|
342
|
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 */
|
|
|
24
|
|
|
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
|
|
|
32
|
|
|
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 };
|
|
|
49
|
|
|
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 };
|
|
|
68
|
|
|
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 };
|
|
|
79
|
|
|
80 // Concurrent GC stop-the-world operations such as initial and final mark;
|
|
|
81 // consider sharing these with CMS's counterparts.
|
|
|
82 class VM_CGC_Operation: public VM_Operation {
|
|
|
83 VoidClosure* _cl;
|
|
|
84 const char* _printGCMessage;
|
|
|
85 public:
|
|
|
86 VM_CGC_Operation(VoidClosure* cl, const char *printGCMsg) :
|
|
|
87 _cl(cl),
|
|
|
88 _printGCMessage(printGCMsg)
|
|
|
89 {}
|
|
|
90
|
|
|
91 ~VM_CGC_Operation() {}
|
|
|
92
|
|
|
93 virtual VMOp_Type type() const { return VMOp_CGC_Operation; }
|
|
|
94 virtual void doit();
|
|
|
95 virtual bool doit_prologue();
|
|
|
96 virtual void doit_epilogue();
|
|
|
97 virtual const char* name() const {
|
|
|
98 return "concurrent gc";
|
|
|
99 }
|
|
|
100 };
|
