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 
  28 const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release();
  29 const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string();
  30 bool Abstract_VM_Version::_supports_cx8 = false;
  31 unsigned 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>]
  51 int Abstract_VM_Version::_vm_major_version = 0;
  52 int Abstract_VM_Version::_vm_minor_version = 0;
  53 int Abstract_VM_Version::_vm_build_number = 0;
  54 bool Abstract_VM_Version::_initialized = false;
  55 int Abstract_VM_Version::_parallel_worker_threads = 0;
  56 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false;
  57 
  58 void 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 
 111 const char* Abstract_VM_Version::vm_name() {
 112   return VMNAME;
 113 }
 114 
 115 
 116 const 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 
 125 const 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.
 141 const 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 
 158 const char *Abstract_VM_Version::vm_platform_string() {
 159   return OS "-" CPU;
 160 }
 161 
 162 const 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 
 211 unsigned 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 
 218 void 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 
 228 unsigned 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 
 249 unsigned 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.
 256 unsigned 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 }