jdk8-mips64-public/hotspot: src/share/vm/runtime/vm_version.cpp@72053ed6f8d4 (annotated)

src/share/vm/runtime/vm_version.cpp@72053ed6f8d4 (annotated)

src/share/vm/runtime/vm_version.cpp

Thu, 24 Nov 2016 11:27:57 +0100

author: tschatzl
date: Thu, 24 Nov 2016 11:27:57 +0100
changeset 9982: 72053ed6f8d4
parent 9946: 103d1261f1f4
child 10015: eb7ce841ccec
permissions: -rw-r--r--

8057003: Large reference arrays cause extremely long synchronization times
Summary: Slice large object arrays into parts so that the synchronization of marking threads with an STW pause request does not take long.
Reviewed-by: ehelin, pliden
Contributed-by: maoliang.ml@alibaba-inc.com

 /*
  * Copyright (c) 1998, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "memory/universe.hpp"
 #include "oops/oop.inline.hpp"
 #include "runtime/arguments.hpp"
 #ifdef TARGET_ARCH_x86
 # include "vm_version_x86.hpp"
 #endif
 #ifdef TARGET_ARCH_sparc
 # include "vm_version_sparc.hpp"
 #endif
 #ifdef TARGET_ARCH_zero
 # include "vm_version_zero.hpp"
 #endif
 #ifdef TARGET_ARCH_arm
 # include "vm_version_arm.hpp"
 #endif
 #ifdef TARGET_ARCH_ppc
 # include "vm_version_ppc.hpp"
 #endif
 const char* Abstract_VM_Version::_s_vm_release = Abstract_VM_Version::vm_release();
 const char* Abstract_VM_Version::_s_internal_vm_info_string = Abstract_VM_Version::internal_vm_info_string();
 bool Abstract_VM_Version::_supports_cx8 = false;
 bool Abstract_VM_Version::_supports_atomic_getset4 = false;
 bool Abstract_VM_Version::_supports_atomic_getset8 = false;
 bool Abstract_VM_Version::_supports_atomic_getadd4 = false;
 bool Abstract_VM_Version::_supports_atomic_getadd8 = false;
 unsigned int Abstract_VM_Version::_logical_processors_per_package = 1U;
 unsigned int Abstract_VM_Version::_L1_data_cache_line_size = 0;
 int Abstract_VM_Version::_reserve_for_allocation_prefetch = 0;
 #ifndef HOTSPOT_RELEASE_VERSION
   #error HOTSPOT_RELEASE_VERSION must be defined
 #endif
 #ifndef JRE_RELEASE_VERSION
   #error JRE_RELEASE_VERSION must be defined
 #endif
 #ifndef HOTSPOT_BUILD_TARGET
   #error HOTSPOT_BUILD_TARGET must be defined
 #endif
 #ifdef PRODUCT
   #define VM_RELEASE HOTSPOT_RELEASE_VERSION
 #else
   #define VM_RELEASE HOTSPOT_RELEASE_VERSION "-" HOTSPOT_BUILD_TARGET
 #endif
 // HOTSPOT_RELEASE_VERSION must follow the release version naming convention
 // <major_ver>.<minor_ver>-b<nn>[-<identifier>][-<debug_target>]
 int Abstract_VM_Version::_vm_major_version = 0;
 int Abstract_VM_Version::_vm_minor_version = 0;
 int Abstract_VM_Version::_vm_build_number = 0;
 bool Abstract_VM_Version::_initialized = false;
 int Abstract_VM_Version::_parallel_worker_threads = 0;
 bool Abstract_VM_Version::_parallel_worker_threads_initialized = false;
 void Abstract_VM_Version::initialize() {
   if (_initialized) {
     return;
   }
   char* vm_version = os::strdup(HOTSPOT_RELEASE_VERSION);
   // Expecting the next vm_version format:
   // <major_ver>.<minor_ver>-b<nn>[-<identifier>]
   char* vm_major_ver = vm_version;
   assert(isdigit(vm_major_ver[0]),"wrong vm major version number");
   char* vm_minor_ver = strchr(vm_major_ver, '.');
   assert(vm_minor_ver != NULL && isdigit(vm_minor_ver[1]),"wrong vm minor version number");
   vm_minor_ver[0] = '\0'; // terminate vm_major_ver
   vm_minor_ver += 1;
   char* vm_build_num = strchr(vm_minor_ver, '-');
   assert(vm_build_num != NULL && vm_build_num[1] == 'b' && isdigit(vm_build_num[2]),"wrong vm build number");
   vm_build_num[0] = '\0'; // terminate vm_minor_ver
   vm_build_num += 2;
   _vm_major_version = atoi(vm_major_ver);
   _vm_minor_version = atoi(vm_minor_ver);
   _vm_build_number  = atoi(vm_build_num);
   os::free(vm_version);
   _initialized = true;
 }
 #if defined(_LP64)
   #define VMLP "64-Bit "
 #else
   #define VMLP ""
 #endif
 #ifndef VMTYPE
   #ifdef TIERED
     #define VMTYPE "Server"
   #else // TIERED
   #ifdef ZERO
   #ifdef SHARK
     #define VMTYPE "Shark"
   #else // SHARK
     #define VMTYPE "Zero"
   #endif // SHARK
   #else // ZERO
      #define VMTYPE COMPILER1_PRESENT("Client")   \
                     COMPILER2_PRESENT("Server")
   #endif // ZERO
   #endif // TIERED
 #endif
 #ifndef HOTSPOT_VM_DISTRO
   #error HOTSPOT_VM_DISTRO must be defined
 #endif
 #define VMNAME HOTSPOT_VM_DISTRO " " VMLP EMBEDDED_ONLY("Embedded ") VMTYPE " VM"
 const char* Abstract_VM_Version::vm_name() {
   return VMNAME;
 }
 const char* Abstract_VM_Version::vm_vendor() {
 #ifdef VENDOR
   return VENDOR;
 #else
   return JDK_Version::is_gte_jdk17x_version() ?
     "Oracle Corporation" : "Sun Microsystems Inc.";
 #endif
 }
 const char* Abstract_VM_Version::vm_info_string() {
   switch (Arguments::mode()) {
     case Arguments::_int:
       return UseSharedSpaces ? "interpreted mode, sharing" : "interpreted mode";
     case Arguments::_mixed:
       return UseSharedSpaces ? "mixed mode, sharing"       :  "mixed mode";
     case Arguments::_comp:
       return UseSharedSpaces ? "compiled mode, sharing"    : "compiled mode";
   };
   ShouldNotReachHere();
   return "";
 }
 // NOTE: do *not* use stringStream. this function is called by
 //       fatal error handler. if the crash is in native thread,
 //       stringStream cannot get resource allocated and will SEGV.
 const char* Abstract_VM_Version::vm_release() {
   return VM_RELEASE;
 }
 // NOTE: do *not* use stringStream. this function is called by
 //       fatal error handlers. if the crash is in native thread,
 //       stringStream cannot get resource allocated and will SEGV.
 const char* Abstract_VM_Version::jre_release_version() {
   return JRE_RELEASE_VERSION;
 }
 #define OS       LINUX_ONLY("linux")             \
                  WINDOWS_ONLY("windows")         \
                  SOLARIS_ONLY("solaris")         \
                  AIX_ONLY("aix")                 \
                  BSD_ONLY("bsd")
 #ifndef CPU
 #ifdef ZERO
 #define CPU      ZERO_LIBARCH
 #elif defined(PPC64)
 #if defined(VM_LITTLE_ENDIAN)
 #define CPU      "ppc64le"
 #else
 #define CPU      "ppc64"
 #endif
 #else
 #define CPU      IA32_ONLY("x86")                \
                  IA64_ONLY("ia64")               \
                  AMD64_ONLY("amd64")             \
                  SPARC_ONLY("sparc")
 #endif // ZERO
 #endif
 const char *Abstract_VM_Version::vm_platform_string() {
   return OS "-" CPU;
 }
 const char* Abstract_VM_Version::internal_vm_info_string() {
   #ifndef HOTSPOT_BUILD_USER
     #define HOTSPOT_BUILD_USER unknown
   #endif
   #ifndef HOTSPOT_BUILD_COMPILER
     #ifdef _MSC_VER
       #if   _MSC_VER == 1100
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 5.0"
       #elif _MSC_VER == 1200
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 6.0"
       #elif _MSC_VER == 1310
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 7.1 (VS2003)"
       #elif _MSC_VER == 1400
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 8.0 (VS2005)"
       #elif _MSC_VER == 1500
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 9.0 (VS2008)"
       #elif _MSC_VER == 1600
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 10.0 (VS2010)"
       #elif _MSC_VER == 1700
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 11.0 (VS2012)"
       #elif _MSC_VER == 1800
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 12.0 (VS2013)"
       #elif _MSC_VER == 1900
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 14.0 (VS2015)"
       #elif _MSC_VER == 1911
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 15.3 (VS2017)"
       #elif _MSC_VER == 1912
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 15.5 (VS2017)"
       #elif _MSC_VER == 1913
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 15.6 (VS2017)"
       #elif _MSC_VER == 1914
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 15.7 (VS2017)"
       #elif _MSC_VER == 1915
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 15.8 (VS2017)"
       #elif _MSC_VER == 1916
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 15.9 (VS2017)"
       #elif _MSC_VER == 1920
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 16.0 (VS2019)"
       #elif _MSC_VER == 1921
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 16.1 (VS2019)"
       #elif _MSC_VER == 1922
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 16.2 (VS2019)"
       #elif _MSC_VER == 1923
         #define HOTSPOT_BUILD_COMPILER "MS VC++ 16.3 (VS2019)"
       #else
         #define HOTSPOT_BUILD_COMPILER "unknown MS VC++:" XSTR(_MSC_VER)
       #endif
     #elif defined(__SUNPRO_CC)
       #if   __SUNPRO_CC == 0x420
         #define HOTSPOT_BUILD_COMPILER "Workshop 4.2"
       #elif __SUNPRO_CC == 0x500
         #define HOTSPOT_BUILD_COMPILER "Workshop 5.0 compat=" XSTR(__SUNPRO_CC_COMPAT)
       #elif __SUNPRO_CC == 0x520
         #define HOTSPOT_BUILD_COMPILER "Workshop 5.2 compat=" XSTR(__SUNPRO_CC_COMPAT)
       #elif __SUNPRO_CC == 0x580
         #define HOTSPOT_BUILD_COMPILER "Workshop 5.8"
       #elif __SUNPRO_CC == 0x590
         #define HOTSPOT_BUILD_COMPILER "Workshop 5.9"
       #elif __SUNPRO_CC == 0x5100
         #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u1"
       #elif __SUNPRO_CC == 0x5120
         #define HOTSPOT_BUILD_COMPILER "Sun Studio 12u3"
       #else
         #define HOTSPOT_BUILD_COMPILER "unknown Workshop:" XSTR(__SUNPRO_CC)
       #endif
     #elif defined(__GNUC__)
         #define HOTSPOT_BUILD_COMPILER "gcc " __VERSION__
     #elif defined(__IBMCPP__)
         #define HOTSPOT_BUILD_COMPILER "xlC " XSTR(__IBMCPP__)
     #else
       #define HOTSPOT_BUILD_COMPILER "unknown compiler"
     #endif
   #endif
   #ifndef FLOAT_ARCH
     #if defined(__SOFTFP__)
       #define FLOAT_ARCH_STR "-sflt"
     #else
       #define FLOAT_ARCH_STR ""
     #endif
   #else
     #define FLOAT_ARCH_STR XSTR(FLOAT_ARCH)
   #endif
   return VMNAME " (" VM_RELEASE ") for " OS "-" CPU FLOAT_ARCH_STR
          " JRE (" JRE_RELEASE_VERSION "), built on " __DATE__ " " __TIME__
          " by " XSTR(HOTSPOT_BUILD_USER) " with " HOTSPOT_BUILD_COMPILER;
 }
 const char *Abstract_VM_Version::vm_build_user() {
   return HOTSPOT_BUILD_USER;
 }
 unsigned int Abstract_VM_Version::jvm_version() {
   return ((Abstract_VM_Version::vm_major_version() & 0xFF) << 24) |
          ((Abstract_VM_Version::vm_minor_version() & 0xFFFF) << 8) |
          (Abstract_VM_Version::vm_build_number() & 0xFF);
 }
 void VM_Version_init() {
   VM_Version::initialize();
 #ifndef PRODUCT
   if (PrintMiscellaneous && Verbose) {
     os::print_cpu_info(tty);
   }
 #endif
 }
 unsigned int Abstract_VM_Version::nof_parallel_worker_threads(
                                                       unsigned int num,
                                                       unsigned int den,
                                                       unsigned int switch_pt) {
   if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
     assert(ParallelGCThreads == 0, "Default ParallelGCThreads is not 0");
     // For very large machines, there are diminishing returns
     // for large numbers of worker threads.  Instead of
     // hogging the whole system, use a fraction of the workers for every
     // processor after the first 8.  For example, on a 72 cpu machine
     // and a chosen fraction of 5/8
     // use 8 + (72 - 8) * (5/8) == 48 worker threads.
     unsigned int ncpus = (unsigned int) os::initial_active_processor_count();
     return (ncpus <= switch_pt) ?
            ncpus :
           (switch_pt + ((ncpus - switch_pt) * num) / den);
   } else {
     return ParallelGCThreads;
   }
 }
 unsigned int Abstract_VM_Version::calc_parallel_worker_threads() {
   return nof_parallel_worker_threads(5, 8, 8);
 }
 // Does not set the _initialized flag since it is
 // a global flag.
 unsigned int Abstract_VM_Version::parallel_worker_threads() {
   if (!_parallel_worker_threads_initialized) {
     if (FLAG_IS_DEFAULT(ParallelGCThreads)) {
       _parallel_worker_threads = VM_Version::calc_parallel_worker_threads();
     } else {
       _parallel_worker_threads = ParallelGCThreads;
     }
     _parallel_worker_threads_initialized = true;
   }
   return _parallel_worker_threads;
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/runtime/vm_version.cpp@72053ed6f8d4 (annotated)

src/share/vm/runtime/vm_version.cpp