1 /*
2 * Copyright (c) 2001, 2016, 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.
22 *
23 */
24
25 #ifndef SHARE_VM_GC_G1_VM_OPERATIONS_G1_HPP
26 #define SHARE_VM_GC_G1_VM_OPERATIONS_G1_HPP
27
28 #include "gc/g1/g1AllocationContext.hpp"
29 #include "gc/shared/gcId.hpp"
30 #include "gc/shared/vmGCOperations.hpp"
31
32 // VM_operations for the G1 collector.
33 // VM_GC_Operation:
34 // - VM_CGC_Operation
35 // - VM_G1CollectFull
36 // - VM_G1OperationWithAllocRequest
37 // - VM_G1CollectForAllocation
38 // - VM_G1IncCollectionPause
39
40 class VM_G1OperationWithAllocRequest : public VM_CollectForAllocation {
41 protected:
42 bool _pause_succeeded;
43 AllocationContext_t _allocation_context;
44
45 public:
46 VM_G1OperationWithAllocRequest(uint gc_count_before,
47 size_t word_size,
48 GCCause::Cause gc_cause)
49 : VM_CollectForAllocation(word_size, gc_count_before, gc_cause),
50 _pause_succeeded(false) {}
51 bool pause_succeeded() { return _pause_succeeded; }
52 void set_allocation_context(AllocationContext_t context) { _allocation_context = context; }
53 AllocationContext_t allocation_context() { return _allocation_context; }
54 };
55
56 class VM_G1CollectFull: public VM_GC_Operation {
57 public:
58 VM_G1CollectFull(uint gc_count_before,
59 uint full_gc_count_before,
60 GCCause::Cause cause)
61 : VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true) { }
62 virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
63 virtual void doit();
64 virtual const char* name() const {
65 return "full garbage-first collection";
66 }
67 };
68
69 class VM_G1CollectForAllocation: public VM_G1OperationWithAllocRequest {
70 public:
71 VM_G1CollectForAllocation(uint gc_count_before,
72 size_t word_size);
73 virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
74 virtual void doit();
75 virtual const char* name() const {
76 return "garbage-first collection to satisfy allocation";
77 }
78 };
79
80 class VM_G1IncCollectionPause: public VM_G1OperationWithAllocRequest {
81 private:
82 bool _should_initiate_conc_mark;
83 bool _should_retry_gc;
84 double _target_pause_time_ms;
85 uint _old_marking_cycles_completed_before;
86 public:
87 VM_G1IncCollectionPause(uint gc_count_before,
88 size_t word_size,
89 bool should_initiate_conc_mark,
90 double target_pause_time_ms,
91 GCCause::Cause gc_cause);
92 virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; }
93 virtual bool doit_prologue();
94 virtual void doit();
95 virtual void doit_epilogue();
96 virtual const char* name() const {
97 return "garbage-first incremental collection pause";
98 }
99 bool should_retry_gc() const { return _should_retry_gc; }
100 };
101
102 // Concurrent GC stop-the-world operations such as remark and cleanup;
103 // consider sharing these with CMS's counterparts.
104 class VM_CGC_Operation: public VM_Operation {
105 VoidClosure* _cl;
106 const char* _printGCMessage;
107 uint _gc_id;
108
109 public:
110 VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg)
111 : _cl(cl), _printGCMessage(printGCMsg), _gc_id(GCId::current()) {}
112 virtual VMOp_Type type() const { return VMOp_CGC_Operation; }
113 virtual void doit();
114 virtual bool doit_prologue();
115 virtual void doit_epilogue();
116 virtual const char* name() const {
117 return "concurrent gc";
118 }
119 };
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1 /*
2 * Copyright (c) 2001, 2018, 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.
22 *
23 */
24
25 #ifndef SHARE_VM_GC_G1_VM_OPERATIONS_G1_HPP
26 #define SHARE_VM_GC_G1_VM_OPERATIONS_G1_HPP
27
28 #include "gc/g1/g1AllocationContext.hpp"
29 #include "gc/shared/gcId.hpp"
30 #include "gc/shared/vmGCOperations.hpp"
31
32 // VM_operations for the G1 collector.
33 // VM_GC_Operation:
34 // - VM_CGC_Operation
35 // - VM_G1CollectForAllocation
36 // - VM_G1CollectFull
37
38 class VM_G1CollectFull: public VM_GC_Operation {
39 public:
40 VM_G1CollectFull(uint gc_count_before,
41 uint full_gc_count_before,
42 GCCause::Cause cause)
43 : VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true) { }
44 virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
45 virtual void doit();
46 virtual const char* name() const {
47 return "G1 Full collection";
48 }
49 };
50
51 class VM_G1CollectForAllocation: public VM_CollectForAllocation {
52 private:
53 bool _pause_succeeded;
54 AllocationContext_t _allocation_context;
55
56 bool _should_initiate_conc_mark;
57 bool _should_retry_gc;
58 double _target_pause_time_ms;
59 uint _old_marking_cycles_completed_before;
60 public:
61 VM_G1CollectForAllocation(size_t word_size,
62 uint gc_count_before,
63 GCCause::Cause gc_cause,
64 bool should_initiate_conc_mark,
65 double target_pause_time_ms,
66 AllocationContext_t allocation_context);
67 virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
68 virtual bool doit_prologue();
69 virtual void doit();
70 virtual void doit_epilogue();
71 virtual const char* name() const {
72 return "G1 collect for allocation";
73 }
74 bool should_retry_gc() const { return _should_retry_gc; }
75 bool pause_succeeded() { return _pause_succeeded; }
76 };
77
78 // Concurrent GC stop-the-world operations such as remark and cleanup;
79 // consider sharing these with CMS's counterparts.
80 class VM_CGC_Operation: public VM_Operation {
81 VoidClosure* _cl;
82 const char* _printGCMessage;
83 uint _gc_id;
84
85 public:
86 VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg)
87 : _cl(cl), _printGCMessage(printGCMsg), _gc_id(GCId::current()) {}
88 virtual VMOp_Type type() const { return VMOp_CGC_Operation; }
89 virtual void doit();
90 virtual bool doit_prologue();
91 virtual void doit_epilogue();
92 virtual const char* name() const {
93 return "concurrent gc";
94 }
95 };
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