Mercurial > hg > truffle
diff src/share/vm/ci/ciKlass.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | dd57230ba8fe |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/ci/ciKlass.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,119 @@ +/* + * Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +// ciKlass +// +// This class and its subclasses represent klassOops in the +// HotSpot virtual machine. In the vm, each klassOop contains an +// embedded Klass object. ciKlass is subclassed to explicitly +// represent the kind of Klass embedded in the klassOop. For +// example, a klassOop with an embedded objArrayKlass object is +// represented in the ciObject hierarchy by the class +// ciObjArrayKlass. +class ciKlass : public ciType { + CI_PACKAGE_ACCESS + friend class ciEnv; + friend class ciField; + friend class ciMethod; + friend class ciObjArrayKlass; + +private: + ciSymbol* _name; + jint _layout_helper; + +protected: + ciKlass(KlassHandle k_h, ciSymbol* name); + ciKlass(ciSymbol* name, ciKlass* klass); + + klassOop get_klassOop() const { + klassOop k = (klassOop)get_oop(); + assert(k != NULL, "illegal use of unloaded klass"); + return k; + } + + Klass* get_Klass() const { return get_klassOop()->klass_part(); } + + // Certain subklasses have an associated class loader. + virtual oop loader() { return NULL; } + virtual jobject loader_handle() { return NULL; } + + virtual oop protection_domain() { return NULL; } + virtual jobject protection_domain_handle() { return NULL; } + + const char* type_string() { return "ciKlass"; } + + void print_impl(outputStream* st); + +public: + ciKlass(KlassHandle k_h); + + // What is the name of this klass? + ciSymbol* name() { return _name; } + + // What is its layout helper value? + jint layout_helper() { return _layout_helper; } + + bool is_subtype_of(ciKlass* klass); + bool is_subclass_of(ciKlass* klass); + juint super_depth(); + juint super_check_offset(); + ciKlass* super_of_depth(juint i); + bool can_be_primary_super(); + static juint primary_super_limit() { return Klass::primary_super_limit(); } + + // Get the shared parent of two klasses. + ciKlass* least_common_ancestor(ciKlass* k); + + virtual bool is_interface() { + return false; + } + + virtual bool is_abstract() { + return false; + } + + // Does this type (array, class, interface) have no subtypes? + virtual bool is_leaf_type() { + return false; + } + + // Attempt to get a klass using this ciKlass's loader. + ciKlass* find_klass(ciSymbol* klass_name); + // Note: To find a class from its name string, use ciSymbol::make, + // but consider adding to vmSymbols.hpp instead. + + // Get the instance of java.lang.Class corresponding to this klass. + ciInstance* java_mirror(); + + // Fetch Klass::modifier_flags. + jint modifier_flags(); + + // Fetch Klass::access_flags. + jint access_flags(); + + // What kind of ciObject is this? + bool is_klass() { return true; } + + void print_name_on(outputStream* st); +};