Mercurial > hg > graal-jvmci-8
comparison src/share/vm/utilities/preserveException.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 1998-2006 Sun Microsystems, Inc. All Rights Reserved. | |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_preserveException.cpp.incl" | |
27 | |
28 // TODO: These three classes should be refactored | |
29 | |
30 PreserveExceptionMark::PreserveExceptionMark(Thread*& thread) { | |
31 thread = Thread::current(); | |
32 _thread = thread; | |
33 _preserved_exception_oop = Handle(thread, _thread->pending_exception()); | |
34 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
35 _preserved_exception_line = _thread->exception_line(); | |
36 _preserved_exception_file = _thread->exception_file(); | |
37 } | |
38 | |
39 | |
40 PreserveExceptionMark::~PreserveExceptionMark() { | |
41 if (_thread->has_pending_exception()) { | |
42 oop exception = _thread->pending_exception(); | |
43 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
44 exception->print(); | |
45 fatal("PreserveExceptionMark destructor expects no pending exceptions"); | |
46 } | |
47 if (_preserved_exception_oop() != NULL) { | |
48 _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); | |
49 } | |
50 } | |
51 | |
52 | |
53 // This code is cloned from PreserveExceptionMark, except that: | |
54 // returned pending exceptions do not cause a crash. | |
55 // thread is passed in, not set (not a reference parameter) | |
56 // and bug 6431341 has been addressed. | |
57 | |
58 CautiouslyPreserveExceptionMark::CautiouslyPreserveExceptionMark(Thread* thread) { | |
59 _thread = thread; | |
60 _preserved_exception_oop = Handle(thread, _thread->pending_exception()); | |
61 _preserved_exception_line = _thread->exception_line(); | |
62 _preserved_exception_file = _thread->exception_file(); | |
63 _thread->clear_pending_exception(); // Pending exceptions are checked in the destructor | |
64 } | |
65 | |
66 | |
67 CautiouslyPreserveExceptionMark::~CautiouslyPreserveExceptionMark() { | |
68 assert(!_thread->has_pending_exception(), "unexpected exception generated"); | |
69 if (_thread->has_pending_exception()) { | |
70 _thread->clear_pending_exception(); | |
71 } | |
72 if (_preserved_exception_oop() != NULL) { | |
73 _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); | |
74 } | |
75 } | |
76 | |
77 | |
78 void WeakPreserveExceptionMark::preserve() { | |
79 _preserved_exception_oop = Handle(_thread, _thread->pending_exception()); | |
80 _preserved_exception_line = _thread->exception_line(); | |
81 _preserved_exception_file = _thread->exception_file(); | |
82 _thread->clear_pending_exception(); | |
83 } | |
84 | |
85 void WeakPreserveExceptionMark::restore() { | |
86 if (!_thread->has_pending_exception()) { | |
87 _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); | |
88 } | |
89 } |