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

src/share/vm/ci/ciExceptionHandler.hpp@710a3c8b516e (annotated)

src/share/vm/ci/ciExceptionHandler.hpp

Tue, 08 Aug 2017 15:57:29 +0800

author

aoqi

date

Tue, 08 Aug 2017 15:57:29 +0800

changeset 6876

710a3c8b516e

parent 2314

f95d63e2154a

parent 0

f90c822e73f8

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*
aoqi@0	23	*/
aoqi@0	24
aoqi@0	25	#ifndef SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP
aoqi@0	26	#define SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP
aoqi@0	27
aoqi@0	28	#include "ci/ciClassList.hpp"
aoqi@0	29	#include "ci/ciInstanceKlass.hpp"
aoqi@0	30
aoqi@0	31	// ciExceptionHandler
aoqi@0	32	//
aoqi@0	33	// This class represents an exception handler for a method.
aoqi@0	34	class ciExceptionHandler : public ResourceObj {
aoqi@0	35	private:
aoqi@0	36	friend class ciMethod;
aoqi@0	37
aoqi@0	38	// The loader to be used for resolving the exception
aoqi@0	39	// klass.
aoqi@0	40	ciInstanceKlass* _loading_klass;
aoqi@0	41
aoqi@0	42	// Handler data.
aoqi@0	43	int _start;
aoqi@0	44	int _limit;
aoqi@0	45	int _handler_bci;
aoqi@0	46	int _catch_klass_index;
aoqi@0	47
aoqi@0	48	// The exception klass that this handler catches.
aoqi@0	49	ciInstanceKlass* _catch_klass;
aoqi@0	50
aoqi@0	51	public:
aoqi@0	52	ciExceptionHandler(ciInstanceKlass* loading_klass,
aoqi@0	53	int start, int limit,
aoqi@0	54	int handler_bci, int klass_index) {
aoqi@0	55	_loading_klass = loading_klass;
aoqi@0	56	_start = start;
aoqi@0	57	_limit = limit;
aoqi@0	58	_handler_bci = handler_bci;
aoqi@0	59	_catch_klass_index = klass_index;
aoqi@0	60	_catch_klass = NULL;
aoqi@0	61	}
aoqi@0	62
aoqi@0	63	int start() { return _start; }
aoqi@0	64	int limit() { return _limit; }
aoqi@0	65	int handler_bci() { return _handler_bci; }
aoqi@0	66	int catch_klass_index() { return _catch_klass_index; }
aoqi@0	67
aoqi@0	68	// Get the exception klass that this handler catches.
aoqi@0	69	ciInstanceKlass* catch_klass();
aoqi@0	70
aoqi@0	71	bool is_catch_all() { return catch_klass_index() == 0; }
aoqi@0	72	bool is_in_range(int bci) {
aoqi@0	73	return start() <= bci && bci < limit();
aoqi@0	74	}
aoqi@0	75	bool catches(ciInstanceKlass *exc) {
aoqi@0	76	return is_catch_all() || exc->is_subtype_of(catch_klass());
aoqi@0	77	}
aoqi@0	78	bool is_rethrow() { return handler_bci() == -1; }
aoqi@0	79
aoqi@0	80	void print();
aoqi@0	81	};
aoqi@0	82
aoqi@0	83	#endif // SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP