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_MEMORY_GENCOLLECTEDHEAP_HPP
26 #define SHARE_VM_MEMORY_GENCOLLECTEDHEAP_HPP
27
28 #include "gc_implementation/shared/adaptiveSizePolicy.hpp"
29 #include "gc_interface/collectedHeap.hpp"
30 #include "memory/collectorPolicy.hpp"
31 #include "memory/generation.hpp"
32
33 class SubTasksDone;
34 class FlexibleWorkGang;
35
36 // A "GenCollectedHeap" is a CollectedHeap that uses generational
37 // collection. It has two generations, young and old.
38 class GenCollectedHeap : public CollectedHeap {
39 friend class GenCollectorPolicy;
40 friend class Generation;
41 friend class DefNewGeneration;
42 friend class TenuredGeneration;
43 friend class ConcurrentMarkSweepGeneration;
44 friend class CMSCollector;
45 friend class GenMarkSweep;
46 friend class VM_GenCollectForAllocation;
47 friend class VM_GenCollectFull;
48 friend class VM_GenCollectFullConcurrent;
49 friend class VM_GC_HeapInspection;
50 friend class VM_HeapDumper;
51 friend class HeapInspection;
498 // Perform a full collection of the first max_level+1 generations.
499 // This is the low level interface used by the public versions of
500 // collect() and collect_locked(). Caller holds the Heap_lock on entry.
501 void collect_locked(GCCause::Cause cause, int max_level);
502
503 // Returns success or failure.
504 bool create_cms_collector();
505
506 // In support of ExplicitGCInvokesConcurrent functionality
507 bool should_do_concurrent_full_gc(GCCause::Cause cause);
508 void collect_mostly_concurrent(GCCause::Cause cause);
509
510 // Save the tops of the spaces in all generations
511 void record_gen_tops_before_GC() PRODUCT_RETURN;
512
513 protected:
514 void gc_prologue(bool full);
515 void gc_epilogue(bool full);
516 };
517
518 #endif // SHARE_VM_MEMORY_GENCOLLECTEDHEAP_HPP
|
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_SHARED_GENCOLLECTEDHEAP_HPP
26 #define SHARE_VM_GC_SHARED_GENCOLLECTEDHEAP_HPP
27
28 #include "gc/shared/adaptiveSizePolicy.hpp"
29 #include "gc/shared/collectedHeap.hpp"
30 #include "gc/shared/collectorPolicy.hpp"
31 #include "gc/shared/generation.hpp"
32
33 class SubTasksDone;
34 class FlexibleWorkGang;
35
36 // A "GenCollectedHeap" is a CollectedHeap that uses generational
37 // collection. It has two generations, young and old.
38 class GenCollectedHeap : public CollectedHeap {
39 friend class GenCollectorPolicy;
40 friend class Generation;
41 friend class DefNewGeneration;
42 friend class TenuredGeneration;
43 friend class ConcurrentMarkSweepGeneration;
44 friend class CMSCollector;
45 friend class GenMarkSweep;
46 friend class VM_GenCollectForAllocation;
47 friend class VM_GenCollectFull;
48 friend class VM_GenCollectFullConcurrent;
49 friend class VM_GC_HeapInspection;
50 friend class VM_HeapDumper;
51 friend class HeapInspection;
498 // Perform a full collection of the first max_level+1 generations.
499 // This is the low level interface used by the public versions of
500 // collect() and collect_locked(). Caller holds the Heap_lock on entry.
501 void collect_locked(GCCause::Cause cause, int max_level);
502
503 // Returns success or failure.
504 bool create_cms_collector();
505
506 // In support of ExplicitGCInvokesConcurrent functionality
507 bool should_do_concurrent_full_gc(GCCause::Cause cause);
508 void collect_mostly_concurrent(GCCause::Cause cause);
509
510 // Save the tops of the spaces in all generations
511 void record_gen_tops_before_GC() PRODUCT_RETURN;
512
513 protected:
514 void gc_prologue(bool full);
515 void gc_epilogue(bool full);
516 };
517
518 #endif // SHARE_VM_GC_SHARED_GENCOLLECTEDHEAP_HPP
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