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

6666698: EnableBiasedLocking with BiasedLockingStartupDelay can block Watcher thread
Summary: Enqueue VM_EnableBiasedLocking operation asynchronously
Reviewed-by: never, xlu, kbr, acorn

     1 /*

     2  * Copyright 1997-2007 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 // VM_Version provides information about the VM.

    27 class Abstract_VM_Version: AllStatic {

    28  protected:

    29   friend class VMStructs;

    30   static const char*  _s_vm_release;

    31   static const char*  _s_internal_vm_info_string;

    32   // These are set by machine-dependent initializations

    33   static bool         _supports_cx8;

    34   static unsigned int _logical_processors_per_package;

    35   static int          _vm_major_version;

    36   static int          _vm_minor_version;

    37   static int          _vm_build_number;

    38   static bool         _initialized;

    39  public:

    40   static void initialize();

    42   // Name

    43   static const char* vm_name();

    44   // Vendor

    45   static const char* vm_vendor();

    46   // VM version information string printed by launcher (java -version)

    47   static const char* vm_info_string();

    48   static const char* vm_release();

    49   static const char* vm_platform_string();

    51   static int vm_major_version()               { assert(_initialized, "not initialized"); return _vm_major_version; }

    52   static int vm_minor_version()               { assert(_initialized, "not initialized"); return _vm_minor_version; }

    53   static int vm_build_number()                { assert(_initialized, "not initialized"); return _vm_build_number; }

    55   // Gets the jvm_version_info.jvm_version defined in jvm.h

    56   static unsigned int jvm_version();

    58   // Internal version providing additional build information

    59   static const char* internal_vm_info_string();

    61   // does HW support an 8-byte compare-exchange operation?

    62   static bool supports_cx8()  {return _supports_cx8;}

    63   static unsigned int logical_processors_per_package() {

    64     return _logical_processors_per_package;

    65   }

    67   // Number of page sizes efficiently supported by the hardware.  Most chips now

    68   // support two sizes, thus this default implementation.  Processor-specific

    69   // subclasses should define new versions to hide this one as needed.  Note

    70   // that the O/S may support more sizes, but at most this many are used.

    71   static uint page_size_count() { return 2; }

    72 };

src/share/vm/runtime/vm_version.hpp@7ee622712fcf

src/share/vm/runtime/vm_version.hpp

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

src/share/vm/runtime/vm_version.hpp@7ee622712fcf

src/share/vm/runtime/vm_version.hpp