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src/share/vm/ci/ciType.hpp@f95d63e2154a (annotated)

src/share/vm/ci/ciType.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 4037

da91efe96a93

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) 2000, 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_CITYPE_HPP
stefank@2314	26	#define SHARE_VM_CI_CITYPE_HPP
stefank@2314	27
stefank@2314	28	#include "ci/ciObject.hpp"
stefank@2314	29	#include "oops/klassOop.hpp"
stefank@2314	30
duke@435	31	// ciType
duke@435	32	//
duke@435	33	// This class represents either a class (T_OBJECT), array (T_ARRAY),
duke@435	34	// or one of the primitive types such as T_INT.
duke@435	35	class ciType : public ciObject {
duke@435	36	CI_PACKAGE_ACCESS
duke@435	37	friend class ciKlass;
duke@435	38	friend class ciReturnAddress;
duke@435	39
duke@435	40	private:
duke@435	41	BasicType _basic_type;
duke@435	42
duke@435	43	ciType(BasicType t); // for the primitive types only
duke@435	44	ciType(KlassHandle k); // for subclasses (reference types)
duke@435	45	ciType(ciKlass* klass); // for unloaded types
duke@435	46
duke@435	47	const char* type_string() { return "ciType"; }
duke@435	48
duke@435	49	void print_impl(outputStream* st);
duke@435	50
duke@435	51	// Distinguished instances of primitive ciTypes..
duke@435	52	static ciType* _basic_types[T_CONFLICT+1];
duke@435	53
duke@435	54	public:
duke@435	55	BasicType basic_type() const { return _basic_type; }
duke@435	56
duke@435	57	// Returns true iff the types are identical, or if both are klasses
duke@435	58	// and the is_subtype_of relation holds between the klasses.
duke@435	59	bool is_subtype_of(ciType* type);
duke@435	60
duke@435	61	// Get the instance of java.lang.Class corresponding to this type.
duke@435	62	// There are mirrors for instance, array, and primitive types (incl. void).
duke@435	63	virtual ciInstance* java_mirror();
duke@435	64
duke@435	65	// Get the class which "boxes" (or "wraps") values of this type.
duke@435	66	// Example: short is boxed by java.lang.Short, etc.
duke@435	67	// Returns self if it is a reference type.
duke@435	68	// Returns NULL for void, since null is used in such cases.
duke@435	69	ciKlass* box_klass();
duke@435	70
duke@435	71	// Returns true if this is not a klass or array (i.e., not a reference type).
duke@435	72	bool is_primitive_type() const { return basic_type() != T_OBJECT && basic_type() != T_ARRAY; }
duke@435	73	int size() const { return type2size[basic_type()]; }
duke@435	74	bool is_void() const { return basic_type() == T_VOID; }
duke@435	75	bool is_one_word() const { return size() == 1; }
duke@435	76	bool is_two_word() const { return size() == 2; }
duke@435	77
duke@435	78	// What kind of ciObject is this?
duke@435	79	bool is_type() { return true; }
duke@435	80	bool is_classless() const { return is_primitive_type(); }
duke@435	81
duke@435	82	virtual void print_name_on(outputStream* st);
duke@435	83	void print_name() {
duke@435	84	print_name_on(tty);
duke@435	85	}
duke@435	86
duke@435	87	static ciType* make(BasicType t);
duke@435	88	};
duke@435	89
duke@435	90
duke@435	91	// ciReturnAddress
duke@435	92	//
duke@435	93	// This class represents the type of a specific return address in the
duke@435	94	// bytecodes.
duke@435	95	class ciReturnAddress : public ciType {
duke@435	96	CI_PACKAGE_ACCESS
duke@435	97
duke@435	98	private:
duke@435	99	// The bci of this return address.
duke@435	100	int _bci;
duke@435	101
duke@435	102	ciReturnAddress(int bci);
duke@435	103
duke@435	104	const char* type_string() { return "ciReturnAddress"; }
duke@435	105
duke@435	106	void print_impl(outputStream* st);
duke@435	107
duke@435	108	public:
duke@435	109	bool is_return_address() { return true; }
duke@435	110
duke@435	111	int bci() { return _bci; }
duke@435	112
duke@435	113	static ciReturnAddress* make(int bci);
duke@435	114	};
stefank@2314	115
stefank@2314	116	#endif // SHARE_VM_CI_CITYPE_HPP