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src/share/vm/utilities/preserveException.hpp@b84fd7d73702 (annotated)

src/share/vm/utilities/preserveException.hpp

Tue, 09 Apr 2013 09:54:17 -0700

author

iignatyev

date

Tue, 09 Apr 2013 09:54:17 -0700

changeset 4908

b84fd7d73702

parent 4299

f34d701e952e

child 6876

710a3c8b516e

permissions

-rw-r--r--

8007288: Additional WB API for compiler's testing
Reviewed-by: kvn, vlivanov

duke@435	1	/*
stefank@2314	2	* Copyright (c) 1998, 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_UTILITIES_PRESERVEEXCEPTION_HPP
stefank@2314	26	#define SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP
stefank@2314	27
stefank@2314	28	#include "runtime/handles.hpp"
stefank@4299	29	#include "runtime/thread.inline.hpp"
stefank@2314	30
duke@435	31	// This file provides more support for exception handling; see also exceptions.hpp
duke@435	32	class PreserveExceptionMark {
duke@435	33	private:
duke@435	34	Thread* _thread;
duke@435	35	Handle _preserved_exception_oop;
duke@435	36	int _preserved_exception_line;
duke@435	37	const char* _preserved_exception_file;
duke@435	38
duke@435	39	public:
duke@435	40	PreserveExceptionMark(Thread*& thread);
duke@435	41	~PreserveExceptionMark();
duke@435	42	};
duke@435	43
duke@435	44
duke@435	45	// This is a clone of PreserveExceptionMark which asserts instead
duke@435	46	// of failing when what it wraps generates a pending exception.
duke@435	47	// It also addresses bug 6431341.
duke@435	48	class CautiouslyPreserveExceptionMark {
duke@435	49	private:
duke@435	50	Thread* _thread;
duke@435	51	Handle _preserved_exception_oop;
duke@435	52	int _preserved_exception_line;
duke@435	53	const char* _preserved_exception_file;
duke@435	54
duke@435	55	public:
duke@435	56	CautiouslyPreserveExceptionMark(Thread* thread);
duke@435	57	~CautiouslyPreserveExceptionMark();
duke@435	58	};
duke@435	59
duke@435	60
duke@435	61	// Like PreserveExceptionMark but allows new exceptions to be generated in
duke@435	62	// the body of the mark. If a new exception is generated then the original one
duke@435	63	// is discarded.
duke@435	64	class WeakPreserveExceptionMark {
duke@435	65	private:
duke@435	66	Thread* _thread;
duke@435	67	Handle _preserved_exception_oop;
duke@435	68	int _preserved_exception_line;
duke@435	69	const char* _preserved_exception_file;
duke@435	70
duke@435	71	void preserve();
duke@435	72	void restore();
duke@435	73
duke@435	74	public:
duke@435	75	WeakPreserveExceptionMark(Thread* pThread) : _thread(pThread), _preserved_exception_oop() {
duke@435	76	if (pThread->has_pending_exception()) {
duke@435	77	preserve();
duke@435	78	}
duke@435	79	}
duke@435	80	~WeakPreserveExceptionMark() {
duke@435	81	if (_preserved_exception_oop.not_null()) {
duke@435	82	restore();
duke@435	83	}
duke@435	84	}
duke@435	85	};
duke@435	86
duke@435	87
duke@435	88
duke@435	89	// use global exception mark when allowing pending exception to be set and
duke@435	90	// saving and restoring them
duke@435	91	#define PRESERVE_EXCEPTION_MARK Thread* THREAD; PreserveExceptionMark __em(THREAD);
stefank@2314	92
stefank@2314	93	#endif // SHARE_VM_UTILITIES_PRESERVEEXCEPTION_HPP