jdk8-mips64-public/hotspot: src/share/vm/memory/resourceArea.cpp@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, 2010, 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/allocation.inline.hpp"

    27 #include "memory/resourceArea.hpp"

    28 #include "runtime/mutexLocker.hpp"

    29 #include "runtime/thread.inline.hpp"

    31 //------------------------------ResourceMark-----------------------------------

    32 debug_only(int ResourceArea::_warned;)      // to suppress multiple warnings

    34 // The following routines are declared in allocation.hpp and used everywhere:

    36 // Allocation in thread-local resource area

    37 extern char* resource_allocate_bytes(size_t size, AllocFailType alloc_failmode) {

    38   return Thread::current()->resource_area()->allocate_bytes(size, alloc_failmode);

    39 }

    40 extern char* resource_allocate_bytes(Thread* thread, size_t size, AllocFailType alloc_failmode) {

    41   return thread->resource_area()->allocate_bytes(size, alloc_failmode);

    42 }

    44 extern char* resource_reallocate_bytes( char *old, size_t old_size, size_t new_size, AllocFailType alloc_failmode){

    45   return (char*)Thread::current()->resource_area()->Arealloc(old, old_size, new_size, alloc_failmode);

    46 }

    48 extern void resource_free_bytes( char *old, size_t size ) {

    49   Thread::current()->resource_area()->Afree(old, size);

    50 }

    52 #ifdef ASSERT

    53 ResourceMark::ResourceMark(Thread *thread) {

    54   assert(thread == Thread::current(), "not the current thread");

    55   initialize(thread);

    56 }

    58 DeoptResourceMark::DeoptResourceMark(Thread *thread) {

    59   assert(thread == Thread::current(), "not the current thread");

    60   initialize(thread);

    61 }

    62 #endif

    65 //-------------------------------------------------------------------------------

    66 // Non-product code

    67 #ifndef PRODUCT

    69 void ResourceMark::free_malloced_objects() {

    70   Arena::free_malloced_objects(_chunk, _hwm, _max, _area->_hwm);

    71 }

    73 void DeoptResourceMark::free_malloced_objects() {

    74   Arena::free_malloced_objects(_chunk, _hwm, _max, _area->_hwm);

    75 }

    77 #endif

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

src/share/vm/memory/resourceArea.cpp@4c84d351cca9

src/share/vm/memory/resourceArea.cpp