if the crash is in native thread, 176 // stringStream cannot get resource allocated and will SEGV. 177 const char* Abstract_VM_Version::vm_release() { 178 return VM_RELEASE; 179 } 180 181 // NOTE: do *not* use stringStream. this function is called by 182 // fatal error handlers. if the crash is in native thread, 183 // stringStream cannot get resource allocated and will SEGV. 184 const char* Abstract_VM_Version::jre_release_version() { 185 return JRE_RELEASE_VERSION; 186 } 187 188 #define OS LINUX_ONLY("linux") \ 189 WINDOWS_ONLY("windows") \ 190 SOLARIS_ONLY("solaris") \ 191 AIX_ONLY("aix") \ 192 BSD_ONLY("bsd") 193 194 #ifndef CPU 195 #ifdef ZERO 196 #define CPU ZERO_LIBARCH 197 #else 198 #define CPU IA32_ONLY("x86") \ 199 IA64_ONLY("ia64") \ 200 AMD64_ONLY("amd64") \ 201 PPC64_ONLY("ppc64") \ 202 AARCH64_ONLY("aarch64") \ 203 SPARC_ONLY("sparc") 204 #endif // ZERO 205 #endif 206 207 const char *Abstract_VM_Version::vm_platform_string() { 208 return OS "-" CPU; 209 } 210 211 const char* Abstract_VM_Version::internal_vm_info_string() { 212 #ifndef HOTSPOT_BUILD_USER 213 #define HOTSPOT_BUILD_USER unknown 214 #endif 215 216 #ifndef HOTSPOT_BUILD_COMPILER 217 #ifdef _MSC_VER 218 #if _MSC_VER == 1600 219 #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)" 220 #elif _MSC_VER == 1700 221 #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)" 222 #elif _MSC_VER == 1800 223 #define HOTSPOT_BUILD_COMPILER "MS VC++ 12.0 (VS2013)" 224 #else 225 #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER) 226 #endif 227 #elif defined(__SUNPRO_CC) 228 #if __SUNPRO_CC == 0x420 229 #define HOTSPOT_BUILD_COMPILER "Workshop 4.2" 230 #elif __SUNPRO_CC == 0x500 231 #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT) 232 #elif __SUNPRO_CC == 0x520 233 #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT) 234 #elif __SUNPRO_CC == 0x580 235 #define HOTSPOT_BUILD_COMPILER "Workshop 5.8" 236 #elif __SUNPRO_CC == 0x590 237 #define HOTSPOT_BUILD_COMPILER "Workshop 5.9" 238 #elif __SUNPRO_CC == 0x5100 239 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1" 240 #elif __SUNPRO_CC == 0x5120 241 #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u3" 242 #else 243 #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC) 244 #endif 245 #elif defined(__GNUC__) 246 #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__ 247 #elif defined(__IBMCPP__) 248 #define HOTSPOT_BUILD_COMPILER "xlC " XSTR(__IBMCPP__) 249 250 #else 251 #define HOTSPOT_BUILD_COMPILER "unknown compiler" 252 #endif 253 #endif 254 255 #ifndef FLOAT_ARCH 256 #if defined(__SOFTFP__) 257 #define FLOAT_ARCH_STR "-sflt" 258 #else 259 #define FLOAT_ARCH_STR "" 260 #endif 261 #else 262 #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH) 263 #endif 264 265 return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH_STR 266 " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__ 267 " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER; 268 } 269 270 const char *Abstract_VM_Version::vm_build_user() { 271 return HOTSPOT_BUILD_USER; 272 } 273 274 unsigned int Abstract_VM_Version::jvm_version() { 275 return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) | 276 ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) | 277 ((Abstract_VM_Version::vm_micro_version() & 0xFF) << 8) | 278 (Abstract_VM_Version::vm_build_number() & 0xFF); 279 } 280 281 282 void VM_Version_init() { 283 VM_Version::initialize(); 284 285 #ifndef PRODUCT 286 if (PrintMiscellaneous && Verbose) { 287 char buf[512]; 288 os::print_cpu_info(tty, buf, sizeof(buf)); 289 } 290 #endif 291 } 292 293 unsigned int Abstract_VM_Version::nof_parallel_worker_threads( 294 unsigned int num, 295 unsigned int den, 296 unsigned int switch_pt) { 297 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { 298 assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0"); 299 // For very large machines, there are diminishing returns 300 // for large numbers of worker threads. Instead of 301 // hogging the whole system, use a fraction of the workers for every 302 // processor after the first 8. For example, on a 72 cpu machine 303 // and a chosen fraction of 5/8 304 // use 8 + (72 - 8) * (5/8) == 48 worker threads. 305 unsigned int ncpus = (unsigned int) os::active_processor_count(); 306 return (ncpus <= switch_pt) ? 307 ncpus : 308 (switch_pt + ((ncpus - switch_pt) * num) / den); 309 } else { 310 return ParallelGCThreads; 311 } 312 } 313 314 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() { 315 return nof_parallel_worker_threads(5, 8, 8); 316 } 317 318 319 // Does not set the _initialized flag since it is 320 // a global flag. 321 unsigned int Abstract_VM_Version::parallel_worker_threads() { 322 if (!_parallel_worker_threads_initialized) { 323 if (FLAG_IS_DEFAULT(ParallelGCThreads)) { 324 _parallel_worker_threads = VM_Version::calc_parallel_worker_threads(); 325 } else { 326 _parallel_worker_threads = ParallelGCThreads; 327 } 328 _parallel_worker_threads_initialized = true; 329 } 330 return _parallel_worker_threads; 331 }