Mercurial > jdk8-mips64-public > hotspot / file revision
src/share/vm/gc_implementation/g1/vm_operations_g1.hpp@58054a18d735
src/share/vm/gc_implementation/g1/vm_operations_g1.hpp
Fri, 06 Feb 2009 01:38:50 +0300
- author
- apetrusenko
- date
- Fri, 06 Feb 2009 01:38:50 +0300
- changeset 980
- 58054a18d735
- parent 777
- 37f87013dfd8
- child 1112
- 96b229c54d1e
- permissions
- -rw-r--r--
6484959: G1: introduce survivor spaces
6797754: G1: combined bugfix
Summary: Implemented a policy to control G1 survivor space parameters.
Reviewed-by: tonyp, iveresov
1 /*
2 * Copyright 2001-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
25 // VM_operations for the G1 collector.
26 // VM_GC_Operation:
27 // - VM_CGC_Operation
28 // - VM_G1CollectFull
29 // - VM_G1CollectForAllocation
30 // - VM_G1IncCollectionPause
31 // - VM_G1PopRegionCollectionPause
33 class VM_G1CollectFull: public VM_GC_Operation {
34 private:
35 public:
36 VM_G1CollectFull(int gc_count_before,
37 GCCause::Cause gc_cause)
38 : VM_GC_Operation(gc_count_before)
39 {
40 _gc_cause = gc_cause;
41 }
42 ~VM_G1CollectFull() {}
43 virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
44 virtual void doit();
45 virtual const char* name() const {
46 return "full garbage-first collection";
47 }
48 };
50 class VM_G1CollectForAllocation: public VM_GC_Operation {
51 private:
52 HeapWord* _res;
53 size_t _size; // size of object to be allocated
54 public:
55 VM_G1CollectForAllocation(size_t size, int gc_count_before)
56 : VM_GC_Operation(gc_count_before) {
57 _size = size;
58 _res = NULL;
59 }
60 ~VM_G1CollectForAllocation() {}
61 virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
62 virtual void doit();
63 virtual const char* name() const {
64 return "garbage-first collection to satisfy allocation";
65 }
66 HeapWord* result() { return _res; }
67 };
69 class VM_G1IncCollectionPause: public VM_GC_Operation {
70 public:
71 VM_G1IncCollectionPause(int gc_count_before) :
72 VM_GC_Operation(gc_count_before) {}
73 virtual VMOp_Type type() const { return VMOp_G1IncCollectionPause; }
74 virtual void doit();
75 virtual const char* name() const {
76 return "garbage-first incremental collection pause";
77 }
78 };
80 class VM_G1PopRegionCollectionPause: public VM_GC_Operation {
81 HeapRegion* _pop_region;
82 public:
83 VM_G1PopRegionCollectionPause(int gc_count_before, HeapRegion* pop_region) :
84 VM_GC_Operation(gc_count_before),
85 _pop_region(pop_region)
86 {}
87 virtual VMOp_Type type() const { return VMOp_G1PopRegionCollectionPause; }
88 virtual void doit();
89 virtual const char* name() const {
90 return "garbage-first popular region collection pause";
91 }
92 };
94 // Concurrent GC stop-the-world operations such as initial and final mark;
95 // consider sharing these with CMS's counterparts.
96 class VM_CGC_Operation: public VM_Operation {
97 VoidClosure* _cl;
98 const char* _printGCMessage;
99 public:
100 VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg) :
101 _cl(cl),
102 _printGCMessage(printGCMsg)
103 {}
105 ~VM_CGC_Operation() {}
107 virtual VMOp_Type type() const { return VMOp_CGC_Operation; }
108 virtual void doit();
109 virtual bool doit_prologue();
110 virtual void doit_epilogue();
111 virtual const char* name() const {
112 return "concurrent gc";
113 }
114 };
