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src/share/vm/ci/ciType.cpp@4ce7240d622c (annotated)

src/share/vm/ci/ciType.cpp

Wed, 06 Jan 2010 14:22:39 -0800

author

never

date

Wed, 06 Jan 2010 14:22:39 -0800

changeset 1577

4ce7240d622c

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6914300: ciEnv should export all well known classes
Reviewed-by: kvn, twisti

duke@435	1	/*
duke@435	2	* Copyright 2000-2002 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	#include "incls/_precompiled.incl"
duke@435	26	#include "incls/_ciType.cpp.incl"
duke@435	27
duke@435	28	ciType* ciType::_basic_types[T_CONFLICT+1];
duke@435	29
duke@435	30	// ciType
duke@435	31	//
duke@435	32	// This class represents either a class (T_OBJECT), array (T_ARRAY),
duke@435	33	// or one of the primitive types such as T_INT.
duke@435	34
duke@435	35	// ------------------------------------------------------------------
duke@435	36	// ciType::ciType
duke@435	37	//
duke@435	38	ciType::ciType(BasicType basic_type) : ciObject() {
duke@435	39	assert(basic_type >= T_BOOLEAN && basic_type <= T_CONFLICT, "range check");
duke@435	40	assert(basic_type != T_OBJECT && basic_type != T_ARRAY, "not a reference type");
duke@435	41	_basic_type = basic_type;
duke@435	42	}
duke@435	43
duke@435	44	ciType::ciType(KlassHandle k) : ciObject(k) {
duke@435	45	_basic_type = Klass::cast(k())->oop_is_array() ? T_ARRAY : T_OBJECT;
duke@435	46	}
duke@435	47
duke@435	48	ciType::ciType(ciKlass* klass) : ciObject(klass) {
duke@435	49	_basic_type = klass->is_array_klass_klass() ? T_ARRAY : T_OBJECT;
duke@435	50	}
duke@435	51
duke@435	52
duke@435	53	// ------------------------------------------------------------------
duke@435	54	// ciType::is_subtype_of
duke@435	55	//
duke@435	56	bool ciType::is_subtype_of(ciType* type) {
duke@435	57	if (this == type) return true;
duke@435	58	if (is_klass() && type->is_klass())
duke@435	59	return this->as_klass()->is_subtype_of(type->as_klass());
duke@435	60	return false;
duke@435	61	}
duke@435	62
duke@435	63	// ------------------------------------------------------------------
duke@435	64	// ciType::print_impl
duke@435	65	//
duke@435	66	// Implementation of the print method.
duke@435	67	void ciType::print_impl(outputStream* st) {
duke@435	68	st->print(" type=");
duke@435	69	print_name_on(st);
duke@435	70	}
duke@435	71
duke@435	72	// ------------------------------------------------------------------
duke@435	73	// ciType::print_name
duke@435	74	//
duke@435	75	// Print the name of this type
duke@435	76	void ciType::print_name_on(outputStream* st) {
duke@435	77	st->print(type2name(basic_type()));
duke@435	78	}
duke@435	79
duke@435	80
duke@435	81
duke@435	82	// ------------------------------------------------------------------
duke@435	83	// ciType::java_mirror
duke@435	84	//
duke@435	85	ciInstance* ciType::java_mirror() {
duke@435	86	VM_ENTRY_MARK;
duke@435	87	return CURRENT_THREAD_ENV->get_object(Universe::java_mirror(basic_type()))->as_instance();
duke@435	88	}
duke@435	89
duke@435	90	// ------------------------------------------------------------------
duke@435	91	// ciType::box_klass
duke@435	92	//
duke@435	93	ciKlass* ciType::box_klass() {
duke@435	94	if (!is_primitive_type()) return this->as_klass(); // reference types are "self boxing"
duke@435	95
duke@435	96	// Void is "boxed" with a null.
duke@435	97	if (basic_type() == T_VOID) return NULL;
duke@435	98
duke@435	99	VM_ENTRY_MARK;
duke@435	100	return CURRENT_THREAD_ENV->get_object(SystemDictionary::box_klass(basic_type()))->as_instance_klass();
duke@435	101	}
duke@435	102
duke@435	103
duke@435	104	// ------------------------------------------------------------------
duke@435	105	// ciType::make
duke@435	106	//
duke@435	107	// Produce the ciType for a given primitive BasicType.
duke@435	108	// As a bonus, produce the right reference type for T_OBJECT.
duke@435	109	// Does not work on T_ARRAY.
duke@435	110	ciType* ciType::make(BasicType t) {
duke@435	111	// short, etc.
duke@435	112	// Note: Bare T_ADDRESS means a raw pointer type, not a return_address.
duke@435	113	assert((uint)t < T_CONFLICT+1, "range check");
never@1577	114	if (t == T_OBJECT) return ciEnv::_Object_klass; // java/lang/Object
duke@435	115	assert(_basic_types[t] != NULL, "domain check");
duke@435	116	return _basic_types[t];
duke@435	117	}
duke@435	118
duke@435	119	// ciReturnAddress
duke@435	120	//
duke@435	121	// This class represents the type of a specific return address in the
duke@435	122	// bytecodes.
duke@435	123
duke@435	124	// ------------------------------------------------------------------
duke@435	125	// ciReturnAddress::ciReturnAddress
duke@435	126	//
duke@435	127	ciReturnAddress::ciReturnAddress(int bci) : ciType(T_ADDRESS) {
duke@435	128	assert(0 <= bci, "bci cannot be negative");
duke@435	129	_bci = bci;
duke@435	130	}
duke@435	131
duke@435	132	// ------------------------------------------------------------------
duke@435	133	// ciReturnAddress::print_impl
duke@435	134	//
duke@435	135	// Implementation of the print method.
duke@435	136	void ciReturnAddress::print_impl(outputStream* st) {
duke@435	137	st->print(" bci=%d", _bci);
duke@435	138	}
duke@435	139
duke@435	140	// ------------------------------------------------------------------
duke@435	141	// ciReturnAddress::make
duke@435	142	ciReturnAddress* ciReturnAddress::make(int bci) {
duke@435	143	GUARDED_VM_ENTRY(return CURRENT_ENV->get_return_address(bci);)
duke@435	144	}