jdk8-mips64-public/hotspot: src/share/vm/memory/resourceArea.cpp@5134fa1cfe63

7029036: Card-table verification hangs with all framework collectors, except G1, even before the first GC
Summary: When verifying clean card ranges, use memory-range-bounded iteration over oops of objects overlapping that range, thus avoiding the otherwise quadratic worst-case cost of scanning large object arrays.
Reviewed-by: jmasa, jwilhelm, tonyp

     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 #ifdef TARGET_OS_FAMILY_linux

    30 # include "thread_linux.inline.hpp"

    31 #endif

    32 #ifdef TARGET_OS_FAMILY_solaris

    33 # include "thread_solaris.inline.hpp"

    34 #endif

    35 #ifdef TARGET_OS_FAMILY_windows

    36 # include "thread_windows.inline.hpp"

    37 #endif

    39 //------------------------------ResourceMark-----------------------------------

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

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

    44 // Allocation in thread-local resource area

    45 extern char* resource_allocate_bytes(size_t size) {

    46   return Thread::current()->resource_area()->allocate_bytes(size);

    47 }

    48 extern char* resource_allocate_bytes(Thread* thread, size_t size) {

    49   return thread->resource_area()->allocate_bytes(size);

    50 }

    52 extern char* resource_reallocate_bytes( char *old, size_t old_size, size_t new_size){

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

    54 }

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

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

    58 }

    60 #ifdef ASSERT

    61 ResourceMark::ResourceMark(Thread *thread) {

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

    63   initialize(thread);

    64 }

    66 DeoptResourceMark::DeoptResourceMark(Thread *thread) {

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

    68   initialize(thread);

    69 }

    70 #endif

    73 //-------------------------------------------------------------------------------

    74 // Non-product code

    75 #ifndef PRODUCT

    77 void ResourceMark::free_malloced_objects() {

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

    79 }

    81 void DeoptResourceMark::free_malloced_objects() {

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

    83 }

    85 #endif

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

src/share/vm/memory/resourceArea.cpp@5134fa1cfe63

src/share/vm/memory/resourceArea.cpp