• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/ci/ciKlass.hpp@5eb9169b1a14 (annotated)

src/share/vm/ci/ciKlass.hpp

Wed, 12 Oct 2011 21:00:13 -0700

author

twisti

date

Wed, 12 Oct 2011 21:00:13 -0700

changeset 3197

5eb9169b1a14

parent 2314

f95d63e2154a

child 4037

da91efe96a93

permissions

-rw-r--r--

7092712: JSR 292: unloaded invokedynamic call sites can lead to a crash with signature types not on BCP
Reviewed-by: jrose, never

duke@435	1	/*
stefank@2314	2	* Copyright (c) 1999, 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_CI_CIKLASS_HPP
stefank@2314	26	#define SHARE_VM_CI_CIKLASS_HPP
stefank@2314	27
stefank@2314	28	#include "ci/ciType.hpp"
stefank@2314	29	#include "oops/klassOop.hpp"
stefank@2314	30
duke@435	31	// ciKlass
duke@435	32	//
duke@435	33	// This class and its subclasses represent klassOops in the
duke@435	34	// HotSpot virtual machine. In the vm, each klassOop contains an
duke@435	35	// embedded Klass object. ciKlass is subclassed to explicitly
duke@435	36	// represent the kind of Klass embedded in the klassOop. For
duke@435	37	// example, a klassOop with an embedded objArrayKlass object is
duke@435	38	// represented in the ciObject hierarchy by the class
duke@435	39	// ciObjArrayKlass.
duke@435	40	class ciKlass : public ciType {
duke@435	41	CI_PACKAGE_ACCESS
duke@435	42	friend class ciEnv;
duke@435	43	friend class ciField;
duke@435	44	friend class ciMethod;
duke@435	45	friend class ciObjArrayKlass;
duke@435	46
duke@435	47	private:
duke@435	48	ciSymbol* _name;
duke@435	49	jint _layout_helper;
duke@435	50
duke@435	51	protected:
duke@435	52	ciKlass(KlassHandle k_h, ciSymbol* name);
duke@435	53	ciKlass(ciSymbol* name, ciKlass* klass);
duke@435	54
duke@435	55	klassOop get_klassOop() const {
duke@435	56	klassOop k = (klassOop)get_oop();
duke@435	57	assert(k != NULL, "illegal use of unloaded klass");
duke@435	58	return k;
duke@435	59	}
duke@435	60
duke@435	61	Klass* get_Klass() const { return get_klassOop()->klass_part(); }
duke@435	62
duke@435	63	// Certain subklasses have an associated class loader.
duke@435	64	virtual oop loader() { return NULL; }
duke@435	65	virtual jobject loader_handle() { return NULL; }
duke@435	66
duke@435	67	virtual oop protection_domain() { return NULL; }
duke@435	68	virtual jobject protection_domain_handle() { return NULL; }
duke@435	69
duke@435	70	const char* type_string() { return "ciKlass"; }
duke@435	71
duke@435	72	void print_impl(outputStream* st);
duke@435	73
duke@435	74	public:
duke@435	75	ciKlass(KlassHandle k_h);
duke@435	76
duke@435	77	// What is the name of this klass?
twisti@1573	78	ciSymbol* name() const { return _name; }
duke@435	79
duke@435	80	// What is its layout helper value?
duke@435	81	jint layout_helper() { return _layout_helper; }
duke@435	82
duke@435	83	bool is_subtype_of(ciKlass* klass);
duke@435	84	bool is_subclass_of(ciKlass* klass);
duke@435	85	juint super_depth();
duke@435	86	juint super_check_offset();
duke@435	87	ciKlass* super_of_depth(juint i);
duke@435	88	bool can_be_primary_super();
duke@435	89	static juint primary_super_limit() { return Klass::primary_super_limit(); }
duke@435	90
duke@435	91	// Get the shared parent of two klasses.
duke@435	92	ciKlass* least_common_ancestor(ciKlass* k);
duke@435	93
duke@435	94	virtual bool is_interface() {
duke@435	95	return false;
duke@435	96	}
duke@435	97
duke@435	98	virtual bool is_abstract() {
duke@435	99	return false;
duke@435	100	}
duke@435	101
duke@435	102	// Does this type (array, class, interface) have no subtypes?
duke@435	103	virtual bool is_leaf_type() {
duke@435	104	return false;
duke@435	105	}
duke@435	106
duke@435	107	// Attempt to get a klass using this ciKlass's loader.
duke@435	108	ciKlass* find_klass(ciSymbol* klass_name);
duke@435	109	// Note: To find a class from its name string, use ciSymbol::make,
duke@435	110	// but consider adding to vmSymbols.hpp instead.
duke@435	111
duke@435	112	// Get the instance of java.lang.Class corresponding to this klass.
duke@435	113	ciInstance* java_mirror();
duke@435	114
duke@435	115	// Fetch Klass::modifier_flags.
duke@435	116	jint modifier_flags();
duke@435	117
duke@435	118	// Fetch Klass::access_flags.
duke@435	119	jint access_flags();
duke@435	120
duke@435	121	// What kind of ciObject is this?
duke@435	122	bool is_klass() { return true; }
duke@435	123
duke@435	124	void print_name_on(outputStream* st);
duke@435	125	};
stefank@2314	126
stefank@2314	127	#endif // SHARE_VM_CI_CIKLASS_HPP