1/*
2 * Copyright (c) 2019, 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#include "precompiled.hpp"
25#include "gc/shenandoah/shenandoahHeap.hpp"
26#include "gc/shenandoah/shenandoahHeapRegion.hpp"
27#include "gc/shenandoah/shenandoahJfrSupport.hpp"
28#include "jfr/jfrEvents.hpp"
29#if INCLUDE_JFR
30#include "jfr/metadata/jfrSerializer.hpp"
31#endif
32
33#if INCLUDE_JFR
34
35class ShenandoahHeapRegionStateConstant : public JfrSerializer {
36 friend class ShenandoahHeapRegion;
37public:
38 virtual void serialize(JfrCheckpointWriter& writer) {
39 static const u4 nof_entries = ShenandoahHeapRegion::region_states_num();
40 writer.write_count(nof_entries);
41 for (u4 i = 0; i < nof_entries; ++i) {
42 writer.write_key(i);
43 writer.write(ShenandoahHeapRegion::region_state_to_string((ShenandoahHeapRegion::RegionState)i));
44 }
45 }
46};
47
48void ShenandoahJFRSupport::register_jfr_type_serializers() {
49 JfrSerializer::register_serializer(TYPE_SHENANDOAHHEAPREGIONSTATE,
50 false,
51 true,
52 new ShenandoahHeapRegionStateConstant());
53}
54#endif
55
56class ShenandoahDumpHeapRegionInfoClosure : public ShenandoahHeapRegionClosure {
57public:
58 virtual void heap_region_do(ShenandoahHeapRegion* r) {
59 EventShenandoahHeapRegionInformation evt;
60 evt.set_index((unsigned)r->region_number());
61 evt.set_state((u8)r->state());
62 evt.set_start((uintptr_t)r->bottom());
63 evt.set_used(r->used());
64 evt.commit();
65 }
66};
67
68void VM_ShenandoahSendHeapRegionInfoEvents::doit() {
69 ShenandoahDumpHeapRegionInfoClosure c;
70 ShenandoahHeap::heap()->heap_region_iterate(&c);
71}
72