1/*
2 * Copyright (c) 2018, 2019, 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.
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23 */
24
25#ifndef SHARE_GC_SHARED_WEAKPROCESSORPHASES_HPP
26#define SHARE_GC_SHARED_WEAKPROCESSORPHASES_HPP
27
28#include "memory/allocation.hpp"
29#include "utilities/globalDefinitions.hpp"
30#include "utilities/macros.hpp"
31
32class BoolObjectClosure;
33class OopClosure;
34class OopStorage;
35
36class WeakProcessorPhases : AllStatic {
37public:
38 typedef void (*Processor)(BoolObjectClosure*, OopClosure*);
39
40 enum Phase {
41 // Serial phases.
42 JVMTI_ONLY(jvmti COMMA)
43 JFR_ONLY(jfr COMMA)
44
45 // OopStorage phases.
46 jni,
47 stringtable,
48 resolved_method_table,
49 vm
50 };
51
52 static const uint serial_phase_start = 0;
53 static const uint serial_phase_count = jni;
54 static const uint oop_storage_phase_start = serial_phase_count;
55 static const uint oop_storage_phase_count = (vm + 1) - oop_storage_phase_start;
56 static const uint phase_count = serial_phase_count + oop_storage_phase_count;
57
58 static Phase phase(uint value);
59 static uint index(Phase phase);
60 // Indexes relative to the corresponding phase_start constant.
61 static uint serial_index(Phase phase);
62 static uint oop_storage_index(Phase phase);
63
64 static bool is_serial(Phase phase);
65 static bool is_oop_storage(Phase phase);
66
67 static const char* description(Phase phase);
68 static Processor processor(Phase phase); // Precondition: is_serial(phase)
69 static OopStorage* oop_storage(Phase phase); // Precondition: is_oop_storage(phase)
70
71 static bool is_stringtable(Phase phase);
72 static bool is_resolved_method_table(Phase phase);
73};
74
75typedef WeakProcessorPhases::Phase WeakProcessorPhase;
76
77#define FOR_EACH_WEAK_PROCESSOR_PHASE(P) \
78 for (WeakProcessorPhase P = static_cast<WeakProcessorPhase>(0); \
79 static_cast<uint>(P) < WeakProcessorPhases::phase_count; \
80 P = static_cast<WeakProcessorPhase>(static_cast<uint>(P) + 1))
81
82#define FOR_EACH_WEAK_PROCESSOR_OOP_STORAGE_PHASE(P) \
83 for (WeakProcessorPhase P = static_cast<WeakProcessorPhase>(WeakProcessorPhases::oop_storage_phase_start); \
84 static_cast<uint>(P) < (WeakProcessorPhases::oop_storage_phase_start + \
85 WeakProcessorPhases::oop_storage_phase_count); \
86 P = static_cast<WeakProcessorPhase>(static_cast<uint>(P) + 1))
87
88#endif // SHARE_GC_SHARED_WEAKPROCESSORPHASES_HPP
89