1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/ci/ciKlass.hpp Sat Dec 01 00:00:00 2007 +0000
1.3 @@ -0,0 +1,119 @@
1.4 +/*
1.5 + * Copyright 1999-2007 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 +// ciKlass
1.29 +//
1.30 +// This class and its subclasses represent klassOops in the
1.31 +// HotSpot virtual machine. In the vm, each klassOop contains an
1.32 +// embedded Klass object. ciKlass is subclassed to explicitly
1.33 +// represent the kind of Klass embedded in the klassOop. For
1.34 +// example, a klassOop with an embedded objArrayKlass object is
1.35 +// represented in the ciObject hierarchy by the class
1.36 +// ciObjArrayKlass.
1.37 +class ciKlass : public ciType {
1.38 + CI_PACKAGE_ACCESS
1.39 + friend class ciEnv;
1.40 + friend class ciField;
1.41 + friend class ciMethod;
1.42 + friend class ciObjArrayKlass;
1.43 +
1.44 +private:
1.45 + ciSymbol* _name;
1.46 + jint _layout_helper;
1.47 +
1.48 +protected:
1.49 + ciKlass(KlassHandle k_h, ciSymbol* name);
1.50 + ciKlass(ciSymbol* name, ciKlass* klass);
1.51 +
1.52 + klassOop get_klassOop() const {
1.53 + klassOop k = (klassOop)get_oop();
1.54 + assert(k != NULL, "illegal use of unloaded klass");
1.55 + return k;
1.56 + }
1.57 +
1.58 + Klass* get_Klass() const { return get_klassOop()->klass_part(); }
1.59 +
1.60 + // Certain subklasses have an associated class loader.
1.61 + virtual oop loader() { return NULL; }
1.62 + virtual jobject loader_handle() { return NULL; }
1.63 +
1.64 + virtual oop protection_domain() { return NULL; }
1.65 + virtual jobject protection_domain_handle() { return NULL; }
1.66 +
1.67 + const char* type_string() { return "ciKlass"; }
1.68 +
1.69 + void print_impl(outputStream* st);
1.70 +
1.71 +public:
1.72 + ciKlass(KlassHandle k_h);
1.73 +
1.74 + // What is the name of this klass?
1.75 + ciSymbol* name() { return _name; }
1.76 +
1.77 + // What is its layout helper value?
1.78 + jint layout_helper() { return _layout_helper; }
1.79 +
1.80 + bool is_subtype_of(ciKlass* klass);
1.81 + bool is_subclass_of(ciKlass* klass);
1.82 + juint super_depth();
1.83 + juint super_check_offset();
1.84 + ciKlass* super_of_depth(juint i);
1.85 + bool can_be_primary_super();
1.86 + static juint primary_super_limit() { return Klass::primary_super_limit(); }
1.87 +
1.88 + // Get the shared parent of two klasses.
1.89 + ciKlass* least_common_ancestor(ciKlass* k);
1.90 +
1.91 + virtual bool is_interface() {
1.92 + return false;
1.93 + }
1.94 +
1.95 + virtual bool is_abstract() {
1.96 + return false;
1.97 + }
1.98 +
1.99 + // Does this type (array, class, interface) have no subtypes?
1.100 + virtual bool is_leaf_type() {
1.101 + return false;
1.102 + }
1.103 +
1.104 + // Attempt to get a klass using this ciKlass's loader.
1.105 + ciKlass* find_klass(ciSymbol* klass_name);
1.106 + // Note: To find a class from its name string, use ciSymbol::make,
1.107 + // but consider adding to vmSymbols.hpp instead.
1.108 +
1.109 + // Get the instance of java.lang.Class corresponding to this klass.
1.110 + ciInstance* java_mirror();
1.111 +
1.112 + // Fetch Klass::modifier_flags.
1.113 + jint modifier_flags();
1.114 +
1.115 + // Fetch Klass::access_flags.
1.116 + jint access_flags();
1.117 +
1.118 + // What kind of ciObject is this?
1.119 + bool is_klass() { return true; }
1.120 +
1.121 + void print_name_on(outputStream* st);
1.122 +};
