src/share/vm/gc_implementation/g1/g1_specialized_oop_closures.hpp

Tue, 13 Apr 2010 13:52:10 -0700

author
jmasa
date
Tue, 13 Apr 2010 13:52:10 -0700
changeset 1822
0bfd3fb24150
parent 1696
0414c1049f15
child 1907
c18cbe5936b8
permissions
-rw-r--r--

6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
Summary: Ensure a full GC that clears SoftReferences before throwing an out-of-memory
Reviewed-by: ysr, jcoomes

     1 /*
     2  * Copyright 2001-2009 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 // The following OopClosure types get specialized versions of
    26 // "oop_oop_iterate" that invoke the closures' do_oop methods
    27 // non-virtually, using a mechanism defined in this file.  Extend these
    28 // macros in the obvious way to add specializations for new closures.
    30 // Forward declarations.
    31 enum G1Barrier {
    32   G1BarrierNone, G1BarrierRS, G1BarrierEvac
    33 };
    35 template<bool do_gen_barrier, G1Barrier barrier,
    36          bool do_mark_forwardee>
    37 class G1ParCopyClosure;
    38 class G1ParScanClosure;
    39 class G1ParPushHeapRSClosure;
    41 typedef G1ParCopyClosure<false, G1BarrierEvac, false> G1ParScanHeapEvacClosure;
    43 class FilterIntoCSClosure;
    44 class FilterOutOfRegionClosure;
    45 class FilterInHeapRegionAndIntoCSClosure;
    46 class FilterAndMarkInHeapRegionAndIntoCSClosure;
    48 #ifdef FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES
    49 #error "FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES already defined."
    50 #endif
    52 #define FURTHER_SPECIALIZED_OOP_OOP_ITERATE_CLOSURES(f) \
    53       f(G1ParScanHeapEvacClosure,_nv)                   \
    54       f(G1ParScanClosure,_nv)                           \
    55       f(G1ParPushHeapRSClosure,_nv)                     \
    56       f(FilterIntoCSClosure,_nv)                        \
    57       f(FilterOutOfRegionClosure,_nv)                   \
    58       f(FilterInHeapRegionAndIntoCSClosure,_nv)         \
    59       f(FilterAndMarkInHeapRegionAndIntoCSClosure,_nv)
    61 #ifdef FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES
    62 #error "FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES already defined."
    63 #endif
    65 #define FURTHER_SPECIALIZED_SINCE_SAVE_MARKS_CLOSURES(f)

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