1 /*
2 * Copyright (c) 2013, 2015, Red Hat, Inc. and/or its affiliates.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP
25 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP
26
27 #include "gc_implementation/shenandoah/shenandoahPhaseTimings.hpp"
28 #include "gc_implementation/shenandoah/shenandoahHeap.hpp"
29 #include "memory/collectorPolicy.hpp"
30 #include "runtime/arguments.hpp"
31 #include "utilities/numberSeq.hpp"
32
33 class ShenandoahCollectionSet;
34 class ShenandoahFreeSet;
35 class ShenandoahHeap;
36 class ShenandoahHeuristics;
37
38 class STWGCTimer;
39 class ConcurrentGCTimer;
40 class outputStream;
41
42 class ShenandoahCollectorPolicy: public CollectorPolicy {
43 private:
44 size_t _success_concurrent_gcs;
45 size_t _success_degenerated_gcs;
46 size_t _success_full_gcs;
47 size_t _alloc_failure_degenerated;
48 size_t _alloc_failure_degenerated_upgrade_to_full;
49 size_t _alloc_failure_full;
50 size_t _explicit_concurrent;
51 size_t _explicit_full;
52 size_t _degen_points[ShenandoahHeap::_DEGENERATED_LIMIT];
53
54 ShenandoahSharedFlag _in_shutdown;
55
56 ShenandoahTracer* _tracer;
57
58 size_t _cycle_counter;
59
60
61 public:
62 ShenandoahCollectorPolicy();
63
64 void post_heap_initialize() {};
65
66 BarrierSet::Name barrier_set_name();
67
68 HeapWord* mem_allocate_work(size_t size,
69 bool is_tlab,
70 bool* gc_overhead_limit_was_exceeded);
71
72 HeapWord* satisfy_failed_allocation(size_t size, bool is_tlab);
73
74 void initialize_alignments();
75
76 // TODO: This is different from gc_end: that one encompasses one VM operation.
77 // These two encompass the entire cycle.
78 void record_cycle_start();
79
80 void record_success_concurrent();
81 void record_success_degenerated();
82 void record_success_full();
83 void record_alloc_failure_to_degenerated(ShenandoahHeap::ShenandoahDegenPoint point);
84 void record_alloc_failure_to_full();
85 void record_degenerated_upgrade_to_full();
86 void record_explicit_to_concurrent();
87 void record_explicit_to_full();
88
89 void record_shutdown();
90 bool is_at_shutdown();
91
92 ShenandoahTracer* tracer() {return _tracer;}
93
94 size_t cycle_counter() const;
95
96 void print_gc_stats(outputStream* out) const;
97 };
98
99
100 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP
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1 /*
2 * Copyright (c) 2013, 2018, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP
25 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP
26
27 #include "memory/collectorPolicy.hpp"
28 #include "gc_implementation/shenandoah/shenandoahHeap.hpp"
29 #include "gc_implementation/shenandoah/shenandoahTracer.hpp"
30 #include "utilities/ostream.hpp"
31
32 class STWGCTimer;
33 class ConcurrentGCTimer;
34
35 class ShenandoahCollectorPolicy: public CollectorPolicy {
36 private:
37 size_t _success_concurrent_gcs;
38 size_t _success_degenerated_gcs;
39 size_t _success_full_gcs;
40 size_t _alloc_failure_degenerated;
41 size_t _alloc_failure_degenerated_upgrade_to_full;
42 size_t _alloc_failure_full;
43 size_t _explicit_concurrent;
44 size_t _explicit_full;
45 size_t _implicit_concurrent;
46 size_t _implicit_full;
47 size_t _degen_points[ShenandoahHeap::_DEGENERATED_LIMIT];
48
49 ShenandoahSharedFlag _in_shutdown;
50
51 ShenandoahTracer* _tracer;
52
53 size_t _cycle_counter;
54
55 public:
56 ShenandoahCollectorPolicy();
57
58 void post_heap_initialize() {};
59
60 BarrierSet::Name barrier_set_name();
61
62 HeapWord* mem_allocate_work(size_t size,
63 bool is_tlab,
64 bool* gc_overhead_limit_was_exceeded);
65
66 HeapWord* satisfy_failed_allocation(size_t size, bool is_tlab);
67
68 MetaWord* satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,
69 size_t size,
70 Metaspace::MetadataType mdtype);
71
72 void initialize_alignments();
73
74 // TODO: This is different from gc_end: that one encompasses one VM operation.
75 // These two encompass the entire cycle.
76 void record_cycle_start();
77
78 void record_success_concurrent();
79 void record_success_degenerated();
80 void record_success_full();
81 void record_alloc_failure_to_degenerated(ShenandoahHeap::ShenandoahDegenPoint point);
82 void record_alloc_failure_to_full();
83 void record_degenerated_upgrade_to_full();
84 void record_explicit_to_concurrent();
85 void record_explicit_to_full();
86 void record_implicit_to_concurrent();
87 void record_implicit_to_full();
88
89 void record_shutdown();
90 bool is_at_shutdown();
91
92 ShenandoahTracer* tracer() {return _tracer;}
93
94 size_t cycle_counter() const;
95
96 void print_gc_stats(outputStream* out) const;
97 };
98
99 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHCOLLECTORPOLICY_HPP
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