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src/share/vm/oops/oopsHierarchy.hpp@f95d63e2154a (annotated)

src/share/vm/oops/oopsHierarchy.hpp

Tue, 23 Nov 2010 13:22:55 -0800

author
stefank
date
Tue, 23 Nov 2010 13:22:55 -0800
changeset 2314
f95d63e2154a
parent 1907
c18cbe5936b8
child 2497
3582bf76420e
permissions
-rw-r--r--

6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg

duke@435 1 /*
stefank@2314 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
duke@435 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435 4 *
duke@435 5 * This code is free software; you can redistribute it and/or modify it
duke@435 6 * under the terms of the GNU General Public License version 2 only, as
duke@435 7 * published by the Free Software Foundation.
duke@435 8 *
duke@435 9 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435 12 * version 2 for more details (a copy is included in the LICENSE file that
duke@435 13 * accompanied this code).
duke@435 14 *
duke@435 15 * You should have received a copy of the GNU General Public License version
duke@435 16 * 2 along with this work; if not, write to the Free Software Foundation,
duke@435 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435 18 *
trims@1907 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907 20 * or visit www.oracle.com if you need additional information or have any
trims@1907 21 * questions.
duke@435 22 *
duke@435 23 */
duke@435 24
stefank@2314 25 #ifndef SHARE_VM_OOPS_OOPSHIERARCHY_HPP
stefank@2314 26 #define SHARE_VM_OOPS_OOPSHIERARCHY_HPP
stefank@2314 27
stefank@2314 28 #include "runtime/globals.hpp"
stefank@2314 29 #include "utilities/globalDefinitions.hpp"
stefank@2314 30
duke@435 31 // OBJECT hierarchy
duke@435 32 // This hierarchy is a representation hierarchy, i.e. if A is a superclass
duke@435 33 // of B, A's representation is a prefix of B's representation.
duke@435 34
coleenp@548 35 typedef juint narrowOop; // Offset instead of address for an oop within a java object
coleenp@548 36 typedef class klassOopDesc* wideKlassOop; // to keep SA happy and unhandled oop
coleenp@548 37 // detector happy.
ysr@1280 38 typedef void* OopOrNarrowOopStar;
coleenp@548 39
duke@435 40 #ifndef CHECK_UNHANDLED_OOPS
duke@435 41
coleenp@548 42 typedef class oopDesc* oop;
duke@435 43 typedef class instanceOopDesc* instanceOop;
coleenp@548 44 typedef class methodOopDesc* methodOop;
coleenp@548 45 typedef class constMethodOopDesc* constMethodOop;
coleenp@548 46 typedef class methodDataOopDesc* methodDataOop;
coleenp@548 47 typedef class arrayOopDesc* arrayOop;
coleenp@548 48 typedef class objArrayOopDesc* objArrayOop;
coleenp@548 49 typedef class typeArrayOopDesc* typeArrayOop;
coleenp@548 50 typedef class constantPoolOopDesc* constantPoolOop;
coleenp@548 51 typedef class constantPoolCacheOopDesc* constantPoolCacheOop;
coleenp@548 52 typedef class symbolOopDesc* symbolOop;
coleenp@548 53 typedef class klassOopDesc* klassOop;
coleenp@548 54 typedef class markOopDesc* markOop;
duke@435 55 typedef class compiledICHolderOopDesc* compiledICHolderOop;
duke@435 56
duke@435 57 #else
duke@435 58
duke@435 59
duke@435 60 // When CHECK_UNHANDLED_OOPS is defined, an "oop" is a class with a
duke@435 61 // carefully chosen set of constructors and conversion operators to go
duke@435 62 // to and from the underlying oopDesc pointer type.
duke@435 63 //
duke@435 64 // Because oop and its subclasses <type>Oop are class types, arbitrary
duke@435 65 // conversions are not accepted by the compiler, and you may get a message
duke@435 66 // about overloading ambiguity (between long and int is common when converting
duke@435 67 // from a constant in 64 bit mode), or unable to convert from type to 'oop'.
duke@435 68 // Applying a cast to one of these conversion operators first will get to the
duke@435 69 // underlying oopDesc* type if appropriate.
duke@435 70 // Converting NULL to oop to Handle implicit is no longer accepted by the
duke@435 71 // compiler because there are too many steps in the conversion. Use Handle()
duke@435 72 // instead, which generates less code anyway.
duke@435 73
duke@435 74 class Thread;
duke@435 75 typedef class markOopDesc* markOop;
duke@435 76 class PromotedObject;
duke@435 77
duke@435 78
duke@435 79 class oop {
duke@435 80 oopDesc* _o;
duke@435 81
duke@435 82 void register_oop();
duke@435 83 void unregister_oop();
duke@435 84
duke@435 85 // friend class markOop;
duke@435 86 public:
duke@435 87 void set_obj(const void* p) {
duke@435 88 raw_set_obj(p);
duke@435 89 if (CheckUnhandledOops) register_oop();
duke@435 90 }
duke@435 91 void raw_set_obj(const void* p) { _o = (oopDesc*)p; }
duke@435 92
duke@435 93 oop() { set_obj(NULL); }
duke@435 94 oop(const volatile oop& o) { set_obj(o.obj()); }
duke@435 95 oop(const void* p) { set_obj(p); }
duke@435 96 oop(intptr_t i) { set_obj((void *)i); }
duke@435 97 #ifdef _LP64
duke@435 98 oop(int i) { set_obj((void *)i); }
duke@435 99 #endif
duke@435 100 ~oop() {
duke@435 101 if (CheckUnhandledOops) unregister_oop();
duke@435 102 }
duke@435 103
duke@435 104 oopDesc* obj() const volatile { return _o; }
duke@435 105
duke@435 106 // General access
duke@435 107 oopDesc* operator->() const { return obj(); }
duke@435 108 bool operator==(const oop o) const { return obj() == o.obj(); }
duke@435 109 bool operator==(void *p) const { return obj() == p; }
duke@435 110 bool operator!=(const oop o) const { return obj() != o.obj(); }
duke@435 111 bool operator!=(void *p) const { return obj() != p; }
duke@435 112 bool operator==(intptr_t p) const { return obj() == (oopDesc*)p; }
duke@435 113 bool operator!=(intptr_t p) const { return obj() != (oopDesc*)p; }
duke@435 114
duke@435 115 bool operator<(oop o) const { return obj() < o.obj(); }
duke@435 116 bool operator>(oop o) const { return obj() > o.obj(); }
duke@435 117 bool operator<=(oop o) const { return obj() <= o.obj(); }
duke@435 118 bool operator>=(oop o) const { return obj() >= o.obj(); }
duke@435 119 bool operator!() const { return !obj(); }
duke@435 120
duke@435 121 // Cast
duke@435 122 operator void* () const { return (void *)obj(); }
duke@435 123 operator HeapWord* () const { return (HeapWord*)obj(); }
duke@435 124 operator oopDesc* () const { return obj(); }
duke@435 125 operator intptr_t* () const { return (intptr_t*)obj(); }
duke@435 126 operator PromotedObject* () const { return (PromotedObject*)obj(); }
duke@435 127 operator markOop () const { return markOop(obj()); }
duke@435 128
duke@435 129 operator address () const { return (address)obj(); }
duke@435 130 operator intptr_t () const { return (intptr_t)obj(); }
duke@435 131
duke@435 132 // from javaCalls.cpp
duke@435 133 operator jobject () const { return (jobject)obj(); }
duke@435 134 // from javaClasses.cpp
duke@435 135 operator JavaThread* () const { return (JavaThread*)obj(); }
xlu@948 136
xlu@948 137 #ifndef _LP64
duke@435 138 // from jvm.cpp
duke@435 139 operator jlong* () const { return (jlong*)obj(); }
xlu@948 140 #endif
duke@435 141
duke@435 142 // from parNewGeneration and other things that want to get to the end of
duke@435 143 // an oop for stuff (like constMethodKlass.cpp, objArrayKlass.cpp)
duke@435 144 operator oop* () const { return (oop *)obj(); }
duke@435 145 };
duke@435 146
duke@435 147 #define DEF_OOP(type) \
duke@435 148 class type##OopDesc; \
duke@435 149 class type##Oop : public oop { \
duke@435 150 public: \
duke@435 151 type##Oop() : oop() {} \
duke@435 152 type##Oop(const volatile oop& o) : oop(o) {} \
duke@435 153 type##Oop(const void* p) : oop(p) {} \
duke@435 154 operator type##OopDesc* () const { return (type##OopDesc*)obj(); } \
duke@435 155 type##OopDesc* operator->() const { \
duke@435 156 return (type##OopDesc*)obj(); \
duke@435 157 } \
duke@435 158 }; \
duke@435 159
duke@435 160 DEF_OOP(instance);
duke@435 161 DEF_OOP(method);
duke@435 162 DEF_OOP(methodData);
duke@435 163 DEF_OOP(array);
duke@435 164 DEF_OOP(constMethod);
duke@435 165 DEF_OOP(constantPool);
duke@435 166 DEF_OOP(constantPoolCache);
duke@435 167 DEF_OOP(objArray);
duke@435 168 DEF_OOP(typeArray);
duke@435 169 DEF_OOP(symbol);
duke@435 170 DEF_OOP(klass);
duke@435 171 DEF_OOP(compiledICHolder);
duke@435 172
duke@435 173 #endif // CHECK_UNHANDLED_OOPS
duke@435 174
duke@435 175 // The klass hierarchy is separate from the oop hierarchy.
duke@435 176
duke@435 177 class Klass;
duke@435 178 class instanceKlass;
duke@435 179 class instanceRefKlass;
duke@435 180 class methodKlass;
duke@435 181 class constMethodKlass;
duke@435 182 class methodDataKlass;
duke@435 183 class klassKlass;
duke@435 184 class instanceKlassKlass;
duke@435 185 class arrayKlassKlass;
duke@435 186 class objArrayKlassKlass;
duke@435 187 class typeArrayKlassKlass;
duke@435 188 class arrayKlass;
duke@435 189 class objArrayKlass;
duke@435 190 class typeArrayKlass;
coleenp@548 191 class constantPoolKlass;
coleenp@548 192 class constantPoolCacheKlass;
coleenp@548 193 class symbolKlass;
duke@435 194 class compiledICHolderKlass;
stefank@2314 195
stefank@2314 196 #endif // SHARE_VM_OOPS_OOPSHIERARCHY_HPP

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