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

src/share/vm/ci/ciExceptionHandler.hpp@01522ca68fc7 (annotated)

src/share/vm/ci/ciExceptionHandler.hpp

Tue, 18 Jun 2013 12:31:07 -0700

author

johnc

date

Tue, 18 Jun 2013 12:31:07 -0700

changeset 5277

01522ca68fc7

parent 2314

f95d63e2154a

child 6876

710a3c8b516e

permissions

-rw-r--r--

8015237: Parallelize string table scanning during strong root processing
Summary: Parallelize the scanning of the intern string table by having each GC worker claim a given number of buckets. Changes were also reviewed by Per Liden <per.liden@oracle.com>.
Reviewed-by: tschatzl, stefank, twisti

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_CIEXCEPTIONHANDLER_HPP
stefank@2314	26	#define SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP
stefank@2314	27
stefank@2314	28	#include "ci/ciClassList.hpp"
stefank@2314	29	#include "ci/ciInstanceKlass.hpp"
stefank@2314	30
duke@435	31	// ciExceptionHandler
duke@435	32	//
duke@435	33	// This class represents an exception handler for a method.
duke@435	34	class ciExceptionHandler : public ResourceObj {
duke@435	35	private:
duke@435	36	friend class ciMethod;
duke@435	37
duke@435	38	// The loader to be used for resolving the exception
duke@435	39	// klass.
duke@435	40	ciInstanceKlass* _loading_klass;
duke@435	41
duke@435	42	// Handler data.
duke@435	43	int _start;
duke@435	44	int _limit;
duke@435	45	int _handler_bci;
duke@435	46	int _catch_klass_index;
duke@435	47
duke@435	48	// The exception klass that this handler catches.
duke@435	49	ciInstanceKlass* _catch_klass;
duke@435	50
duke@435	51	public:
duke@435	52	ciExceptionHandler(ciInstanceKlass* loading_klass,
duke@435	53	int start, int limit,
duke@435	54	int handler_bci, int klass_index) {
duke@435	55	_loading_klass = loading_klass;
duke@435	56	_start = start;
duke@435	57	_limit = limit;
duke@435	58	_handler_bci = handler_bci;
duke@435	59	_catch_klass_index = klass_index;
duke@435	60	_catch_klass = NULL;
duke@435	61	}
duke@435	62
duke@435	63	int start() { return _start; }
duke@435	64	int limit() { return _limit; }
duke@435	65	int handler_bci() { return _handler_bci; }
duke@435	66	int catch_klass_index() { return _catch_klass_index; }
duke@435	67
duke@435	68	// Get the exception klass that this handler catches.
duke@435	69	ciInstanceKlass* catch_klass();
duke@435	70
duke@435	71	bool is_catch_all() { return catch_klass_index() == 0; }
duke@435	72	bool is_in_range(int bci) {
duke@435	73	return start() <= bci && bci < limit();
duke@435	74	}
duke@435	75	bool catches(ciInstanceKlass *exc) {
duke@435	76	return is_catch_all() || exc->is_subtype_of(catch_klass());
duke@435	77	}
duke@435	78	bool is_rethrow() { return handler_bci() == -1; }
duke@435	79
duke@435	80	void print();
duke@435	81	};
stefank@2314	82
stefank@2314	83	#endif // SHARE_VM_CI_CIEXCEPTIONHANDLER_HPP