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_GENERATION_HPP
26 #define SHARE_VM_MEMORY_GENERATION_HPP
27
28 #include "gc_implementation/shared/collectorCounters.hpp"
29 #include "memory/allocation.hpp"
30 #include "memory/memRegion.hpp"
31 #include "memory/referenceProcessor.hpp"
32 #include "memory/universe.hpp"
33 #include "memory/virtualspace.hpp"
34 #include "memory/watermark.hpp"
35 #include "runtime/mutex.hpp"
36 #include "runtime/perfData.hpp"
37
38 // A Generation models a heap area for similarly-aged objects.
39 // It will contain one ore more spaces holding the actual objects.
40 //
41 // The Generation class hierarchy:
42 //
43 // Generation - abstract base class
44 // - DefNewGeneration - allocation area (copy collected)
45 // - ParNewGeneration - a DefNewGeneration that is collected by
46 // several threads
47 // - CardGeneration - abstract class adding offset array behavior
48 // - TenuredGeneration - tenured (old object) space (markSweepCompact)
49 // - ConcurrentMarkSweepGeneration - Mostly Concurrent Mark Sweep Generation
50 // (Detlefs-Printezis refinement of
51 // Boehm-Demers-Schenker)
52 //
53 // The system configurations currently allowed are:
54 //
567 struct StatRecord {
568 int invocations;
569 elapsedTimer accumulated_time;
570 StatRecord() :
571 invocations(0),
572 accumulated_time(elapsedTimer()) {}
573 };
574 private:
575 StatRecord _stat_record;
576 public:
577 StatRecord* stat_record() { return &_stat_record; }
578
579 virtual void print_summary_info();
580 virtual void print_summary_info_on(outputStream* st);
581
582 // Performance Counter support
583 virtual void update_counters() = 0;
584 virtual CollectorCounters* counters() { return _gc_counters; }
585 };
586
587 #endif // SHARE_VM_MEMORY_GENERATION_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_GENERATION_HPP
26 #define SHARE_VM_GC_SHARED_GENERATION_HPP
27
28 #include "gc/shared/collectorCounters.hpp"
29 #include "gc/shared/referenceProcessor.hpp"
30 #include "gc/shared/watermark.hpp"
31 #include "memory/allocation.hpp"
32 #include "memory/memRegion.hpp"
33 #include "memory/universe.hpp"
34 #include "memory/virtualspace.hpp"
35 #include "runtime/mutex.hpp"
36 #include "runtime/perfData.hpp"
37
38 // A Generation models a heap area for similarly-aged objects.
39 // It will contain one ore more spaces holding the actual objects.
40 //
41 // The Generation class hierarchy:
42 //
43 // Generation - abstract base class
44 // - DefNewGeneration - allocation area (copy collected)
45 // - ParNewGeneration - a DefNewGeneration that is collected by
46 // several threads
47 // - CardGeneration - abstract class adding offset array behavior
48 // - TenuredGeneration - tenured (old object) space (markSweepCompact)
49 // - ConcurrentMarkSweepGeneration - Mostly Concurrent Mark Sweep Generation
50 // (Detlefs-Printezis refinement of
51 // Boehm-Demers-Schenker)
52 //
53 // The system configurations currently allowed are:
54 //
567 struct StatRecord {
568 int invocations;
569 elapsedTimer accumulated_time;
570 StatRecord() :
571 invocations(0),
572 accumulated_time(elapsedTimer()) {}
573 };
574 private:
575 StatRecord _stat_record;
576 public:
577 StatRecord* stat_record() { return &_stat_record; }
578
579 virtual void print_summary_info();
580 virtual void print_summary_info_on(outputStream* st);
581
582 // Performance Counter support
583 virtual void update_counters() = 0;
584 virtual CollectorCounters* counters() { return _gc_counters; }
585 };
586
587 #endif // SHARE_VM_GC_SHARED_GENERATION_HPP
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