|
0
|
1 /*
|
|
|
2 * Copyright 1997-2007 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 // OBJECT hierarchy
|
|
|
26 // This hierarchy is a representation hierarchy, i.e. if A is a superclass
|
|
|
27 // of B, A's representation is a prefix of B's representation.
|
|
|
28
|
|
|
29 #ifndef CHECK_UNHANDLED_OOPS
|
|
|
30
|
|
|
31 typedef class oopDesc* oop;
|
|
|
32 typedef class instanceOopDesc* instanceOop;
|
|
|
33 typedef class methodOopDesc* methodOop;
|
|
|
34 typedef class constMethodOopDesc* constMethodOop;
|
|
|
35 typedef class methodDataOopDesc* methodDataOop;
|
|
|
36 typedef class arrayOopDesc* arrayOop;
|
|
|
37 typedef class constantPoolOopDesc* constantPoolOop;
|
|
|
38 typedef class constantPoolCacheOopDesc* constantPoolCacheOop;
|
|
|
39 typedef class objArrayOopDesc* objArrayOop;
|
|
|
40 typedef class typeArrayOopDesc* typeArrayOop;
|
|
|
41 typedef class symbolOopDesc* symbolOop;
|
|
|
42 typedef class klassOopDesc* klassOop;
|
|
|
43 typedef class markOopDesc* markOop;
|
|
|
44 typedef class compiledICHolderOopDesc* compiledICHolderOop;
|
|
|
45
|
|
|
46 #else
|
|
|
47
|
|
|
48
|
|
|
49 // When CHECK_UNHANDLED_OOPS is defined, an "oop" is a class with a
|
|
|
50 // carefully chosen set of constructors and conversion operators to go
|
|
|
51 // to and from the underlying oopDesc pointer type.
|
|
|
52 //
|
|
|
53 // Because oop and its subclasses <type>Oop are class types, arbitrary
|
|
|
54 // conversions are not accepted by the compiler, and you may get a message
|
|
|
55 // about overloading ambiguity (between long and int is common when converting
|
|
|
56 // from a constant in 64 bit mode), or unable to convert from type to 'oop'.
|
|
|
57 // Applying a cast to one of these conversion operators first will get to the
|
|
|
58 // underlying oopDesc* type if appropriate.
|
|
|
59 // Converting NULL to oop to Handle implicit is no longer accepted by the
|
|
|
60 // compiler because there are too many steps in the conversion. Use Handle()
|
|
|
61 // instead, which generates less code anyway.
|
|
|
62
|
|
|
63 class Thread;
|
|
|
64 typedef class markOopDesc* markOop;
|
|
|
65 class PromotedObject;
|
|
|
66
|
|
|
67
|
|
|
68 class oop {
|
|
|
69 oopDesc* _o;
|
|
|
70
|
|
|
71 void register_oop();
|
|
|
72 void unregister_oop();
|
|
|
73
|
|
|
74 // friend class markOop;
|
|
|
75 public:
|
|
|
76 void set_obj(const void* p) {
|
|
|
77 raw_set_obj(p);
|
|
|
78 if (CheckUnhandledOops) register_oop();
|
|
|
79 }
|
|
|
80 void raw_set_obj(const void* p) { _o = (oopDesc*)p; }
|
|
|
81
|
|
|
82 oop() { set_obj(NULL); }
|
|
|
83 oop(const volatile oop& o) { set_obj(o.obj()); }
|
|
|
84 oop(const void* p) { set_obj(p); }
|
|
|
85 oop(intptr_t i) { set_obj((void *)i); }
|
|
|
86 #ifdef _LP64
|
|
|
87 oop(int i) { set_obj((void *)i); }
|
|
|
88 #endif
|
|
|
89 ~oop() {
|
|
|
90 if (CheckUnhandledOops) unregister_oop();
|
|
|
91 }
|
|
|
92
|
|
|
93 oopDesc* obj() const volatile { return _o; }
|
|
|
94
|
|
|
95 // General access
|
|
|
96 oopDesc* operator->() const { return obj(); }
|
|
|
97 bool operator==(const oop o) const { return obj() == o.obj(); }
|
|
|
98 bool operator==(void *p) const { return obj() == p; }
|
|
|
99 bool operator!=(const oop o) const { return obj() != o.obj(); }
|
|
|
100 bool operator!=(void *p) const { return obj() != p; }
|
|
|
101 bool operator==(intptr_t p) const { return obj() == (oopDesc*)p; }
|
|
|
102 bool operator!=(intptr_t p) const { return obj() != (oopDesc*)p; }
|
|
|
103
|
|
|
104 bool operator<(oop o) const { return obj() < o.obj(); }
|
|
|
105 bool operator>(oop o) const { return obj() > o.obj(); }
|
|
|
106 bool operator<=(oop o) const { return obj() <= o.obj(); }
|
|
|
107 bool operator>=(oop o) const { return obj() >= o.obj(); }
|
|
|
108 bool operator!() const { return !obj(); }
|
|
|
109
|
|
|
110 // Cast
|
|
|
111 operator void* () const { return (void *)obj(); }
|
|
|
112 operator HeapWord* () const { return (HeapWord*)obj(); }
|
|
|
113 operator oopDesc* () const { return obj(); }
|
|
|
114 operator intptr_t* () const { return (intptr_t*)obj(); }
|
|
|
115 operator PromotedObject* () const { return (PromotedObject*)obj(); }
|
|
|
116 operator markOop () const { return markOop(obj()); }
|
|
|
117
|
|
|
118 operator address () const { return (address)obj(); }
|
|
|
119 operator intptr_t () const { return (intptr_t)obj(); }
|
|
|
120
|
|
|
121 // from javaCalls.cpp
|
|
|
122 operator jobject () const { return (jobject)obj(); }
|
|
|
123 // from javaClasses.cpp
|
|
|
124 operator JavaThread* () const { return (JavaThread*)obj(); }
|
|
|
125 // from jvm.cpp
|
|
|
126 operator jlong* () const { return (jlong*)obj(); }
|
|
|
127
|
|
|
128 // from parNewGeneration and other things that want to get to the end of
|
|
|
129 // an oop for stuff (like constMethodKlass.cpp, objArrayKlass.cpp)
|
|
|
130 operator oop* () const { return (oop *)obj(); }
|
|
|
131 };
|
|
|
132
|
|
|
133 #define DEF_OOP(type) \
|
|
|
134 class type##OopDesc; \
|
|
|
135 class type##Oop : public oop { \
|
|
|
136 public: \
|
|
|
137 type##Oop() : oop() {} \
|
|
|
138 type##Oop(const volatile oop& o) : oop(o) {} \
|
|
|
139 type##Oop(const void* p) : oop(p) {} \
|
|
|
140 operator type##OopDesc* () const { return (type##OopDesc*)obj(); } \
|
|
|
141 type##OopDesc* operator->() const { \
|
|
|
142 return (type##OopDesc*)obj(); \
|
|
|
143 } \
|
|
|
144 }; \
|
|
|
145
|
|
|
146 DEF_OOP(instance);
|
|
|
147 DEF_OOP(method);
|
|
|
148 DEF_OOP(methodData);
|
|
|
149 DEF_OOP(array);
|
|
|
150 DEF_OOP(constMethod);
|
|
|
151 DEF_OOP(constantPool);
|
|
|
152 DEF_OOP(constantPoolCache);
|
|
|
153 DEF_OOP(objArray);
|
|
|
154 DEF_OOP(typeArray);
|
|
|
155 DEF_OOP(symbol);
|
|
|
156 DEF_OOP(klass);
|
|
|
157 DEF_OOP(compiledICHolder);
|
|
|
158
|
|
|
159 #endif // CHECK_UNHANDLED_OOPS
|
|
|
160
|
|
|
161 // The klass hierarchy is separate from the oop hierarchy.
|
|
|
162
|
|
|
163 class Klass;
|
|
|
164 class instanceKlass;
|
|
|
165 class instanceRefKlass;
|
|
|
166 class methodKlass;
|
|
|
167 class constMethodKlass;
|
|
|
168 class methodDataKlass;
|
|
|
169 class klassKlass;
|
|
|
170 class instanceKlassKlass;
|
|
|
171 class arrayKlassKlass;
|
|
|
172 class objArrayKlassKlass;
|
|
|
173 class typeArrayKlassKlass;
|
|
|
174 class arrayKlass;
|
|
|
175 class constantPoolKlass;
|
|
|
176 class constantPoolCacheKlass;
|
|
|
177 class objArrayKlass;
|
|
|
178 class typeArrayKlass;
|
|
|
179 class symbolKlass;
|
|
|
180 class compiledICHolderKlass;
|
