1 /*
2 * Copyright (c) 2007, 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 */
24
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_HPP
27
28 #include "memory/genOopClosures.hpp"
29 #include "memory/iterator.hpp"
30
31 /////////////////////////////////////////////////////////////////
32 // Closures used by ConcurrentMarkSweepGeneration's collector
33 /////////////////////////////////////////////////////////////////
34 class ConcurrentMarkSweepGeneration;
35 class CMSBitMap;
36 class CMSMarkStack;
37 class CMSCollector;
38 class MarkFromRootsClosure;
39 class Par_MarkFromRootsClosure;
40
41 // Decode the oop and call do_oop on it.
42 #define DO_OOP_WORK_DEFN \
43 void do_oop(oop obj); \
44 template <class T> inline void do_oop_work(T* p) { \
45 T heap_oop = oopDesc::load_heap_oop(p); \
46 if (!oopDesc::is_null(heap_oop)) { \
47 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); \
48 do_oop(obj); \
342 // reference processing is parallel; the only difference
343 // is in the do_oop method.
344 class CMSParKeepAliveClosure: public MetadataAwareOopClosure {
345 private:
346 MemRegion _span;
347 OopTaskQueue* _work_queue;
348 CMSBitMap* _bit_map;
349 CMSInnerParMarkAndPushClosure
350 _mark_and_push;
351 const uint _low_water_mark;
352 void trim_queue(uint max);
353 protected:
354 DO_OOP_WORK_DEFN
355 public:
356 CMSParKeepAliveClosure(CMSCollector* collector, MemRegion span,
357 CMSBitMap* bit_map, OopTaskQueue* work_queue);
358 virtual void do_oop(oop* p);
359 virtual void do_oop(narrowOop* p);
360 };
361
362 #endif // SHARE_VM_GC_IMPLEMENTATION_CONCURRENTMARKSWEEP_CMSOOPCLOSURES_HPP
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1 /*
2 * Copyright (c) 2007, 2015, 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 */
24
25 #ifndef SHARE_VM_GC_CMS_CMSOOPCLOSURES_HPP
26 #define SHARE_VM_GC_CMS_CMSOOPCLOSURES_HPP
27
28 #include "gc/shared/genOopClosures.hpp"
29 #include "memory/iterator.hpp"
30
31 /////////////////////////////////////////////////////////////////
32 // Closures used by ConcurrentMarkSweepGeneration's collector
33 /////////////////////////////////////////////////////////////////
34 class ConcurrentMarkSweepGeneration;
35 class CMSBitMap;
36 class CMSMarkStack;
37 class CMSCollector;
38 class MarkFromRootsClosure;
39 class Par_MarkFromRootsClosure;
40
41 // Decode the oop and call do_oop on it.
42 #define DO_OOP_WORK_DEFN \
43 void do_oop(oop obj); \
44 template <class T> inline void do_oop_work(T* p) { \
45 T heap_oop = oopDesc::load_heap_oop(p); \
46 if (!oopDesc::is_null(heap_oop)) { \
47 oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); \
48 do_oop(obj); \
342 // reference processing is parallel; the only difference
343 // is in the do_oop method.
344 class CMSParKeepAliveClosure: public MetadataAwareOopClosure {
345 private:
346 MemRegion _span;
347 OopTaskQueue* _work_queue;
348 CMSBitMap* _bit_map;
349 CMSInnerParMarkAndPushClosure
350 _mark_and_push;
351 const uint _low_water_mark;
352 void trim_queue(uint max);
353 protected:
354 DO_OOP_WORK_DEFN
355 public:
356 CMSParKeepAliveClosure(CMSCollector* collector, MemRegion span,
357 CMSBitMap* bit_map, OopTaskQueue* work_queue);
358 virtual void do_oop(oop* p);
359 virtual void do_oop(narrowOop* p);
360 };
361
362 #endif // SHARE_VM_GC_CMS_CMSOOPCLOSURES_HPP
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