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src/share/vm/ci/ciSignature.cpp@a61af66fc99e (annotated)

src/share/vm/ci/ciSignature.cpp

Sat, 01 Dec 2007 00:00:00 +0000

author

duke

date

Sat, 01 Dec 2007 00:00:00 +0000

changeset 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

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duke@435	1	/*
duke@435	2	* Copyright 1999-2007 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/_ciSignature.cpp.incl"
duke@435	27
duke@435	28	// ciSignature
duke@435	29	//
duke@435	30	// This class represents the signature of a method.
duke@435	31
duke@435	32	// ------------------------------------------------------------------
duke@435	33	// ciSignature::ciSignature
duke@435	34	ciSignature::ciSignature(ciKlass* accessing_klass, ciSymbol* symbol) {
duke@435	35	ASSERT_IN_VM;
duke@435	36	EXCEPTION_CONTEXT;
duke@435	37	_accessing_klass = accessing_klass;
duke@435	38	_symbol = symbol;
duke@435	39
duke@435	40	ciEnv* env = CURRENT_ENV;
duke@435	41	Arena* arena = env->arena();
duke@435	42	_types = new (arena) GrowableArray<ciType*>(arena, 8, 0, NULL);
duke@435	43
duke@435	44	int size = 0;
duke@435	45	int count = 0;
duke@435	46	symbolHandle sh (THREAD, symbol->get_symbolOop());
duke@435	47	SignatureStream ss(sh);
duke@435	48	for (; ; ss.next()) {
duke@435	49	// Process one element of the signature
duke@435	50	ciType* type;
duke@435	51	if (!ss.is_object()) {
duke@435	52	type = ciType::make(ss.type());
duke@435	53	} else {
duke@435	54	symbolOop name = ss.as_symbol(THREAD);
duke@435	55	if (HAS_PENDING_EXCEPTION) {
duke@435	56	type = ss.is_array() ? (ciType*)ciEnv::unloaded_ciobjarrayklass()
duke@435	57	: (ciType*)ciEnv::unloaded_ciinstance_klass();
duke@435	58	env->record_out_of_memory_failure();
duke@435	59	CLEAR_PENDING_EXCEPTION;
duke@435	60	} else {
duke@435	61	ciSymbol* klass_name = env->get_object(name)->as_symbol();
duke@435	62	type = env->get_klass_by_name_impl(_accessing_klass, klass_name, false);
duke@435	63	}
duke@435	64	}
duke@435	65	_types->append(type);
duke@435	66	if (ss.at_return_type()) {
duke@435	67	// Done processing the return type; do not add it into the count.
duke@435	68	break;
duke@435	69	}
duke@435	70	size += type->size();
duke@435	71	count++;
duke@435	72	}
duke@435	73	_size = size;
duke@435	74	_count = count;
duke@435	75	}
duke@435	76
duke@435	77	// ------------------------------------------------------------------
duke@435	78	// ciSignature::return_ciType
duke@435	79	//
duke@435	80	// What is the return type of this signature?
duke@435	81	ciType* ciSignature::return_type() const {
duke@435	82	return _types->at(_count);
duke@435	83	}
duke@435	84
duke@435	85	// ------------------------------------------------------------------
duke@435	86	// ciSignature::ciType_at
duke@435	87	//
duke@435	88	// What is the type of the index'th element of this
duke@435	89	// signature?
duke@435	90	ciType* ciSignature::type_at(int index) const {
duke@435	91	assert(index < _count, "out of bounds");
duke@435	92	// The first _klasses element holds the return klass.
duke@435	93	return _types->at(index);
duke@435	94	}
duke@435	95
duke@435	96	// ------------------------------------------------------------------
duke@435	97	// ciSignature::print_signature
duke@435	98	void ciSignature::print_signature() {
duke@435	99	_symbol->print_symbol();
duke@435	100	}
duke@435	101
duke@435	102	// ------------------------------------------------------------------
duke@435	103	// ciSignature::print
duke@435	104	void ciSignature::print() {
duke@435	105	tty->print("<ciSignature symbol=");
duke@435	106	print_signature();
duke@435	107	tty->print(" accessing_klass=");
duke@435	108	_accessing_klass->print();
duke@435	109	tty->print(" address=0x%x>", (address)this);
duke@435	110	}