1/*
2 * Copyright (c) 2001, 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.
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.
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23 */
24
25#ifndef SHARE_GC_G1_G1VMOPERATIONS_HPP
26#define SHARE_GC_G1_G1VMOPERATIONS_HPP
27
28#include "gc/shared/gcId.hpp"
29#include "gc/shared/gcVMOperations.hpp"
30
31// VM_operations for the G1 collector.
32// VM_GC_Operation:
33// - VM_G1Concurrent
34// - VM_G1CollectForAllocation
35// - VM_G1CollectFull
36
37class VM_G1CollectFull : public VM_GC_Operation {
38 bool _gc_succeeded;
39
40public:
41 VM_G1CollectFull(uint gc_count_before,
42 uint full_gc_count_before,
43 GCCause::Cause cause) :
44 VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true),
45 _gc_succeeded(false) { }
46 virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
47 virtual void doit();
48 bool gc_succeeded() { return _gc_succeeded; }
49};
50
51class VM_G1CollectForAllocation : public VM_CollectForAllocation {
52 bool _gc_succeeded;
53
54 bool _should_initiate_conc_mark;
55 bool _should_retry_gc;
56 double _target_pause_time_ms;
57 uint _old_marking_cycles_completed_before;
58
59public:
60 VM_G1CollectForAllocation(size_t word_size,
61 uint gc_count_before,
62 GCCause::Cause gc_cause,
63 bool should_initiate_conc_mark,
64 double target_pause_time_ms);
65 virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
66 virtual bool doit_prologue();
67 virtual void doit();
68 virtual void doit_epilogue();
69 bool should_retry_gc() const { return _should_retry_gc; }
70 bool gc_succeeded() { return _gc_succeeded; }
71};
72
73// Concurrent G1 stop-the-world operations such as remark and cleanup.
74class VM_G1Concurrent : public VM_Operation {
75 VoidClosure* _cl;
76 const char* _message;
77 uint _gc_id;
78
79public:
80 VM_G1Concurrent(VoidClosure* cl, const char* message) :
81 _cl(cl), _message(message), _gc_id(GCId::current()) { }
82 virtual VMOp_Type type() const { return VMOp_G1Concurrent; }
83 virtual void doit();
84 virtual bool doit_prologue();
85 virtual void doit_epilogue();
86};
87
88#endif // SHARE_GC_G1_G1VMOPERATIONS_HPP
89