jdk8-mips64-public/hotspot: src/share/vm/memory/oopFactory.hpp@4c84d351cca9

8007074: SIGSEGV at ParMarkBitMap::verify_clear()
Summary: Replace the broken large pages implementation on Linux. New flag: -XX:+UseTransparentHugePages - Linux specific flag to turn on transparent huge page hinting with madvise(..., MAP_HUGETLB). Changed behavior: -XX:+UseLargePages - tries to use -XX:+UseTransparentHugePages before trying other large pages implementations (on Linux). Changed behavior: -XX:+UseHugeTLBFS - Use upfront allocation of Large Pages instead of using the broken implementation to dynamically committing large pages. Changed behavior: -XX:LargePageSizeInBytes - Turned off the ability to use this flag on Linux and provides warning to user if set to a value different than the OS chosen large page size. Changed behavior: Setting no large page size - Now defaults to use -XX:UseTransparentHugePages if the OS supports it. Previously, -XX:+UseHugeTLBFS was chosen if the OS was configured to use large pages.
Reviewed-by: tschatzl, dcubed, brutisso

     1 /*

     2  * Copyright (c) 1997, 2013, 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 #ifndef SHARE_VM_MEMORY_OOPFACTORY_HPP

    26 #define SHARE_VM_MEMORY_OOPFACTORY_HPP

    28 #include "classfile/symbolTable.hpp"

    29 #include "classfile/systemDictionary.hpp"

    30 #include "memory/referenceType.hpp"

    31 #include "memory/universe.hpp"

    32 #include "oops/objArrayKlass.hpp"

    33 #include "oops/oop.hpp"

    34 #include "oops/typeArrayKlass.hpp"

    35 #include "utilities/growableArray.hpp"

    37 // oopFactory is a class used for creating new objects.

    39 class vframeArray;

    41 class oopFactory: AllStatic {

    42  public:

    43   // Basic type leaf array allocation

    44   static typeArrayOop    new_boolArray  (int length, TRAPS) { return TypeArrayKlass::cast(Universe::boolArrayKlassObj  ())->allocate(length, CHECK_NULL); }

    45   static typeArrayOop    new_charArray  (int length, TRAPS) { return TypeArrayKlass::cast(Universe::charArrayKlassObj  ())->allocate(length, CHECK_NULL); }

    46   static typeArrayOop    new_singleArray(int length, TRAPS) { return TypeArrayKlass::cast(Universe::singleArrayKlassObj())->allocate(length, CHECK_NULL); }

    47   static typeArrayOop    new_doubleArray(int length, TRAPS) { return TypeArrayKlass::cast(Universe::doubleArrayKlassObj())->allocate(length, CHECK_NULL); }

    48   static typeArrayOop    new_byteArray  (int length, TRAPS) { return TypeArrayKlass::cast(Universe::byteArrayKlassObj  ())->allocate(length, CHECK_NULL); }

    49   static typeArrayOop    new_shortArray (int length, TRAPS) { return TypeArrayKlass::cast(Universe::shortArrayKlassObj ())->allocate(length, CHECK_NULL); }

    50   static typeArrayOop    new_intArray   (int length, TRAPS) { return TypeArrayKlass::cast(Universe::intArrayKlassObj   ())->allocate(length, CHECK_NULL); }

    51   static typeArrayOop    new_longArray  (int length, TRAPS) { return TypeArrayKlass::cast(Universe::longArrayKlassObj  ())->allocate(length, CHECK_NULL); }

    53   // create java.lang.Object[]

    54   static objArrayOop     new_objectArray(int length, TRAPS)  {

    55     assert(Universe::objectArrayKlassObj() != NULL, "Too early?");

    56     return ObjArrayKlass::

    57       cast(Universe::objectArrayKlassObj())->allocate(length, CHECK_NULL);

    58   }

    60   static typeArrayOop    new_charArray           (const char* utf8_str,  TRAPS);

    61   static typeArrayOop    new_tenured_charArray(int length, TRAPS);

    63   static typeArrayOop    new_typeArray(BasicType type, int length, TRAPS);

    64   static typeArrayOop    new_typeArray_nozero(BasicType type, int length, TRAPS);

    65   static typeArrayOop    new_metaDataArray(int length, TRAPS);

    67   // Regular object arrays

    68   static objArrayOop     new_objArray(Klass* klass, int length, TRAPS);

    69 };

    71 #endif // SHARE_VM_MEMORY_OOPFACTORY_HPP

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

src/share/vm/memory/oopFactory.hpp@4c84d351cca9

src/share/vm/memory/oopFactory.hpp