Thu, 27 May 2010 19:08:38 -0700
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
1 /*
2 * Copyright (c) 1997, 2009, 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 */
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.
29 typedef juint narrowOop; // Offset instead of address for an oop within a java object
30 typedef class klassOopDesc* wideKlassOop; // to keep SA happy and unhandled oop
31 // detector happy.
32 typedef void* OopOrNarrowOopStar;
34 #ifndef CHECK_UNHANDLED_OOPS
36 typedef class oopDesc* oop;
37 typedef class instanceOopDesc* instanceOop;
38 typedef class methodOopDesc* methodOop;
39 typedef class constMethodOopDesc* constMethodOop;
40 typedef class methodDataOopDesc* methodDataOop;
41 typedef class arrayOopDesc* arrayOop;
42 typedef class objArrayOopDesc* objArrayOop;
43 typedef class typeArrayOopDesc* typeArrayOop;
44 typedef class constantPoolOopDesc* constantPoolOop;
45 typedef class constantPoolCacheOopDesc* constantPoolCacheOop;
46 typedef class symbolOopDesc* symbolOop;
47 typedef class klassOopDesc* klassOop;
48 typedef class markOopDesc* markOop;
49 typedef class compiledICHolderOopDesc* compiledICHolderOop;
51 #else
54 // When CHECK_UNHANDLED_OOPS is defined, an "oop" is a class with a
55 // carefully chosen set of constructors and conversion operators to go
56 // to and from the underlying oopDesc pointer type.
57 //
58 // Because oop and its subclasses <type>Oop are class types, arbitrary
59 // conversions are not accepted by the compiler, and you may get a message
60 // about overloading ambiguity (between long and int is common when converting
61 // from a constant in 64 bit mode), or unable to convert from type to 'oop'.
62 // Applying a cast to one of these conversion operators first will get to the
63 // underlying oopDesc* type if appropriate.
64 // Converting NULL to oop to Handle implicit is no longer accepted by the
65 // compiler because there are too many steps in the conversion. Use Handle()
66 // instead, which generates less code anyway.
68 class Thread;
69 typedef class markOopDesc* markOop;
70 class PromotedObject;
73 class oop {
74 oopDesc* _o;
76 void register_oop();
77 void unregister_oop();
79 // friend class markOop;
80 public:
81 void set_obj(const void* p) {
82 raw_set_obj(p);
83 if (CheckUnhandledOops) register_oop();
84 }
85 void raw_set_obj(const void* p) { _o = (oopDesc*)p; }
87 oop() { set_obj(NULL); }
88 oop(const volatile oop& o) { set_obj(o.obj()); }
89 oop(const void* p) { set_obj(p); }
90 oop(intptr_t i) { set_obj((void *)i); }
91 #ifdef _LP64
92 oop(int i) { set_obj((void *)i); }
93 #endif
94 ~oop() {
95 if (CheckUnhandledOops) unregister_oop();
96 }
98 oopDesc* obj() const volatile { return _o; }
100 // General access
101 oopDesc* operator->() const { return obj(); }
102 bool operator==(const oop o) const { return obj() == o.obj(); }
103 bool operator==(void *p) const { return obj() == p; }
104 bool operator!=(const oop o) const { return obj() != o.obj(); }
105 bool operator!=(void *p) const { return obj() != p; }
106 bool operator==(intptr_t p) const { return obj() == (oopDesc*)p; }
107 bool operator!=(intptr_t p) const { return obj() != (oopDesc*)p; }
109 bool operator<(oop o) const { return obj() < o.obj(); }
110 bool operator>(oop o) const { return obj() > o.obj(); }
111 bool operator<=(oop o) const { return obj() <= o.obj(); }
112 bool operator>=(oop o) const { return obj() >= o.obj(); }
113 bool operator!() const { return !obj(); }
115 // Cast
116 operator void* () const { return (void *)obj(); }
117 operator HeapWord* () const { return (HeapWord*)obj(); }
118 operator oopDesc* () const { return obj(); }
119 operator intptr_t* () const { return (intptr_t*)obj(); }
120 operator PromotedObject* () const { return (PromotedObject*)obj(); }
121 operator markOop () const { return markOop(obj()); }
123 operator address () const { return (address)obj(); }
124 operator intptr_t () const { return (intptr_t)obj(); }
126 // from javaCalls.cpp
127 operator jobject () const { return (jobject)obj(); }
128 // from javaClasses.cpp
129 operator JavaThread* () const { return (JavaThread*)obj(); }
131 #ifndef _LP64
132 // from jvm.cpp
133 operator jlong* () const { return (jlong*)obj(); }
134 #endif
136 // from parNewGeneration and other things that want to get to the end of
137 // an oop for stuff (like constMethodKlass.cpp, objArrayKlass.cpp)
138 operator oop* () const { return (oop *)obj(); }
139 };
141 #define DEF_OOP(type) \
142 class type##OopDesc; \
143 class type##Oop : public oop { \
144 public: \
145 type##Oop() : oop() {} \
146 type##Oop(const volatile oop& o) : oop(o) {} \
147 type##Oop(const void* p) : oop(p) {} \
148 operator type##OopDesc* () const { return (type##OopDesc*)obj(); } \
149 type##OopDesc* operator->() const { \
150 return (type##OopDesc*)obj(); \
151 } \
152 }; \
154 DEF_OOP(instance);
155 DEF_OOP(method);
156 DEF_OOP(methodData);
157 DEF_OOP(array);
158 DEF_OOP(constMethod);
159 DEF_OOP(constantPool);
160 DEF_OOP(constantPoolCache);
161 DEF_OOP(objArray);
162 DEF_OOP(typeArray);
163 DEF_OOP(symbol);
164 DEF_OOP(klass);
165 DEF_OOP(compiledICHolder);
167 #endif // CHECK_UNHANDLED_OOPS
169 // The klass hierarchy is separate from the oop hierarchy.
171 class Klass;
172 class instanceKlass;
173 class instanceRefKlass;
174 class methodKlass;
175 class constMethodKlass;
176 class methodDataKlass;
177 class klassKlass;
178 class instanceKlassKlass;
179 class arrayKlassKlass;
180 class objArrayKlassKlass;
181 class typeArrayKlassKlass;
182 class arrayKlass;
183 class objArrayKlass;
184 class typeArrayKlass;
185 class constantPoolKlass;
186 class constantPoolCacheKlass;
187 class symbolKlass;
188 class compiledICHolderKlass;