jdk8-mips64-public/hotspot: src/share/vm/runtime/vm

8161993: G1 crashes if active_processor_count changes during startup
Summary: Use the initial active processor count for memory initialization instead of the current active one.
Reviewed-by: dholmes, mgerdin

     1 /*

     2  * Copyright (c) 1998, 2016, 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  */

    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

    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 bool Abstract_VM_Version::_supports_atomic_getset4 = false;

    49 bool Abstract_VM_Version::_supports_atomic_getset8 = false;

    50 bool Abstract_VM_Version::_supports_atomic_getadd4 = false;

    51 bool Abstract_VM_Version::_supports_atomic_getadd8 = false;

    52 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U;

    53 int Abstract_VM_Version::_reserve_for_allocation_prefetch = 0;

    55 #ifndef HOTSPOT_RELEASE_VERSION

    56   #error HOTSPOT_RELEASE_VERSION must be defined

    57 #endif

    58 #ifndef JRE_RELEASE_VERSION

    59   #error JRE_RELEASE_VERSION must be defined

    60 #endif

    61 #ifndef HOTSPOT_BUILD_TARGET

    62   #error HOTSPOT_BUILD_TARGET must be defined

    63 #endif

    65 #ifdef PRODUCT

    66   #define VM_RELEASE HOTSPOT_RELEASE_VERSION

    67 #else

    68   #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET

    69 #endif

    71 // HOTSPOT_RELEASE_VERSION must follow the release version naming convention

    72 // <major_ver>.<minor_ver>-b<nn>[-<identifier>][-<debug_target>]

    73 int Abstract_VM_Version::_vm_major_version = 0;

    74 int Abstract_VM_Version::_vm_minor_version = 0;

    75 int Abstract_VM_Version::_vm_build_number = 0;

    76 bool Abstract_VM_Version::_initialized = false;

    77 int Abstract_VM_Version::_parallel_worker_threads = 0;

    78 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false;

    80 void Abstract_VM_Version::initialize() {

    81   if (_initialized) {

    82     return;

    83   }

    84   char* vm_version = os::strdup(HOTSPOT_RELEASE_VERSION);

    86   // Expecting the next vm_version format:

    87   // <major_ver>.<minor_ver>-b<nn>[-<identifier>]

    88   char* vm_major_ver = vm_version;

    89   assert(isdigit(vm_major_ver[0]),"wrong vm major version number");

    90   char* vm_minor_ver = strchr(vm_major_ver, '.');

    91   assert(vm_minor_ver != NULL && isdigit(vm_minor_ver[1]),"wrong vm minor version number");

    92   vm_minor_ver[0] = '\0'; // terminate vm_major_ver

    93   vm_minor_ver += 1;

    94   char* vm_build_num = strchr(vm_minor_ver, '-');

    95   assert(vm_build_num != NULL && vm_build_num[1] == 'b' && isdigit(vm_build_num[2]),"wrong vm build number");

    96   vm_build_num[0] = '\0'; // terminate vm_minor_ver

    97   vm_build_num += 2;

    99   _vm_major_version = atoi(vm_major_ver);

   100   _vm_minor_version = atoi(vm_minor_ver);

   101   _vm_build_number  = atoi(vm_build_num);

   103   os::free(vm_version);

   104   _initialized = true;

   105 }

   107 #if defined(_LP64)

   108   #define VMLP "64-Bit "

   109 #else

   110   #define VMLP ""

   111 #endif

   113 #ifndef VMTYPE

   114   #ifdef TIERED

   115     #define VMTYPE "Server"

   116   #else // TIERED

   117   #ifdef ZERO

   118   #ifdef SHARK

   119     #define VMTYPE "Shark"

   120   #else // SHARK

   121     #define VMTYPE "Zero"

   122   #endif // SHARK

   123   #else // ZERO

   124      #define VMTYPE COMPILER1_PRESENT("Client")   \

   125                     COMPILER2_PRESENT("Server")

   126   #endif // ZERO

   127   #endif // TIERED

   128 #endif

   130 #ifndef HOTSPOT_VM_DISTRO

   131   #error HOTSPOT_VM_DISTRO must be defined

   132 #endif

   133 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP EMBEDDED_ONLY("Embedded ") VMTYPE " VM"

   135 const char* Abstract_VM_Version::vm_name() {

   136   return VMNAME;

   137 }

   140 const char* Abstract_VM_Version::vm_vendor() {

   141 #ifdef VENDOR

   142   return XSTR(VENDOR);

   143 #else

   144   return JDK_Version::is_gte_jdk17x_version() ?

   145     "Oracle Corporation" : "Sun Microsystems Inc.";

   146 #endif

   147 }

   150 const char* Abstract_VM_Version::vm_info_string() {

   151   switch (Arguments::mode()) {

   152     case Arguments::_int:

   153       return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode";

   154     case Arguments::_mixed:

   155       return UseSharedSpaces ? "mixed mode, sharing"       :  "mixed mode";

   156     case Arguments::_comp:

   157       return UseSharedSpaces ? "compiled mode, sharing"    : "compiled mode";

   158   };

   159   ShouldNotReachHere();

   160   return "";

   161 }

   163 // NOTE: do *not* use stringStream. this function is called by

   164 //       fatal error handler. if the crash is in native thread,

   165 //       stringStream cannot get resource allocated and will SEGV.

   166 const char* Abstract_VM_Version::vm_release() {

   167   return VM_RELEASE;

   168 }

   170 // NOTE: do *not* use stringStream. this function is called by

   171 //       fatal error handlers. if the crash is in native thread,

   172 //       stringStream cannot get resource allocated and will SEGV.

   173 const char* Abstract_VM_Version::jre_release_version() {

   174   return JRE_RELEASE_VERSION;

   175 }

   177 #define OS       LINUX_ONLY("linux")             \

   178                  WINDOWS_ONLY("windows")         \

   179                  SOLARIS_ONLY("solaris")         \

   180                  AIX_ONLY("aix")                 \

   181                  BSD_ONLY("bsd")

   183 #ifndef CPU

   184 #ifdef ZERO

   185 #define CPU      ZERO_LIBARCH

   186 #else

   187 #define CPU      IA32_ONLY("x86")                \

   188                  IA64_ONLY("ia64")               \

   189                  AMD64_ONLY("amd64")             \

   190                  PPC64_ONLY("ppc64")             \

   191                  SPARC_ONLY("sparc")

   192 #endif // ZERO

   193 #endif

   195 const char *Abstract_VM_Version::vm_platform_string() {

   196   return OS "-" CPU;

   197 }

   199 const char* Abstract_VM_Version::internal_vm_info_string() {

   200   #ifndef HOTSPOT_BUILD_USER

   201     #define HOTSPOT_BUILD_USER unknown

   202   #endif

   204   #ifndef HOTSPOT_BUILD_COMPILER

   205     #ifdef _MSC_VER

   206       #if   _MSC_VER == 1100

   207         #define HOTSPOT_BUILD_COMPILER "MS VC++ 5.0"

   208       #elif _MSC_VER == 1200

   209         #define HOTSPOT_BUILD_COMPILER "MS VC++ 6.0"

   210       #elif _MSC_VER == 1310

   211         #define HOTSPOT_BUILD_COMPILER "MS VC++ 7.1 (VS2003)"

   212       #elif _MSC_VER == 1400

   213         #define HOTSPOT_BUILD_COMPILER "MS VC++ 8.0 (VS2005)"

   214       #elif _MSC_VER == 1500

   215         #define HOTSPOT_BUILD_COMPILER "MS VC++ 9.0 (VS2008)"

   216       #elif _MSC_VER == 1600

   217         #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)"

   218       #elif _MSC_VER == 1700

   219         #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)"

   220       #else

   221         #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)

   222       #endif

   223     #elif defined(__SUNPRO_CC)

   224       #if   __SUNPRO_CC == 0x420

   225         #define HOTSPOT_BUILD_COMPILER "Workshop 4.2"

   226       #elif __SUNPRO_CC == 0x500

   227         #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT)

   228       #elif __SUNPRO_CC == 0x520

   229         #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT)

   230       #elif __SUNPRO_CC == 0x580

   231         #define HOTSPOT_BUILD_COMPILER "Workshop 5.8"

   232       #elif __SUNPRO_CC == 0x590

   233         #define HOTSPOT_BUILD_COMPILER "Workshop 5.9"

   234       #elif __SUNPRO_CC == 0x5100

   235         #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1"

   236       #elif __SUNPRO_CC == 0x5120

   237         #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u3"

   238       #else

   239         #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC)

   240       #endif

   241     #elif defined(__GNUC__)

   242         #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__

   243     #elif defined(__IBMCPP__)

   244         #define HOTSPOT_BUILD_COMPILER "xlC " XSTR(__IBMCPP__)

   246     #else

   247       #define HOTSPOT_BUILD_COMPILER "unknown compiler"

   248     #endif

   249   #endif

   251   #ifndef FLOAT_ARCH

   252     #if defined(__SOFTFP__)

   253       #define FLOAT_ARCH_STR "-sflt"

   254     #else

   255       #define FLOAT_ARCH_STR ""

   256     #endif

   257   #else

   258     #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH)

   259   #endif

   261   return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH_STR

   262          " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__

   263          " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER;

   264 }

   266 const char *Abstract_VM_Version::vm_build_user() {

   267   return HOTSPOT_BUILD_USER;

   268 }

   270 unsigned int Abstract_VM_Version::jvm_version() {

   271   return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |

   272          ((Abstract_VM_Version::vm_minor_version() & 0xFF) << 16) |

   273          (Abstract_VM_Version::vm_build_number() & 0xFF);

   274 }

   277 void VM_Version_init() {

   278   VM_Version::initialize();

   280 #ifndef PRODUCT

   281   if (PrintMiscellaneous && Verbose) {

   282     os::print_cpu_info(tty);

   283   }

   284 #endif

   285 }

   287 unsigned int Abstract_VM_Version::nof_parallel_worker_threads(

   288                                                       unsigned int num,

   289                                                       unsigned int den,

   290                                                       unsigned int switch_pt) {

   291   if (FLAG_IS_DEFAULT(ParallelGCThreads)) {

   292     assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0");

   293     // For very large machines, there are diminishing returns

   294     // for large numbers of worker threads.  Instead of

   295     // hogging the whole system, use a fraction of the workers for every

   296     // processor after the first 8.  For example, on a 72 cpu machine

   297     // and a chosen fraction of 5/8

   298     // use 8 + (72 - 8) * (5/8) == 48 worker threads.

   299     unsigned int ncpus = (unsigned int) os::initial_active_processor_count();

   300     return (ncpus <= switch_pt) ?

   301            ncpus :

   302           (switch_pt + ((ncpus - switch_pt) * num) / den);

   303   } else {

   304     return ParallelGCThreads;

   305   }

   306 }

   308 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() {

   309   return nof_parallel_worker_threads(5, 8, 8);

   310 }

   313 // Does not set the _initialized flag since it is

   314 // a global flag.

   315 unsigned int Abstract_VM_Version::parallel_worker_threads() {

   316   if (!_parallel_worker_threads_initialized) {

   317     if (FLAG_IS_DEFAULT(ParallelGCThreads)) {

   318       _parallel_worker_threads = VM_Version::calc_parallel_worker_threads();

   319     } else {

   320       _parallel_worker_threads = ParallelGCThreads;

   321     }

   322     _parallel_worker_threads_initialized = true;

   323   }

   324   return _parallel_worker_threads;

   325 }

src/share/vm/runtime/vm_version.cpp@9975dd8382d5

src/share/vm/runtime/vm_version.cpp

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/runtime/vm_version.cpp@9975dd8382d5

src/share/vm/runtime/vm_version.cpp