author | coleenp |
Sun, 13 Apr 2008 17:43:42 -0400 | |
changeset 360 | 21d113ecbf6a |
parent 1 | 489c9b5090e2 |
child 670 | ddf3e9583f2f |
child 1374 | 4c24294029a9 |
permissions | -rw-r--r-- |
1 | 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 |
class Generation; |
|
26 |
class HeapWord; |
|
27 |
class CardTableRS; |
|
28 |
class CardTableModRefBS; |
|
29 |
class DefNewGeneration; |
|
30 |
||
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
31 |
template<class E> class GenericTaskQueue; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
32 |
typedef GenericTaskQueue<oop> OopTaskQueue; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
33 |
template<class E> class GenericTaskQueueSet; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
34 |
typedef GenericTaskQueueSet<oop> OopTaskQueueSet; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
35 |
|
1 | 36 |
// Closure for iterating roots from a particular generation |
37 |
// Note: all classes deriving from this MUST call this do_barrier |
|
38 |
// method at the end of their own do_oop method! |
|
39 |
// Note: no do_oop defined, this is an abstract class. |
|
40 |
||
41 |
class OopsInGenClosure : public OopClosure { |
|
42 |
private: |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
43 |
Generation* _orig_gen; // generation originally set in ctor |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
44 |
Generation* _gen; // generation being scanned |
1 | 45 |
|
46 |
protected: |
|
47 |
// Some subtypes need access. |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
48 |
HeapWord* _gen_boundary; // start of generation |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
49 |
CardTableRS* _rs; // remembered set |
1 | 50 |
|
51 |
// For assertions |
|
52 |
Generation* generation() { return _gen; } |
|
53 |
CardTableRS* rs() { return _rs; } |
|
54 |
||
55 |
// Derived classes that modify oops so that they might be old-to-young |
|
56 |
// pointers must call the method below. |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
57 |
template <class T> void do_barrier(T* p); |
1 | 58 |
|
59 |
public: |
|
60 |
OopsInGenClosure() : OopClosure(NULL), |
|
61 |
_orig_gen(NULL), _gen(NULL), _gen_boundary(NULL), _rs(NULL) {}; |
|
62 |
||
63 |
OopsInGenClosure(Generation* gen); |
|
64 |
void set_generation(Generation* gen); |
|
65 |
||
66 |
void reset_generation() { _gen = _orig_gen; } |
|
67 |
||
68 |
// Problem with static closures: must have _gen_boundary set at some point, |
|
69 |
// but cannot do this until after the heap is initialized. |
|
70 |
void set_orig_generation(Generation* gen) { |
|
71 |
_orig_gen = gen; |
|
72 |
set_generation(gen); |
|
73 |
} |
|
74 |
||
75 |
HeapWord* gen_boundary() { return _gen_boundary; } |
|
76 |
}; |
|
77 |
||
78 |
// Closure for scanning DefNewGeneration. |
|
79 |
// |
|
80 |
// This closure will perform barrier store calls for ALL |
|
81 |
// pointers in scanned oops. |
|
82 |
class ScanClosure: public OopsInGenClosure { |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
83 |
protected: |
1 | 84 |
DefNewGeneration* _g; |
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
85 |
HeapWord* _boundary; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
86 |
bool _gc_barrier; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
87 |
template <class T> inline void do_oop_work(T* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
88 |
public: |
1 | 89 |
ScanClosure(DefNewGeneration* g, bool gc_barrier); |
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
90 |
virtual void do_oop(oop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
91 |
virtual void do_oop(narrowOop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
92 |
inline void do_oop_nv(oop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
93 |
inline void do_oop_nv(narrowOop* p); |
1 | 94 |
bool do_header() { return false; } |
95 |
Prefetch::style prefetch_style() { |
|
96 |
return Prefetch::do_write; |
|
97 |
} |
|
98 |
}; |
|
99 |
||
100 |
// Closure for scanning DefNewGeneration. |
|
101 |
// |
|
102 |
// This closure only performs barrier store calls on |
|
103 |
// pointers into the DefNewGeneration. This is less |
|
104 |
// precise, but faster, than a ScanClosure |
|
105 |
class FastScanClosure: public OopsInGenClosure { |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
106 |
protected: |
1 | 107 |
DefNewGeneration* _g; |
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
108 |
HeapWord* _boundary; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
109 |
bool _gc_barrier; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
110 |
template <class T> inline void do_oop_work(T* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
111 |
public: |
1 | 112 |
FastScanClosure(DefNewGeneration* g, bool gc_barrier); |
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
113 |
virtual void do_oop(oop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
114 |
virtual void do_oop(narrowOop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
115 |
inline void do_oop_nv(oop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
116 |
inline void do_oop_nv(narrowOop* p); |
1 | 117 |
bool do_header() { return false; } |
118 |
Prefetch::style prefetch_style() { |
|
119 |
return Prefetch::do_write; |
|
120 |
} |
|
121 |
}; |
|
122 |
||
123 |
class FilteringClosure: public OopClosure { |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
124 |
private: |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
125 |
HeapWord* _boundary; |
1 | 126 |
OopClosure* _cl; |
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
127 |
protected: |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
128 |
template <class T> inline void do_oop_work(T* p) { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
129 |
T heap_oop = oopDesc::load_heap_oop(p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
130 |
if (!oopDesc::is_null(heap_oop)) { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
131 |
oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
132 |
if ((HeapWord*)obj < _boundary) { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
133 |
_cl->do_oop(p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
134 |
} |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
135 |
} |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
136 |
} |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
137 |
public: |
1 | 138 |
FilteringClosure(HeapWord* boundary, OopClosure* cl) : |
139 |
OopClosure(cl->_ref_processor), _boundary(boundary), |
|
140 |
_cl(cl) {} |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
141 |
virtual void do_oop(oop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
142 |
virtual void do_oop(narrowOop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
143 |
inline void do_oop_nv(oop* p) { FilteringClosure::do_oop_work(p); } |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
144 |
inline void do_oop_nv(narrowOop* p) { FilteringClosure::do_oop_work(p); } |
1 | 145 |
bool do_header() { return false; } |
146 |
}; |
|
147 |
||
148 |
// Closure for scanning DefNewGeneration's weak references. |
|
149 |
// NOTE: very much like ScanClosure but not derived from |
|
150 |
// OopsInGenClosure -- weak references are processed all |
|
151 |
// at once, with no notion of which generation they were in. |
|
152 |
class ScanWeakRefClosure: public OopClosure { |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
153 |
protected: |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
154 |
DefNewGeneration* _g; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
155 |
HeapWord* _boundary; |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
156 |
template <class T> inline void do_oop_work(T* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
157 |
public: |
1 | 158 |
ScanWeakRefClosure(DefNewGeneration* g); |
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
159 |
virtual void do_oop(oop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
160 |
virtual void do_oop(narrowOop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
161 |
inline void do_oop_nv(oop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
162 |
inline void do_oop_nv(narrowOop* p); |
1 | 163 |
}; |
164 |
||
165 |
class VerifyOopClosure: public OopClosure { |
|
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
166 |
protected: |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
167 |
template <class T> inline void do_oop_work(T* p) { |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
168 |
oop obj = oopDesc::load_decode_heap_oop(p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
169 |
guarantee(obj->is_oop_or_null(), "invalid oop"); |
1 | 170 |
} |
360
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
171 |
public: |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
172 |
virtual void do_oop(oop* p); |
21d113ecbf6a
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
1
diff
changeset
|
173 |
virtual void do_oop(narrowOop* p); |
1 | 174 |
static VerifyOopClosure verify_oop; |
175 |
}; |