1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/oops/oopsHierarchy.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,180 @@
1.4 +/*
1.5 + * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + *
1.26 + */
1.27 +
1.28 +// OBJECT hierarchy
1.29 +// This hierarchy is a representation hierarchy, i.e. if A is a superclass
1.30 +// of B, A's representation is a prefix of B's representation.
1.31 +
1.32 +#ifndef CHECK_UNHANDLED_OOPS
1.33 +
1.34 +typedef class oopDesc* oop;
1.35 +typedef class instanceOopDesc* instanceOop;
1.36 +typedef class methodOopDesc* methodOop;
1.37 +typedef class constMethodOopDesc* constMethodOop;
1.38 +typedef class methodDataOopDesc* methodDataOop;
1.39 +typedef class arrayOopDesc* arrayOop;
1.40 +typedef class constantPoolOopDesc* constantPoolOop;
1.41 +typedef class constantPoolCacheOopDesc* constantPoolCacheOop;
1.42 +typedef class objArrayOopDesc* objArrayOop;
1.43 +typedef class typeArrayOopDesc* typeArrayOop;
1.44 +typedef class symbolOopDesc* symbolOop;
1.45 +typedef class klassOopDesc* klassOop;
1.46 +typedef class markOopDesc* markOop;
1.47 +typedef class compiledICHolderOopDesc* compiledICHolderOop;
1.48 +
1.49 +#else
1.50 +
1.51 +
1.52 +// When CHECK_UNHANDLED_OOPS is defined, an "oop" is a class with a
1.53 +// carefully chosen set of constructors and conversion operators to go
1.54 +// to and from the underlying oopDesc pointer type.
1.55 +//
1.56 +// Because oop and its subclasses <type>Oop are class types, arbitrary
1.57 +// conversions are not accepted by the compiler, and you may get a message
1.58 +// about overloading ambiguity (between long and int is common when converting
1.59 +// from a constant in 64 bit mode), or unable to convert from type to 'oop'.
1.60 +// Applying a cast to one of these conversion operators first will get to the
1.61 +// underlying oopDesc* type if appropriate.
1.62 +// Converting NULL to oop to Handle implicit is no longer accepted by the
1.63 +// compiler because there are too many steps in the conversion. Use Handle()
1.64 +// instead, which generates less code anyway.
1.65 +
1.66 +class Thread;
1.67 +typedef class markOopDesc* markOop;
1.68 +class PromotedObject;
1.69 +
1.70 +
1.71 +class oop {
1.72 + oopDesc* _o;
1.73 +
1.74 + void register_oop();
1.75 + void unregister_oop();
1.76 +
1.77 + // friend class markOop;
1.78 +public:
1.79 + void set_obj(const void* p) {
1.80 + raw_set_obj(p);
1.81 + if (CheckUnhandledOops) register_oop();
1.82 + }
1.83 + void raw_set_obj(const void* p) { _o = (oopDesc*)p; }
1.84 +
1.85 + oop() { set_obj(NULL); }
1.86 + oop(const volatile oop& o) { set_obj(o.obj()); }
1.87 + oop(const void* p) { set_obj(p); }
1.88 + oop(intptr_t i) { set_obj((void *)i); }
1.89 +#ifdef _LP64
1.90 + oop(int i) { set_obj((void *)i); }
1.91 +#endif
1.92 + ~oop() {
1.93 + if (CheckUnhandledOops) unregister_oop();
1.94 + }
1.95 +
1.96 + oopDesc* obj() const volatile { return _o; }
1.97 +
1.98 + // General access
1.99 + oopDesc* operator->() const { return obj(); }
1.100 + bool operator==(const oop o) const { return obj() == o.obj(); }
1.101 + bool operator==(void *p) const { return obj() == p; }
1.102 + bool operator!=(const oop o) const { return obj() != o.obj(); }
1.103 + bool operator!=(void *p) const { return obj() != p; }
1.104 + bool operator==(intptr_t p) const { return obj() == (oopDesc*)p; }
1.105 + bool operator!=(intptr_t p) const { return obj() != (oopDesc*)p; }
1.106 +
1.107 + bool operator<(oop o) const { return obj() < o.obj(); }
1.108 + bool operator>(oop o) const { return obj() > o.obj(); }
1.109 + bool operator<=(oop o) const { return obj() <= o.obj(); }
1.110 + bool operator>=(oop o) const { return obj() >= o.obj(); }
1.111 + bool operator!() const { return !obj(); }
1.112 +
1.113 + // Cast
1.114 + operator void* () const { return (void *)obj(); }
1.115 + operator HeapWord* () const { return (HeapWord*)obj(); }
1.116 + operator oopDesc* () const { return obj(); }
1.117 + operator intptr_t* () const { return (intptr_t*)obj(); }
1.118 + operator PromotedObject* () const { return (PromotedObject*)obj(); }
1.119 + operator markOop () const { return markOop(obj()); }
1.120 +
1.121 + operator address () const { return (address)obj(); }
1.122 + operator intptr_t () const { return (intptr_t)obj(); }
1.123 +
1.124 + // from javaCalls.cpp
1.125 + operator jobject () const { return (jobject)obj(); }
1.126 + // from javaClasses.cpp
1.127 + operator JavaThread* () const { return (JavaThread*)obj(); }
1.128 + // from jvm.cpp
1.129 + operator jlong* () const { return (jlong*)obj(); }
1.130 +
1.131 + // from parNewGeneration and other things that want to get to the end of
1.132 + // an oop for stuff (like constMethodKlass.cpp, objArrayKlass.cpp)
1.133 + operator oop* () const { return (oop *)obj(); }
1.134 +};
1.135 +
1.136 +#define DEF_OOP(type) \
1.137 + class type##OopDesc; \
1.138 + class type##Oop : public oop { \
1.139 + public: \
1.140 + type##Oop() : oop() {} \
1.141 + type##Oop(const volatile oop& o) : oop(o) {} \
1.142 + type##Oop(const void* p) : oop(p) {} \
1.143 + operator type##OopDesc* () const { return (type##OopDesc*)obj(); } \
1.144 + type##OopDesc* operator->() const { \
1.145 + return (type##OopDesc*)obj(); \
1.146 + } \
1.147 + }; \
1.148 +
1.149 +DEF_OOP(instance);
1.150 +DEF_OOP(method);
1.151 +DEF_OOP(methodData);
1.152 +DEF_OOP(array);
1.153 +DEF_OOP(constMethod);
1.154 +DEF_OOP(constantPool);
1.155 +DEF_OOP(constantPoolCache);
1.156 +DEF_OOP(objArray);
1.157 +DEF_OOP(typeArray);
1.158 +DEF_OOP(symbol);
1.159 +DEF_OOP(klass);
1.160 +DEF_OOP(compiledICHolder);
1.161 +
1.162 +#endif // CHECK_UNHANDLED_OOPS
1.163 +
1.164 +// The klass hierarchy is separate from the oop hierarchy.
1.165 +
1.166 +class Klass;
1.167 +class instanceKlass;
1.168 +class instanceRefKlass;
1.169 +class methodKlass;
1.170 +class constMethodKlass;
1.171 +class methodDataKlass;
1.172 +class klassKlass;
1.173 +class instanceKlassKlass;
1.174 +class arrayKlassKlass;
1.175 +class objArrayKlassKlass;
1.176 +class typeArrayKlassKlass;
1.177 +class arrayKlass;
1.178 +class constantPoolKlass;
1.179 +class constantPoolCacheKlass;
1.180 +class objArrayKlass;
1.181 +class typeArrayKlass;
1.182 +class symbolKlass;
1.183 +class compiledICHolderKlass;
