Mercurial > hg > truffle
annotate src/share/vm/utilities/preserveException.cpp @ 17510:7e412f95e310
8032608: new hotspot build - hs25-b69
Reviewed-by: jcoomes
author | amurillo |
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date | Thu, 23 Jan 2014 13:53:23 -0800 |
parents | b9a9ed0f8eeb |
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0 | 1 /* |
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2 * Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "runtime/handles.inline.hpp" | |
27 #include "utilities/preserveException.hpp" | |
0 | 28 |
29 // TODO: These three classes should be refactored | |
30 | |
31 PreserveExceptionMark::PreserveExceptionMark(Thread*& thread) { | |
32 thread = Thread::current(); | |
33 _thread = thread; | |
34 _preserved_exception_oop = Handle(thread, _thread->pending_exception()); | |
35 _preserved_exception_line = _thread->exception_line(); | |
36 _preserved_exception_file = _thread->exception_file(); | |
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37 _thread->clear_pending_exception(); // Needed to avoid infinite recursion |
0 | 38 } |
39 | |
40 | |
41 PreserveExceptionMark::~PreserveExceptionMark() { | |
42 if (_thread->has_pending_exception()) { | |
43 oop exception = _thread->pending_exception(); | |
44 _thread->clear_pending_exception(); // Needed to avoid infinite recursion | |
45 exception->print(); | |
46 fatal("PreserveExceptionMark destructor expects no pending exceptions"); | |
47 } | |
48 if (_preserved_exception_oop() != NULL) { | |
49 _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); | |
50 } | |
51 } | |
52 | |
53 | |
54 // This code is cloned from PreserveExceptionMark, except that: | |
55 // returned pending exceptions do not cause a crash. | |
56 // thread is passed in, not set (not a reference parameter) | |
57 // and bug 6431341 has been addressed. | |
58 | |
59 CautiouslyPreserveExceptionMark::CautiouslyPreserveExceptionMark(Thread* thread) { | |
60 _thread = thread; | |
61 _preserved_exception_oop = Handle(thread, _thread->pending_exception()); | |
62 _preserved_exception_line = _thread->exception_line(); | |
63 _preserved_exception_file = _thread->exception_file(); | |
64 _thread->clear_pending_exception(); // Pending exceptions are checked in the destructor | |
65 } | |
66 | |
67 | |
68 CautiouslyPreserveExceptionMark::~CautiouslyPreserveExceptionMark() { | |
69 assert(!_thread->has_pending_exception(), "unexpected exception generated"); | |
70 if (_thread->has_pending_exception()) { | |
71 _thread->clear_pending_exception(); | |
72 } | |
73 if (_preserved_exception_oop() != NULL) { | |
74 _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); | |
75 } | |
76 } | |
77 | |
78 | |
79 void WeakPreserveExceptionMark::preserve() { | |
80 _preserved_exception_oop = Handle(_thread, _thread->pending_exception()); | |
81 _preserved_exception_line = _thread->exception_line(); | |
82 _preserved_exception_file = _thread->exception_file(); | |
83 _thread->clear_pending_exception(); | |
84 } | |
85 | |
86 void WeakPreserveExceptionMark::restore() { | |
87 if (!_thread->has_pending_exception()) { | |
88 _thread->set_pending_exception(_preserved_exception_oop(), _preserved_exception_file, _preserved_exception_line); | |
89 } | |
90 } |