jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/concurrentMarkSweep/cmsOopClosures.inline.hpp@4c1b88a53c74

8046670: Make CMS metadata aware closures applicable for other collectors
Reviewed-by: ehelin, mgerdin

     1 /*

     2  * Copyright (c) 2007, 2012, 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

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    25 #ifndef SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_INLINE_HPP

    26 #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_INLINE_HPP

    28 #include "gc_implementation/concurrentMarkSweep/cmsOopClosures.hpp"

    29 #include "gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp"

    30 #include "oops/oop.inline.hpp"

    32 // Trim our work_queue so its length is below max at return

    33 inline void Par_MarkRefsIntoAndScanClosure::trim_queue(uint max) {

    34   while (_work_queue->size() > max) {

    35     oop newOop;

    36     if (_work_queue->pop_local(newOop)) {

    37       assert(newOop->is_oop(), "Expected an oop");

    38       assert(_bit_map->isMarked((HeapWord*)newOop),

    39              "only grey objects on this stack");

    40       // iterate over the oops in this oop, marking and pushing

    41       // the ones in CMS heap (i.e. in _span).

    42       newOop->oop_iterate(&_par_pushAndMarkClosure);

    43     }

    44   }

    45 }

    47 // MetadataAwareOopClosure and MetadataAwareOopsInGenClosure are duplicated,

    48 // until we get rid of OopsInGenClosure.

    50 inline void MetadataAwareOopsInGenClosure::do_klass_nv(Klass* k) {

    51   ClassLoaderData* cld = k->class_loader_data();

    52   do_class_loader_data(cld);

    53 }

    54 inline void MetadataAwareOopsInGenClosure::do_klass(Klass* k) { do_klass_nv(k); }

    56 inline void MetadataAwareOopsInGenClosure::do_class_loader_data(ClassLoaderData* cld) {

    57   assert(_klass_closure._oop_closure == this, "Must be");

    59   bool claim = true;  // Must claim the class loader data before processing.

    60   cld->oops_do(_klass_closure._oop_closure, &_klass_closure, claim);

    61 }

    63 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_INLINE_HPP

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